Autonomous system
AS11015 TCH-AS - Texas Children's Hospital
Unclassified ARIN
Summary
Texas Children's Hospital
enterprise legacy
TCH-AS is the autonomous system of Texas Children's Hospital, the large paediatric hospital and research institution in the Texas Medical Center, Houston. ARIN records the holder at 1102 Bates Avenue — the hospital's own campus address.
What it's used for
Hospital enterprise networking, nothing more exotic. RIS observes six announced IPv4 prefixes carrying 2,048 addresses in total, no IPv6, and four observed BGP neighbours. Every announcement sits inside 207.231.40.0/22 and 207.231.44.0/22, and both are registered in ARIN to TCH-TMC2 — the hospital's own Texas Medical Center allocation. Holder and registrant match exactly, so there is no third-party space riding on this number.
The routing behaviour is textbook multihomed enterprise: a couple of aggregates plus their /23 more-specifics, announced to a small set of upstreams for redundancy and traffic engineering. Four neighbours is a network that buys connectivity, not one that sells it. What lives behind it is the clinical and administrative estate — patient-facing systems, research computing, staff access, and whatever internet-facing services the hospital hosts itself.
Notable
Healthcare organisations of this size usually run BGP for one reason: an outage is a clinical incident, not an inconvenience. The redundant /23 more-specifics inside each /22 suggest exactly that posture — the hospital wants each half of its space individually steerable if a provider path fails.
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 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 2.56K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11015- Registry name
- TCH-AS
- Registrant
- Texas Children's Hospital
- Abuse contact
- wccheong@texaschildrens.org
- Registered
- 2008-09-04
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 8 with no ROA
- ROAs
- 0 authorising AS11015
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 8 naming AS11015
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: 447 networks and 1,843 prefixes, as published 2026-11-01. 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