ASN Whois Database

Overview

Our ASN WHOIS (parsed) Database provides clean, normalized ownership and contact intelligence for Autonomous System Numbers worldwide. Instantly see who operates an ASN, where it’s registered, and how to reach the right people, so you can validate routing policies, accelerate incident response, enrich threat intelligence, and keep network inventories accurate across security and NetOps workflows.

Updated daily and standardized across all RIRs (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC). Delivered in flexible formats (CSV, JSON, MMDB or custom exports/API). Below, you'll find full documentation of the archive contents, schema definitions, file specifications, and integration notes to help you get up and running quickly.

Available Database Formats

CSV

File Size: 48.21 MB

Entries: 130.2K

Fields: 55

Last Updated: Yesterday

Documentation

JSON

File Size: 47.51 MB

Entries: 130.2K

Fields: 55

Last Updated: Today

Documentation

CSV Database Documentation

1. Overview

The CSV version is a set of Gzip-compressed CSV files containing ASN and ASN WHOIS information. These files are designed for bulk imports and integration into relational databases.

2. Archive Content

After downloading and extracting the ASN Whois CSV database archive, you'll find the following files (with their types noted):

db-asn-whois.csv.gz

Links asBlock and autNum to WHOIS details: name, country, domain, RIR, and a raw WHOIS record.

File Size: 38.55 MB

Entries: 130.2K

Fields: 14

db-org-details.csv.gz

Links an organization ID to its handle, name, type, and contact details.

File Size: 3.96 MB

Entries: 76.1K

Fields: 11

db-handles-details.csv.gz

Links the network handle ID to its name, country, address, and contact details.

File Size: 5.70 MB

Entries: 128.0K

Fields: 10

db-asn-whois.json.gz

Full WHOIS details for ASN: name, country, domain, RIR, contact IDs, and raw WHOIS record.

File Size: 47.50 MB

README.md

Documentation for dataset contents, schema, usage, and support.

File Size: 9.19 KB

checksum.txt

SHA-256 checksums for verifying file integrity.

File Size: 429 Bytes

Schema

This section describes the schema of each file included in the ASN Whois Database archive. For every file, you'll find its purpose, field definitions, and examples to help with integration.

1. db-asn-whois.csv.gz

This file contains detailed WHOIS information for Autonomous System Numbers (ASNs). It maps each AS Block and autNum to the name, country, domain, and RIR, as well as different contact handle IDs and the full rawWhois record.

Field	Type	Description	Can be empty?	Example
asBlock	string	The AS block associated with the ASN in the WHOIS record.	Yes	AS15169
autNum	string	The Autonomous System Number (ASN) in the WHOIS record.	No	AS15169
name	string	The name associated with the ASN in the WHOIS record.	Yes	GOOGLE
country	string	The country code associated with the ASN in the WHOIS record.	Yes	US
domain	string	The domain name associated with the ASN in the WHOIS record.	Yes	google.com
rir	string	The Regional Internet Registry (RIR) that manages the ASN.	Yes	ARIN
org_id	number	The unique identifier for the organization associated with the ASN.	Yes	1
admin_handles_id	number	The unique identifier for the administrative contact handle associated with the ASN.	Yes	1
tech_handles_id	number	The unique identifier for the technical contact handle associated with the ASN.	Yes	1
abuse_handles_id	number	The unique identifier for the abuse contact handle associated with the ASN.	Yes	1
irt_handles_id	number	The unique identifier for the Incident Response Team (IRT) contact handle associated with the ASN.	Yes	1
rawWhois	string	The raw WHOIS record data associated with the ASN.	Yes	Raw WHOIS data string...
dateCreated	string	The date when the WHOIS record for the ASN was created.	Yes	2020-01-01T12:00:00Z
dateUpdated	string	The date when the WHOIS record for the ASN was last updated.	Yes	2023-01-15T12:00:00Z

I. Example Records

Example

asBlock,autNum,name,country,domain,rir,org_id,admin_handles_id,tech_handles_id,abuse_handles_id,irt_handles_id,rawWhois,dateCreated,dateUpdated
AS622 - AS622,616 - 665,DNIC-ASBLK-00616-00665,US,mail.mil,ARIN,1,,"1,2",1,,"
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       616 - 665
ASName:         DNIC-ASBLK-00616-00665
ASHandle:       AS616
RegDate:        1990-04-19
Updated:        2025-09-12
Ref:            https://rdap.arin.net/registry/autnum/616



OrgName:        United States Department of Defense (DoD)
OrgId:          USDDD
Address:        3990 E. Broad Street
City:           Columbus
StateProv:      OH
PostalCode:     43218
Country:        US
RegDate:        2007-01-12
Updated:        2025-03-13
Ref:            https://rdap.arin.net/registry/entity/USDDD


OrgAbuseHandle: MIL-HSTMST-ARIN
OrgAbuseName:   Network DoD
OrgAbusePhone:  +1-844-347-2457 
OrgAbuseEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN

OrgTechHandle: MIL-HSTMST-ARIN
OrgTechName:   Network DoD
OrgTechPhone:  +1-844-347-2457 
OrgTechEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgTechRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN

OrgTechHandle: REGIS10-ARIN
OrgTechName:   Registration
OrgTechPhone:  +1-844-347-2457 
OrgTechEmail:  disa.columbus.ns.mbx.arin-registrations@mail.mil
OrgTechRef:    https://rdap.arin.net/registry/entity/REGIS10-ARIN

OrgNOCHandle: MIL-HSTMST-ARIN
OrgNOCName:   Network DoD
OrgNOCPhone:  +1-844-347-2457 
OrgNOCEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
OrgNOCRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
",1990-04-19,2025-09-12
AS2773 - AS2822,2777,TGI,DE,telekom.de,RIPE,2,3,3,,,"% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the ""-B"" flag.

