AS2856 81.144.0.0/12 CIDR and IP Range Summary.ASN: 2856 - British Telecommunications PLCHost Count: 1048574Addressable IPs: 104857681.144.0.0/1681.145.0.0/1681.146.0.0/1681.147.0.0/1681.148.0.0/1681.149.0.0/1681.150.0.0/1681.151.0.0/1681.152.0.0/1681.153.0.0/1681.154.0.0/1681.155.0.0/1681.156.0.0/1681.157.0.0/1681.158.0.0/1681.159.0.0/16