AS1239 63.173.72.0/21 CIDR and IP Range Summary.ASN: 1239 - SprintHost Count: 2046Addressable IPs: 204863.173.72.0/2463.173.73.0/2463.173.74.0/2463.173.75.0/2463.173.76.0/2463.173.77.0/2463.173.78.0/2463.173.79.0/24