Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS134537

Announcement observedAPNIC

AT&T Japan K.K. · ATT-NBE-US

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/6/2026, 22:48:28Snapshot expired

View network topology RDAP registration

ASN: AS134537
Registration country: United States
Name: AT&T Japan K.K.
Abbreviation: ATT-NBE-US
Registration date: 8/21/2015, 01:37:38
Status: Announcement observed
RIR: APNIC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
12.145.43.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	10/6/2026, 16:00:00	✓	×	Historical record
12.188.104.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	10/6/2026, 16:00:00	✓	×	Historical record
12.193.12.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	10/6/2026, 16:00:00	✓	×	Historical record
12.232.118.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	10/6/2026, 16:00:00	✓	×	Historical record
12.4.245.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	10/6/2026, 16:00:00	✓	×	Historical record
12.71.144.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	10/6/2026, 16:00:00	✓	×	Historical record
32.5.131.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	10/6/2026, 16:00:00	✓	×	Historical record

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: AT&T Japan K.K.
RIR: APNIC
Registration country: United States
Registration date: 8/21/2015, 01:37:38
Abuse contact: peering@intl.att.com

Snapshot trend

10/6/2026, 22:48:287 v42 v63 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn