AS7018 12.177.16.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 204812.177.16.0/2412.177.17.0/2412.177.18.0/2412.177.19.0/2412.177.20.0/2412.177.21.0/2412.177.22.0/2412.177.23.0/24