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NETWORK TOOLS

IP List Compare

See exactly what changed in your address space. Compare IPv4 and IPv6 coverage, even when the same addresses use different CIDRs.

Local processing · Your addresses stay in your browser

The address coverage you are starting from.

The address coverage you want to compare against.

One IP, CIDR, or inclusive start - end range per line. IPv4 and IPv6 can be mixed. # comments supported. Up to 5,000 entries per list. An empty list means no addresses.

Compare coverage, not spelling.

One /24 and its two /25 halves cover the same addresses. Duplicates and overlaps are merged before comparison. Results use the smallest exact CIDR cover without filling gaps.

When host bits are set in a CIDR, the entry is normalized to its network boundary and reported below your comparison. IPv4-mapped IPv6 addresses remain IPv6. These results describe address coverage, not which hosts are reachable or permitted by a firewall.

Data processing & privacy

Your inputs and comparison results are calculated locally. They are not uploaded or saved to browser storage. Results are copied or downloaded only when you choose.

Cloudflare hosts this site and receives connection information needed to deliver its pages. Review address changes before applying them to your network configuration.