CIDR address calculation and subnet mask IP address calculation tool.

CIDR subnetmask calculation

It is displayed in real time, so you can look it up quickly.

IP address
Subnetmask
 
Prefix
Rangexxxx.xxxx.xxxx.xxxx ~ xxxx.xxxx.xxxx.xxxx
Networkxxxx.xxxx.xxxx.xxxx
Host rangexxxx.xxxx.xxxx.xxxx ~ xxxx.xxxx.xxxx.xxxx
Broadcastxxxx.xxxx.xxxx.xxxx
CIDRxxxx.xxxx.xxxx.xxxx/xx
Subnetmaskxxxx.xxxx.xxxx.xxxx
IP address(bit)xxxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx
Mask(bit)xxxxxxxx.xxxxxxxx.xxxxxxxx.xxxxxxxx
Subnet mask list
PrefixSubnetmask
/1128.0.0.0
/2192.0.0.0
/3224.0.0.0
/4240.0.0.0
/5248.0.0.0
/6252.0.0.0
/7254.0.0.0
/8255.0.0.0
/9255.128.0.0
/10255.192.0.0
/11255.224.0.0
/12255.240.0.0
/13255.248.0.0
/14255.252.0.0
/15255.254.0.0
/16255.255.0.0
/17255.255.128.0
/18255.255.192.0
/19255.255.224.0
/20255.255.240.0
/21255.255.248.0
/22255.255.252.0
/23255.255.254.0
/24255.255.255.0
/25255.255.255.128
/26255.255.255.192
/27255.255.255.224
/28255.255.255.240
/29255.255.255.248
/30255.255.255.252
/31255.255.255.254
/32255.255.255.255
You can use it freely for both commercial and personal use.
This article is current as of August 2017
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