AS1239 192.53.136.0/21 CIDR and IP Range Summary.ASN: 1239 - SprintHost Count: 2046Addressable IPs: 2048192.53.136.0/24192.53.137.0/24192.53.138.0/24192.53.139.0/24192.53.140.0/24192.53.141.0/24192.53.142.0/24192.53.143.0/24