Autonomous system
AS11874 COLUMBUSREGIONALHOSPIAL
Unclassified ARIN
Summary
Columbus Regional Hospital
enterprise legacy
COLUMBUSREGIONALHOSPIAL (the misspelling is the registry's, not ours) is the enterprise AS of Columbus Regional Hospital, the not-for-profit regional medical centre at 2400 E. 17th Street in Columbus, Indiana. It is a single-prefix enterprise network, not a service provider.
What it's used for
Hospital-side enterprise connectivity: the AS exists so the hospital can hold its own address space and multi-home it rather than depend on a single ISP's routing. RIS sees exactly one prefix, 205.196.15.0/24 (256 addresses), and two observed neighbours. That neighbour count is the whole story of the network's role. A carrier peers with hundreds to thousands of ASes; a two-neighbour AS is an end site buying transit from a couple of upstreams for redundancy.
Notable
- The
/24is registered in ARIN to Columbus Regional Hospital itself, matching the AS holder exactly. Self-registered space announced by its own registrant is the cleanest possible signal that this is a real operator running its own network, with nothing leased, brokered, or resold. - ARIN records the AS number as registered in 2012, so despite the low five-digit number this is reissued space, not an early-internet allocation. Nothing about this network is a relic; it is a modern hospital IT department that happened to draw a recycled ASN.
Interesting
Most hospitals of this size never run BGP at all. One that does is usually protecting a specific externally-reachable dependency: a patient portal, a payer link, or clinician remote access that cannot tolerate an ISP outage.
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 2026-10-30, 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 · 256 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11874- Registry name
- COLUMBUSREGIONALHOSPIAL
- Registrant
- Columbus Regional Hospital
- Abuse contact
- breisinger@crh.org
- Registered
- 2012-01-10
- Last changed
- 2012-01-10
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS11874
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 3 naming AS11874
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 1,849 prefixes, as published 2026-10-30. 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