Autonomous system
AS40200 ASN-MUNSON-CHARTER-ATT
Unclassified ARIN
Summary
Munson Healthcare
healthcare business enterprise
ASN-MUNSON-CHARTER-ATT is operated by Munson Healthcare.
What it's used for
- The address space carries internal corporate infrastructure, evidenced by netnames
MHC-1andMUNSON-HCregistered to Munson Healthcare. - The AS announces 4096 IPv4 addresses across 2 prefixes with 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.
- Traffic from this AS consists of internal communications, clinical systems, and administrative endpoints for a regional hospital network in northern Michigan.
Notable
- Registrants for both announced prefixes are Munson Healthcare, matching the AS holder.
- Munson Healthcare acquired the hospitals in Cadillac and Grayling from Trinity Health in February 2015, expanding its regional footprint.
- The inventory consists of two /21 blocks, a modest size consistent with a single corporate entity's 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
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 2 prefixes · 4.10K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS40200- Registry name
- ASN-MUNSON-CHARTER-ATT
- Registrant
- Munson Healthcare
- Abuse contact
- domadmin@mhc.net
- Registered
- 2006-08-17
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS40200
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 3 naming AS40200
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 1,778 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