AS7018 12.56.0.0/13 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 524286Addressable IPs: 52428812.56.0.0/1612.56.0.0/1612.56.0.0/1612.56.0.0/1612.56.0.0/1612.56.0.0/1612.56.0.0/1612.56.0.0/16