Autonomous system
AS13809 UAMS-ASN
Unclassified ARIN
Summary
University of Arkansas for Medical Sciences
education research infrastructure
Twenty-one prefixes and the largest academic address count in this range, all one netname, behind a single upstream.
What it's used for
- A medical university and hospital system's network. 130,048 addresses across 21 IPv4 prefixes, one observed BGP neighbour, and no IPv6 announced.
Notable
- The prefixes divide two parent ranges into pieces from a /17 down to a /23.
- Every readable one is netname
UAMSNET, registered to the university. - One neighbour carries all of it.
- One of the twelve sampled blocks failed to return a registry record.
- Eighteen addresses were queried for reverse DNS and none returned a name.
Interesting
- This is the largest address count of any academic network in this range, and it sits behind one upstream. Four universities here hold between sixty-five and a hundred and thirty thousand addresses and three of them route through a single provider, which says the AS number is about holding space rather than about surviving a failure.
- Splitting two parents into twenty-one announcements while labelling every piece identically is deaggregation for internal reasons that the registry does not record. A reader sees twenty-one routes and one organisation.
- A teaching hospital's network carries clinical systems as well as academic ones, which makes the single upstream the most interesting number in the record.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS40581 | Arkansas Research and Education Optical Network | 291 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 21 prefixes · 130K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 21 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13809- Registry name
- UAMS-ASN
- Registrant
- University of Arkansas for Medical Sciences
- Abuse contact
- sbynum@uams.edu
- Registered
- 1999-08-23
- Last changed
- 2025-09-16
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 5 valid, 0 with no ROA
- ROAs
- 3 authorising AS13809
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 5 naming AS13809
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: 442 networks and 1,772 prefixes, as published 2026-10-15. 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