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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)10.185.52.0/22
network10.185.52.0/22
broadcast10.185.55.255
first host10.185.52.1
last host10.185.55.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.185.52.0/22
address00001010.10111001.00110100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10111001.00110100.00000000
broadcast00001010.10111001.00110111.11111111
green = network part, grey = host part
hex0x0ab93400
decimal179909632
reverse dns0.52.185.10.in-addr.arpa
ipv4-mapped::ffff:ab9:3400

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.185.52.0/2810.185.52.1 – 10.185.52.1410.185.52.15
210.185.52.16/2810.185.52.17 – 10.185.52.3010.185.52.31
310.185.52.32/2810.185.52.33 – 10.185.52.4610.185.52.47
410.185.52.48/2810.185.52.49 – 10.185.52.6210.185.52.63
510.185.52.64/2810.185.52.65 – 10.185.52.7810.185.52.79
610.185.52.80/2810.185.52.81 – 10.185.52.9410.185.52.95
710.185.52.96/2810.185.52.97 – 10.185.52.11010.185.52.111
810.185.52.112/2810.185.52.113 – 10.185.52.12610.185.52.127
910.185.52.128/2810.185.52.129 – 10.185.52.14210.185.52.143
1010.185.52.144/2810.185.52.145 – 10.185.52.15810.185.52.159
1110.185.52.160/2810.185.52.161 – 10.185.52.17410.185.52.175
1210.185.52.176/2810.185.52.177 – 10.185.52.19010.185.52.191
1310.185.52.192/2810.185.52.193 – 10.185.52.20610.185.52.207
1410.185.52.208/2810.185.52.209 – 10.185.52.22210.185.52.223
1510.185.52.224/2810.185.52.225 – 10.185.52.23810.185.52.239
1610.185.52.240/2810.185.52.241 – 10.185.52.25410.185.52.255
1710.185.53.0/2810.185.53.1 – 10.185.53.1410.185.53.15
1810.185.53.16/2810.185.53.17 – 10.185.53.3010.185.53.31
1910.185.53.32/2810.185.53.33 – 10.185.53.4610.185.53.47
2010.185.53.48/2810.185.53.49 – 10.185.53.6210.185.53.63
2110.185.53.64/2810.185.53.65 – 10.185.53.7810.185.53.79
2210.185.53.80/2810.185.53.81 – 10.185.53.9410.185.53.95
2310.185.53.96/2810.185.53.97 – 10.185.53.11010.185.53.111
2410.185.53.112/2810.185.53.113 – 10.185.53.12610.185.53.127
2510.185.53.128/2810.185.53.129 – 10.185.53.14210.185.53.143
2610.185.53.144/2810.185.53.145 – 10.185.53.15810.185.53.159
2710.185.53.160/2810.185.53.161 – 10.185.53.17410.185.53.175
2810.185.53.176/2810.185.53.177 – 10.185.53.19010.185.53.191
2910.185.53.192/2810.185.53.193 – 10.185.53.20610.185.53.207
3010.185.53.208/2810.185.53.209 – 10.185.53.22210.185.53.223
3110.185.53.224/2810.185.53.225 – 10.185.53.23810.185.53.239
3210.185.53.240/2810.185.53.241 – 10.185.53.25410.185.53.255
3310.185.54.0/2810.185.54.1 – 10.185.54.1410.185.54.15
3410.185.54.16/2810.185.54.17 – 10.185.54.3010.185.54.31
3510.185.54.32/2810.185.54.33 – 10.185.54.4610.185.54.47
3610.185.54.48/2810.185.54.49 – 10.185.54.6210.185.54.63
3710.185.54.64/2810.185.54.65 – 10.185.54.7810.185.54.79
3810.185.54.80/2810.185.54.81 – 10.185.54.9410.185.54.95
3910.185.54.96/2810.185.54.97 – 10.185.54.11010.185.54.111
4010.185.54.112/2810.185.54.113 – 10.185.54.12610.185.54.127
4110.185.54.128/2810.185.54.129 – 10.185.54.14210.185.54.143
4210.185.54.144/2810.185.54.145 – 10.185.54.15810.185.54.159
4310.185.54.160/2810.185.54.161 – 10.185.54.17410.185.54.175
4410.185.54.176/2810.185.54.177 – 10.185.54.19010.185.54.191
4510.185.54.192/2810.185.54.193 – 10.185.54.20610.185.54.207
4610.185.54.208/2810.185.54.209 – 10.185.54.22210.185.54.223
4710.185.54.224/2810.185.54.225 – 10.185.54.23810.185.54.239
4810.185.54.240/2810.185.54.241 – 10.185.54.25410.185.54.255
4910.185.55.0/2810.185.55.1 – 10.185.55.1410.185.55.15
5010.185.55.16/2810.185.55.17 – 10.185.55.3010.185.55.31
5110.185.55.32/2810.185.55.33 – 10.185.55.4610.185.55.47
5210.185.55.48/2810.185.55.49 – 10.185.55.6210.185.55.63
5310.185.55.64/2810.185.55.65 – 10.185.55.7810.185.55.79
5410.185.55.80/2810.185.55.81 – 10.185.55.9410.185.55.95
5510.185.55.96/2810.185.55.97 – 10.185.55.11010.185.55.111
5610.185.55.112/2810.185.55.113 – 10.185.55.12610.185.55.127
5710.185.55.128/2810.185.55.129 – 10.185.55.14210.185.55.143
5810.185.55.144/2810.185.55.145 – 10.185.55.15810.185.55.159
5910.185.55.160/2810.185.55.161 – 10.185.55.17410.185.55.175
6010.185.55.176/2810.185.55.177 – 10.185.55.19010.185.55.191
6110.185.55.192/2810.185.55.193 – 10.185.55.20610.185.55.207
6210.185.55.208/2810.185.55.209 – 10.185.55.22210.185.55.223
6310.185.55.224/2810.185.55.225 – 10.185.55.23810.185.55.239
6410.185.55.240/2810.185.55.241 – 10.185.55.25410.185.55.255
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 →