AS7018 66.136.120.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204866.136.120.0/2466.136.121.0/2466.136.122.0/2466.136.123.0/2466.136.124.0/2466.136.125.0/2466.136.126.0/2466.136.127.0/24