AS1239 63.172.152.0/21 CIDR and IP Range Summary.ASN: 1239 - SprintHost Count: 2046Addressable IPs: 204863.172.152.0/2463.172.153.0/2463.172.154.0/2463.172.155.0/2463.172.156.0/2463.172.157.0/2463.172.158.0/2463.172.159.0/24