AS6389 66.156.168.0/21 CIDR and IP Range Summary.ASN: 6389 - Bellsouth.net Inc.Host Count: 2046Addressable IPs: 204866.156.168.0/2466.156.169.0/2466.156.170.0/2466.156.171.0/2466.156.172.0/2466.156.173.0/2466.156.174.0/2466.156.175.0/24