AS4538 China Education and Research Network Center 🇨🇳 CN

Announcing 5,171 prefixes, seen at the RIS collectors.

IPv4 prefixes

5,161

42,965,248 (167,833 × /24)

IPv6 prefixes

265 × /48

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS4538
Name: China Education and Research Network Center
Organisation: CERNET-CN
Country: 🇨🇳 CN
RIR: APNIC
Allocated: 2002-08-01
Network type: Educational/Research
Scope: Not Disclosed
Peering policy: Open
Website: http://www.edu.cn
PeeringDB: net/13851

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

1,459 valid (28.2%) 2 invalid (0.0%) 3,710 no ROA (71.7%)

Upstreams

Networks seen providing transit to this one

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS1299 Arelion (fka. Telia Carrier)	🇸🇪 SE	68,272	134	814	CAIDA
AS174 Cogent Communications, LLC	🇺🇸 US	65,575	3,986	755	CAIDA
AS6453 TATA Communications (America) Inc	🇺🇸 US	55,917	123	2,223	CAIDA
AS2914 NTT America, Inc.	🇺🇸 US	54,730	1,574	492	CAIDA
AS6939 Hurricane Electric LLC	🇺🇸 US	52,797	185	3,068	CAIDA
AS3491 PCCW Global (HK) Ltd.	🇭🇰 HK	50,414	532	80	CAIDA
AS23764 China Telecom Global	🇭🇰 HK	43,011	184	26,472	CAIDA
AS58453 China Mobile International	🇭🇰 HK	23,285	76	1,167	CAIDA
AS4134 China Telecom Backbone	🇨🇳 CN	8,401	2,229	11,284	CAIDA
AS140570 Hong Kong Beecloud System Technology Services Limited	🇭🇰 HK	4,074	19	467	CAIDA
AS20965 GEANT Vereniging	🇳🇱 NL	909	2	164	inferred
AS9808 China Mobile Backbone	🇨🇳 CN	263	14,264	2	CAIDA
AS4635 HKIX Route Servers	🇭🇰 HK	0	0	1,442	inferred
AS23910 China Next Generation Internet CERNET2	🇨🇳 CN	0	0	904	inferred

Peers

Adjacencies that look settlement-free rather than transit

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS9930 TIME dotCom Bhd	🇲🇾 MY	21,675	75	82	CAIDA
AS4837 China Unicom Backbone	🇨🇳 CN	8,203	1,518	1,836	CAIDA
AS8359 MTS PJSC	🇷🇺 RU	5,708	441	97	CAIDA
AS24482 SG.GS	🇸🇬 SG	4,980	45	301	CAIDA
AS7660 Asia Pacific Advanced Network - Japan	🇯🇵 JP	2,556	2	5	CAIDA
AS23855 Singapore Advanced Research and Education Network	🇸🇬 SG	1,379	2	1	CAIDA
AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	🇨🇳 CN	14	467	40	CAIDA
AS24364 CERNET2 IX at Shanghai Jiaotong University	🇨🇳 CN	0	11	17	CAIDA
AS24357 CERNET2 IX at South China University of Technology	🇨🇳 CN	0	13	14	CAIDA
AS24349 CERNET2 IX at Peking University	🇨🇳 CN	0	4	6	CAIDA
AS24358 CERNET2 IX at Huazhong University of Science and Technology	🇨🇳 CN	0	4	4	CAIDA
AS24371 CERNET2 IX at Jilin University	🇨🇳 CN	0	1	2	CAIDA
AS24353 CERNET2 IX at Xi'an Jiaotong University	🇨🇳 CN	0	1	2	CAIDA
AS24352 CERNET2 IX at Tianjin University	🇨🇳 CN	0	1	2	CAIDA

Downstreams

Networks this one appears to provide transit to

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS23911 China Next Generation Internet Beijing IX	🇨🇳 CN	75	2	205	CAIDA
AS24348 CERNET2 IX at Tsinghua University	🇨🇳 CN	3	10	90	CAIDA
AS24361 CERNET2 IX at Southeast University	🇨🇳 CN	2	2	69	CAIDA
AS24369 CERNET2 IX at Northeast University	🇨🇳 CN	2	2	3	CAIDA
AS139139 Shenyang Agricultural University	🇨🇳 CN	0	3	123	CAIDA
AS133111 CERNET New Technology Co., Ltd	🇨🇳 CN	0	8	123	CAIDA
AS9405 Test platform Service Center	🇨🇳 CN	0	3	119	CAIDA
AS151229 Shenyang Aerospace University	🇨🇳 CN	0	5	57	CAIDA
AS24310 Net-Glyph Data Center	🇨🇳 CN	0	1	45	CAIDA
AS133465 Duke Kunshan University	🇨🇳 CN	0	2	19	CAIDA
AS131578 Beijing Foreign Studies University	🇨🇳 CN	0	1	9	CAIDA
AS134169 CERNEWTECH (Beijing) co.,LTD	🇨🇳 CN	0	1	4	CAIDA
AS138441 CERNET2 regional IX at Xinjiang University	🇨🇳 CN	0	0	1	inferred

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.