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	Prefix	Description
	128.114.0.0/16	University of California, Santa Cruz
	169.233.0.0/16	University of California, Santa Cruz
	2607:f5f0::/32	University of California, Santa Cruz

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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	✔	✔
	AS2153	CENIC	✔	✔

ASHandle:       AS5739
OrgID:          UCSC
ASName:         UCSC
ASNumber:       5739
RegDate:        1995-09-13
Updated:        2011-06-29
TechHandle:     UCSCN-ARIN
Source:         ARIN



OrgID:          UCSC
OrgName:        University of California, Santa Cruz
CanAllocate:    
Street:         University of California, Santa Cruz
Street:         Information Technology Services
Street:         Communications Building
Street:         620 Baskin Circle
City:           Santa Cruz
State/Prov:     CA
Country:        US
PostalCode:     95064
RegDate:        1986-03-05
Updated:        2024-11-25
OrgAdminHandle: UCSCN-ARIN
OrgTechHandle:  UCSCN-ARIN
OrgAbuseHandle: UCSCN1-ARIN
OrgNOCHandle:   UCSCN-ARIN
Source:         ARIN





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


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


OrgAbuseHandle:       UCSCN1-ARIN
OrgAbuseName:          UCSC Security
# Email removed, Log into bgp.tools to see whois emails


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


TechHandle:           UCSCN-ARIN
TechName:              Network Operations Center
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2025-12-26T03:37:59Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-ucnet	11
RADB	as198949:as-sd	3765
RADB	as-calren2	288
LEVEL3	as-level3-origins-na	0
RADB	as174:as-cogc-023	48
RADB	as16631:as-cogc-010	73
RADB	as-hurricanev6	20179