Whois: British Telecommunications PLC

Hosting Company: British Telecommunications PLC
Hosting ASN: AS2856
Hosting Address: British Telecommunications,81 Newgate Street,London GB,
Hosting Country: United Kingdom, London
Associated ASNumsAS5400, AS6871

British Telecommunications PLC ip ranges

# Range CDIR Ip count Name Location
1 5.80.0.0 - 5.80.127.255 5.80.0.0/15 33,768 BT-Central-Plus United Kingdom
2 5.80.128.0 - 5.80.255.255 5.80.0.0/15 33,768 BT-Central-Plus United Kingdom
3 5.81.0.0 - 5.81.127.255 5.81.0.0/16 33,768 BT-Central-Plus United Kingdom
4 5.81.128.0 - 5.81.255.255 5.81.0.0/16 33,768 BT-Central-Plus United Kingdom
5 31.48.0.0 - 31.49.255.255 31.48.0.0/13 131,072 BT-Central-Plus United Kingdom
6 31.50.0.0 - 31.50.255.255 31.48.0.0/13 66,536 BT-Central-Plus United Kingdom
7 31.51.0.0 - 31.51.255.255 31.48.0.0/13 66,536 BT-Central-Plus United Kingdom
8 31.52.0.0 - 31.53.255.255 31.48.0.0/13 131,072 BT-Central-Plus United Kingdom
9 31.54.0.0 - 31.54.255.255 31.48.0.0/13 66,536 BT-Central-Plus United Kingdom
10 31.55.144.0 - 31.55.151.255 31.48.0.0/13 2,048 BT-PUBIP-INT United Kingdom
11 31.64.0.0 - 31.127.255.255 31.94.0.0/16 4,194,304 UK-TM-20101125 United Kingdom
12 31.120.0.0 - 31.120.255.255 31.120.0.0/16 66,536 BTNET-3 United Kingdom
13 51.14.0.0 - 51.14.255.255 51.14.0.0/16 66,536 BT-CENTRAL-PLUS United Kingdom
14 81.128.0.0 - 81.143.255.255 81.128.0.0/12 1,049,576 BT-INFRA United Kingdom
15 81.135.0.0 - 81.135.127.255 81.128.0.0/12 33,768 BT-CENTRAL-PLUS United Kingdom
16 81.136.224.0 - 81.136.247.255 81.128.0.0/12 6,144 BT-ADSL United Kingdom
17 81.144.155.24 - 81.144.155.31 81.128.0.0/11 8 BTNET-CUSTOMER United Kingdom
18 81.144.221.200 - 81.144.221.207 81.128.0.0/11 8 BTNET-CUSTOMER United Kingdom
19 81.145.206.32 - 81.145.206.63 81.128.0.0/11 32 CONCOURSE-COMMUNICATIONS United Kingdom
20 81.147.120.0 - 81.147.127.255 81.128.0.0/11 2,048 BT-CENTRAL-PLUS United Kingdom

British Telecommunications PLC domains (0 total)

# Name IP Rank Updated
No results

British Telecommunications PLC users

# IP OS Browser Updated
1 109.148.77.220 Mac OS X Chrome Generic Last seen: 29.01.2026
2 86.152.133.98 Mac OS X Chrome Generic Last seen: 29.01.2026
3 81.153.28.142 iPad Chrome Generic for iOS Last seen: 29.01.2026
4 2a00:23c8:a919:ff01:3107:f4ec:91d8:2b5a Windows 2000 Chrome Generic Last seen: 28.01.2026
5 31.48.5.192 Windows 8 DefaultProperties Last seen: 28.01.2026
6 109.146.231.161 iPad Firefox Generic for iOS Last seen: 28.01.2026
7 109.153.174.66 Linux Chrome 43.0 Last seen: 28.01.2026
8 86.171.112.153 Unknown OS Platform Opera Generic Last seen: 28.01.2026
9 2a00:23c6:c61e:4401:de2c:57a1:e362:793f Linux Chrome 63.0 Last seen: 27.01.2026
10 86.178.217.131 Linux Chrome 41.0 Last seen: 27.01.2026
11 31.126.204.193 Windows 7 DefaultProperties Last seen: 26.01.2026
12 109.151.159.224 Windows 10 Chrome 120.0 Last seen: 26.01.2026
13 86.173.231.186 Windows 10 Chrome 122.0 Last seen: 26.01.2026
14 2a00:23c7:b899:3801:cca2:c31d:a32e:4b44 Mac OS X Firefox 3.6 Last seen: 26.01.2026
15 86.173.178.87 Windows 10 Chrome 129.0 Last seen: 25.01.2026
16 2a00:23c6:641c:2501:503f:f509:7c67:804f Linux Opera Generic Last seen: 25.01.2026
17 86.150.73.10 Android Chrome Generic for Android Last seen: 25.01.2026
18 2a00:23c7:f98a:e501:c695:ff:fe25:746b Unknown OS Platform Opera Generic Last seen: 25.01.2026
19 86.137.74.209 Windows 11 DefaultProperties Last seen: 25.01.2026
20 81.155.219.89 Mac OS X Firefox 10.0 Last seen: 25.01.2026