AS7018 12.183.0.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409612.183.0.0/2412.183.1.0/2412.183.2.0/2412.183.3.0/2412.183.4.0/2412.183.5.0/2412.183.6.0/2412.183.7.0/2412.183.8.0/2412.183.9.0/2412.183.10.0/2412.183.11.0/2412.183.12.0/2412.183.13.0/2412.183.14.0/2412.183.15.0/24