No addresses outside the range
The CIDR list covers the specified range exactly; it does not round outward into neighboring addresses.
Network calculator
Turn an IP range into exact CIDR blocks.
Enter the first and last IPv4 or IPv6 address. The calculator counts the range and finds an exact aligned CIDR cover.
Result
Calculated values
IPv4 and IPv6
Family is inferred from the entered endpoints. Mixing IPv4 and IPv6 values is rejected.
CIDRs are representation
Whether those blocks can or should be routed together depends on the upstream allocation and network design.
Local calculation
The addresses stay in-browser.