asn.dev

Autonomous system

AS46119 MIDMICHIGANHEALTH-AS-1

Unclassified ARIN

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

MyMichigan Health

United States of America · AI-generated

healthcare business internal

MIDMICHIGANHEALTH-AS-1 is operated by MyMichigan Health.

What it's used for

  • The address space carries internal corporate traffic, identified by the netname MRHS and registrant MidMichigan Health.
  • The network announces a single IPv4 prefix, 198.140.228.0/24, comprising 256 addresses, with 0 IPv6 prefixes.
  • With only 1 observed neighbour, the routing profile indicates a stub network for internal use rather than transit or broad access.
  • Traffic from this AS consists of internal communications for a nonprofit health system providing hospital, home health, and physician services.

Notable

  • The registrant MidMichigan Health matches the AS handle and the announced prefix owner.
  • MidMichigan Health rebranded to MyMichigan Health, a change reflected in the operator's current public identity.
  • The inventory consists of a single /24 block, representing a compact 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

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS22974Charter Communications LLC62

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

Shape and geography

IPv4 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS46119
Registry name
MIDMICHIGANHEALTH-AS-1
Registrant
MidMichigan Health
Abuse contact
networkers@mymichigan.org
Registered
2008-06-18
Last changed
2012-03-02
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS46119
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS46119

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

Cross-check