asn.dev

Autonomous system

AS40264 TWC-40264-WI-MN-UPPERMI-C3

Unclassified APNIC

IPv4 addresses 15.10K 19 prefixes
IPv6 prefixes 7 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 139 downstream
Flagged prefixes 0 none

Summary

Charter Communications

United States of America · AI-generated

residential business cable spectrum

TWC-40264-WI-MN-UPPERMI-C3 is held by Charter Communications LLC.

What it's used for

  • The address space carries residential and business broadband traffic, evidenced by reverse DNS entries such as syn-192-062-234-000.res.spectrum.com and syn-076-058-009-000.biz.spectrum.com.
  • The AS announces 14,592 IPv4 addresses and 7 IPv6 prefixes, with 146 observed neighbours, indicating a large-scale access network serving end-users rather than a transit provider.
  • Traffic from this AS consists of subscriber internet, television, and voice services for homes and businesses under the Spectrum brand.

Notable

  • Registrants for the largest prefixes include Charter Communications INC, Charter Communications LLC, and Charter Communications Inc, aligning with the announcer.
  • Some prefixes, such as 82.27.4.0/22, are registered to Private Customer, while 47.45.46.0/24 is registered to NMHM Hotels and 47.45.59.0/24 to Star Communications LLC.
  • The inventory includes a mix of /21, /22, and /24 prefixes, with the largest being 144.168.16.0/21, 192.62.232.0/21, and 199.15.240.0/21.

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, 139 downstream and 151 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS10796Charter Communications Inc627
AS20115Charter Communications LLC625

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, 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 19 prefixes · 15.10K addresses IPv6 7 prefixes

CountryNamePrefixes
USUnited States of America26

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS40264
Registry name
TWC-40264-WI-MN-UPPERMI-C3
Registrant
Charter Communications LLC
Abuse contact
abuse@charter.net
Registered
2017-07-25
Last changed
2022-04-13
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
68% valid · 15 valid, 7 with no ROA
ROAs
25 authorising AS40264
ASPA
no ASPA record
IRR
45% registered · 10 of 22 announcements 7 other origin
Route objects
19 naming AS40264

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: 440 networks and 1,773 prefixes, as published 2026-10-13. 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