IPV6 ADDRESSING
IPv6 Calculator
Calculate the prefix, address range and total addresses in an IPv6 subnet.
IPv6 subnet details
Enter an IPv6 address with a prefix length.
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Prefix results
2001:db8:1234:5678::/64Network address2001:db8:1234:5678::
Last address in range2001:db8:1234:5678:ffff:ffff:ffff:ffff
Prefix maskffff:ffff:ffff:ffff::
Total addresses18,446,744,073,709,551,616
Prefix length/64
Host bits64
ADDRESS FAMILYIPv6
ADDRESS BITS128
PREFIX/64
IPv6 has no broadcast address. The range above shows the first and last addresses covered by the prefix. Address counts are exact, including very large prefixes.