Network Tools

IPv4 Range to CIDR

Split an IPv4 start/end range into the minimal exact set of CIDR blocks.

IPv4 range to CIDR
Builds the minimal set of CIDR blocks that exactly covers the range.
64Total addresses
1CIDR blocks
3232238080Start decimal
3232238143End decimal
Exact CIDR cover
CIDRAddresses
192.168.10.0/2664

IPv4 Range to CIDR

Convert an inclusive IPv4 start/end range into the smallest set of CIDR blocks that covers it exactly without including outside addresses.

Use Cases

  • Rewrite firewall or access-control ranges as CIDR
  • Verify address counts and decimal forms
  • This tool handles IPv4 only, not IPv6