CIDR calculator
Runs entirely in your browser. Useful for reading IP reports, ACLs, and route announcements.
Result
Canonical CIDR
18.64.128.0/22
Version
IPv4
Prefix
/22
Network
18.64.128.0
Broadcast
18.64.131.255
First address
18.64.128.1
Last address
18.64.131.254
Netmask
255.255.252.0
Wildcard
0.0.3.255
Total addresses
1024
Usable hosts
1022