AS7018 12.31.0.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.31.0.0/2412.31.1.0/2412.31.2.0/2412.31.3.0/2412.31.4.0/2412.31.5.0/2412.31.6.0/2412.31.7.0/2412.31.8.0/2412.31.9.0/2412.31.10.0/2412.31.11.0/2412.31.12.0/2412.31.13.0/2412.31.14.0/2412.31.15.0/24