AS1239 65.172.56.0/21 CIDR and IP Range Summary.ASN: 1239 - SprintHost Count: 2046Addressable IPs: 204865.172.56.0/2465.172.57.0/2465.172.58.0/2465.172.59.0/2465.172.60.0/2465.172.61.0/2465.172.62.0/2465.172.63.0/24