AS6389 208.63.136.0/21 CIDR and IP Range Summary.ASN: 6389 - Bellsouth.net Inc.Host Count: 2046Addressable IPs: 2048208.63.136.0/24208.63.137.0/24208.63.138.0/24208.63.139.0/24208.63.140.0/24208.63.141.0/24208.63.142.0/24208.63.143.0/24