IP range details

128.91.0.0/16

AS55 · University of Pennsylvania

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Summary

Country	United States
Domain	upenn.edu
ASN	AS55
Registry	arin
Hosted IPs	65,536
ID	UPENN

WHOIS Details

NetHandle:      NET-128-91-0-0-1
OrgID:          UNIVER-8-Z
Parent:         NET-128-0-0-0-0
NetName:        UPENN
NetRange:       128.91.0.0 - 128.91.255.255
NetType:        allocation
OriginAS:       55
RegDate:        1985-09-18
Updated:        2021-12-14
Source:         ARIN


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:        2022-08-03
OrgAdminHandle: UNIVE-ARIN
OrgTechHandle:  OBRIE72-ARIN
OrgAbuseHandle: ISO-ARIN
OrgNOCHandle:   UNIVE-ARIN
Source:         ARIN


POCHandle:      OBRIE72-ARIN
IsRole:         N
LastName:       O'Brien
FirstName:      John
Street:         3401 Walnut St
City:           Philadelphia
State/Prov:     PA
Country:        US
PostalCode:     19104
RegDate:        2014-06-17
Updated:        2024-03-27
OfficePhone:    +1-215-898-9818
Mailbox:        obrienjw@upenn.edu
Source:         ARIN


POCHandle:      ISO-ARIN
IsRole:         Y
LastName:       Information Security Officer
FirstName:      
Street:         3401 Walnut Street
Street:         Rm C226
City:           Philadelphia
State/Prov:     PA
Country:        US
PostalCode:     19104-6228
RegDate:        2002-12-11
Updated:        2024-05-30
OfficePhone:    +1-215-898-2172
FaxPhone:       +1-215-573-2037
Mailbox:        security@upenn.edu
Source:         ARIN


POCHandle:      UNIVE-ARIN
IsRole:         Y
LastName:       University of Pennsylvania
FirstName:      
Street:         3401 Walnut Street
Street:         Suite 221A
City:           Philadelphia
State/Prov:     PA
Country:        US
PostalCode:     19104-6228
RegDate:        2002-12-10
Updated:        2024-08-26
OfficePhone:    +1-215-573-9631
Mailbox:        noc@isc.upenn.edu
Source:         ARIN

Hosted domains

There are 95 domain names hosted across 32 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
128.91.205.1	lakadamyali.org	22
128.91.205.39	pvcld3study.org	10
128.91.204.164	chronicrenalinsufficiencycohortstudy.org	7
128.91.205.29	pennttm.com	6
128.91.58.202	cnlab.info	6
128.91.15.225	pennvetphd.org	5
128.91.58.234	casbsxchange.com	5
128.91.252.43	pluralofvinyls.com	4
128.91.204.214	steptogetherstudy.org	3
128.91.15.203	cbarq.org	3
128.91.45.163	ashmanskas.net	2
128.91.90.85	wharton-asian.com	2
128.91.228.177	wwbp.org	2
128.91.58.142	friendlyisland.info	1
128.91.58.198	viscomlab.com	1
128.91.89.221	whenthingsgowrong.com	1
128.91.228.168	textanalyzer.org	1
128.91.43.191	beerday.org	1
128.91.136.144	wxpn.biz	1
128.91.107.7	pharmacyleaders.net	1

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What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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