AS7018 64.171.144.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204864.171.144.0/2464.171.145.0/2464.171.146.0/2464.171.147.0/2464.171.148.0/2464.171.149.0/2464.171.150.0/2464.171.151.0/24