AS5400 194.74.80.0/21 CIDR and IP Range Summary.ASN: 5400 - British Telecommunications PLCHost Count: 2046Addressable IPs: 2048194.74.80.0/24194.74.81.0/24194.74.82.0/24194.74.83.0/24194.74.84.0/24194.74.85.0/24194.74.86.0/24194.74.87.0/24