AS6389 74.191.72.0/21 CIDR and IP Range Summary.ASN: 6389 - Bellsouth.net Inc.Host Count: 2046Addressable IPs: 204874.191.72.0/2474.191.73.0/2474.191.74.0/2474.191.75.0/2474.191.76.0/2474.191.77.0/2474.191.78.0/2474.191.79.0/24