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	Prefix	Description
	44.0.0.0/9	Bottom two thirds of ARDC address space
	44.128.0.0/10	Reserved for testing
	69.166.11.0/24	RGnet, LLC
	69.196.32.0/20	The Regents of the University of California - Univers...
	69.196.32.0/19	The Regents of the University of California - Univers...
	69.196.40.0/24	The Regents of the University of California - Univers...
	128.54.0.0/16	University of California, San Diego
	132.239.0.0/16	University of California, San Diego
	137.110.0.0/16	University of California, San Diego
	169.228.0.0/16	University of California, San Diego
	192.135.237.0/24	Marine Physical Lab/UCSD
	192.135.238.0/24	Marine Physical Lab/UCSD
	192.154.1.0/24	University of California at San Diego
	198.134.135.0/24	University of California, San Diego
	207.34.0.0/24	RGnet, LLC
	216.21.14.0/24	RGnet, LLC
	216.151.34.0/24	RGnet, LLC
	216.151.38.0/24	RGnet, LLC
	2001:48d0:c000::/34	San Diego Supercomputer Center
	2607:f720::/32	University of California, San Diego

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2152	CENIC - CalREN	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS2152	CENIC - CalREN	✔	✔
	AS26397	The Regents of the University of California - Univers...	✔	✘
	AS2153	CENIC	✔	✔

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Downstreams

	ASN	Description	IPv4	IPv6
	AS26397	The Regents of the University of California - Univers...	✔	✘

ASHandle:       AS7377
OrgID:          UCSD-1-Z
ASName:         UCSD
ASNumber:       7377
RegDate:        1996-11-25
Updated:        2023-12-19
Source:         ARIN



OrgID:          UCSD-1-Z
OrgName:        University of California, San Diego
CanAllocate:    
Street:         IT Services
Street:         9500 Gilman Dr, #0903
Street:         Attn: Hostmaster
City:           La Jolla
State/Prov:     CA
Country:        US
PostalCode:     92093-0903
RegDate:        2023-08-23
Updated:        2023-08-23
OrgAdminHandle: NOC1807-ARIN
OrgTechHandle:  NOC1807-ARIN
OrgTechHandle:  UTC1-ARIN
OrgAbuseHandle: UCSDA-ARIN
OrgNOCHandle:   NOC1807-ARIN
Source:         ARIN





OrgAdminHandle:       NOC1807-ARIN
OrgAdminName:          Network Operations Center
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        NOC1807-ARIN
OrgTechName:           Network Operations Center
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        UTC1-ARIN
OrgTechName:           UCSD Technical Contact
# Email removed, Log into bgp.tools to see whois emails


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


OrgNOCHandle:         NOC1807-ARIN
OrgNOCName:            Network Operations Center
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-09T03:25:56Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-cci-tx-cust	55
RADB	as37271:as-test-cf	93
RADB	as-thix	986
RADB	as174:as-cogc-024	50
RADB	as-btn-customers	1495
RADB	as-calren2	289
RADB	as198949:as-sd	3417
RADB	as-nwn-transit	2073
RADB	as-ucnet	11
RADB	as-ctbc-customers156	50
LEVEL3	as-level3-origins-na	0
RADB	as-hurricanev6	20349
RIPE	as-gmbnetset	6