128.91.0.0/16
AS55 · University of Pennsylvania
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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: ISO-ARIN IsRole: Y LastName: Information Security Officer FirstName: Street: 3401 Walnut Street Street: Suite 232A City: Philadelphia State/Prov: PA Country: US PostalCode: 19104-6228 RegDate: 2002-12-11 Updated: 2022-02-24 OfficePhone: +1-215-898-2172 FaxPhone: +1-215-573-2037 Mailbox: security@upenn.edu 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: 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: 2023-08-27 OfficePhone: +1-215-573-9631 Mailbox: noc@isc.upenn.edu Source: ARIN
Hosted domains
There are 99 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 | jonathanminer.info | 22 |
| 128.91.205.39 | pvcld3study.org | 11 |
| 128.91.58.202 | globalnetpolicy.com | 9 |
| 128.91.204.164 | chronic-renal-insufficiency-cohort.org | 7 |
| 128.91.205.29 | irnacosi.org | 6 |
| 128.91.15.225 | caninebpi.com | 5 |
| 128.91.58.234 | pennxchange.com | 5 |
| 128.91.252.43 | languagelog.com | 4 |
| 128.91.15.203 | cbarq.com | 3 |
| 128.91.204.214 | steptogetherstudy.org | 3 |
| 128.91.228.177 | wwbp.org | 2 |
| 128.91.90.85 | wharton-asian.com | 2 |
| 128.91.45.163 | ashmanskas.com | 2 |
| 128.91.35.13 | mypenndentist.com | 1 |
| 128.91.107.7 | pharmacyleaders.net | 1 |
| 128.91.43.191 | beerday.org | 1 |
| 128.91.204.194 | scap-t.org | 1 |
| 128.91.228.168 | textanalyzer.org | 1 |
| 128.91.252.143 | language-archives.org | 1 |
| 128.91.58.198 | viscomlab.com | 1 |
Hosted domains API
IP address subranges within this IP range
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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.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.
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