AS7018 12.217.56.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.217.56.0/2412.217.57.0/2412.217.58.0/2412.217.59.0/2412.217.60.0/2412.217.61.0/2412.217.62.0/2412.217.63.0/24