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IPv6 CIDR Calculator

The IPv6 CIDR to Range tool provides the start and end IPv6 address for an IPv6 address range using CIDR notation.

Enter an IPv6 address with CIDR:
Start Range:  a:b:c:0:0:0:0:0
End Range:  a:b:d:ffff:ffff:ffff:ffff:ffff
No. of host:  2417851639229258349412352