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: 48.03 MB

Entries: 130.0K

Fields: 55

Last Updated: Today

Documentation

JSON

File Size: 47.35 MB

Entries: 130.0K

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: 38.40 MB

Entries: 130.0K

Fields: 14

db-org-details.csv.gz

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

File Size: 3.94 MB

Entries: 75.9K

Fields: 11

db-handles-details.csv.gz

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

File Size: 5.69 MB

Entries: 127.5K

Fields: 10

db-asn-whois.json.gz

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

File Size: 47.34 MB

README.md

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

File Size: 9.70 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
AS1331 - AS1331,1321 - 1340,ANSBB-ASNNET-1,US,verizonbusiness.com,ARIN,1,1,"2,3","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:       1321 - 1340
ASName:         ANSBB-ASNNET-1
ASHandle:       AS1321
RegDate:        1994-11-23
Updated:        2024-03-04    
Ref:            https://rdap.arin.net/registry/autnum/1321



OrgName:        Verizon Business
OrgId:          MCICS
Address:        22001 Loudoun County Pkwy
City:           Ashburn
StateProv:      VA
PostalCode:     20147
Country:        US
RegDate:        2006-05-30
Updated:        2025-10-28
Ref:            https://rdap.arin.net/registry/entity/MCICS


OrgTechHandle: SWIPP9-ARIN
OrgTechName:   SWIPPER
OrgTechPhone:  +1-800-900-0241 
OrgTechEmail:  IPMGMT@verizon.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SWIPP9-ARIN

OrgTechHandle: VIS1-ARIN
OrgTechName:   Verizon Internet Services
OrgTechPhone:  +1-800-243-6994 
OrgTechEmail:  IPMGMT@verizon.com
OrgTechRef:    https://rdap.arin.net/registry/entity/VIS1-ARIN

OrgAbuseHandle: ABUSE5603-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-800-900-0241 
OrgAbuseEmail:  abuse@verizon.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE5603-ARIN

OrgDNSHandle: VZDNS1-ARIN
OrgDNSName:   VZ-DNSADMIN
OrgDNSPhone:  +1-800-900-0241 
OrgDNSEmail:  dnsadmin@verizon.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/VZDNS1-ARIN

OrgAbuseHandle: ABUSE3-ARIN
OrgAbuseName:   abuse
OrgAbusePhone:  +1-800-900-0241 
OrgAbuseEmail:  abuse-mail@verizonbusiness.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3-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.
#
",1994-11-23,2024-03-04
AS1587 - AS1587,1550 - 1601,DNIC-ASBLK-01550-01601,US,mail.mil,ARIN,2,,"6,7",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:       1550 - 1601
ASName:         DNIC-ASBLK-01550-01601
ASHandle:       AS1550
RegDate:        2006-04-03
Updated:        2025-09-12    
Ref:            https://rdap.arin.net/registry/autnum/1550



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.
#
",2006-04-03,2025-09-12
AS3928 - AS3928,3928,VALLEY-TECH,US,null,ARIN,3,,8,8,,"
#
# 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:       3928
ASName:         VALLEY-TECH
ASHandle:       AS3928
RegDate:        1994-10-12
Updated:        1994-10-12    
Ref:            https://rdap.arin.net/registry/autnum/3928


OrgName:        Valley Tech Corporation
OrgId:          VTC-24
Address:        2200 Space Park Drive, Ste. 200
City:           Houston
StateProv:      TX
PostalCode:     77058
Country:        US
RegDate:        1994-10-12
Updated:        2012-10-10
Ref:            https://rdap.arin.net/registry/entity/VTC-24


OrgAbuseHandle: JP221-ARIN
OrgAbuseName:   Phelps, John 
OrgAbusePhone:  +1-713-335-0224 
OrgAbuseEmail:  
OrgAbuseRef:    https://rdap.arin.net/registry/entity/JP221-ARIN

OrgTechHandle: JP221-ARIN
OrgTechName:   Phelps, John 
OrgTechPhone:  +1-713-335-0224 
OrgTechEmail:  
OrgTechRef:    https://rdap.arin.net/registry/entity/JP221-ARIN

RTechHandle: JP221-ARIN
RTechName:   Phelps, John 
RTechPhone:  +1-713-335-0224 
RTechEmail:  
RTechRef:    https://rdap.arin.net/registry/entity/JP221-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.
#
",1994-10-12,1994-10-12
AS7751 - AS7751,7751,DANCRIS,US,extremezone.com,ARIN,4,,"9,10",10,,"
#
# 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:       7751
ASName:         DANCRIS
ASHandle:       AS7751
RegDate:        1997-01-02
Updated:        1997-01-02    
Ref:            https://rdap.arin.net/registry/autnum/7751


OrgName:        Dancris Telecom L.L.C
OrgId:          DANC
Address:        6900 E. CAMELBACK RD SUITE 1003
City:           Scottsdale
StateProv:      AZ
PostalCode:     85251
Country:        US
RegDate:        1996-09-16
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/DANC


OrgAbuseHandle: CKN23-ARIN
OrgAbuseName:   No, Contact Known
OrgAbusePhone:  +1-800-555-1234 
OrgAbuseEmail:  nobody@example.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CKN23-ARIN

OrgTechHandle: CKN23-ARIN
OrgTechName:   No, Contact Known
OrgTechPhone:  +1-800-555-1234 
OrgTechEmail:  nobody@example.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CKN23-ARIN

RTechHandle: LB27-ARIN
RTechName:   Burton, Lee 
RTechPhone:  +1-602-368-4637 
RTechEmail:  lburton@extremezone.com
RTechRef:    https://rdap.arin.net/registry/entity/LB27-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.
#
",1997-01-02,1997-01-02
AS8192 - AS8523,8322,TDC,DK,abuse.mail.dk,RIPE,5,11,11,,,"% 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 'AS8192 - AS8523'

as-block:       AS8192 - AS8523
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:        2018-11-22T15:27:23Z
last-modified:  2018-11-22T15:27:23Z
source:         RIPE

% Information related to 'AS8322'

% Abuse contact for 'AS8322' is 'postmaster@abuse.mail.dk'

aut-num:        AS8322
org:            ORG-TD1-RIPE
as-name:        TDC
import:         from AS3292
                action pref=100;
                accept ANY
export:         to AS3292
                announce AS8322
admin-c:        AS5071-RIPE
tech-c:         AS5071-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         AS3292-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2017-11-15T09:16:30Z
source:         RIPE

organisation:   ORG-TD1-RIPE
org-name:       TDC Holding A/S
country:        DK
org-type:       LIR
address:        Sletvej 30
address:        DK-8310
address:        Tranbjerg J
address:        DENMARK
phone:          +45 7070 3000
admin-c:        NCB1-RIPE
admin-c:        MDBO1-RIPE
admin-c:        MBP137-RIPE
abuse-c:        TDCA2-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        AS3292-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS3292-MNT
created:        2004-04-17T11:14:52Z
last-modified:  2024-05-29T09:36:48Z
source:         RIPE # Filtered

role:           AS3292 Staff
address:        TDC A/S
address:        Sletvej 30, 8-062
address:        DK-8310 Tranbjerg
address:        Denmark
remarks:        contact info: http://as3292.peeringdb.com
admin-c:        NCB1-RIPE
admin-c:        MBP137-RIPE
tech-c:         NCB1-RIPE
tech-c:         CP11490-RIPE
tech-c:         MBP137-RIPE
nic-hdl:        AS5071-RIPE
mnt-by:         AS3292-MNT
created:        2002-07-02T13:36:00Z
last-modified:  2024-05-21T09:07:14Z
source:         RIPE # Filtered

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

",1970-01-01,2017-11-15
null,null,null,null,null,null,null,,,,,null,null,null
null,null,null,null,null,null,null,,,,,null,null,null
AS14737 - AS14737,14737,CCCOES,US,cccs.edu,ARIN,6,,12,12,,"
#
# 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:       14737
ASName:         CCCOES
ASHandle:       AS14737
RegDate:        2000-02-01
Updated:        2017-10-30    
Ref:            https://rdap.arin.net/registry/autnum/14737


OrgName:        Colorado Community College and Occupational Education System
OrgId:          CCCOS
Address:        9101 E Lowry Blvd
City:           Denver
StateProv:      CO
PostalCode:     80230-6011
Country:        US
RegDate:        2000-02-01
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/CCCOS


OrgAbuseHandle: HOSTM633-ARIN
OrgAbuseName:   Hostmaster
OrgAbusePhone:  +1-720-858-2821 
OrgAbuseEmail:  Katherine.Stevenson@cccs.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/HOSTM633-ARIN

