AS7018 64.171.128.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204864.171.128.0/2464.171.129.0/2464.171.130.0/2464.171.131.0/2464.171.132.0/2464.171.133.0/2464.171.134.0/2464.171.135.0/24