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	Prefix	Description

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2152	CENIC - CalREN	✘	✔
	AS195	San Diego Supercomputer Center	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS2152	CENIC - CalREN	✔	✔
	AS11537	Internet2	✔	✔
	AS2907	Science Information Network	✔	✔
	AS6509	CANARIE Inc	✔	✔
	AS7575	Australian Academic and Research Network (AARNet)	✔	✔
	AS6192	University of California, Davis	✔	✔
	AS7539	National Center for High-performance Computing	✔	✔
	AS17579	KISTI	✔	✔
	AS195	San Diego Supercomputer Center	✔	✔
	AS293	ESnet	✔	✔
	AS101	University of Washington	✔	✔
	AS668	DoD High Performance Computing (Defense Research and Engineering Network)	✔	✔
	AS46985	The Regents of the University of California - Univers...	✔	✘
	AS11096	FloridaNet	✔	✔
	AS38022	REANNZ National Research and Education Network	✔	✔
	AS7377	University of California, San Diego	✔	✔
	AS40498	New Mexico Lambda Rail, Inc.	✔	✘
	AS14041	University Corporation for Atmospheric Research	✔	✔
	AS52	University of California, Los Angeles	✔	✔
	AS26397	The Regents of the University of California - Univers...	✔	✘
	AS31	California Institute of Technology	✔	✔
	AS299	University of California, Irvine	✔	✔
	AS131	University of California, Santa Barbara	✔	✘
	AS5653	University of California San Francisco	✔	✘
	AS32361	UltraLight	✔	✔
	AS6106	University of California, Riverside	✔	✔
	AS24	National Aeronautics and Space Administration	✔	✔
	AS32	Stanford University	✔	✔
	AS5739	University of California, Santa Cruz	✔	✔
	AS257	Navy Network Information Center (NNIC)	✔	✘
	AS396310	San Diego State University	✔	✘
	AS8075	Microsoft Corporation	✔	✘
	AS6360	University of Hawaii	✔	✔
	AS46357	California Polytechnic State University	✔	✔
	AS22323	University of California, Merced	✔	✘
	AS9	Carnegie Mellon University	✔	✘
	AS396465	California State University, Sacramento	✔	✘
	AS47	University of Southern California	✔	✘
	AS16	Lawrence Berkeley National Laboratory	✔	✔
	AS567	Los Nettos	✔	✔
	AS28569	AS28569	✔	✔

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Downstreams

	ASN	Description	IPv4	IPv6
	AS6192	University of California, Davis	✘	✔
	AS46985	The Regents of the University of California - Univers...	✔	✘

ASHandle:       AS2153
OrgID:          CENIC
ASName:         CENIC-2153
ASNumber:       2153
RegDate:        2024-07-08
Updated:        2024-07-08
Source:         ARIN



OrgID:          CENIC
OrgName:        CENIC
CanAllocate:    
Street:         5757 Plaza Drive, Suite 205
City:           Cypress
State/Prov:     CA
Country:        US
PostalCode:     90630-5029
RegDate:        1998-08-18
Updated:        2024-11-25
OrgAdminHandle: DOMAI64-ARIN
OrgTechHandle:  OPERA63-ARIN
OrgAbuseHandle: ABUSE711-ARIN
Source:         ARIN





OrgAdminHandle:       DOMAI64-ARIN
OrgAdminName:          Admin Domain
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        OPERA63-ARIN
OrgTechName:           Admin Domain
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ABUSE711-ARIN
OrgAbuseName:          CENIC Abuse
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-09T03:27:21Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-calren2	289
RADB	as174:as-cogc-011	47
RADB	as7575:as-research	36
ARIN	as293:as-from-singaren-to-esnet	4548