AS5400 is the autonomous system of British Telecommunications PLC. It holds 713,728 IPv4 addresses in 73 prefixes plus 7 IPv6 ranges, mainly in 
Germany.
By IPv4 addresses the network ranks #443 worldwide and #11 of 1,931 networks in Germany. That is 0.50% of the country’s IPv4 space.
The network spreads across six or more countries: United Kingdom 40%, Sweden 23%, Netherlands 14%.
The largest block is 213.15.0.0 to 213.15.255.255 with 65,536 addresses, geolocated to Düsseldorf (Stadtbezirk 06).
- IPv4 addresses
- 713,728
- IPv4 prefixes
- 73
- World rank
- #443
- Country share
- 0.50%
- IPv6 ranges
- 7
Addresses by country
United Kingdom 40%
Sweden 23%
Netherlands 14%- Germany 13%
France 5.3%
Belgium 4.6%
Largest blocks
- 213.15.0.0 Düsseldorf (Stadtbezirk 06)65,536
- 206.73.0.0 El Segundo65,536
- 195.163.0.0 Stockholm65,536
- 195.100.0.0 Stockholm65,536
- 62.180.0.0 Bonn65,536
- 62.134.0.0 Amsterdam (Amsterdam-Zuidoost)65,536
- 166.49.128.0 Zurich32,768
- 62.102.0.0 Amsterdam (Amsterdam-Zuidoost)32,768
Networks of similar size
- AS6325 Illinois Century Network
725,504 - AS17962 ShenZhen Topway Video Communication Co. Ltd
722,944 - AS24400 China Mobile Communications Group Co., Ltd717,844
- AS14265 TPx Communications717,056
- AS24547 China Mobile Communications Group Co., Ltd713,728
- AS55430 Starhub Internet Pte Ltd
712,704 - AS3758 SingNet Pte Ltd703,232
- AS7470 TRUE INTERNET CORPORATION CO. LTD.
697,088
IPv4 prefixes
- 31.95.0.0/21
- 31.95.14.0/23
- 31.95.16.0/20
- 31.95.48.0/21
- 31.95.56.0/24
- 31.95.64.0/21
- 31.95.96.0/19
- 31.95.160.0/20
- 31.95.184.0/21
- 31.95.208.0/21
- 31.95.218.0/23
- 31.95.220.0/22
- 31.95.240.0/22
- 31.95.246.0/23
- 31.95.248.0/22
- 31.95.254.0/23
- 46.248.8.0/22
- 62.5.0.0/17
- 62.102.0.0/17
- 62.134.0.0/16
- 62.172.0.0/21
- 62.173.192.0/18
- 62.180.0.0/16
- 80.255.160.0/20
- 82.138.160.0/19
- 82.150.0.0/19
- 132.244.64.0/21
- 132.244.72.0/22
- 132.244.76.0/23
- 132.244.78.0/24
- 132.244.240.0/24
- 136.238.84.0/23
- 136.238.224.0/24
- 166.49.128.0/17
- 185.94.0.0/22
- 185.249.4.0/24
- 192.109.52.0/24
- 194.33.53.0/24
- 194.33.54.0/23
- 194.50.160.0/24
- 194.74.80.0/21
- 194.76.40.0/24
- 194.107.114.0/24
- 194.213.64.0/19
- 195.36.82.0/24
- 195.36.104.0/24
- 195.60.182.0/23
- 195.66.70.0/24
- 195.90.64.0/19
- 195.99.64.0/20
- 195.100.0.0/16
- 195.163.0.0/16
- 195.171.36.0/22
- 195.182.96.0/19
- 198.178.236.0/24
- 203.158.68.0/23
- 203.158.72.0/23
- 203.158.76.0/23
- 203.158.88.0/23
- 204.52.188.0/24
- 204.231.112.0/24
- 206.73.0.0/16
- 212.8.160.0/19
- 212.21.192.0/19
- 212.31.192.0/19
- 212.41.128.0/19
- 212.108.0.0/19
- 212.127.0.0/19
- 212.162.192.0/18
- 213.15.0.0/16
- 213.137.160.0/19
- 213.194.0.0/18
- 213.236.64.0/18
Questions and answers
Who owns AS5400?
Autonomous system AS5400 is operated by British Telecommunications PLC.
How many IP addresses does AS5400 have?
The network holds 713,728 IPv4 addresses in 73 prefixes, plus 7 IPv6 ranges.
Which country is AS5400 in?
The main country is Germany, with addresses in 5 more countries.
How big is AS5400?
By IPv4 addresses it ranks #443 worldwide.
What is the largest address block of AS5400?
213.15.0.0 to 213.15.255.255, 65,536 addresses.