Autonomous system
AS13590 MDMH
Unclassified ARIN
Summary
Marcus Daly Memorial Hospital
business enterprise infrastructure
A rural hospital with its own AS number and a /24 from a range allocated after the address space ran short.
What it's used for
- A community hospital's network. 256 addresses in one IPv4 prefix,
23.129.0.0/24, two observed BGP neighbours, and no IPv6 announced.
Notable
- The block is netname
MDMHC, registered to the hospital corporation. - The AS handle is the same initials without the final letter for the corporate form.
- Three addresses were queried for reverse DNS and none returned a name.
Interesting
- A netname and a handle differing by one character, both abbreviations of the same name, is what happens when two records are filed by the same person at different times without a written convention. Neither is wrong and neither matches.
- The block sits at the very start of its range, the first /24 in it, which means it was among the earliest assignments made from space released long after the original allocations. A small hospital was near the front of that queue.
- Two upstreams for a single /24 is redundancy bought for availability rather than capacity. A rural hospital's outside connections are records exchange, imaging transfer and telemedicine to larger centres, all of which matter most when the weather is bad.
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 2026-10-14, 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
AS13590- Registry name
- MDMH
- Registrant
- Marcus Daly Memorial Hospital Corporation
- Abuse contact
- jon.deong@mdmh.org
- Registered
- 2017-08-14
- Last changed
- 2017-08-14
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS13590
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 4 naming AS13590
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