Autonomous system
AS4900 ASN1
Unclassified APNIC
Summary
Montgomery County Hospital District
government legacy
ASN1 is the Montgomery County Hospital District, a Texas public hospital district that provides emergency medical services and public health programs for Montgomery County, north of Houston.
What it's used for
- Connectivity for the district's own facilities: EMS operations, dispatch and administrative systems on its own routed address space.
- A single small block for the district's own use. This is a public-sector end-user network, not a provider.
Notable
- A hospital district is a special-purpose unit of local government in Texas, funded by property tax, so this is public-sector address space rather than that of a private health system.
- The generic
ASN1handle is simply the district's first (and only) ASN, not a marker of any special status. - ARIN registered this ASN to the district in 2009, so the low number is a reissue rather than early-internet history.
Interesting
- Public-safety agencies increasingly run their own AS because dispatch and EMS systems need connectivity that survives the failure of any single local carrier.
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 2026-10-18, 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 · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS4900- Registry name
- ASN1
- Registrant
- Montgomery County Hospital District
- Abuse contact
- isdept@mchd-tx.org
- Registered
- 2009-09-24
- Last changed
- 2026-10-05
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS4900
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS4900
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 1,784 prefixes, as published 2026-10-19. 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