IP subnet calculator

2a01:c910::-2a01:c918:8eff:ffff:ffff:ffff:ffff:ffff

2a01:c918::-2a01:c918:7fff:ffff:ffff:ffff:ffff:ffff
2a01:c918::/33

2a01:c918:8000::-2a01:c918:87ff:ffff:ffff:ffff:ffff:ffff
2a01:c918:8000::/37

2a01:c918:8800::-2a01:c918:8bff:ffff:ffff:ffff:ffff:ffff
2a01:c918:8800::/38

2a01:c918:8c00::-2a01:c918:8dff:ffff:ffff:ffff:ffff:ffff
2a01:c918:8c00::/39

2a01:c918:8e00::-2a01:c918:8eff:ffff:ffff:ffff:ffff:ffff
2a01:c918:8e00::/40

2a01:c910::-2a01:c917:ffff:ffff:ffff:ffff:ffff:ffff
2a01:c910::/29