asn.dev

Autonomous system

AS40673 SHELTERCUSTOMER - Shelter Mutual Insurance

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 2 0 downstream
Flagged prefixes 0 none

Summary

Shelter Mutual Insurance

United States of America · AI-generated

business insurance corporate

The AS handle SHELTERCUSTOMER is held by Shelter Mutual Insurance.

What it's used for

  • The address space carries corporate infrastructure, evidenced by the netname CTL-SMI-39-NET2 and reverse DNS entries pointing to centurylink.net.
  • The inventory consists of 256 IPv4 addresses within a single /24 prefix (173.248.91.0/24) and 0 IPv6 prefixes, with 2 observed neighbours.
  • Traffic from this AS represents internal corporate operations for a mutual insurance company, including office workers and business systems, rather than consumer or transit traffic.

Notable

  • The registrant Shelter Mutual Insurance agrees with the announcer, and the netname CTL-SMI-39-NET2 reflects the company's identity.
  • The address inventory is a single contiguous /24 block, indicating a small, self-contained corporate 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

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

ASNetworkPaths seen
AS4581Socket Holdings Corporation38
AS3356Level 3 Parent, LLC24

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-08, 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
AS40673
Registry name
SHELTERCUSTOMER
Registrant
Shelter Mutual Insurance
Abuse contact
isnetworkinfrastructureteam@shelterinsurance.com
Registered
2008-02-25
Last changed
2025-05-14
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS40673
ASPA
no ASPA record
IRR
0% registered · 0 of 1 announcements
Route objects
0 naming AS40673

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: 455 networks and 1,854 prefixes, as published 2026-11-09. 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