asn.dev

Autonomous system

AS53742 HRH-ASN - Houlton Regional Hospital

Unclassified ARIN

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Houlton Regional Hospital

United States of America · AI-generated

hospital business internal

The AS handle HRH-ASN is held by Houlton Regional Hospital.

What it's used for

  • The space carries internal hospital traffic, evidenced by the netname HRH-NET1 and the reverse DNS entry dhcp-64-74-221-74.pbband.net.
  • The inventory consists of 256 IPv4 addresses within a single /24 prefix (74.221.74.0/24) and 0 IPv6 prefixes.
  • With only 1 observed neighbour, the network functions as a small, isolated site-specific estate rather than a transit or access provider.
  • Traffic from this AS consists of internal communications, administrative systems, and clinical data for the 25-bed acute care facility serving Northern Maine.

Notable

  • The RDAP registrant Houlton Regional Hospital matches the AS holder name exactly.
  • The address inventory is a single contiguous /24 block, typical for a small organization's dedicated internet connection.

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

Full topology · Graph

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.

ASNetworkPaths seen
AS33422New England Telehealth Consortium65

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-05, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS53742
Registry name
HRH-ASN
Registrant
Houlton Regional Hospital
Abuse contact
pblanchette@houltonregional.org
Registered
2011-05-09
Last changed
2012-02-24
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS53742
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS53742

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: 453 networks and 1,854 prefixes, as published 2026-11-06. 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

Cross-check