AS19957 66.4.243.0/24 CIDR and IP Range Summary.ASN: 19957 - AT&T Corp.Host Count: 254Addressable IPs: 256 66.4.243.066.4.243.166.4.243.266.4.243.366.4.243.466.4.243.566.4.243.666.4.243.766.4.243.866.4.243.966.4.243.1066.4.243.1166.4.243.1266.4.243.1366.4.243.1466.4.243.1566.4.243.1666.4.243.1766.4.243.1866.4.243.1966.4.243.2066.4.243.2166.4.243.2266.4.243.2366.4.243.2466.4.243.2566.4.243.2666.4.243.2766.4.243.2866.4.243.2966.4.243.3066.4.243.3166.4.243.3266.4.243.3366.4.243.3466.4.243.3566.4.243.3666.4.243.3766.4.243.3866.4.243.3966.4.243.4066.4.243.4166.4.243.4266.4.243.4366.4.243.4466.4.243.4566.4.243.4666.4.243.4766.4.243.4866.4.243.4966.4.243.5066.4.243.5166.4.243.5266.4.243.5366.4.243.5466.4.243.5566.4.243.5666.4.243.5766.4.243.5866.4.243.5966.4.243.6066.4.243.6166.4.243.6266.4.243.6366.4.243.6466.4.243.6566.4.243.6666.4.243.6766.4.243.6866.4.243.6966.4.243.7066.4.243.7166.4.243.7266.4.243.7366.4.243.7466.4.243.7566.4.243.7666.4.243.7766.4.243.7866.4.243.7966.4.243.8066.4.243.8166.4.243.8266.4.243.8366.4.243.8466.4.243.8566.4.243.8666.4.243.8766.4.243.8866.4.243.8966.4.243.9066.4.243.9166.4.243.9266.4.243.9366.4.243.9466.4.243.9566.4.243.9666.4.243.9766.4.243.9866.4.243.9966.4.243.10066.4.243.10166.4.243.10266.4.243.10366.4.243.10466.4.243.10566.4.243.10666.4.243.10766.4.243.10866.4.243.10966.4.243.11066.4.243.11166.4.243.11266.4.243.11366.4.243.11466.4.243.11566.4.243.11666.4.243.11766.4.243.11866.4.243.11966.4.243.12066.4.243.12166.4.243.12266.4.243.12366.4.243.12466.4.243.12566.4.243.12666.4.243.12766.4.243.12866.4.243.12966.4.243.13066.4.243.13166.4.243.13266.4.243.13366.4.243.13466.4.243.13566.4.243.13666.4.243.13766.4.243.13866.4.243.13966.4.243.14066.4.243.14166.4.243.14266.4.243.14366.4.243.14466.4.243.14566.4.243.14666.4.243.14766.4.243.14866.4.243.14966.4.243.15066.4.243.15166.4.243.15266.4.243.15366.4.243.15466.4.243.15566.4.243.15666.4.243.15766.4.243.15866.4.243.15966.4.243.16066.4.243.16166.4.243.16266.4.243.16366.4.243.16466.4.243.16566.4.243.16666.4.243.16766.4.243.16866.4.243.16966.4.243.17066.4.243.17166.4.243.17266.4.243.17366.4.243.17466.4.243.17566.4.243.17666.4.243.17766.4.243.17866.4.243.17966.4.243.18066.4.243.18166.4.243.18266.4.243.18366.4.243.18466.4.243.18566.4.243.18666.4.243.18766.4.243.18866.4.243.18966.4.243.19066.4.243.19166.4.243.19266.4.243.19366.4.243.19466.4.243.19566.4.243.19666.4.243.19766.4.243.19866.4.243.19966.4.243.20066.4.243.20166.4.243.20266.4.243.20366.4.243.20466.4.243.20566.4.243.20666.4.243.20766.4.243.20866.4.243.20966.4.243.21066.4.243.21166.4.243.21266.4.243.21366.4.243.21466.4.243.21566.4.243.21666.4.243.21766.4.243.21866.4.243.21966.4.243.22066.4.243.22166.4.243.22266.4.243.22366.4.243.22466.4.243.22566.4.243.22666.4.243.22766.4.243.22866.4.243.22966.4.243.23066.4.243.23166.4.243.23266.4.243.23366.4.243.23466.4.243.23566.4.243.23666.4.243.23766.4.243.23866.4.243.23966.4.243.24066.4.243.24166.4.243.24266.4.243.24366.4.243.24466.4.243.24566.4.243.24666.4.243.24766.4.243.24866.4.243.24966.4.243.25066.4.243.25166.4.243.25266.4.243.25366.4.243.25466.4.243.255