Use this form to calculate the IPv6 address range based on your input IPv6 address and selected prefix length. All you need to do is enter your IPv6 address in the box below (or click on one of the DEMO buttons for an example) and then click on one of the 128 buttons that represents the prefix length you would like applied to your address. All of the derivations are further below.

Your IPv6 Address:

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0-7, 8-f

0-3, 4-7, 8-b, c-f

0-1, 2-3, 4-5, 6-7, 8-9, a-b, c-d, e-f

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f

0-7, 8-f

0-3, 4-7, 8-b, c-f

0-1, 2-3, 4-5, 6-7, 8-9, a-b, c-d, e-f

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f

0-7, 8-f

0-3, 4-7, 8-b, c-f

0-1, 2-3, 4-5, 6-7, 8-9, a-b, c-d, e-f

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f

0-7, 8-f

0-3, 4-7, 8-b, c-f

0-1, 2-3, 4-5, 6-7, 8-9, a-b, c-d, e-f

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f

User Input Address:
Hex Notation:
ip6.arpa:
Prefix Length:
Network Start Address:
Network End Address: