AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
IPv4 addresses
859,648
IPv6 /48 networks
1,179,648
RPKI
632 valid0 no ROA
Peers and downstreams
22
Holder
- AS name
- CSTNET-AS-AP
- Description
- Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
- Organisation
- CNIC-CAS
- Abuse contact
- Not published
- Assigned
- 1997-04-07
- Registered
- 2023-10-09
- Record last changed
- 2023-10-09 04:01 UTC
101.252.0.0/15103.2.208.0/22119.78.0.0/15119.78.100.0/24119.78.101.0/24119.78.103.0/24119.78.104.0/22119.78.128.0/23119.78.130.0/23119.78.132.0/22119.78.160.0/22119.78.165.0/24119.78.167.0/24119.78.168.0/22119.78.172.0/23119.78.2.0/24119.78.209.0/24119.78.210.0/24119.78.212.0/24119.78.213.0/24119.78.214.0/24119.78.216.0/24119.78.218.0/24119.78.224.0/19119.78.224.0/23119.78.226.0/23119.78.232.0/24119.78.234.0/24119.78.236.0/22119.78.241.0/24119.78.242.0/24119.78.243.0/24119.78.248.0/22119.78.253.0/24119.78.254.0/24119.78.255.0/24119.78.4.0/23119.78.6.0/24119.78.64.0/20119.78.64.0/24119.78.7.0/24119.78.78.0/23119.78.80.0/23119.78.84.0/23119.78.96.0/23119.78.98.0/23119.79.246.0/23119.79.248.0/21124.16.0.0/15124.16.0.0/23124.16.10.0/23124.16.10.0/24124.16.130.0/23124.16.132.0/23124.16.134.0/24124.16.136.0/22124.16.14.0/23124.16.140.0/23124.16.142.0/23124.16.144.0/22124.16.149.0/24124.16.150.0/23124.16.152.0/24124.16.154.0/24124.16.156.0/23124.16.158.0/24124.16.160.0/22124.16.164.0/24124.16.165.0/24124.16.166.0/23124.16.170.0/23124.16.173.0/24124.16.174.0/23124.16.176.0/22124.16.180.0/24124.16.184.0/23124.16.186.0/24124.16.189.0/24124.16.190.0/24124.16.2.0/23124.16.208.0/22124.16.212.0/24124.16.213.0/24124.16.214.0/24124.16.218.0/23124.16.220.0/23124.16.224.0/22124.16.228.0/23124.16.230.0/23124.16.232.0/22124.16.240.0/24124.16.241.0/24124.16.242.0/24124.16.243.0/24124.16.244.0/22124.16.248.0/24124.16.249.0/24124.16.250.0/24124.16.251.0/24124.16.253.0/24124.16.255.0/24124.16.26.0/23124.16.29.0/24124.16.31.0/24124.16.4.0/22124.16.64.0/18124.16.64.0/19124.16.76.0/22124.16.8.0/24124.16.84.0/22124.16.88.0/22124.16.9.0/24124.16.96.0/23124.17.1.0/24124.17.13.0/24124.17.2.0/24124.17.3.0/24124.17.30.0/23124.17.32.0/23124.17.34.0/23124.17.36.0/24124.17.38.0/23124.17.4.0/24124.17.40.0/24124.17.41.0/24124.17.5.0/24124.17.6.0/23124.17.80.0/21124.17.88.0/24124.17.90.0/24124.17.92.0/24124.17.96.0/19159.226.0.0/16159.226.100.0/24159.226.102.0/24159.226.103.0/24159.226.104.0/24159.226.109.0/24159.226.11.0/24159.226.110.0/23159.226.112.0/24159.226.115.0/24159.226.116.0/24159.226.118.0/24159.226.121.0/24159.226.123.0/24159.226.124.0/24159.226.125.0/24159.226.126.0/23159.226.128.0/24159.226.129.0/24159.226.130.0/24159.226.131.0/24159.226.132.0/23159.226.139.0/24159.226.14.0/24159.226.140.0/23159.226.142.0/24159.226.143.0/24159.226.145.0/24159.226.146.0/24159.226.147.0/24159.226.148.0/24159.226.149.0/24159.226.150.0/24159.226.151.0/24159.226.152.0/24159.226.153.0/24159.226.155.0/24159.226.156.0/24159.226.158.0/24159.226.159.0/24159.226.16.0/23159.226.160.0/24159.226.161.0/24159.226.162.0/24159.226.163.0/24159.226.166.0/24159.226.167.0/24159.226.168.0/23159.226.170.0/23159.226.172.0/24159.226.173.0/24159.226.174.0/24159.226.175.0/24159.226.176.0/22159.226.180.0/23159.226.182.0/24159.226.185.0/24159.226.186.0/24159.226.188.0/23159.226.19.0/24159.226.190.0/23159.226.192.0/22159.226.196.0/22159.226.20.0/23159.226.200.0/24159.226.202.0/23159.226.204.0/24159.226.205.0/24159.226.216.0/23159.226.219.0/24159.226.22.0/23159.226.222.0/24159.226.224.0/24159.226.226.0/24159.226.228.0/24159.226.230.0/23159.226.232.0/24159.226.233.0/24159.226.235.0/24159.226.236.0/23159.226.238.0/24159.226.24.0/24159.226.240.0/24159.226.241.0/24159.226.242.0/23159.226.244.0/24159.226.245.0/24159.226.246.0/23159.226.249.0/24159.226.27.0/24159.226.28.0/23159.226.30.0/24159.226.31.0/24159.226.32.0/23159.226.34.0/24159.226.35.0/24159.226.36.0/23159.226.39.0/24159.226.40.0/23159.226.43.0/24159.226.44.0/24159.226.47.0/24159.226.49.0/24159.226.5.0/24159.226.50.0/23159.226.52.0/22159.226.58.0/24159.226.59.0/24159.226.6.0/23159.226.60.0/24159.226.63.0/24159.226.67.0/24159.226.68.0/24159.226.69.0/24159.226.71.0/24159.226.72.0/24159.226.73.0/24159.226.74.0/24159.226.75.0/24159.226.76.0/24159.226.77.0/24159.226.79.0/24159.226.84.0/23159.226.88.0/24159.226.89.0/24159.226.90.0/23159.226.92.0/24159.226.94.0/23159.226.96.0/24159.226.97.0/24202.122.32.0/21202.127.0.0/21202.127.0.0/24202.127.1.0/24202.127.144.0/20202.127.144.0/23202.127.145.0/24202.127.146.0/24202.127.148.0/24202.127.151.0/24202.127.153.0/24202.127.155.0/24202.127.156.0/24202.127.157.0/24202.127.158.0/24202.127.16.0/20202.127.16.0/23202.127.19.0/24202.127.2.0/24202.127.20.0/24202.127.200.0/21202.127.21.0/24202.127.22.0/24202.127.23.0/24202.127.24.0/24202.127.26.0/24202.127.27.0/24202.127.29.0/24202.127.30.0/23202.127.4.0/24202.127.6.0/24202.38.128.0/23210.72.0.0/17210.72.12.0/24210.72.128.0/19210.72.128.0/24210.72.129.0/24210.72.13.0/24210.72.130.0/24210.72.132.0/24210.72.136.0/24210.72.137.0/24210.72.138.0/23210.72.140.0/23210.72.142.0/24210.72.144.0/23210.72.146.0/24210.72.147.0/24210.72.148.0/23210.72.15.0/24210.72.150.0/24210.72.152.0/23210.72.154.0/23210.72.156.0/23210.72.158.0/24210.72.159.0/24210.72.17.0/24210.72.18.0/24210.72.19.0/24210.72.20.0/24210.72.21.0/24210.72.22.0/24210.72.23.0/24210.72.24.0/24210.72.25.0/24210.72.26.0/23210.72.30.0/23210.72.32.0/20210.72.48.0/20210.72.64.0/23210.72.66.0/24210.72.67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2001:cc0::/322400:dd00::/282400:dd01:1001::/482400:dd01:1002::/482400:dd01:1003::/482400:dd01:1004::/482400:dd01:1005::/482400:dd01:1006::/482400:dd01:1007::/482400:dd01:1008::/482400:dd01:1009::/482400:dd01:100b::/482400:dd01:100c::/482400:dd01:100d::/482400:dd01:100e::/482400:dd01:100f::/482400:dd01:1011::/482400:dd01:1012::/482400:dd01:1013::/482400:dd01:1014::/482400:dd01:1015::/482400:dd01:1017::/482400:dd01:101a::/482400:dd01:101c::/482400:dd01:1020::/482400:dd01:1021::/482400:dd01:1023::/482400:dd01:1024::/482400:dd01:1025::/482400:dd01:1027::/482400:dd01:1029::/482400:dd01:102a::/482400:dd01:102b::/482400:dd01:102c::/482400:dd01:102d::/482400:dd01:102e::/482400:dd01:102f::/482400:dd01:1030::/482400:dd01:1031::/482400:dd01:1032::/482400:dd01:1033::/482400:dd01:1034::/482400:dd01:1035::/482400:dd01:1036::/482400:dd01:1037::/482400:dd01:1038::/482400:dd01:1039::/482400:dd01:103a::/482400:dd01:103b::/482400:dd01:103d::/482400:dd01:103e::/482400:dd01:103f::/482400:dd01:2000::/482400:dd01:2001::/482400:dd01:2002::/482400:dd01:2003::/482400:dd01:2005::/482400:dd01:2006::/482400:dd01:2007::/482400:dd01:2008::/482400:dd01:2009::/482400:dd01:200a::/482400:dd01:200b::/482400:dd01:200c::/482400:dd01:200d::/482400:dd01:200f::/482400:dd01:3001::/482400:dd01:3002::/482400:dd01:3004::/482400:dd01:3007::/482400:dd01:3008::/482400:dd01:3009::/482400:dd01:300a::/482400:dd01:300b::/482400:dd01:300c::/482400:dd01:300e::/482400:dd01:300f::/482400:dd01:3010::/482400:dd01:3011::/482400:dd01:3012::/482400:dd01:3013::/482400:dd01:3014::/482400:dd01:3018::/482400:dd01:301a::/482400:dd01:301b::/482400:dd01:3020::/482400:dd01:e001::/482400:dd02:1003::/482400:dd02:1004::/482400:dd02:1005::/482400:dd02:1006::/482400:dd02:1007::/482400:dd02:1008::/482400:dd02:1009::/482400:dd02:100a::/482400:dd02:100c::/482400:dd02:100d::/482400:dd02:100e::/482400:dd02:100f::/482400:dd02:1010::/482400:dd02:1011::/482400:dd02:1012::/482400:dd02:2000::/482400:dd02:2001::/482400:dd03:1000::/482400:dd03:1001::/482400:dd03:1002::/482400:dd03:1003::/482400:dd03:1004::/482400:dd03:1005::/482400:dd03:1006::/482400:dd03:1007::/482400:dd03:1008::/482400:dd03:100a::/482400:dd03:1fff::/482400:dd03:2000::/482400:dd03:fff::/482400:dd04:1000::/482400:dd04:1001::/482400:dd04:1002::/482400:dd04:1003::/482400:dd04:1004::/482400:dd04:1005::/482400:dd04:1006::/482400:dd04:1007::/482400:dd05:1000::/482400:dd05:1001::/482400:dd05:1002::/482400:dd05:1003::/482400:dd05:1004::/482400:dd05:1005::/482400:dd05:1006::/482400:dd06:1001::/482400:dd06:1002::/482400:dd06:1003::/482400:dd06:1004::/482400:dd06:1005::/482400:dd07:1000::/482400:dd07:1001::/482400:dd07:1002::/482400:dd07:1003::/482400:dd07:1004::/482400:dd07:1005::/482400:dd08:1001::/482400:dd08:1002::/482400:dd08:1003::/482400:dd08:1004::/482400:dd08:1006::/482400:dd09:1001::/482400:dd09:1002::/482400:dd09:1003::/482400:dd09:1004::/482400:dd09:1005::/482400:dd0a:1001::/482400:dd0a:1002::/482400:dd0a:1003::/482400:dd0a:1004::/482400:dd0a:1005::/482400:dd0a:1006::/482400:dd0b:1001::/482400:dd0b:1002::/482400:dd0b:1003::/482400:dd0b:1004::/482400:dd0b:1005::/482400:dd0d:1001::/482400:dd0d:1002::/482400:dd0d:2000::/482401:de00::/32
| AS3491 | PCCW Global (HK) Ltd. PCCWG-APAC-HK |
| AS4538 | China Education and Research Network Center ERX-CERNET-BKB |
| AS24151 | China Internet Network Infomation Center CNNIC-CRITICAL-AP |
| AS24409 | China Internet Network Infomation Center CNNIC-CRITICAL-AP |
| AS38345 | Internet Domain Name System Beijing Engineering Resrarch Center Ltd. ZDNS |
| AS63555 | Beijing Beilong Yunhai Network Data Technology Corporation CNBIDCC |
| AS1103 | SURF B.V. SURFNET-NL |
| AS2907 | Research Organization of Information and Systems, National Institute of Informatics SINET-AS |
