AS5400 212.31.208.0/20 CIDR and IP Range Summary.ASN: 5400 - British Telecommunications PLCHost Count: 4094Addressable IPs: 4096212.31.208.0/24212.31.209.0/24212.31.210.0/24212.31.211.0/24212.31.212.0/24212.31.213.0/24212.31.214.0/24212.31.215.0/24212.31.216.0/24212.31.217.0/24212.31.218.0/24212.31.219.0/24212.31.220.0/24212.31.221.0/24212.31.222.0/24212.31.223.0/24