Common LAN boundary
/64 is the normal subnet size for SLAAC-capable IPv6 LANs, but allocations and infrastructure plans can use other prefix boundaries.
Network calculator
Calculate an IPv6 prefix without IPv4 assumptions.
Enter an IPv6 address and prefix length to calculate the normalized network, range and exact address count.
Result
Calculated values
Exact BigInt address count
The calculator can represent enormous IPv6 ranges exactly rather than converting them to floating-point scientific notation.
IPv6 has no broadcast address
IPv6 uses multicast and neighbor discovery rather than IPv4-style broadcast addressing.
Local calculation
No entered IPv6 address is sent to DotMoose.