% Information related to 'AS2773 - AS2822'

as-block:       AS2773 - AS2822
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:18Z
last-modified:  2018-11-22T15:27:18Z
source:         RIPE

% Information related to 'AS2777'

% Abuse contact for 'AS2777' is 'abuse@telekom.de'

aut-num:        AS2777
as-name:        TGI
org:            ORG-DTA2-RIPE
admin-c:        SB15220-RIPE
tech-c:         SB15220-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         DTAG-RR
created:        1970-01-01T00:00:00Z
last-modified:  2022-11-03T14:29:12Z
source:         RIPE

organisation:   ORG-DTA2-RIPE
org-name:       Deutsche Telekom AG
country:        DE
org-type:       LIR
address:        Eduard-Schopf-Allee 1
address:        D-28217
address:        Bremen
address:        GERMANY
phone:          +4942151554041
phone:          +4942151555165
fax-no:         +49391580100379
fax-no:         +494412344589
admin-c:        DTAG-RIPE
admin-c:        SL7866-RIPE
admin-c:        EH4097-RIPE
admin-c:        SB15220-RIPE
abuse-c:        DTAG3-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        DTAG-NIC
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         DTAG-NIC
created:        2004-04-17T11:12:44Z
last-modified:  2026-02-05T12:49:20Z
source:         RIPE # Filtered

person:         Sebastian Becker
address:        Deutsche Telekom AG
address:        Wolbecker Str. 268, 48155, Muenster, Deutschland
phone:          +49 228 18123797
nic-hdl:        SB15220-RIPE
mnt-by:         DTAG-NIC
mnt-by:         DTAG-RR
created:        2011-11-01T16:24:28Z
last-modified:  2024-09-03T15:54:20Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.121.2 (SHETLAND)

",1970-01-01,2022-11-03
AS4150 - AS4150,4150,SUPRANET-WIS,US,supranet.net,ARIN,3,,4,5,,"
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       4150
ASName:         SUPRANET-WIS
ASHandle:       AS4150
RegDate:        1994-12-15
Updated:        2004-01-13
Comment:        Please report abuse only to: abuse@supranet.net
Ref:            https://rdap.arin.net/registry/autnum/4150


OrgName:        SupraNet Communications, Inc.
OrgId:          SUPN
Address:        8000 Excelsior Dr.
Address:        Suite 204
City:           Madison
StateProv:      WI
PostalCode:     53717
Country:        US
RegDate:        1994-12-15
Updated:        2020-08-18
Comment:        Please report abuse only to: abuse@supranet.net
Ref:            https://rdap.arin.net/registry/entity/SUPN


OrgAbuseHandle: SAC31-ARIN
OrgAbuseName:   SupraNet Abuse Contact
OrgAbusePhone:  +1-608-836-0282 
OrgAbuseEmail:  abuse@supranet.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SAC31-ARIN

OrgNOCHandle: SUPPO1504-ARIN
OrgNOCName:   Support
OrgNOCPhone:  +1-608-836-0283 
OrgNOCEmail:  support@supranet.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/SUPPO1504-ARIN

OrgTechHandle: STC1-ARIN
OrgTechName:   SupraNet Technical Contact
OrgTechPhone:  +1-608-836-0282 
OrgTechEmail:  colinb@supranet.net
OrgTechRef:    https://rdap.arin.net/registry/entity/STC1-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
",1994-12-15,2004-01-13
AS4372 - AS4372,4372,NET-LM,US,arin.con.com,ARIN,4,,6,6,,"
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       4372
ASName:         NET-LM
ASHandle:       AS4372
RegDate:        1995-02-08
Updated:        2016-08-11
Ref:            https://rdap.arin.net/registry/autnum/4372


OrgName:        Luce McQuillin Corporation
OrgId:          L-M
Address:        1122 E. Pike St.
Address:        Suite 1215
City:           Seattle
StateProv:      WA
PostalCode:     98122
Country:        US
RegDate:        1995-02-08
Updated:        2013-10-13
Ref:            https://rdap.arin.net/registry/entity/L-M


OrgTechHandle: DLU47-ARIN
OrgTechName:   Luce, Doug 
OrgTechPhone:  +1-877-224-3675 
OrgTechEmail:  doug@arin.con.com
OrgTechRef:    https://rdap.arin.net/registry/entity/DLU47-ARIN