| AS4635 | Hong Kong Internet Exchange--Route Server 1 HKIX-RS1 |
| AS4837 | CHINA UNICOM China169 Backbone CHINA169-Backbone |
| AS6939 | Hurricane Electric LLC HURRICANE |
| AS7575 | Australian Academic and Research Network (AARNet) AARNET-AS-AP |
| AS7660 | Asia Pacific Advanced Network - Japan APAN-JP |
| AS8359 | MTS PJSC MTS |
| AS9808 | China Mobile Communications Group Co., Ltd. CHINAMOBILE-CN |
| AS11537 | Internet2 INTERNET2-RESEARCH-EDU |
| AS20965 | GEANT Vereniging GEANT |
| AS23855 | Singapore Advanced Research and Education Network SINGAREN-GIX-AS-AP |
| AS23911 | China Next Generation Internet Beijing IX CNGI-BJIX-AS-AP |
| AS24482 | SG.GS SGGS-AS-AP |
| AS36236 | NetActuate, Inc NETACTUATE |
| AS49544 | i3D.net B.V i3Dnet |
Upstream graph
Upstreams and their upstreams, from BGP pathsNetwork health
Grade A · 90/100| pass | Prefixes covered by valid ROAs 632 of 632 announced prefixes are RPKI valid. |
25/25 |
| pass | No RPKI invalid announcements None of the announcements is RPKI invalid. |
10/10 |
| pass | Announces IPv6 168 IPv6 prefixes. |
15/15 |
| pass | More than one upstream 3 upstreams seen in BGP. |
10/10 |
| pass | Working abuse contact abuse-ip@cstnet.cn is published. |
15/15 |
| fail | Publishes a geofeed No geofeed found. Without one, location databases have to guess. |
0/10 |
| pass | No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger. |
10/10 |
| pass | Registry record maintained Last changed 2023-10-09. |
5/5 |
Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.
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<a href="https://ip-fd.net/asn/7497"><img src="https://ip-fd.net/badge/asn/7497/health.svg" alt="AS7497 network health on IP-FD.net"></a>
Markdown
[](https://ip-fd.net/asn/7497)
Use rpki.svg instead of health.svg for the RPKI badge.
Routing changes
Last 30 days| 2026-10-04 12:45 UTC | Relationship changed | AS9808 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS8359 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS7660 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS7575 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS6939 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS4837 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS4635 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS2907 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS23855 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS20965 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS11537 | upstream to peer |
| 2026-10-04 12:45 UTC | Relationship changed | AS1103 | upstream to peer |
WHOIS
aut-num: AS7497 as-name: CSTNET-AS-AP handle: AS7497 remarks: Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) registrant: ORG-CA107-AP (CNIC-CAS) <support@cnic.cn> technical,administrative:CNIC1-AP (Computer Network Information Center of Chinese Academy of Sciences administrator) <supervise@cnic.cn> abuse: IRT-CSTNET-CN (IRT-CSTNET-CN) <abuse-ip@cstnet.cn> registration: 2023-10-09T03:57:39Z last changed: 2023-10-09T04:01:57Z source: APNIC (RDAP)