IP subnet calculator

2a02:4780:13::-2a02:4780:14:ffff:ffff:ffff:ffff:ffff

2a02:4780:13::-2a02:4780:13:ffff:ffff:ffff:ffff:ffff
2a02:4780:13::/48

2a02:4780:14::-2a02:4780:14:ffff:ffff:ffff:ffff:ffff
2a02:4780:14::/48