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 31.48.0.0 - 31.49.255.255 31.48.0.0/13 131,072 BT-Central-Plus United Kingdom
5 31.50.0.0 - 31.50.255.255 31.48.0.0/13 66,536 BT-Central-Plus United Kingdom
6 31.51.0.0 - 31.51.255.255 31.48.0.0/13 66,536 BT-Central-Plus United Kingdom
7 31.52.0.0 - 31.53.255.255 31.48.0.0/13 131,072 BT-Central-Plus United Kingdom
8 31.54.0.0 - 31.54.255.255 31.48.0.0/13 66,536 BT-Central-Plus United Kingdom
9 31.55.144.0 - 31.55.151.255 31.48.0.0/13 2,048 BT-PUBIP-INT United Kingdom
10 31.64.0.0 - 31.127.255.255 31.94.0.0/16 4,194,304 UK-TM-20101125 United Kingdom
11 31.120.0.0 - 31.120.255.255 31.120.0.0/16 66,536 BTNET-3 United Kingdom
12 81.128.0.0 - 81.143.255.255 81.128.0.0/12 1,049,576 BT-INFRA United Kingdom
13 81.135.0.0 - 81.135.127.255 81.128.0.0/12 33,768 BT-CENTRAL-PLUS United Kingdom
14 81.136.224.0 - 81.136.247.255 81.128.0.0/12 6,144 BT-ADSL United Kingdom
15 81.144.155.24 - 81.144.155.31 81.128.0.0/11 8 BTNET-CUSTOMER United Kingdom
16 81.144.221.200 - 81.144.221.207 81.128.0.0/11 8 BTNET-CUSTOMER United Kingdom
17 81.145.206.32 - 81.145.206.63 81.128.0.0/11 32 CONCOURSE-COMMUNICATIONS United Kingdom
18 81.147.120.0 - 81.147.127.255 81.128.0.0/11 2,048 BT-CENTRAL-PLUS United Kingdom
19 81.151.0.0 - 81.151.255.255 81.128.0.0/11 66,536 BT-CENTRAL-PLUS United Kingdom
20 81.153.0.0 - 81.153.255.255 81.128.0.0/11 66,536 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 2a00:23c8:414e:b101:15e:5ce2:d065:dec9 Unknown OS Platform Opera Generic Last seen: 08.01.2026
2 81.155.238.234 iPad Chrome 60.0 for iOS Last seen: 08.01.2026
3 2a00:23c5:7b3f:7401:70b7:c1a9:f3f:fd70 Mac OS X Chrome Generic Last seen: 08.01.2026
4 31.111.67.131 iPod Mobile Safari Generic Last seen: 08.01.2026
5 86.128.204.49 Windows XP DefaultProperties Last seen: 08.01.2026
6 86.177.58.41 Unknown OS Platform Chrome Generic Last seen: 08.01.2026
7 2a00:23c8:5597:7501:c291:b9ff:fe6c:d0a9 Mac OS X Firefox Generic Last seen: 07.01.2026
8 81.132.220.214 Windows Vista IE 6.0 for Desktop Last seen: 07.01.2026
9 2a00:23c5:7dbe:c901:7413:c8c2:7f12:888a Mac OS X Firefox 3.6 Last seen: 07.01.2026
10 2a00:23c7:9606:7a01:d193:11a1:79ed:a4fe Linux Opera Generic Last seen: 06.01.2026
11 31.126.71.109 Mac OS X Safari 4.0 Last seen: 06.01.2026
12 31.49.253.151 Linux Opera Generic Last seen: 06.01.2026
13 86.155.107.144 Linux Opera Generic Last seen: 05.01.2026
14 86.154.112.15 Linux Opera Generic Last seen: 05.01.2026
15 31.53.97.167 Linux Chrome Generic Last seen: 03.01.2026
16 86.178.70.112 Windows 10 Chrome 143.0 Last seen: 03.01.2026
17 2a00:23c7:f58a:201:dabe:65ff:fe62:bd54 Linux Opera Generic Last seen: 03.01.2026
18 109.156.40.15 Windows 7 Chrome Generic Last seen: 03.01.2026
19 109.145.15.137 Linux Firefox 3.6 Last seen: 02.01.2026
20 147.148.12.210 Mac OS X Firefox Generic Last seen: 31.12.2025