OrgAbuseHandle: DLU47-ARIN
OrgAbuseName:   Luce, Doug 
OrgAbusePhone:  +1-877-224-3675 
OrgAbuseEmail:  doug@arin.con.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DLU47-ARIN

RTechHandle: DLU47-ARIN
RTechName:   Luce, Doug 
RTechPhone:  +1-877-224-3675 
RTechEmail:  doug@arin.con.com
RTechRef:    https://rdap.arin.net/registry/entity/DLU47-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
",1995-02-08,2016-08-11
AS4608 - AS4865,4839,CERNAP2-CN,CN,cernet.edu.cn,APNIC,null,7,8,9,,"% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS4608 - AS4865'

as-block:       AS4608 - AS4865
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2019-05-20T03:52:26Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS4839'

% Abuse contact for 'AS4839' is 'abuse@cernet.edu.cn'

aut-num:        AS4839
as-name:        CERNAP2-CN
descr:          NAP2 at CERNET located in Shanghai
descr:          Shanghai Jiaotong University, Shanghai
country:        CN
import:         from AS4538 action pref=10; accept AS4538
import:         from AS4799 action pref=10; accept AS4799
import:         from AS4134 action pref=10; accept AS4134 AS4808 AS4809
import:         from AS7497 action pref=10; accept AS7497
import:         from AS9929 action pref=10; accept AS9929
import:         from AS9389 action pref=10; accept AS9389
import:         from AS9306 action pref=10; accept AS9306
import:         from AS9800 action pref=10; accept AS9800
import:         from AS9808 action pref=10; accept AS9808
export:         to AS4538 announce ANY
export:         to AS4799 announce ANY
export:         to AS4808 announce ANY
export:         to AS7497 announce ANY
export:         to AS9929 announce ANY
export:         to AS9389 announce ANY
export:         to AS9306 announce ANY
export:         to AS9800 announce ANY
export:         to AS9808 announce ANY
default:        to AS4538 action pref=10; networks ANY
remarks:        Exchange Point
admin-c:        XL1-CN
tech-c:         SZ2-AP
abuse-c:        AC1685-AP
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-by:         APNIC-HM
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:26Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Center,
address:        FIT-3-220, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
fax-no:         +86-10-62785933
e-mail:         abuse@cernet.edu.cn
abuse-mailbox:  abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        abuse@cernet.edu.cn was validated on 2026-03-05
mnt-by:         MAINT-CERNET-AP
last-modified:  2026-03-05T06:39:56Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Center,
address:        FIT-3-220, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
e-mail:         abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        abuse@cernet.edu.cn was validated on 2026-03-05
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T06:40:20Z
source:         APNIC

person:         Shuang Zhu
address:        China Education and Research Network Information Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084, China
country:        CN
phone:          +86-10-6278-5931
fax-no:         +86-10-6278-5933
e-mail:         szhu@cernet.edu.cn
nic-hdl:        SZ2-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:14:36Z
source:         APNIC

person:         Xing Li
address:        China Education and Research Network Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084
address:        CN
country:        CN
phone:          +86-10-6278-5983
fax-no:         +86-10-6278-5933
e-mail:         xing@cernet.edu.cn
nic-hdl:        XL1-CN
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:14:25Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-JP1)

",null,2020-09-03
AS6686 - AS6712,6709,BGNETT,NO,globalconnect.no,RIPE,5,10,10,,,"% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the ""-B"" flag.

% Information related to 'AS6686 - AS6712'

as-block:       AS6686 - AS6712
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2025-08-20T13:58:23Z
last-modified:  2025-08-20T13:58:23Z
source:         RIPE

% Information related to 'AS6709'

% Abuse contact for 'AS6709' is 'abuse@globalconnect.no'

aut-num:        AS6709
as-name:        BGNETT
org:            ORG-BNA1-RIPE
admin-c:        BNH2-RIPE
tech-c:         BNH2-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         AS2116-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2025-01-13T10:15:35Z
source:         RIPE

organisation:   ORG-BNA1-RIPE
org-name:       GLOBALCONNECT AS
country:        NO
org-type:       LIR
address:        Snar?yveien 36
address:        1364
address:        Fornebu
address:        NORWAY
phone:          +4721550000
fax-no:         +4721550001
abuse-c:        AR16320-RIPE
remarks:        peering contact: peering@as2116.net
admin-c:        BNH2-RIPE
admin-c:        SH2102-RIPE
mnt-ref:        AS2116-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS2116-MNT
created:        2004-04-17T11:44:38Z
last-modified:  2022-10-13T11:32:14Z
source:         RIPE # Filtered

role:           GlobalConnect NO HOSTMASTER
address:        GlobalConnect
address:        Snar?yveien 36
address:        P.O. Box 1,
address:        N-1336
address:        Norway
phone:          +47 07900
remarks:        -------------------------------------------------------
remarks:        For all matters concerning abuse please email abuse@globalconnect.no
remarks:        or the admin-c of the respective IP address you have issues with.
remarks:        -------------------------------------------------------
admin-c:        SH2102-RIPE
admin-c:        JH30866-RIPE
tech-c:         SH2102-RIPE
tech-c:         JH30866-RIPE
nic-hdl:        BNH2-RIPE
mnt-by:         AS2116-MNT
created:        2002-09-11T08:53:01Z
last-modified:  2022-07-19T10:56:29Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.121.2 (ABERDEEN)

",1970-01-01,2025-01-13
AS8797 - AS9128,8930,ASN-MEDIAFAX,RO,ip.ro,RIPE,6,11,11,,,"% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the ""-B"" flag.

% Information related to 'AS8797 - AS9128'

as-block:       AS8797 - AS9128
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2021-11-04T15:25:08Z
last-modified:  2021-11-04T15:25:08Z
source:         RIPE

% Information related to 'AS8930'

% Abuse contact for 'AS8930' is 'abuse@ip.ro'

aut-num:        AS8930
as-name:        ASN-MEDIAFAX
org:            ORG-MS81-RIPE
import:         from AS8751 action pref=100; accept ANY
import:         from AS8708 action pref=100; accept ANY
export:         to AS8708 announce AS8930
export:         to AS8751 announce AS8930
admin-c:        AD1221-RIPE
tech-c:         AD1221-RIPE
status:         ASSIGNED
mnt-by:         AS8930-MNT
mnt-by:         RIPE-NCC-END-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2021-11-23T10:13:52Z
source:         RIPE # Filtered
sponsoring-org: ORG-IRMS1-RIPE

organisation:   ORG-MS81-RIPE
org-name:       EX MEDIA SA
country:        RO
org-type:       OTHER
address:        Tudor Arghezi, 3B, Bucuresti
address:        Sector 2, Romania, RO
phone:          +40.318256189
abuse-c:        AR26202-RIPE
admin-c:        AD1221-RIPE
tech-c:         AD1221-RIPE
mnt-by:         AS8930-MNT
mnt-ref:        AS8930-MNT
created:        2009-12-22T18:59:46Z
last-modified:  2024-05-16T09:11:58Z
source:         RIPE # Filtered

person:         ANDREI DRAGUS
address:        MEDIAFAX SA
address:        Tudor Arghezi, 3B, Bucuresti
address:        Sector 2, Romania, RO
phone:          +40745082453
nic-hdl:        AD1221-RIPE
mnt-by:         AS8930-MNT
created:        2009-12-22T18:59:05Z
last-modified:  2022-04-28T12:19:31Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.121.2 (DEXTER)

",1970-01-01,2021-11-23
AS9249 - AS10239,null,null,null,null,null,null,,,,,"% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS9249 - AS10239'

as-block:       AS9249 - AS10239
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2022-09-22T22:36:45Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS9990 - AS10021'

as-block:       AS9990 - AS10021
descr:          JPNIC-2Byte-ASBLOCK-AP
descr:          for assignment to JPNIC members
country:        JP
admin-c:        JNIC1-AP
tech-c:         JNIC1-AP
remarks:        Authoritative information regarding AS Number
remarks:        assignments made from within this block can be
remarks:        queried at whois.nic.ad.jp.
remarks:        To only display English output,
remarks:        add '/e' at the end of command,
remarks:        e.g. 'whois -h whois.nic.ad.jp xxx/e'.
mnt-by:         APNIC-HM
mnt-lower:      MAINT-JPNIC
last-modified:  2017-06-12T03:54:30Z
source:         APNIC

role:           Japan Network Information Center
address:        Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda
address:        Chiyoda-ku, Tokyo 101-0047, Japan
country:        JP
phone:          +81-3-5297-2311
fax-no:         +81-3-5297-2312
e-mail:         hostmaster@nic.ad.jp
admin-c:        JI13-AP
tech-c:         JE53-AP
nic-hdl:        JNIC1-AP
mnt-by:         MAINT-JPNIC
last-modified:  2022-01-05T03:04:02Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-US2)

",null,2022-09-22
AS17653 - AS18431,17967,CNNIC,CN,cnnic.cn,APNIC,null,12,12,13,,"% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS17653 - AS18431'

as-block:       AS17653 - AS18431
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2019-01-08T23:19:07Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS17962 - AS17969'

as-block:       AS17962 - AS17969
descr:          China Internet Network Information Center
country:        CN
remarks:        These AS numbers are further assigned by
remarks:        CNNIC to CNNIC members and end-users
remarks:        in the CNNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CNNIC-AP
last-modified:  2017-06-22T03:06:52Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS17967'

