IPv6 Range Calculator
Online IPv6 prefix range calculator supporting address range calculation, SLAAC generation, EUI-64 conversion, and subnet division
Documentation
Introduction
IPv6 Range Calculator computes IPv6 prefix ranges, address counts, generates SLAAC addresses, converts EUI-64, and divides subnets for network planning and administration.
Features
Prefix Range Calculation
Enter an IPv6 prefix to calculate network prefix, start/end addresses, total addresses, and usable hosts.
2001:db8::/32
SLAAC Address Generator
Generate SLAAC auto-configured addresses from IPv6 prefix and MAC address using EUI-64 format.
Prefix + MAC → SLAAC Address
EUI-64 Conversion
Convert 48-bit MAC address to 64-bit EUI-64 interface identifier with U/L bit inversion.
MAC: 00:11:22:33:44:55
Subnet Division
Generate multiple subnet prefixes from a parent prefix based on subnet prefix length.
/48 → /64 subnets
Use Cases
Network Planning
Quickly calculate IPv6 address space, allocate network segments efficiently, avoid address waste.
Device Configuration
Generate SLAAC addresses, verify EUI-64 conversion results, troubleshoot address configuration.
Subnet Division
Divide large network segments into multiple subnets for different departments or regions.
Operations & Troubleshooting
Verify address ranges, confirm devices are in the correct network segment.