asn.dev

Autonomous system

AS29897 ATG-COMMUNICATIONS-LLC

Unclassified ARIN

IPv4 addresses 2.56K 5 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 1 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

ATG Communications

United States of America · AI-generated

cable dsl isp regional

ATG-COMMUNICATIONS-LLC is operated by ATG Communications, LLC.

What it's used for

  • The address space carries residential and business access traffic, evidenced by reverse DNS entries such as 74-121-97-0.isp.catg.com and dial-54.r2.pamann.infoave.net.
  • The AS announces 2560 IPv4 addresses across 5 prefixes and maintains 2 observed neighbours, a ratio consistent with a regional access or eyeball network rather than a transit provider.

Notable

  • Registrants for the largest prefixes include both ATG Communications, LLC and Spirit Communications, with netnames CATG-COM and IAVE-4 respectively.
  • The address inventory is composed of a mix of /22, /23, and /24 blocks, including space originally registered to Spirit Communications.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
Digital Realty Atlanta Internet ExchangeAtlanta, United States206.126.110.190

Transit providers

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

ASNetworkPaths seen
AS174Cogent Communications, LLC247
AS2711Spirit Communications159

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, 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 5 prefixes · 2.56K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America5

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS29897
Registry name
ATG-COMMUNICATIONS-LLC
Registrant
ATG Communications, LLC
Abuse contact
engineering@catg.com
Registered
2009-12-30
Last changed
2012-03-02
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
14% valid · 1 valid, 6 with no ROA
ROAs
1 authorising AS29897
ASPA
no ASPA record
IRR
100% registered · 7 of 7 announcements
Route objects
27 naming AS29897

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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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