AS55 University of Pennsylvania

UPENN

Company Website

IPv4 Addresses: 262,400

Number of Peers: 10

Number of Prefixes: 6

Traffic Estimation: 10-20Gbps

ASN
Prefixes
Peers
Upstreams
Downstreams
Graphs
World Map
Raw Whois

AS55 Summary

Regional Registry:

IANA

Allocation Status:

Assigned

Traffic Estimation:

10-20Gbps

Traffic Ratio:

Not Disclosed

Website:

https://www.upenn.edu

AS55 Network

IPv4 Prefixes:

5

IPv4 Peers:

6

IPv4 Upstreams:

3

IPv6 Prefixes:

1

IPv6 Peers:

4

IPv6 Upstreams:

3

Contacts

Email Contacts:

noc@isc.upenn.edu

obrienjw@upenn.edu

security@upenn.edu

Abuse Contacts:

security@upenn.edu

Address:

3401 Walnut Street,

Suite 221A,

Philadelphia,

PA,

19104-6228,

US

IPv4 Prefixes
IPv6 Prefixes

Country	Announced Prefix	Description	Valid ROA	Parent Prefix	RIR
	128.91.0.0/16	University of Pennsylvania		128.91.0.0/16	ARIN
	130.91.0.0/16	University of Pennsylvania		130.91.0.0/16	ARIN
	158.130.0.0/16	University of Pennsylvania		158.130.0.0/16	ARIN
	165.123.0.0/16	University of Pennsylvania		165.123.0.0/16	ARIN
	192.84.2.0/24	University of Pennsylvania		192.84.2.0/24	ARIN

Country	Announced Prefix	Description	Valid ROA	Parent Prefix	RIR
	2607:f470::/32	University of Pennsylvania		2607:f470::/32	ARIN

IPv4 Peers
IPv6 Peers

Country	ASN	Name	Description	IPv6
	AS174	COGENT-174	Cogent Communications
	AS3356	LEVEL3	Level 3 Parent, LLC
	AS11537	INTERNET2-RESEARCH-EDU	Internet2
	AS11164	INTERNET2-I2PX	Internet2
	AS46274	UPHS	Penn Medicine
	AS69	UPENN-NETWORK-LAB	University of Pennsylvania

Country	ASN	Name	Description	IPv4
	AS11164	INTERNET2-I2PX	Internet2
	AS174	COGENT-174	Cogent Communications
	AS11537	INTERNET2-RESEARCH-EDU	Internet2
	AS3356	LEVEL3	Level 3 Parent, LLC

IPv4 Upstreams
IPv6 Upstreams

Country	ASN	Name	Description	IPv6
	AS3356	LEVEL3	Level 3 Parent, LLC
	AS11164	INTERNET2-I2PX	Internet2
	AS174	COGENT-174	Cogent Communications

IPv4 Upstream Graph

Country	ASN	Name	Description	IPv4
	AS3356	LEVEL3	Level 3 Parent, LLC
	AS11164	INTERNET2-I2PX	Internet2
	AS174	COGENT-174	Cogent Communications

IPv6 Upstream Graph

IPv4 Downstreams

Country	ASN	Name	Description
	AS69	UPENN-NETWORK-LAB	University of Pennsylvania
	AS46274	UPHS	Penn Medicine

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber:       55
ASName:         UPENN
ASHandle:       AS55
RegDate:        1985-12-18
Updated:        2021-10-14
Comment:        https://www.upenn.edu/
Comment:        Main AS number for PennNet of the University of Pennsylvania    
Ref:            https://rdap.arin.net/registry/autnum/55


OrgName:        University of Pennsylvania
OrgId:          UNIVER-8-Z
Address:        3401 Walnut Street
Address:        Suite 221A
City:           Philadelphia
StateProv:      PA
PostalCode:     19104-6228
Country:        US
RegDate:        2010-01-05
Updated:        2022-08-03
Ref:            https://rdap.arin.net/registry/entity/UNIVER-8-Z


OrgNOCHandle: UNIVE-ARIN
OrgNOCName:   University of Pennsylvania
OrgNOCPhone:  +1-215-573-9631 
OrgNOCEmail:  noc@isc.upenn.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/UNIVE-ARIN

OrgTechHandle: OBRIE72-ARIN
OrgTechName:   O'Brien, John 
OrgTechPhone:  +1-215-898-9818 
OrgTechEmail:  obrienjw@upenn.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/OBRIE72-ARIN

OrgAbuseHandle: ISO-ARIN
OrgAbuseName:   Information Security Officer
OrgAbusePhone:  +1-215-898-2172 
OrgAbuseEmail:  security@upenn.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ISO-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#

Country	IX	Name	IPv4	IPv6	Port Speed