OrgTechHandle: HOSTM633-ARIN
OrgTechName:   Hostmaster
OrgTechPhone:  +1-720-858-2821 
OrgTechEmail:  Katherine.Stevenson@cccs.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/HOSTM633-ARIN

RTechHandle: HOSTM633-ARIN
RTechName:   Hostmaster
RTechPhone:  +1-720-858-2821 
RTechEmail:  Katherine.Stevenson@cccs.edu
RTechRef:    https://rdap.arin.net/registry/entity/HOSTM633-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.
#
",2000-02-01,2017-10-30
AS20485 - AS20857,null,null,null,null,null,null,,,,,"% 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 'AS20485 - AS20857'

as-block:       AS20485 - AS20857
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:        2018-11-22T15:27:27Z
last-modified:  2018-11-22T15:27:27Z
source:         RIPE

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

",2018-11-22,2018-11-22
AS23552 - AS24575,24163,UBBNET-AS-TW,TW,twnic.net.tw,APNIC,null,13,13,14,,"% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS23552 - AS24575'

as-block:       AS23552 - AS24575
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
remarks:        AS23889 has been transfered to AfriNIC
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2009-09-29T06:04:16Z
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 'AS24153 - AS24172'

as-block:       AS24153 - AS24172
descr:          TWNIC-TW-AS-BLOCK9
remarks:        These AS numbers are further assigned by TWNIC
remarks:        to TWNIC members
admin-c:        TWA2-AP
tech-c:         TWA2-AP
mnt-by:         MAINT-TW-TWNIC
mnt-lower:      MAINT-TW-TWNIC
last-modified:  2008-09-04T06:40:26Z
source:         APNIC

role:           TWNIC Whois Administrator
address:        Taiwan Network Information Center
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist.,
address:        Taipei, Taiwan, 105
country:        TW
phone:          +886-2-25289696
fax-no:         +886-2-25287756
e-mail:         hostmaster@twnic.net.tw
admin-c:        ck373-AP
tech-c:         TW922-AP
tech-c:         NS10-AP
nic-hdl:        TWA2-AP
notify:         hostmaster@twnic.net.tw
mnt-by:         MAINT-TW-TWNIC
last-modified:  2020-01-02T03:54:20Z
source:         APNIC

% Information related to 'AS24163'

% Abuse contact for 'AS24163' is 'abuse@twmbroadband.net'

aut-num:        AS24163
as-name:        UBBNET-AS-TW
descr:          UNION BROADBAND NETWORK
descr:          13F, No. 27, Sec. 1st, An-He Rd., Da-an District
descr:          Taipei Taiwan 106
country:        TW
import:         from AS9924 action pref=100; accept ANY
import:         from AS4662 action pref=100; accept ANY
export:         to AS9924 announce AS24163
export:         to AS4662 announce AS24163
default:        to AS9924 action pref=100; networks ANY
admin-c:        EL678-AP
tech-c:         EL678-AP
abuse-c:        AT939-AP
notify:         EvansLin@twmbroadband.net
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-UBBNET-TW
last-modified:  2025-11-06T09:27:07Z
source:         APNIC

irt:            IRT-UBBNET-TW
address:        TFN MEDIA CO., LTD.
address:        11F., No.98, Zhouzi St., Neihu Dist., Taipei City 114, Taiwan (R.O.C.)
address:        Taipei
phone:          +886-2-6636-8887
e-mail:         adm@twmbroadband.net
abuse-mailbox:  abuse@twmbroadband.net
admin-c:        TR600-AP
tech-c:         TR600-AP
remarks:        (oid:UBBNET)
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-11-06T07:53:53Z
source:         APNIC
auth:           # Filtered

role:           ABUSE TWNICAP
country:        ZZ
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
phone:          +000000000
e-mail:         hostmaster@twnic.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
nic-hdl:        AT939-AP
remarks:        Generated from irt object IRT-TWNIC-AP
remarks:        hostmaster@twnic.tw was validated on 2025-05-23
abuse-mailbox:  hostmaster@twnic.tw
mnt-by:         APNIC-ABUSE
last-modified:  2025-05-23T00:02:10Z
source:         APNIC

person:         Evans Lin
nic-hdl:        EL678-AP
e-mail:         EvansLin@twmbroadband.net
address:        11F., No.98, Zhouzi St., Neihu Dist., Taipei City 114, Taiwan (R.O.C.)
address:        Taipei City, 114, R.O.C
phone:          +886-2-6636-8887 ext. 11672
fax-no:         +886-2-6611-2115
country:        TW
mnt-by:         MAINT-TW-TWNIC
last-modified:  2019-12-17T01:50:47Z
source:         APNIC

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

",null,2025-11-06

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
6,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
11,AS5071-RIPE,AS3292 Staff,DENMARK,,,,"TDC A/S, Sletvej 30, 8-062, DK-8310 Tranbjerg, Denmark",2024-05-21,RIPE
5,ABUSE3-ARIN,abuse,,abuse-mail@verizonbusiness.com,+1-800-900-0241,,,,https://rdap.arin.net/registry/entity/ABUSE3-ARIN
3,VIS1-ARIN,Verizon Internet Services,,IPMGMT@verizon.com,+1-800-243-6994,,,,https://rdap.arin.net/registry/entity/VIS1-ARIN
1,VZDNS1-ARIN,VZ-DNSADMIN,,dnsadmin@verizon.com,+1-800-900-0241,,,,https://rdap.arin.net/registry/entity/VZDNS1-ARIN
7,REGIS10-ARIN,Registration,,disa.columbus.ns.mbx.arin-registrations@mail.mil,+1-844-347-2457,,,,https://rdap.arin.net/registry/entity/REGIS10-ARIN
8,JP221-ARIN,"Phelps, John",,,+1-713-335-0224,,,,https://rdap.arin.net/registry/entity/JP221-ARIN
10,CKN23-ARIN,"No, Contact Known",,nobody@example.com,+1-800-555-1234,,,,https://rdap.arin.net/registry/entity/CKN23-ARIN
13,EL678-AP,Evans Lin,TW,EvansLin@twmbroadband.net,+886-2-6636-8887 ext. 11672,+886-2-6611-2115,"11F., No.98, Zhouzi St., Neihu Dist., Taipei City 114, Taiwan (R.O.C.), Taipei City, 114, R.O.C",2019-12-17,APNIC
9,LB27-ARIN,"Burton, Lee",,lburton@extremezone.com,+1-602-368-4637,,,,https://rdap.arin.net/registry/entity/LB27-ARIN
12,HOSTM633-ARIN,Hostmaster,,Katherine.Stevenson@cccs.edu,+1-720-858-2821,,,,https://rdap.arin.net/registry/entity/HOSTM633-ARIN
14,AT939-AP,ABUSE TWNICAP,ZZ,hostmaster@twnic.tw,+000000000,,"3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan",2025-05-23,APNIC
4,ABUSE5603-ARIN,Abuse,,abuse@verizon.com,+1-800-900-0241,,,,https://rdap.arin.net/registry/entity/ABUSE5603-ARIN
2,SWIPP9-ARIN,SWIPPER,,IPMGMT@verizon.com,+1-800-900-0241,,,,https://rdap.arin.net/registry/entity/SWIPP9-ARIN

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
6,CCCOS,Colorado Community College and Occupational Education System,,"9101 E Lowry Blvd, Denver, CO, 80230-6011, US",US,,,,2011-09-24,https://rdap.arin.net/registry/entity/CCCOS
5,ORG-TD1-RIPE,TDC Holding A/S,LIR,"Sletvej 30, DK-8310, Tranbjerg J, DENMARK",DK,,+45 7070 3000,,2024-05-29,RIPE
3,VTC-24,Valley Tech Corporation,,"2200 Space Park Drive, Ste. 200, Houston, TX, 77058, US",US,,,,2012-10-10,https://rdap.arin.net/registry/entity/VTC-24
1,MCICS,Verizon Business,,"22001 Loudoun County Pkwy, Ashburn, VA, 20147, US",US,,,,2025-10-28,https://rdap.arin.net/registry/entity/MCICS
4,DANC,Dancris Telecom L.L.C,,"6900 E. CAMELBACK RD SUITE 1003, Scottsdale, AZ, 85251, US",US,,,,2011-09-24,https://rdap.arin.net/registry/entity/DANC
2,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

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: 47.34 MB

Entries: 130.0K

README.md

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

File Size: 9.70 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": "AS1331 - AS1331",
  "autNum": "1321 - 1340",
  "country": "US",
  "domain": "verizonbusiness.com",
  "rir": "ARIN",
  "org": {
    "handle": "MCICS",
    "name": "Verizon Business",
    "type": "",
    "address": "22001 Loudoun County Pkwy, Ashburn, VA, 20147, US",
    "country": "US",
    "email": "",
    "phone": "",
    "fax": "",
    "dateUpdated": "2025-10-28",
    "source": "https://rdap.arin.net/registry/entity/MCICS"
  },
  "admin": [
    {
      "handle": "VZDNS1-ARIN",
      "name": "VZ-DNSADMIN",
      "country": "",
      "email": "dnsadmin@verizon.com",
      "phone": "+1-800-900-0241",
      "fax": "",
      "address": "",
      "dateUpdated": "",
      "source": "https://rdap.arin.net/registry/entity/VZDNS1-ARIN"
    }
  ],
  "tech": [
    {
      "handle": "SWIPP9-ARIN",
      "name": "SWIPPER",
      "country": "",
      "email": "IPMGMT@verizon.com",
      "phone": "+1-800-900-0241",
      "fax": "",
      "address": "",
      "dateUpdated": "",
      "source": "https://rdap.arin.net/registry/entity/SWIPP9-ARIN"
    },
    {
      "handle": "VIS1-ARIN",
      "name": "Verizon Internet Services",
      "country": "",
      "email": "IPMGMT@verizon.com",
      "phone": "+1-800-243-6994",
      "fax": "",
      "address": "",
      "dateUpdated": "",
      "source": "https://rdap.arin.net/registry/entity/VIS1-ARIN"
    }
  ],
  "abuse": [
    {
      "handle": "ABUSE5603-ARIN",
      "name": "Abuse",
      "country": "",
      "email": "abuse@verizon.com",
      "phone": "+1-800-900-0241",
      "fax": "",
      "address": "",
      "dateUpdated": "",
      "source": "https://rdap.arin.net/registry/entity/ABUSE5603-ARIN"
    },
    {
      "handle": "ABUSE3-ARIN",
      "name": "abuse",
      "country": "",
      "email": "abuse-mail@verizonbusiness.com",
      "phone": "+1-800-900-0241",
      "fax": "",
      "address": "",
      "dateUpdated": "",
      "source": "https://rdap.arin.net/registry/entity/ABUSE3-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:       1321 - 1340\nASName:         ANSBB-ASNNET-1\nASHandle:       AS1321\nRegDate:        1994-11-23\nUpdated:        2024-03-04    \nRef:            https://rdap.arin.net/registry/autnum/1321\n\n\n\nOrgName:        Verizon Business\nOrgId:          MCICS\nAddress:        22001 Loudoun County Pkwy\nCity:           Ashburn\nStateProv:      VA\nPostalCode:     20147\nCountry:        US\nRegDate:        2006-05-30\nUpdated:        2025-10-28\nRef:            https://rdap.arin.net/registry/entity/MCICS\n\n\nOrgTechHandle: SWIPP9-ARIN\nOrgTechName:   SWIPPER\nOrgTechPhone:  +1-800-900-0241 \nOrgTechEmail:  IPMGMT@verizon.com\nOrgTechRef:    https://rdap.arin.net/registry/entity/SWIPP9-ARIN\n\nOrgTechHandle: VIS1-ARIN\nOrgTechName:   Verizon Internet Services\nOrgTechPhone:  +1-800-243-6994 \nOrgTechEmail:  IPMGMT@verizon.com\nOrgTechRef:    https://rdap.arin.net/registry/entity/VIS1-ARIN\n\nOrgAbuseHandle: ABUSE5603-ARIN\nOrgAbuseName:   Abuse\nOrgAbusePhone:  +1-800-900-0241 \nOrgAbuseEmail:  abuse@verizon.com\nOrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE5603-ARIN\n\nOrgDNSHandle: VZDNS1-ARIN\nOrgDNSName:   VZ-DNSADMIN\nOrgDNSPhone:  +1-800-900-0241 \nOrgDNSEmail:  dnsadmin@verizon.com\nOrgDNSRef:    https://rdap.arin.net/registry/entity/VZDNS1-ARIN\n\nOrgAbuseHandle: ABUSE3-ARIN\nOrgAbuseName:   abuse\nOrgAbusePhone:  +1-800-900-0241 \nOrgAbuseEmail:  abuse-mail@verizonbusiness.com\nOrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3-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": "1994-11-23",
  "dateUpdated": "2024-03-04",
  "name": "ANSBB-ASNNET-1"
}

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.

Tip

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.

Note

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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