AS1239 63.170.72.0/21 CIDR and IP Range Summary.ASN: 1239 - SprintHost Count: 2046Addressable IPs: 204863.170.72.0/2463.170.73.0/2463.170.74.0/2463.170.75.0/2463.170.76.0/2463.170.77.0/2463.170.78.0/2463.170.79.0/24