AT&T Corp. - ITS

Data as of 2026-08-09
BGP inherited
Complete entity footprint
3 linked clusters · 4,523 netblocks · 122,157,312 IPv4 addresses · 394 IPv6 prefixes
This organisation's clusters combined by evidence — shared operating domain attdns.com — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
Cluster stats
Netblocks5 · 143,616 IPv4 addresses
Cluster ID218401524
RegistryARIN
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 18 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (5)

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CIDR Org name Registry Status Confidence
63.242.0.0 – 63.242.239.255 AT&T ITS ARIN ASSIGNMENT ● high
192.128.0.0/16 AT&T Corp. - ITS ARIN DIRECT ALLOCATION ● high
198.133.152.0/24 AT&T ITS ARIN ASSIGNMENT ● high
209.62.128.0/19 AT&T Corp. - ITS ARIN DIRECT ALLOCATION ● high
209.135.32.0/19 AT&T Corp. - ITS ARIN DIRECT ALLOCATION ● high

Domains hosted in this network

what's this?
attcompute.com usi.net

Network trust

what's this?
RPKI hygiene: D how networks compare →
20.0% of checked blocks have valid RPKI ROA coverage (1 of 5)
No discrepancies found among checked blocks.

NIC Handles

ABUSE7-ARIN ATTITS ATTITS-1 ATTITS-1 ATTSE-Z C00008005 CKN23-ARIN CKN23-ARIN CKN23-ARIN CKN23-ARIN CKN23-ARIN CKN23-ARIN +6 more