University of Pennsylvania
AS55 is University of Pennsylvania (upenn.edu). It announces 261,888 IPv4 addresses in 5 prefixes, and 1 IPv6 prefixes.
United States· ARIN· allocated 1985-12-18· education
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United States261,888 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- UPENN
- name
- University of Pennsylvania
- org
- UNIVER-8-Z
- org name
- University of Pennsylvania
- org address
- 3401 Walnut Street, Suite 221A, Philadelphia, PA, 19104-6228
- org city
- Philadelphia
- org country
- US
- country
- US
- source
- arin
- created
- 1985-12-18
- updated
- 2021-10-14
- remarks
- https://www.upenn.edu/ / Main AS number for PennNet of the University of Pennsylvania
- abuse name
- Information Security Officer
- abuse email
- security@upenn.edu
- abuse phone
- +1-215-898-2172
- abuse kind
- role
- abuse city
- Philadelphia
- abuse country
- US
- admin name
- University of Pennsylvania
- admin email
- noc@isc.upenn.edu
- admin phone
- +1-215-573-9631
- admin kind
- role
- admin city
- Philadelphia
- admin country
- US
- tech name
- John O'Brien
- tech email
- obrienjw@upenn.edu
- tech phone
- +1-215-898-9818
- tech kind
- person
- tech city
- Philadelphia
- tech country
- US
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- VPN IP170.01%
- geonode, anyip, geonix0.12%
- None here
- None here
- None here
- None here
- Hosting IP4,3521.66%
- None here
- None here
- None here
- SSH IP3350.13%
- SMTP IP100.00%
- 0.01%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 128.91.0.0/16 | United States | valid | 19 | 2026-10-02 |
| 130.91.0.0/16 | United States | valid | 19 | 2026-10-02 |
| 158.130.0.0/16 | United States | valid | 19 | 2026-10-02 |
| 165.123.0.0/16 | United States | valid | 19 | 2026-10-02 |
| 192.84.2.0/24 | United States | valid | 19 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2607:f470::/32 | United States | valid | 20 | 2026-10-02 |
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