AS12912 78.133.248.0/21 CIDR and IP Range Summary.ASN: 12912 - T-Mobile Polska S.A.Host Count: 2046Addressable IPs: 204878.133.248.0/2478.133.249.0/2478.133.250.0/2478.133.251.0/2478.133.252.0/2478.133.253.0/2478.133.254.0/2478.133.255.0/24