Autonomous system
AS10554 WESTERNU-POMONA
Education ARIN
Summary
Western University of Health Sciences
education university legacy
The campus ASN of Western University of Health Sciences, a graduate health-professions university in Pomona, California. The handle WESTERNU-POMONA names both the institution and the city, which is unusually helpful.
What it's used for
A single-institution campus network. RIS sees 4 announced IPv4 prefixes carrying 1,024 addresses — 204.9.172.0/24 through 204.9.175.0/24, four /24s that together make a /22 — no IPv6, and three observed neighbours.
Three neighbours is a slightly richer connectivity picture than most small campuses show, and it is what you would expect from a university that wants its network to survive a provider outage: it is buying transit from more than one source rather than peering as a carrier. Nothing in the routing suggests any wholesale role. The addresses exist to serve the university's own students, faculty, clinics and administration.
Notable
Read the name carefully. "Western University" alone would be ambiguous, and there are unrelated institutions with similar names in other countries. This one is the Pomona health-sciences university, a private graduate school training osteopathic physicians, dentists, pharmacists, veterinarians and other clinical professions. The handle's -POMONA suffix is the part that disambiguates it.
Interesting
Announcing four separate /24s rather than the single covering /22 is a small operational choice with real consequences: it costs four slots in every routing table on the internet instead of one. It usually reflects blocks that were originally acquired or deployed separately and never aggregated.
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 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 1.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS10554- Registry name
- WESTERNU-POMONA
- Registrant
- WESTERN UNIVERSITY OF HEALTH SCIENCES
- Abuse contact
- netops@westernu.edu
- Registered
- 2011-03-30
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS10554
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 4 naming AS10554
Reputation
Classification and threat
Education University, school or national research and education network.
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: 442 networks and 1,779 prefixes, as published 2026-10-22. 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