asn.dev

Autonomous system

AS29878 CHMP-ASN - Community Hospital of the Monterey Peninsula

Unclassified ARIN

IPv4 addresses 8.20K 5 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 2 see address space

Summary

Community Hospital of the Monterey Peninsula

United States of America · AI-generated

healthcare business enterprise

The AS handle CHMP-ASN is held by Community Hospital of the Monterey Peninsula.

What it's used for

  • The address space carries internal hospital infrastructure, evidenced by netnames CHOMP and reverse DNS entries like chomp-sw-1.cenic.net and chomp--sol-agg4-10g.cenic.net.
  • The AS announces 8200 IPv4 addresses across 5 prefixes and 1 IPv6 prefix, with only 3 observed neighbours, indicating a small, self-contained enterprise network rather than a transit or access provider.

Notable

  • Registrants for the four largest prefixes are listed as Community Hospital of the Monterey, while the smallest prefix (137.164.40.64/29) is registered to CENIC with netname CALREN, suggesting a leased or transit segment from the regional network.
  • The address inventory is finely subdivided into four contiguous blocks in the 204.179.192.0/20 range plus a small /29, consistent with internal site segmentation for a single corporate entity.

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
AS33651Comcast Cable Communications, LLC84
AS2152CENIC42

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, 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 · 8.20K addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America6

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS29878
Registry name
CHMP-ASN
Registrant
Community Hospital of the Monterey Peninsula
Abuse contact
NetworkAdmins@chomp.org
Registered
2003-05-27
Last changed
2025-03-25
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS29878
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
41 naming AS29878

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: 451 networks and 1,853 prefixes, as published 2026-11-04. 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