AS17957 49.236.232.0/21 CIDR and IP Range Summary.ASN: 17957 - South Tokyo CableTelevisionHost Count: 2046Addressable IPs: 204849.236.232.0/2449.236.233.0/2449.236.234.0/2449.236.235.0/2449.236.236.0/2449.236.237.0/2449.236.238.0/2449.236.239.0/24