asn.dev

Autonomous system

AS36431 PIH1

Unclassified APNIC

IPv4 addresses 768 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

PIH Health

United States of America · AI-generated

business healthcare corporate

The AS handle PIH1 is held by PIH Health, Inc.

What it's used for

  • The address space carries corporate infrastructure for a regional healthcare network, as indicated by the netname NETBLK-PIH-HEALTH and registrant PIH Health, Inc.
  • The inventory consists of 768 IPv4 addresses across 2 prefixes, with 2 observed neighbours, implying a small, self-contained internal corporate estate rather than a transit or access provider.

Notable

  • Registrants for both announced prefixes match the AS holder, PIH Health, Inc., confirming direct ownership of the address space.
  • PIH Health is a nonprofit regional healthcare network operating hospitals and outpatient medical offices.
  • The address inventory is finely subdivided into two small blocks, consistent with site-by-site segmentation for an internal corporate network.

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

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS46887Crown Castle Fiber LLC114
AS10753Level 3 Parent, LLC4

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

Shape and geography

IPv4 2 prefixes · 768 addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America2

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS36431
Registry name
PIH1
Registrant
PIH Health, Inc.
Abuse contact
lamont.nash@pihhealth.org
Registered
2014-07-24
Last changed
2023-09-22
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS36431
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
14 naming AS36431

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

Cross-check