AS1239 208.21.0.0/21 CIDR and IP Range Summary.ASN: 1239 - SprintHost Count: 2046Addressable IPs: 2048208.21.0.0/24208.21.1.0/24208.21.2.0/24208.21.3.0/24208.21.4.0/24208.21.5.0/24208.21.6.0/24208.21.7.0/24