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IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

$ ipcalc
Try:192.168.1.10/2410.0.0.0/8172.16.5.4/20203.0.113.9/29
IPv6 calculator →
private IP (RFC 1918)10.232.192.0/22
network10.232.192.0/22
broadcast10.232.195.255
first host10.232.192.1
last host10.232.195.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.232.192.0/22
address00001010.11101000.11000000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.11101000.11000000.00000000
broadcast00001010.11101000.11000011.11111111
green = network part, grey = host part
hex0x0ae8c000
decimal183025664
reverse dns0.192.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:c000

/22 split into /27 · 32 subnets

close ×
#networkhost rangebroadcast
110.232.192.0/2710.232.192.1 – 10.232.192.3010.232.192.31
210.232.192.32/2710.232.192.33 – 10.232.192.6210.232.192.63
310.232.192.64/2710.232.192.65 – 10.232.192.9410.232.192.95
410.232.192.96/2710.232.192.97 – 10.232.192.12610.232.192.127
510.232.192.128/2710.232.192.129 – 10.232.192.15810.232.192.159
610.232.192.160/2710.232.192.161 – 10.232.192.19010.232.192.191
710.232.192.192/2710.232.192.193 – 10.232.192.22210.232.192.223
810.232.192.224/2710.232.192.225 – 10.232.192.25410.232.192.255
910.232.193.0/2710.232.193.1 – 10.232.193.3010.232.193.31
1010.232.193.32/2710.232.193.33 – 10.232.193.6210.232.193.63
1110.232.193.64/2710.232.193.65 – 10.232.193.9410.232.193.95
1210.232.193.96/2710.232.193.97 – 10.232.193.12610.232.193.127
1310.232.193.128/2710.232.193.129 – 10.232.193.15810.232.193.159
1410.232.193.160/2710.232.193.161 – 10.232.193.19010.232.193.191
1510.232.193.192/2710.232.193.193 – 10.232.193.22210.232.193.223
1610.232.193.224/2710.232.193.225 – 10.232.193.25410.232.193.255
1710.232.194.0/2710.232.194.1 – 10.232.194.3010.232.194.31
1810.232.194.32/2710.232.194.33 – 10.232.194.6210.232.194.63
1910.232.194.64/2710.232.194.65 – 10.232.194.9410.232.194.95
2010.232.194.96/2710.232.194.97 – 10.232.194.12610.232.194.127
2110.232.194.128/2710.232.194.129 – 10.232.194.15810.232.194.159
2210.232.194.160/2710.232.194.161 – 10.232.194.19010.232.194.191
2310.232.194.192/2710.232.194.193 – 10.232.194.22210.232.194.223
2410.232.194.224/2710.232.194.225 – 10.232.194.25410.232.194.255
2510.232.195.0/2710.232.195.1 – 10.232.195.3010.232.195.31
2610.232.195.32/2710.232.195.33 – 10.232.195.6210.232.195.63
2710.232.195.64/2710.232.195.65 – 10.232.195.9410.232.195.95
2810.232.195.96/2710.232.195.97 – 10.232.195.12610.232.195.127
2910.232.195.128/2710.232.195.129 – 10.232.195.15810.232.195.159
3010.232.195.160/2710.232.195.161 – 10.232.195.19010.232.195.191
3110.232.195.192/2710.232.195.193 – 10.232.195.22210.232.195.223
3210.232.195.224/2710.232.195.225 – 10.232.195.25410.232.195.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /22
/00.0.0.04,294,967,2964,294,967,294-
/1128.0.0.02,147,483,6482,147,483,646-
/2192.0.0.01,073,741,8241,073,741,822-
/3224.0.0.0536,870,912536,870,910-
/4240.0.0.0268,435,456268,435,454-
/5248.0.0.0134,217,728134,217,726-
/6252.0.0.067,108,86467,108,862-
/7254.0.0.033,554,43233,554,430-
/8255.0.0.016,777,21616,777,214-
/9255.128.0.08,388,6088,388,606-
/10255.192.0.04,194,3044,194,302-
/11255.224.0.02,097,1522,097,150-
/12255.240.0.01,048,5761,048,574-
/13255.248.0.0524,288524,286-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,190-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,0221
/23255.255.254.05125102 split →
/24255.255.255.02562544 split →
/25255.255.255.1281281268 split →
/26255.255.255.192646216 split →
/27255.255.255.224323032 split →
/28255.255.255.240161464 split →
/29255.255.255.24886128 split →
/30255.255.255.25242256 split →
/31255.255.255.25422512 split →
/32255.255.255.255111,024 split →
02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →