ASN AS7497 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS7497?

AS7497 is listed under CNIC CAS.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS7497 CNIC CAS | IPGeolocation.io

CNIC CAS cnic.cn

CN 631 Routes

AS Data

AS7497

AS7497 – CNIC CAS

AS Number	7497
AS Name	CSTNET-AS-AP
Organization	CNIC CAS (org-ca107-ap)
Country	CN
Website	cnic.cn
Number of IPv4 Routes	457
Number of IPv6 Routes	174
ASN type	ISP
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS7497 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
119.78.209.0/24	AS7497	CNIC CAS	CNIC CAS	256
2400:dd02:1004::/48	AS7497	CNIC CAS	CNIC CAS	~1×10²⁴
119.78.130.0/23	AS7497	CNIC CAS	CNIC CAS	512
119.78.96.0/23	AS7497	CNIC CAS	CNIC CAS	512
2400:dd03:1002::/48	AS7497	CNIC CAS	CNIC CAS	~1×10²⁴
2400:dd01:3010::/48	AS7497	CNIC CAS	CNIC CAS	~1×10²⁴
2400:dd01:1006::/48	AS7497	CNIC CAS	CNIC CAS	~1×10²⁴
2400:dd01:1036::/48	AS7497	CNIC CAS	CNIC CAS	~1×10²⁴
60.245.196.0/24	AS7497	CNIC CAS	CNIC CAS	256
210.72.146.0/24	AS7497	CNIC CAS	CNIC CAS	256

Raw Whois Response

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS7467 - AS7722'

as-block:       AS7467 - AS7722
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:  2008-09-04T06:40:26Z
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 'AS7497'

% Abuse contact for 'AS7497' is 'abuse-ip@cstnet.cn'

aut-num:        AS7497
as-name:        CSTNET-AS-AP
descr:          Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
country:        CN
import:         from AS4538 accept <^AS4538>
import:         from AS4789 accept <^AS4789>
import:         from AS4837 accept <^AS4837>
import:         from AS4847 accept <^AS4847>
import:         from AS9306 accept <^AS9306>
import:         from AS9389 accept <^AS9389>
import:         from AS9394 accept <^AS9394>
import:         from AS9406 accept <^AS9406>
import:         from AS9800 accept <^AS9800>
import:         from AS9808 accept <^AS9808>
import:         from AS3320 accept ANY
import:         from AS3491 accept ANY
import:         from AS6453 accept ANY
import:         from AS10026 accept ANY
import:         from AS7497:AS-CUSTOMERS accept <^AS7497:AS-CUSTOMERS>
export:         to AS4538 announce <^AS7497>
export:         to AS4789 announce <^AS7497>
export:         to AS4837 announce <^AS7497>
export:         to AS4847 announce <^AS7497>
export:         to AS9306 announce <^AS7497>
export:         to AS9389 announce <^AS7497>
export:         to AS9394 announce <^AS7497>
export:         to AS9406 announce <^AS7497>
export:         to AS9800 announce <^AS7497>
export:         to AS9808 announce <^AS7497>
export:         to AS3320 announce <^AS7497>
export:         to AS3491 announce <^AS7497>
export:         to AS6453 announce <^AS7497>
export:         to AS10026 announce <^AS7497>
export:         to AS7497:AS-CUSTOMERS announce ANY
export:         to AS3320 announce <^AS7497:AS-CUSTOMERS>
export:         to AS3491 announce <^AS7497:AS-CUSTOMERS>
export:         to AS6453 announce <^AS7497:AS-CUSTOMERS>
export:         to AS10026 announce <^AS7497:AS-CUSTOMERS>
org:            ORG-CA107-AP
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
abuse-c:        AC2741-AP
mnt-lower:      MAINT-CSTNET-CN
mnt-routes:     MAINT-CSTNET-CN
mnt-by:         APNIC-HM
mnt-irt:        IRT-CSTNET-CN
last-modified:  2023-10-09T04:01:57Z
source:         APNIC

irt:            IRT-CSTNET-CN
address:        2 Dongsheng South Road, Haidian District, Beijing Beijing 100190
e-mail:         abuse-ip@cstnet.cn
abuse-mailbox:  abuse-ip@cstnet.cn
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
auth:           # Filtered
remarks:        abuse-ip@cstnet.cn is invalid
mnt-by:         MAINT-CSTNET-CN
last-modified:  2026-02-11T13:10:17Z
source:         APNIC

organisation:   ORG-CA107-AP
org-name:       CNIC-CAS
org-type:       LIR
country:        CN
address:        2 Dongsheng South Road, Haidian District
phone:          +86.10.58812266
e-mail:         support@cnic.cn
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:18:50Z
source:         APNIC

role:           ABUSE CSTNETCN
country:        ZZ
address:        2 Dongsheng South Road, Haidian District, Beijing Beijing 100190
phone:          +000000000
e-mail:         abuse-ip@cstnet.cn
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
nic-hdl:        AC2741-AP
remarks:        Generated from irt object IRT-CSTNET-CN
remarks:        abuse-ip@cstnet.cn is invalid
abuse-mailbox:  abuse-ip@cstnet.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-02-11T13:11:38Z
source:         APNIC

role:           Computer Network Information Center of Chinese Academy of Sciences administrator
address:        2 Dongsheng South Road, Haidian District, Beijing Beijing 100190
country:        CN
phone:          +86.10.58812266
e-mail:         supervise@cnic.cn
admin-c:        CNIC1-AP
tech-c:         CNIC1-AP
nic-hdl:        CNIC1-AP
mnt-by:         MAINT-CNICOCAOS-CN
last-modified:  2022-05-12T07:31:01Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-SG1)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS7467 - AS7722",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS7497",
    "as_name" : "CSTNET-AS-AP",
    "description" : [ "Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)" ],
    "country" : "CN",
    "import" : [ "from AS4538 accept <^AS4538>", "from AS4789 accept <^AS4789>", "from AS4837 accept <^AS4837>", "from AS4847 accept <^AS4847>", "from AS9306 accept <^AS9306>", "from AS9389 accept <^AS9389>", "from AS9394 accept <^AS9394>", "from AS9406 accept <^AS9406>", "from AS9800 accept <^AS9800>", "from AS9808 accept <^AS9808>", "from AS3320 accept ANY", "from AS3491 accept ANY", "from AS6453 accept ANY", "from AS10026 accept ANY", "from AS7497:AS-CUSTOMERS accept <^AS7497:AS-CUSTOMERS>" ],
    "export" : [ "to AS4538 announce <^AS7497>", "to AS4789 announce <^AS7497>", "to AS4837 announce <^AS7497>", "to AS4847 announce <^AS7497>", "to AS9306 announce <^AS7497>", "to AS9389 announce <^AS7497>", "to AS9394 announce <^AS7497>", "to AS9406 announce <^AS7497>", "to AS9800 announce <^AS7497>", "to AS9808 announce <^AS7497>", "to AS3320 announce <^AS7497>", "to AS3491 announce <^AS7497>", "to AS6453 announce <^AS7497>", "to AS10026 announce <^AS7497>", "to AS7497:AS-CUSTOMERS announce ANY", "to AS3320 announce <^AS7497:AS-CUSTOMERS>", "to AS3491 announce <^AS7497:AS-CUSTOMERS>", "to AS6453 announce <^AS7497:AS-CUSTOMERS>", "to AS10026 announce <^AS7497:AS-CUSTOMERS>" ],
    "organization" : "ORG-CA107-AP",
    "admin_contacts" : [ "CNIC1-AP" ],
    "tech_contacts" : [ "CNIC1-AP" ],
    "abuse_contacts" : [ "AC2741-AP" ],
    "mnt_irt" : [ "IRT-CSTNET-CN" ],
    "mnt_lower" : [ "MAINT-CSTNET-CN" ],
    "mnt_routes" : [ "MAINT-CSTNET-CN" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-10-09",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-CSTNET-CN",
    "address" : [ "2 Dongsheng South Road, Haidian District, Beijing Beijing 100190" ],
    "street" : "Dongsheng South Road",
    "city" : "Beijing Beijing",
    "zip_code" : "100190",
    "email" : [ "abuse-ip@cstnet.cn" ],
    "abuse_mailbox" : [ "abuse-ip@cstnet.cn" ],
    "admin_contacts" : [ "CNIC1-AP" ],
    "tech_contacts" : [ "CNIC1-AP" ],
    "remarks" : [ "abuse-ip@cstnet.cn is invalid" ],
    "mnt_by" : [ "MAINT-CSTNET-CN" ],
    "date_updated" : "2026-02-11",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-CA107-AP",
    "name" : "CNIC-CAS",
    "type" : "LIR",
    "address" : [ "2 Dongsheng South Road, Haidian District" ],
    "street" : "Dongsheng South Road",
    "country" : [ "CN" ],
    "email" : [ "support@cnic.cn" ],
    "phone" : [ "+86.10.58812266" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "CNIC1-AP",
    "name" : "Computer Network Information Center of Chinese Academy of Sciences administrator",
    "address" : [ "2 Dongsheng South Road, Haidian District, Beijing Beijing 100190" ],
    "street" : "Dongsheng South Road",
    "city" : "Beijing Beijing",
    "zip_code" : "100190",
    "country" : "CN",
    "email" : [ "supervise@cnic.cn" ],
    "phone" : [ "+86.10.58812266" ],
    "admin_contacts" : [ "CNIC1-AP" ],
    "tech_contacts" : [ "CNIC1-AP" ],
    "mnt_by" : [ "MAINT-CNICOCAOS-CN" ],
    "date_updated" : "2022-05-12",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "CNIC1-AP",
    "name" : "Computer Network Information Center of Chinese Academy of Sciences administrator",
    "address" : [ "2 Dongsheng South Road, Haidian District, Beijing Beijing 100190" ],
    "street" : "Dongsheng South Road",
    "city" : "Beijing Beijing",
    "zip_code" : "100190",
    "country" : "CN",
    "email" : [ "supervise@cnic.cn" ],
    "phone" : [ "+86.10.58812266" ],
    "admin_contacts" : [ "CNIC1-AP" ],
    "tech_contacts" : [ "CNIC1-AP" ],
    "mnt_by" : [ "MAINT-CNICOCAOS-CN" ],
    "date_updated" : "2022-05-12",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AC2741-AP",
    "name" : "ABUSE CSTNETCN",
    "address" : [ "2 Dongsheng South Road, Haidian District, Beijing Beijing 100190" ],
    "street" : "Dongsheng South Road",
    "city" : "Beijing Beijing",
    "zip_code" : "100190",
    "country" : "ZZ",
    "email" : [ "abuse-ip@cstnet.cn" ],
    "abuse_mailbox" : [ "abuse-ip@cstnet.cn" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "CNIC1-AP" ],
    "tech_contacts" : [ "CNIC1-AP" ],
    "remarks" : [ "Generated from irt object IRT-CSTNET-CN", "abuse-ip@cstnet.cn is invalid" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-02-11",
    "source" : "APNIC"
  } ]
}

Peers

AS Number	Description	Country
AS4837	China Unicom Backbone	CN
AS7660	Asia Pacific Advanced Network - Japan	JP
AS6939	Hurricane Electric LLC	US
AS8359	MTS PJSC	RU
AS2907	Research Organization of Information and Systems, National Institute of Informatics	JP
AS9808	China Mobile Communications Group Co., Ltd.	CN
AS63555	Beijing Beilong Yunhai Network Data Technology Corporation	CN
AS293	ESnet	US
AS4134	China Telecom Backbone	CN
AS9394	China TieTong Telecommunications Corporation	CN

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS20965	GEANT Vereniging	NL
AS9808	China Mobile	CN
AS6939	Hurricane Electric LLC	US
AS8359	MTS PJSC	RU
AS4635	The Hong Kong Internet Exchange Limited	HK
AS174	Cogent Communications, LLC	US
AS2907	Research Organization of Information and Systems, National Institute of Informatics	JP
AS23855	SingAREN	SG
AS3491	PCCW Global HK Limited	HK

Downstreams

AS Number	Description	Country
AS63555	Beijing Beilong Yunhai Network Data Technology Corporation	CN
AS24151	China Internet Network Infomation Center	CN
AS3491	PCCW Global HK Limited	HK
AS4538	Tsinghua University	CN
AS38345	Internet Domain Name System Beijing Engineering Resrarch Center Ltd.	CN