asn.dev

Autonomous system

AS23431 AHSW-ROSEVILLE - Adventist

Unclassified ARIN

IPv4 addresses 11.26K 5 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 4 0 downstream
Flagged prefixes 0 none

Summary

Adventist Health

United States of America · AI-generated

healthcare business us

The AS handle AHSW-ROSEVILLE is held by Adventist Health.

What it's used for

  • The address space carries internal corporate infrastructure for a healthcare provider, evidenced by netnames AHSWEST and AHSWEST-BLK2 and the reverse DNS entry host163-255.ah.org.
  • The AS announces 11,264 IPv4 addresses across 5 prefixes and 1 IPv6 prefix, with only 4 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.

Notable

  • All registrants for the announced prefixes are listed as Adventist Health, matching the AS holder.
  • The address inventory consists of five IPv4 blocks in the 204.61.0.0/16 and 206.210.0.0/16 ranges, along with a single /48 IPv6 prefix, reflecting a modest internal estate.

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

4 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3356Level 3 Parent, LLC184
AS14051Fidium150
AS15830Equinix (EMEA) Acquisition Enterprises B.V.132
AS33490Comcast Cable Communications, LLC59

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-10, 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 5 prefixes · 11.26K addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America6

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS23431
Registry name
AHSW-ROSEVILLE
Registrant
Adventist Health
Abuse contact
arin-info@ah.org
Registered
2006-10-11
Last changed
2026-04-16
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 9 with no ROA
ROAs
0 authorising AS23431
ASPA
no ASPA record
IRR
11% registered · 1 of 9 announcements
Route objects
1 naming AS23431

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: 454 networks and 1,847 prefixes, as published 2026-11-11. 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