AS21928 172.48.0.0/12 CIDR and IP Range Summary.ASN: 21928 - T-Mobile USA Inc.Host Count: 1048574Addressable IPs: 1048576172.48.0.0/16172.49.0.0/16172.50.0.0/16172.51.0.0/16172.52.0.0/16172.53.0.0/16172.54.0.0/16172.55.0.0/16172.56.0.0/16172.57.0.0/16172.58.0.0/16172.59.0.0/16172.60.0.0/16172.61.0.0/16172.62.0.0/16172.63.0.0/16