AS1239 65.172.136.0/21 CIDR and IP Range Summary.ASN: 1239 - SprintHost Count: 2046Addressable IPs: 204865.172.136.0/2465.172.137.0/2465.172.138.0/2465.172.139.0/2465.172.140.0/2465.172.141.0/2465.172.142.0/2465.172.143.0/24