Autonomous system
AS16600 UTHEALTHCENTER-TYLER
Unclassified ARIN
Summary
University of Texas Health Science Center at Tyler
education research infrastructure
One institution, three names, two blocks, and a single way out for thirty-three thousand addresses.
What it's used for
- A university health centre's network. Two IPv4 prefixes announced from the United States, no IPv6, thirty-three thousand and twenty-four addresses, through one observed BGP neighbour.
Notable
- The AS handle names a health centre at a town. The larger block is registered to the university at that town, without the health part; the smaller one to the health centre, without the town.
- The two netnames disagree the same way: one is the university at the town plus the first three parts of the address, the other joins the university's short form to a squeezed abbreviation of health centre and the town.
- The larger block lists a contact named for two functions joined by a conjunction, networks and operations.
- The two blocks differ enormously in size: one is nearly the whole announcement, the other the smallest size that routes.
- Six addresses were queried for reverse DNS and none returned a name.
Interesting
- A large block and a tiny one under related but non-identical names is an institution given campus-scale space once and a service-sized block later, by a different office. The registry keeps both spellings because it has no way to know they are one place.
- Thirty-three thousand addresses through one upstream is heavy dependence on a single link, and ordinary for a campus connected through a research network.
- Nothing here answers a reverse lookup, so the naming lives inside a domain the registry never sees.
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 |
|---|---|---|
| AS6922 | Texas Department of Information Resources | 115 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-24, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 33.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS16600- Registry name
- UTHEALTHCENTER-TYLER
- Registrant
- University of Texas Health Science Center at Tyler
- Abuse contact
- nobody@example.com
- Registered
- 2000-05-23
- Last changed
- 2015-10-16
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS16600
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS16600
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 1,779 prefixes, as published 2026-10-24. 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