AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) 🇨🇳 CN

CNIC-CAS. Announcing 637 prefixes, seen at the RIS collectors.

IPv4 prefixes

469

1,125,376 (4,396 × /24)

IPv6 prefixes

168

18 × /32

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS7497
Name: Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
Organisation: Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
Country: 🇨🇳 CN
RIR: APNIC
Allocated: 1997-04-08
Scope: Not Disclosed
Peering policy: Open
Website: http://cnic.cn
PeeringDB: net/41845

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

634 valid (99.5%) 0 invalid (0.0%) 3 no ROA (0.5%)

Upstreams

Networks seen providing transit to this one

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS174 Cogent Communications, LLC	🇺🇸 US	65,528	3,873	15,109	CAIDA
AS3491 PCCW Global (HK) Ltd.	🇭🇰 HK	51,866	525	5,821	CAIDA
AS7660 Asia Pacific Advanced Network - Japan	🇯🇵 JP	26,831	2	24	CAIDA
AS11537 Internet2	🇺🇸 US	26,667	23	3	CAIDA
AS23855 Singapore Advanced Research and Education Network	🇸🇬 SG	26,145	2	646	CAIDA
AS4134 China Telecom Backbone	🇨🇳 CN	20,544	2,250	692	CAIDA
AS4837 China Unicom Backbone	🇨🇳 CN	20,394	1,522	506	inferred
AS9808 China Mobile Backbone	🇨🇳 CN	260	14,186	1	CAIDA
AS23911 China Next Generation Internet Beijing IX	🇨🇳 CN	70	2	10	inferred
AS4635 HKIX Route Servers	🇭🇰 HK	0	0	876	inferred

Peers

Adjacencies that look settlement-free rather than transit

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS6939 Hurricane Electric LLC	🇺🇸 US	55,229	240	2,366	CAIDA
AS20965 GEANT Vereniging	🇳🇱 NL	25,925	2	43	CAIDA
AS8359 MTS PJSC	🇷🇺 RU	20,923	456	12	CAIDA
AS24482 SG.GS	🇸🇬 SG	20,417	45	438	CAIDA
AS7575 Australian Academic and Research Network (AARNet)	🇦🇺 AU	19,975	202	3	CAIDA
AS4538 China Education and Research Network Center	🇨🇳 CN	84	5,168	43	CAIDA
AS1103 SURF B.V.	🇳🇱 NL	30	99	468	CAIDA

Downstreams

Networks this one appears to provide transit to

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS24151 China Internet Network Infomation Center	🇨🇳 CN	9	52	780	CAIDA
AS38345 Internet Domain Name System Beijing Engineering Resrarch Center Ltd.	🇨🇳 CN	3	24	703	CAIDA
AS63555 Beijing Beilong Yunhai Network Data Technology Corporation	🇨🇳 CN	0	12	549	CAIDA
AS24409 China Internet Network Infomation Center	🇨🇳 CN	0	15	18	CAIDA

Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.