asn.dev

Autonomous system

AS40230 COLUMBUS-TEL-KS - Columbus Telephone Company

Unclassified ARIN

IPv4 addresses 13.06K 13 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Columbus Telephone Company

United States of America · AI-generated

residential telecom rural

COLUMBUS-TEL-KS is operated by Columbus Telephone Company.

What it's used for

  • The address space carries residential and business access traffic, evidenced by reverse DNS entries such as 0.host.columbus-ks.com and 255.host.columbus-ks.com.
  • The AS announces 13,056 IPv4 addresses across 13 prefixes and 1 IPv6 prefix, with only 3 observed neighbours, indicating a local access network rather than a transit provider.
  • Traffic consists of subscriber eyeballs for landline telephone, broadband Internet, and cable television services in the Columbus, Kansas area.

Notable

  • All registrants for the announced prefixes are listed as Columbus Telephone Company, matching the AS holder.
  • The inventory includes legacy 12.0.0.0/8 space alongside newer allocations like 104.143.48.0/20 and 162.0.128.0/20.

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

3 upstream, 0 downstream and 5 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS13329Kansas Fiber Network, LLC2,481
AS3356Level 3 Parent, LLC658
AS7018AT&T Enterprises, LLC376

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-10, 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 13 prefixes · 13.06K addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America14

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS40230
Registry name
COLUMBUS-TEL-KS
Registrant
Columbus Telephone Company
Abuse contact
ghamilton@columbus-telephone.com
Registered
2012-05-25
Last changed
2012-05-25
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 55 valid, 0 with no ROA
ROAs
15 authorising AS40230
ASPA
no ASPA record
IRR
100% registered · 55 of 55 announcements
Route objects
60 naming AS40230

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: 454 networks and 1,847 prefixes, as published 2026-11-11. 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