AS2856 87.251.8.0/21 CIDR and IP Range Summary.ASN: 2856 - British Telecommunications PLCHost Count: 2046Addressable IPs: 204887.251.8.0/2487.251.9.0/2487.251.10.0/2487.251.11.0/2487.251.12.0/2487.251.13.0/2487.251.14.0/2487.251.15.0/24