% Abuse contact for 'AS17967' is 'ipas@cnnic.cn'

aut-num:        AS17967
as-name:        CNNIC
descr:          CNNIC
country:        CN
admin-c:        IPAS1-AP
tech-c:         IPAS1-AP
abuse-c:        AC1601-AP
notify:         ipas@cnnic.net.cn
mnt-by:         MAINT-CNNIC-AP
mnt-irt:        IRT-CNNIC-CN
last-modified:  2021-06-16T01:33:17Z
source:         APNIC

irt:            IRT-CNNIC-CN
address:        Beijing, China
e-mail:         ipas@cnnic.cn
abuse-mailbox:  ipas@cnnic.cn
admin-c:        IP50-AP
tech-c:         IP50-AP
auth:           # Filtered
remarks:        Please note that CNNIC is not an ISP and is not
remarks:        empowered to investigate complaints of network abuse.
remarks:        Please contact the tech-c or admin-c of the network.
remarks:        ipas@cnnic.cn is invalid
mnt-by:         MAINT-CNNIC-AP
last-modified:  2025-11-17T23:08:37Z
source:         APNIC

role:           ABUSE CNNICCN
country:        ZZ
address:        Beijing, China
phone:          +000000000
e-mail:         ipas@cnnic.cn
admin-c:        IP50-AP
tech-c:         IP50-AP
nic-hdl:        AC1601-AP
remarks:        Generated from irt object IRT-CNNIC-CN
remarks:        ipas@cnnic.cn is invalid
abuse-mailbox:  ipas@cnnic.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-19T17:20:32Z
source:         APNIC

role:           CNNIC IPAS CONFEDERATION
address:        No.4, Zhongguancun No.4 South Street,
address:        Haidian District, Beijing
country:        CN
phone:          +86-010-58813000
fax-no:         +86-010-58813075
e-mail:         ipas@cnnic.cn
admin-c:        IP50-AP
tech-c:         IP50-AP
nic-hdl:        IPAS1-AP
mnt-by:         MAINT-CNNIC-AP
last-modified:  2013-09-12T07:40:01Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-UK2)

",null,2021-06-16
AS19221 - AS19221,19221,NORTHSTAR-TRAVEL-MEDIA,US,ntmllc.com,ARIN,7,,14,14,,"
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       19221
ASName:         NORTHSTAR-TRAVEL-MEDIA
ASHandle:       AS19221
RegDate:        2007-01-09
Updated:        2012-03-02
Ref:            https://rdap.arin.net/registry/autnum/19221


OrgName:        NORTHSTAR Travel Media, LLC.
OrgId:          NTML
Address:        100 Lighting Way
City:           Secaucus
StateProv:      NJ
PostalCode:     07094
Country:        US
RegDate:        2006-12-19
Updated:        2009-06-23
Ref:            https://rdap.arin.net/registry/entity/NTML


OrgNOCHandle: NETWO1476-ARIN
OrgNOCName:   Network Engineering
OrgNOCPhone:  +1-201-902-1970 
OrgNOCEmail:  rrodriguez@ntmllc.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO1476-ARIN

OrgAbuseHandle: NETWO1476-ARIN
OrgAbuseName:   Network Engineering
OrgAbusePhone:  +1-201-902-1970 
OrgAbuseEmail:  rrodriguez@ntmllc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO1476-ARIN

OrgTechHandle: NETWO1476-ARIN
OrgTechName:   Network Engineering
OrgTechPhone:  +1-201-902-1970 
OrgTechEmail:  rrodriguez@ntmllc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO1476-ARIN

RTechHandle: NETWO1476-ARIN
RTechName:   Network Engineering
RTechPhone:  +1-201-902-1970 
RTechEmail:  rrodriguez@ntmllc.com
RTechRef:    https://rdap.arin.net/registry/entity/NETWO1476-ARIN

RNOCHandle: NETWO1476-ARIN
RNOCName:   Network Engineering
RNOCPhone:  +1-201-902-1970 
RNOCEmail:  rrodriguez@ntmllc.com
RNOCRef:    https://rdap.arin.net/registry/entity/NETWO1476-ARIN

RAbuseHandle: NETWO1476-ARIN
RAbuseName:   Network Engineering
RAbusePhone:  +1-201-902-1970 
RAbuseEmail:  rrodriguez@ntmllc.com
RAbuseRef:    https://rdap.arin.net/registry/entity/NETWO1476-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
",2007-01-09,2012-03-02

2. db-handles-details.csv.gz

This file contains detailed information on various network handles. It links a unique ID to a specific handle, name, country, address, and contact details such as email, phone, and fax.

Field	Type	Description	Can be empty?	Example
id	number	The unique identifier for the WHOIS handle.	No	1
handle	string	The WHOIS handle.	No	EXAMPLE-HANDLE
name	string	The name associated with the WHOIS handle.	No	John Doe
country	string	The country associated with the WHOIS handle.	Yes	US
email	string	The email address associated with the WHOIS handle.	Yes	contact@example.org
phone	string	The phone number associated with the WHOIS handle.	Yes	+1-800-555-0123
fax	string	The fax number associated with the WHOIS handle.	Yes	+1-800-555-0456
address	string	The physical address associated with the WHOIS handle.	Yes	123 Example St, Example City, EX 12345, Country
date_updated	string	The date when the WHOIS handle information was last updated.	Yes	2023-01-15T12:00:00Z
source	string	The source of the WHOIS handle information.	Yes	ARIN

I. Example Records

Example

id,handle,name,country,email,phone,fax,address,date_updated,source
8,SZ2-AP,Shuang Zhu,CN,szhu@cernet.edu.cn,+86-10-6278-5931,+86-10-6278-5933,"China Education and Research Network Information Center, Room 225, Main Building, Tsinghua University, Beijing 100084, China",2011-12-22,APNIC
5,SAC31-ARIN,SupraNet Abuse Contact,,abuse@supranet.net,+1-608-836-0282,,,,https://rdap.arin.net/registry/entity/SAC31-ARIN
11,AD1221-RIPE,ANDREI DRAGUS,ROMANIA RO,,+40745082453,,"MEDIAFAX SA, Tudor Arghezi, 3B, Bucuresti, Sector 2, Romania, RO",2022-04-28,RIPE
10,BNH2-RIPE,GlobalConnect NO HOSTMASTER,NORWAY,,+47 07900,,"GlobalConnect, Snar?yveien 36, P.O. Box 1,, N-1336, Norway",2022-07-19,RIPE
7,XL1-CN,Xing Li,CN,xing@cernet.edu.cn,+86-10-6278-5983,+86-10-6278-5933,"China Education and Research Network Center, Room 225, Main Building, Tsinghua University, Beijing 100084, CN",2011-12-22,APNIC
12,IPAS1-AP,CNNIC IPAS CONFEDERATION,CN,ipas@cnnic.cn,+86-010-58813000,+86-010-58813075,"No.4, Zhongguancun No.4 South Street,, Haidian District, Beijing",2013-09-12,APNIC
3,SB15220-RIPE,Sebastian Becker,DEUTSCHLAND,,+49 228 18123797,,"Deutsche Telekom AG, Wolbecker Str. 268, 48155, Muenster, Deutschland",2024-09-03,RIPE
2,REGIS10-ARIN,Registration,,disa.columbus.ns.mbx.arin-registrations@mail.mil,+1-844-347-2457,,,,https://rdap.arin.net/registry/entity/REGIS10-ARIN
9,AC1685-AP,ABUSE CERNETAP,ZZ,abuse@cernet.edu.cn,+86-10-62784301,,"Network Center,, FIT-3-220, Tsinghua Univ, Beijing 100084, China",2026-03-05,APNIC
14,NETWO1476-ARIN,Network Engineering,,rrodriguez@ntmllc.com,+1-201-902-1970,,,,https://rdap.arin.net/registry/entity/NETWO1476-ARIN
4,STC1-ARIN,SupraNet Technical Contact,,colinb@supranet.net,+1-608-836-0282,,,,https://rdap.arin.net/registry/entity/STC1-ARIN
1,MIL-HSTMST-ARIN,Network DoD,,disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil,+1-844-347-2457,,,,https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN
6,DLU47-ARIN,"Luce, Doug",,doug@arin.con.com,+1-877-224-3675,,,,https://rdap.arin.net/registry/entity/DLU47-ARIN
13,AC1601-AP,ABUSE CNNICCN,ZZ,ipas@cnnic.cn,+000000000,,"Beijing, China",2025-09-19,APNIC

3. db-org-details.csv.gz

This file provides detailed organization information. It links a unique ID to an organization's handle, name, type, address, country, and various contact details including email, phone, and fax.

Field	Type	Description	Can be empty?	Example
id	number	The unique identifier for the WHOIS organization.	No	1
handle	string	The handle of the WHOIS organization.	Yes	EXAMPLE-ORG
name	string	The name of the WHOIS organization.	No	Example Organization
type	string	The type of the WHOIS organization.	Yes	organization
address	string	The address of the WHOIS organization.	Yes	123 Example St, Example City, EX 12345, Country
country	string	The country of the WHOIS organization.	Yes	US
email	string	The email address of the WHOIS organization.	Yes	contact@example.org
phone	string	The phone number of the WHOIS organization.	Yes	+1-800-555-0123
fax	string	The fax number of the WHOIS organization.	Yes	+1-800-555-0456
date_updated	string	The date when the WHOIS organization information was last updated.	Yes	2023-01-15T12:00:00Z
source	string	The source of the WHOIS organization information.	Yes	ARIN

I. Example Records

Example

id,handle,name,type,address,country,email,phone,fax,date_updated,source
5,ORG-BNA1-RIPE,GLOBALCONNECT AS,LIR,"Snar?yveien 36, 1364, Fornebu, NORWAY",NO,,+4721550000,+4721550001,2022-10-13,RIPE
7,NTML,"NORTHSTAR Travel Media, LLC.",,"100 Lighting Way, Secaucus, NJ, 07094, US",US,,,,2009-06-23,https://rdap.arin.net/registry/entity/NTML
3,SUPN,"SupraNet Communications, Inc.",,"8000 Excelsior Dr., Suite 204, Madison, WI, 53717, US",US,,,,2020-08-18,https://rdap.arin.net/registry/entity/SUPN
2,ORG-DTA2-RIPE,Deutsche Telekom AG,LIR,"Eduard-Schopf-Allee 1, D-28217, Bremen, GERMANY",DE,,+4942151554041,+49391580100379,2026-02-05,RIPE
4,L-M,Luce McQuillin Corporation,,"1122 E. Pike St., Suite 1215, Seattle, WA, 98122, US",US,,,,2013-10-13,https://rdap.arin.net/registry/entity/L-M
1,USDDD,United States Department of Defense (DoD),,"3990 E. Broad Street, Columbus, OH, 43218, US",US,,,,2025-03-13,https://rdap.arin.net/registry/entity/USDDD
6,ORG-MS81-RIPE,EX MEDIA SA,OTHER,"Tudor Arghezi, 3B, Bucuresti, Sector 2, Romania, RO",RO,,+40.318256189,,2024-05-16,RIPE

4. File Relationship Diagram

The diagram below illustrates the relationships between the various files included in the CSV database package. It shows how the main CSV file connects to reference tables for person and organization handle files, ensuring consistent and accurate data across for all the records.

File Format & Encoding

All ASN Whois CSV datasets are provided in UTF-8 encoding, comma-separated, and compressed with Gzip (.csv.gz). Each file includes a header row listing the field names for clarity and consistency.

Field values are unquoted by default, with quotes applied only in the following cases:

Line breaks within text fields.
Commas inside a value (e.g., addresses).
Lists of values (e.g., languages).
Spaces that may be auto-quoted by export tools.

JSON Database Documentation

1. Overview

JSON version of the database consists of two files: one JSON file containing all the data (organization and contact handle details), a README file, and a checksum file, and one checksum file, all compressed together in a ZIP file for easy delivery.

2. Archive Content

After downloading and extracting the ASN Whois MMDB database archive, you'll find the following files (with their types noted):

db-asn-whois.json.gz

Full WHOIS details for ASN: name, country, domain, RIR, contact IDs, and raw WHOIS record.

File Size: 47.50 MB

Entries: 130.2K

README.md

Documentation for dataset contents, schema, usage, and support.

File Size: 9.19 KB

checksum.txt

SHA-256 checksums for verifying file integrity.

File Size: 163 Bytes

Response Schema

This section describes the structure of the data returned from the ASN Whois MMDB file. Each field is detailed with its type, meaning, and example values to help you interpret responses and integrate them into your applications.

1. db-asn-whois.json

This file contains detailed WHOIS mappings for both IPv4 and IPv6 address ranges. Below is an example of the structure you'll find in the response.

2. Field Reference

The following reference lists all fields available in the JSON response. Each entry includes the field path, its description, data type, and example value to help you understand how to parse and integrate the data.

Showing 10 of 56

Select a field to view details

I. Example Records

Example

{
  "asBlock": "AS622 - AS622",
  "autNum": "616 - 665",
  "country": "US",
  "domain": "mail.mil",
  "rir": "ARIN",
  "org": {
    "handle": "USDDD",
    "name": "United States Department of Defense (DoD)",
    "type": "",
    "address": "3990 E. Broad Street, Columbus, OH, 43218, US",
    "country": "US",
    "email": "",
    "phone": "",
    "fax": "",
    "dateUpdated": "2025-03-13",
    "source": "https://rdap.arin.net/registry/entity/USDDD"
  },
  "admin": null,
  "tech": [
    {
      "handle": "MIL-HSTMST-ARIN",
      "name": "Network DoD",
      "country": "",
      "email": "disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil",
      "phone": "+1-844-347-2457",
      "fax": "",
      "address": "",
      "dateUpdated": "",
      "source": "https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN"
    },
    {
      "handle": "REGIS10-ARIN",
      "name": "Registration",
      "country": "",
      "email": "disa.columbus.ns.mbx.arin-registrations@mail.mil",
      "phone": "+1-844-347-2457",
      "fax": "",
      "address": "",
      "dateUpdated": "",
      "source": "https://rdap.arin.net/registry/entity/REGIS10-ARIN"
    }
  ],
  "abuse": [
    {
      "handle": "MIL-HSTMST-ARIN",
      "name": "Network DoD",
      "country": "",
      "email": "disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil",
      "phone": "+1-844-347-2457",
      "fax": "",
      "address": "",
      "dateUpdated": "",
      "source": "https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN"
    }
  ],
  "irt": null,
  "bgp": null,
  "rawWhois": "\n#\n# ARIN WHOIS data and services are subject to the Terms of Use\n# available at: https://www.arin.net/resources/registry/whois/tou/\n#\n# If you see inaccuracies in the results, please report at\n# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/\n#\n# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.\n#\n\n\nASNumber:       616 - 665\nASName:         DNIC-ASBLK-00616-00665\nASHandle:       AS616\nRegDate:        1990-04-19\nUpdated:        2025-09-12\nRef:            https://rdap.arin.net/registry/autnum/616\n\n\n\nOrgName:        United States Department of Defense (DoD)\nOrgId:          USDDD\nAddress:        3990 E. Broad Street\nCity:           Columbus\nStateProv:      OH\nPostalCode:     43218\nCountry:        US\nRegDate:        2007-01-12\nUpdated:        2025-03-13\nRef:            https://rdap.arin.net/registry/entity/USDDD\n\n\nOrgAbuseHandle: MIL-HSTMST-ARIN\nOrgAbuseName:   Network DoD\nOrgAbusePhone:  +1-844-347-2457 \nOrgAbuseEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil\nOrgAbuseRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN\n\nOrgTechHandle: MIL-HSTMST-ARIN\nOrgTechName:   Network DoD\nOrgTechPhone:  +1-844-347-2457 \nOrgTechEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil\nOrgTechRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN\n\nOrgTechHandle: REGIS10-ARIN\nOrgTechName:   Registration\nOrgTechPhone:  +1-844-347-2457 \nOrgTechEmail:  disa.columbus.ns.mbx.arin-registrations@mail.mil\nOrgTechRef:    https://rdap.arin.net/registry/entity/REGIS10-ARIN\n\nOrgNOCHandle: MIL-HSTMST-ARIN\nOrgNOCName:   Network DoD\nOrgNOCPhone:  +1-844-347-2457 \nOrgNOCEmail:  disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil\nOrgNOCRef:    https://rdap.arin.net/registry/entity/MIL-HSTMST-ARIN\n\n\n#\n# ARIN WHOIS data and services are subject to the Terms of Use\n# available at: https://www.arin.net/resources/registry/whois/tou/\n#\n# If you see inaccuracies in the results, please report at\n# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/\n#\n# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.\n#\n",
  "dateCreated": "1990-04-19",
  "dateUpdated": "2025-09-12",
  "name": "DNIC-ASBLK-00616-00665"
}

Database Integrity & Authenticity Verification

There are two methods of verifying the integrity and authenticity of our Database:

1. Using the Signature File (Recommended)

IPGeolocation.io signs every database release to ensure its authenticity and integrity. This allows customers to verify that a downloaded ASN Whois database file originates directly from IPGeolocation.io and has not been altered, corrupted, or tampered with during transfer or storage.

Each database update includes a corresponding signature file, generated using our private signing key. Customers can validate the database using the provided public verification key. To verify a database file, you need:

Database file (the downloaded archive)
Signature file (the matching signature for that archive)
Public key (public-key.pem)

These files are available via official IPGeolocation.io download endpoints and are also shared in database update notifications.

Note

The public key may be provided as PEM-encoded text. Save it to a file named public-key.pem

Ensure OpenSSL is installed on your system. If not, install it using the following commands

On Linux, if openssl is not installed

sudo apt install openssl

Verify OpenSSL installation:

openssl version

To verify the database file, run the following command, replacing the placeholders with your actual file paths:

openssl dgst -sha256 -verify <path-to-public-key.pem> -signature <path-to-signature-file.sig> <path-to-database-file.zip>

Example output:

Verified OK

if verification FAILED do not use the file, re-download the database and signature from official IPGeolocation endpoints. If the issue persists, please contact our support team.

2. Using the Checksum File (Legacy)

Each database archive includes a checksum.txt file containing the SHA-256 checksums for the files packaged in the archive. You can use this file to validate that the extracted contents are complete and unchanged.

Tip

Always verify downloaded files with the provided checksum before importing.

On Linux, if sha256sum is not installed, first run:

sudo apt-get install coreutils

Then check the archive files against the checksum file with:

sha256sum -c checksum.txt

Example output:

db-asn-whois.csv.gz: OK
db-org-details.csv.gz: OK
db-handles-details.csv.gz: OK
db-asn-whois.json.gz: OK
README.md: OK

*your output may differ depending on the specific database archive you downloaded.

If a file's checksum does not match, FAILED will be shown instead of OK . If verification fails, first confirm that the download completed correctly; if the issue persists, please contact our support team.

Data Format & Constraints

All fields defined in the schema are always present in the ASN Whois JSON response.
Fields may contain empty strings (""), but never null, so null checks are not required.
Place names such as countries, states, districts, and cities are available in multiple translations.
All text values are encoded in UTF-8.
Field names and response structure remain stable across updates for backward compatibility.

Database Updates & Delivery

When you subscribe to our ASN Whois database, we'll send you static download links. These links never change, so you can use them both for your initial download and for all future updates. You will receive:

Database Archive URL : downloads the latest release of your subscribed database (CSV, MMDB or requested formats).
Signature File URL : downloads the matching signature file for the latest release (used for authenticity verification).
Public Key URL : downloads the public verification key (used with the signature file).
Status Endpoint URL : returns the database's most recent update timestamp.

Our databases are refreshed daily and weekly, ensuring you always have access to the most current data. Each time your subscribed dataset is updated, you'll also receive an email notification so you don't miss a release.

For automated workflows, you can check our status endpoint to see the last update timestamp. When the date changes, simply re-fetch the archive using your static download URL to pull the latest version into your system.

ASN Whois Database

Overview

Available Database Formats

CSV Database Documentation

1. Overview

2. Archive Content

Schema

1. db-asn-whois.csv.gz

I. Example Records

2. db-handles-details.csv.gz

I. Example Records

3. db-org-details.csv.gz

I. Example Records

4. File Relationship Diagram

File Format & Encoding

JSON Database Documentation

1. Overview

2. Archive Content

Response Schema

1. db-asn-whois.json

2. Field Reference

I. Example Records

Database Integrity & Authenticity Verification

1. Using the Signature File (Recommended)

2. Using the Checksum File (Legacy)

Data Format & Constraints

Database Updates & Delivery

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