Autonomous system
AS27185 DHS-INTERNET
Unclassified ARIN
Summary
Danbury Hospital
hospital business healthcare internal
The AS handle DHS-INTERNET is operated by Danbury Hospital - ITG.
What it's used for
- The address space is entirely registered under the netname
DANBURY-HOSP, indicating a dedicated internal network for the hospital's IT infrastructure. - The AS announces 64256 IPv4 addresses across 22 prefixes, all within the 170.77.0.0/16 range, while maintaining only 5 observed neighbours. This high address-to-neighbour ratio characterizes it as an internal corporate estate rather than a transit or access provider.
Notable
- All registrants for the announced prefixes are consistently listed as Danbury Hospital - ITG, matching the AS holder.
- The inventory consists of a finely subdivided block of IPv4 space, segmented into prefixes ranging from /18 to /24, which is typical for site-by-site segmentation within a large organization.
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 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 22 prefixes · 64.26K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 22 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS27185- Registry name
- DHS-INTERNET
- Registrant
- Danbury Hospital - ITG
- Abuse contact
- mike.matthews@danhosp.org
- Registered
- 2003-01-23
- Last changed
- 2020-06-09
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 10 with no ROA
- ROAs
- 0 authorising AS27185
- ASPA
- no ASPA record
- IRR
- 100% registered · 10 of 10 announcements
- Route objects
- 11 naming AS27185
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 1,783 prefixes, as published 2026-10-20. 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