AS2153 CENIC 🇺🇸 US

Announcing 13 prefixes, seen at the RIS collectors.

IPv4 prefixes

3,328 (13 × /24)

IPv6 prefixes

257 × /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: AS2153
Name: CENIC
Organisation: CENIC / CalREN AS2153
Country: 🇺🇸 US
RIR: ARIN
Allocated: 2024-07-08
Network type: Educational/Research
Scope: Regional
Peering policy: Selective
IRR as-set: AS-CALRENHPR
Website: https://cenic.org
PeeringDB: net/14184
Exchanges: 1

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

8 valid (61.5%) 0 invalid (0.0%) 5 no ROA (38.5%)

Upstreams

Networks seen providing transit to this one

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS11537 Internet2	🇺🇸 US	2,204	23	2,241	CAIDA
AS7575 Australian Academic and Research Network (AARNet)	🇦🇺 AU	567	202	2,766	CAIDA

Peers

Adjacencies that look settlement-free rather than transit

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS2907 Science Information Network	🇯🇵 JP	2,665	605	10	CAIDA
AS2152 CENIC - CalREN	🇺🇸 US	174	734	4,454	CAIDA
AS24 National Aeronautics and Space Administration	🇺🇸 US	2	1	2	CAIDA
AS16 Lawrence Berkeley National Laboratory	🇺🇸 US	0	2	2	CAIDA

Downstreams

Networks this one appears to provide transit to

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS567 Los Nettos	🇺🇸 US	16	1	123	CAIDA
AS40498 New Mexico Lambda Rail, Inc.	🇺🇸 US	8	12	25	CAIDA
AS195 San Diego Supercomputer Center	🇺🇸 US	6	31	143	CAIDA
AS6192 University of California, Davis	🇺🇸 US	2	6	86	CAIDA
AS7377 University of California, San Diego	🇺🇸 US	2	18	49	CAIDA
AS6106 University of California, Riverside	🇺🇸 US	2	4	5	CAIDA
AS52 University of California, Los Angeles	🇺🇸 US	0	10	31	CAIDA
AS46985 The Regents of the University of California - University of California, San Diego.	🇺🇸 US	0	8	28	CAIDA
AS31 California Institute of Technology	🇺🇸 US	0	12	16	CAIDA
AS299 University of California, Irvine	🇺🇸 US	0	5	16	CAIDA
AS131 University of California, Santa Barbara	🇺🇸 US	0	5	15	CAIDA
AS5653 University of California San Francisco	🇺🇸 US	0	17	12	CAIDA
AS26397 The Regents of the University of California - University of California, San Diego.	🇺🇸 US	0	4	12	CAIDA
AS5739 University of California, Santa Cruz	🇺🇸 US	0	2	7	CAIDA
AS32 Stanford University	🇺🇸 US	0	3	7	CAIDA
AS257 Navy Network Information Center (NNIC)	🇺🇸 US	0	2	6	CAIDA
AS396310 San Diego State University	🇺🇸 US	0	2	6	CAIDA
AS32361 UltraLight	🇺🇸 US	0	4	4	CAIDA
AS396465 California State University, Sacramento	🇺🇸 US	0	8	3	CAIDA
AS2037 California State University at Fresno	🇺🇸 US	0	2	3	CAIDA
AS7960 California Polytechnic State University	🇺🇸 US	0	23	3	CAIDA
AS22323 University of California, Merced	🇺🇸 US	0	2	3	CAIDA
AS26488 Santa Clara University	🇺🇸 US	0	2	3	CAIDA
AS9 Carnegie Mellon University	🇺🇸 US	0	9	3	CAIDA
AS46357 California Polytechnic State University	🇺🇸 US	0	1	2	CAIDA
AS47 University of Southern California	🇺🇸 US	0	17	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.