AS5739 - UCSC - University of California, Santa Cruz, US

United States
AS Number
AS5739
AS Name
UCSC
Org Name
University of California, Santa Cruz
Country / Region
United States
Registry

arin

RegDate

1986-03-05

Updated

2026-06-15

AS5739 Looking Glass
IPv4Prefixes

2

IPv6Prefixes

1

IPv4 NUMs

131,072

IPv6 NUMs(/64)

4,294,967,296

CIDR Description IP Num
128.114.0.0/16
IRR Valid
University of California, Santa Cruz 65536
169.233.0.0/16
IRR Valid
University of California, Santa Cruz 65536
CIDR Description IP NUMs(prefix /64)
2607:f5f0::/32
IRR Valid
University of California, Santa Cruz 4294967296
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS2152 CENIC-2152 - CENIC, US United States 2,011,904 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS2153 CENIC-2153 - CENIC, US United States 4,608 16,842,752 IPv4 IPv4 IPv6 IPv6
AS153 CTNOSC-ASN-153 - Headquarters, USAISC, US United States 256 16,908,288 IPv6 IPv6 
ASNumber:       5739
ASName:         UCSC
ASHandle:       AS5739
RegDate:        1995-09-13
Updated:        2011-06-29
Ref:            https://rdap.arin.net/registry/autnum/5739

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:        2026-06-15
OrgTechHandle   UCSCN-ARIN
OrgAbuseHandle  UCSCN1-ARIN
OrgNOCHandle    UCSCN-ARIN
OrgAdminHandle  UCSCN-ARIN
Source:         ARIN

OrgTechHandleHandle:  UCSCN-ARIN
OrgTechHandleName:    Network Operations Center, 
OrgTechHandlePhone:   +1-831-459-2714
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/UCSCN-ARIN

OrgAbuseHandleHandle:  UCSCN1-ARIN
OrgAbuseHandleName:    UCSC Security, 
OrgAbuseHandlePhone:   +1-831-459-2714
OrgAbuseHandleEmail:   [email protected]
OrgAbuseHandleRef:     https://rdap.arin.net/registry/entity/UCSCN1-ARIN

OrgNOCHandleHandle:  UCSCN-ARIN
OrgNOCHandleName:    Network Operations Center, 
OrgNOCHandlePhone:   +1-831-459-2714
OrgNOCHandleEmail:   [email protected]
OrgNOCHandleRef:     https://rdap.arin.net/registry/entity/UCSCN-ARIN

OrgAdminHandleHandle:  UCSCN-ARIN
OrgAdminHandleName:    Network Operations Center, 
OrgAdminHandlePhone:   +1-831-459-2714
OrgAdminHandleEmail:   [email protected]
OrgAdminHandleRef:     https://rdap.arin.net/registry/entity/UCSCN-ARIN

RTechHandleHandle:  UCSCN-ARIN
RTechHandleName:    Network Operations Center, 
RTechHandlePhone:   +1-831-459-2714
RTechHandleEmail:   [email protected]
RTechHandleRef:     https://rdap.arin.net/registry/entity/UCSCN-ARIN