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CIDR table

/32 subnet

A /32 prefix equals subnet mask 255.255.255.255 and wildcard 0.0.0.0. It holds 1 addresses, 1 of them usable by hosts.

/32
Subnet mask
255.255.255.255
Wildcard mask
0.0.0.0
Binary mask
11111111.11111111.11111111.11111111
Total addresses
1
Usable hosts
1
Example network
10.0.0.0/32
Example range
10.0.0.0 – 10.0.0.0
How many fit
16,777,216 × /32 in a /8, 65,536 × /32 in a /16, 256 × /32 in a /24

A single address. Used for loopback interfaces, host routes and firewall rules.

Open 10.0.0.0/32 in the calculator