AS4538 China Education and Research Network Center 🇨🇳 CN

Announcing 5,178 prefixes, seen at the RIS collectors.

IPv4 prefixes

5,168

43,086,592 (168,307 × /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

1,460 valid (28.2%) 1 invalid (0.0%) 3,717 no ROA (71.8%)

Upstreams

Networks seen providing transit to this one

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS1299 Arelion (fka. Telia Carrier)	🇸🇪 SE	70,140	109	755	CAIDA
AS174 Cogent Communications, LLC	🇺🇸 US	67,532	3,894	786	CAIDA
AS6453 TATA Communications (America) Inc	🇺🇸 US	59,472	126	2,378	CAIDA
AS2914 NTT America, Inc.	🇺🇸 US	59,137	1,723	602	CAIDA
AS6939 Hurricane Electric LLC	🇺🇸 US	57,026	241	3,035	CAIDA
AS3491 PCCW Global (HK) Ltd.	🇭🇰 HK	53,093	527	248	CAIDA
AS23764 China Telecom Global	🇭🇰 HK	49,307	181	27,775	CAIDA
AS58453 China Mobile International	🇭🇰 HK	30,886	67	512	CAIDA
AS4134 China Telecom Backbone	🇨🇳 CN	29,067	2,250	11,845	CAIDA
AS4837 China Unicom Backbone	🇨🇳 CN	28,901	1,522	1,832	CAIDA
AS140570 Hong Kong Beecloud System Technology Services Limited	🇭🇰 HK	7,964	19	559	CAIDA
AS9808 China Mobile Backbone	🇨🇳 CN	255	14,203	1	CAIDA
AS4635 HKIX Route Servers	🇭🇰 HK	0	0	1,524	inferred
AS23910 China Next Generation Internet CERNET2	🇨🇳 CN	0	0	1,443	inferred

Peers

Adjacencies that look settlement-free rather than transit

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS7660 Asia Pacific Advanced Network - Japan	🇯🇵 JP	25,502	2	5	CAIDA
AS23855 Singapore Advanced Research and Education Network	🇸🇬 SG	24,789	2	1	CAIDA
AS8359 MTS PJSC	🇷🇺 RU	24,698	456	112	CAIDA
AS20965 GEANT Vereniging	🇳🇱 NL	24,561	2	167	CAIDA
AS24482 SG.GS	🇸🇬 SG	24,037	45	302	CAIDA
AS9930 TIME dotCom Bhd	🇲🇾 MY	21,730	76	77	CAIDA
AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	🇨🇳 CN	9	470	43	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
AS24353 CERNET2 IX at Xi'an Jiaotong University	🇨🇳 CN	0	1	2	CAIDA
AS24352 CERNET2 IX at Tianjin University	🇨🇳 CN	0	1	2	CAIDA
AS24371 CERNET2 IX at Jilin 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	70	2	206	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	126	CAIDA
AS133111 CERNET New Technology Co., Ltd	🇨🇳 CN	0	8	125	CAIDA
AS9405 Test platform Service Center	🇨🇳 CN	0	3	123	CAIDA
AS151229 Shenyang Aerospace University	🇨🇳 CN	0	5	61	CAIDA
AS24310 Net-Glyph Data Center	🇨🇳 CN	0	1	44	CAIDA
AS134169 CERNEWTECH (Beijing) co.,LTD	🇨🇳 CN	0	2	44	CAIDA
AS133465 Duke Kunshan University	🇨🇳 CN	0	2	19	CAIDA
AS131578 Beijing Foreign Studies University	🇨🇳 CN	0	1	6	CAIDA
AS138441 CERNET2 regional IX at Xinjiang University	🇨🇳 CN	0	0	1	inferred
AS133475 New York University ASN	🇨🇳 CN	0	3	1	CAIDA
AS24368 CERNET2 IX at Xiamen University	🇨🇳 CN	0	1	1	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.