AS7018 77.223.192.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204877.223.192.0/2477.223.193.0/2477.223.194.0/2477.223.195.0/2477.223.196.0/2477.223.197.0/2477.223.198.0/2477.223.199.0/24