AS3423 — ATTIS-ASN3423
AS3423 announces 9 IPv4 prefixes covering 3,328 addresses and 1 IPv6 prefixes.
About this network
ATTIS-ASN3423 is held by AT&T Enterprises, LLC, the entity that holds AT&T's ARIN registrations. It is one of many AT&T AS numbers, and a small one: its announced footprint is a few thousand IPv4 addresses.
What it's used for
- Part of AT&T's wider ASN estate, alongside its main backbone AS AS7018.
- A limited set of prefixes rather than a broad consumer or backbone network, which points to internal or specific-service use rather than mass eyeball broadband.
Notable
- Large carriers accumulate dozens of AS numbers through decades of mergers, acquisitions, and separate business units. Not all of them carry meaningful traffic volume.
- The ATTIS handle and the low number both date the registration to the mid 1990s, well before AT&T's modern network took its present shape.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 12.96.43.0/24
- 12.96.44.0/24
- 157.96.84.0/23
- 157.96.86.0/24
- 165.224.128.0/22
- 165.224.132.0/24
- 165.224.134.0/24
- 165.224.136.0/24
- 165.224.140.0/24
- 2610:e8::/32
Upstream networks
- AS7018 AT&T Enterprises, LLC
Adjacent networks
Routing security
- RPKI: 0 valid, 0 invalid and 13 not-found announcements; 27 ROAs.
- ASPA: none published.
- IRR: 0% of announcements registered; 25 route objects.
BGP / ASN / CIDR
awaiting query
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IPv4
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IPv6
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Search Results
IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED