AS7018 12.171.248.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.171.248.0/2412.171.249.0/2412.171.250.0/2412.171.251.0/2412.171.252.0/2412.171.253.0/2412.171.254.0/2412.171.255.0/24