AS51173 37.203.48.0/21 CIDR and IP Range Summary.ASN: 51173 - Premier Data Networks LtdHost Count: 2046Addressable IPs: 204837.203.48.0/2437.203.49.0/2437.203.50.0/2437.203.51.0/2437.203.52.0/2437.203.53.0/2437.203.54.0/2437.203.55.0/24