CIDR Calculator
Enter any IPv4 or IPv6 block in CIDR notation to see the network address, broadcast address, subnet mask, wildcard mask, usable host range, and total addresses. Runs entirely in your browser — nothing is sent to the server.
Runs in your browser
Network
Try:
Addressing
- Network address
- Broadcast address
- First usable
- Last usable
- Prefix length
Masks and counts
- Subnet mask
- Wildcard mask
- Total addresses
- Usable hosts
- Address class
Binary and integer
- Network (binary)
- Mask (binary)
- Network (integer)
- Network (hex)
Neighbouring blocks
The adjacent networks of the same size.