AS5400 167.184.184.0/21 CIDR and IP Range Summary.ASN: 5400 - British Telecommunications PLCHost Count: 2046Addressable IPs: 2048167.184.184.0/24167.184.185.0/24167.184.186.0/24167.184.187.0/24167.184.188.0/24167.184.189.0/24167.184.190.0/24167.184.191.0/24