AS55 - UPENN - University of Pennsylvania, US

United States
AS Number
AS55
AS Name
UPENN
Org Name
University of Pennsylvania
Country / Region
United States
Registry

arin

RegDate

2010-01-05

Updated

2026-08-17

AS55 Looking Glass
IPv4Prefixes

5

IPv6Prefixes

1

IPv4 NUMs

262,400

IPv6 NUMs(/64)

4,294,967,296

CIDR Description IP Num
128.91.0.0/16
IRR Valid
University of Pennsylvania 65536
130.91.0.0/16
IRR Valid
University of Pennsylvania 65536
158.130.0.0/16
IRR Valid
University of Pennsylvania 65536
165.123.0.0/16
IRR Valid
University of Pennsylvania 65536
192.84.2.0/24
IRR Valid
University of Pennsylvania 256
CIDR Description IP NUMs(prefix /64)
2607:f470::/32
IRR Valid
University of Pennsylvania 4294967296
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS174 COGENT-174 - Cogent Communications, LLC, US United States 36,233,472 215,834,689,537 IPv4 IPv4 IPv6 IPv6
AS3356 LEVEL3 - Level 3 Parent, LLC, US United States 28,864,512 81,626,398,720 IPv4 IPv4 IPv6 IPv6
AS11164 INTERNET2-I2PX - Internet2, US United States 2,048 17,170,432 IPv4 IPv4 IPv6 IPv6
AS11537 INTERNET2-RESEARCH-EDU - Internet2, US United States 9,984 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS69 UPENN-NETWORK-LAB - University of Pennsylvania, US United States 256 0 IPv4 IPv4
AS46274 UPHS - Penn Medicine, US United States 512 0 IPv4 IPv4 
ASNumber:       55
ASName:         UPENN
ASHandle:       AS55
RegDate:        1985-12-18
Updated:        2021-10-14
Ref:            https://rdap.arin.net/registry/autnum/55

OrgID:          UNIVER-8-Z
OrgName:        University of Pennsylvania
CanAllocate:    
Street:         3401 Walnut Street
Street:         Suite 221A
City:           Philadelphia
State/Prov:     PA
Country:        US
PostalCode:     19104-6228
RegDate:        2010-01-05
Updated:        2026-08-17
OrgTechHandle   OBRIE72-ARIN
OrgAbuseHandle  ISO-ARIN
OrgNOCHandle    UNIVE-ARIN
OrgAdminHandle  UNIVE-ARIN
Source:         ARIN

OrgAdminHandleHandle:  UNIVE-ARIN
OrgAdminHandleName:    University of Pennsylvania, 
OrgAdminHandlePhone:   +1-215-573-9631
OrgAdminHandleEmail:   [email protected]
OrgAdminHandleRef:     https://rdap.arin.net/registry/entity/UNIVE-ARIN

OrgTechHandleHandle:  OBRIE72-ARIN
OrgTechHandleName:    O'Brien, John
OrgTechHandlePhone:   +1-215-898-9818
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/OBRIE72-ARIN

OrgAbuseHandleHandle:  ISO-ARIN
OrgAbuseHandleName:    Information Security Officer, 
OrgAbuseHandlePhone:   +1-215-898-2172
OrgAbuseHandleEmail:   [email protected]
OrgAbuseHandleRef:     https://rdap.arin.net/registry/entity/ISO-ARIN

OrgNOCHandleHandle:  UNIVE-ARIN
OrgNOCHandleName:    University of Pennsylvania, 
OrgNOCHandlePhone:   +1-215-573-9631
OrgNOCHandleEmail:   [email protected]
OrgNOCHandleRef:     https://rdap.arin.net/registry/entity/UNIVE-ARIN