AS7018 66.136.0.0/19 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 8190Addressable IPs: 819266.136.0.0/2466.136.1.0/2466.136.2.0/2466.136.3.0/2466.136.4.0/2466.136.5.0/2466.136.6.0/2466.136.7.0/2466.136.8.0/2466.136.9.0/2466.136.10.0/2466.136.11.0/2466.136.12.0/2466.136.13.0/2466.136.14.0/2466.136.15.0/2466.136.16.0/2466.136.17.0/2466.136.18.0/2466.136.19.0/2466.136.20.0/2466.136.21.0/2466.136.22.0/2466.136.23.0/2466.136.24.0/2466.136.25.0/2466.136.26.0/2466.136.27.0/2466.136.28.0/2466.136.29.0/2466.136.30.0/2466.136.31.0/24