AS7018 12.173.0.0/19 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 8190Addressable IPs: 819212.173.0.0/2412.173.1.0/2412.173.2.0/2412.173.3.0/2412.173.4.0/2412.173.5.0/2412.173.6.0/2412.173.7.0/2412.173.8.0/2412.173.9.0/2412.173.10.0/2412.173.11.0/2412.173.12.0/2412.173.13.0/2412.173.14.0/2412.173.15.0/2412.173.16.0/2412.173.17.0/2412.173.18.0/2412.173.19.0/2412.173.20.0/2412.173.21.0/2412.173.22.0/2412.173.23.0/2412.173.24.0/2412.173.25.0/2412.173.26.0/2412.173.27.0/2412.173.28.0/2412.173.29.0/2412.173.30.0/2412.173.31.0/24