Autonomous system profile

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

AS11396

Announcement observedARIN

Williams Information Technology LLC · TWC-ASN

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

Last active9/30/2026, 04:34:59Snapshot expired

View network topology RDAP registration

ASN: AS11396
Registration country: United States
Name: Williams Information Technology LLC
Abbreviation: TWC-ASN
Registration date: 8/3/1998, 04:00:00
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
151.142.0.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.128.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.128.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.132.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.144.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.154.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.155.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.160.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.160.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.168.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.224.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.224.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.240.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.250.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.251.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.4.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.64.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.65.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.66.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.68.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.69.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.70.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
151.142.71.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
170.21.246.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record
170.21.247.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 00:00:00	10/5/2026, 08:00:00	✓	×	Historical record

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

Registration and sources

Organization: Williams Information Technology LLC
RIR: ARIN
Registration country: United States
Registration date: 8/3/1998, 04:00:00
Abuse contact: domain-tech@williams.com

Snapshot trend

9/30/2026, 04:34:5925 v40 v68 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