Autonomous system
AS53577 URSINUS - Ursinus College
Unclassified ARIN
Summary
Ursinus College
education business us
URSIN is held by Ursinus College, a private liberal arts institution in Collegeville, Pennsylvania.
What it's used for
- The address space is primarily leased from NTT America, Inc. (netnames
NTTA-198-138,NTTA-192-204) and Cogent Communications, LLC (netnameCOGENT-A), with one block (198.17.40.0/24) registered directly to Ursinus College. - The AS announces 3,584 IPv4 addresses across 8 prefixes and maintains 2 observed neighbours, a ratio consistent with a small institutional network rather than a transit provider.
- Traffic from this AS represents the campus network of a private college, carrying student, faculty, and administrative endpoints.
Notable
- Registrants for the majority of prefixes are NTT America, Inc. and Cogent Communications, LLC, while the AS holder is Ursinus College, indicating the use of leased address space.
- The inventory consists of 8 IPv4 prefixes with no IPv6 prefixes in inventory.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 3.58K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 8 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS53577- Registry name
- URSINUS
- Registrant
- Ursinus College
- Abuse contact
- jshuttlesworth@ursinus.edu
- Registered
- 2010-06-21
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 80% valid · 8 valid, 2 with no ROA
- ROAs
- 8 authorising AS53577
- ASPA
- no ASPA record
- IRR
- 70% registered · 7 of 10 announcements
- Route objects
- 7 naming AS53577
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 449 networks and 1,846 prefixes, as published 2026-11-02. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere