Autonomous system profile

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

AS3300

Announcement observedRIPE NCC

British Telecommunications Limited · BT

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

Last active10/19/2026, 08:37:17Snapshot expired

View network topology RDAP registration

ASN: AS3300
Registration country: India
Name: British Telecommunications Limited
Abbreviation: BT
Registration date: 9/19/2002, 07:20:43
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
136.238.168.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
136.238.185.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
136.238.187.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
136.238.229.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
136.238.232.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
136.238.238.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
136.238.239.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
136.238.240.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
136.238.241.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
136.238.243.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
185.249.5.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
185.249.6.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.157.130.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.157.132.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.157.136.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.157.144.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.157.160.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.237.64.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.92.18.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.92.19.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.92.20.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.92.24.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.92.32.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.92.80.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
192.92.82.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
194.33.52.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
195.206.69.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
195.206.70.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.137.75.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.178.237.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.178.239.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.127.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.64.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.64.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.67.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.68.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.72.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.74.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.75.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.76.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.78.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.79.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
198.207.80.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
199.6.64.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
203.187.128.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
203.187.128.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
203.187.145.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
203.187.146.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
204.140.64.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid
204.231.0.0/17BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	10/19/2026, 00:00:00	✓	×	Currently valid

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

Registration and sources

Organization: British Telecommunications Limited
RIR: RIPE NCC
Registration country: India
Registration date: 9/19/2002, 07:20:43
Abuse contact: abuse@eu.bt.net

Snapshot trend

10/19/2026, 08:37:17123 v429 v631 Upstream · 32 Uncertain

10/15/2026, 02:13:09123 v429 v630 Upstream · 30 Uncertain

10/12/2026, 15:23:59123 v429 v629 Upstream · 31 Uncertain

10/10/2026, 17:29:47123 v429 v630 Upstream · 32 Uncertain

10/3/2026, 23:55:52123 v429 v629 Upstream · 32 Uncertain

9/29/2026, 10:12:03123 v429 v631 Upstream · 32 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