CIDR Cheat Sheet
Subnet mask reference table, plus common private & reserved ranges
CIDR Cheat Sheet (/8 – /32)
Bookmark this: the full mapping from prefix length to subnet mask, wildcard mask, total addresses, and usable hosts. Need this applied to a real address? Try the IPv4 Calculator.
| CIDR | Subnet Mask | Wildcard Mask | Total Addresses | Usable Hosts |
|---|
Common Private & Reserved Ranges
IPv4
| Range | Name | Description |
|---|
IPv6
| Range | Name | Description |
|---|