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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)10.45.52.0/22
network10.45.52.0/22
broadcast10.45.55.255
first host10.45.52.1
last host10.45.55.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.45.52.0/22
address00001010.00101101.00110100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00101101.00110100.00000000
broadcast00001010.00101101.00110111.11111111
green = network part, grey = host part
hex0x0a2d3400
decimal170734592
reverse dns0.52.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:3400

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.45.52.0/2810.45.52.1 – 10.45.52.1410.45.52.15
210.45.52.16/2810.45.52.17 – 10.45.52.3010.45.52.31
310.45.52.32/2810.45.52.33 – 10.45.52.4610.45.52.47
410.45.52.48/2810.45.52.49 – 10.45.52.6210.45.52.63
510.45.52.64/2810.45.52.65 – 10.45.52.7810.45.52.79
610.45.52.80/2810.45.52.81 – 10.45.52.9410.45.52.95
710.45.52.96/2810.45.52.97 – 10.45.52.11010.45.52.111
810.45.52.112/2810.45.52.113 – 10.45.52.12610.45.52.127
910.45.52.128/2810.45.52.129 – 10.45.52.14210.45.52.143
1010.45.52.144/2810.45.52.145 – 10.45.52.15810.45.52.159
1110.45.52.160/2810.45.52.161 – 10.45.52.17410.45.52.175
1210.45.52.176/2810.45.52.177 – 10.45.52.19010.45.52.191
1310.45.52.192/2810.45.52.193 – 10.45.52.20610.45.52.207
1410.45.52.208/2810.45.52.209 – 10.45.52.22210.45.52.223
1510.45.52.224/2810.45.52.225 – 10.45.52.23810.45.52.239
1610.45.52.240/2810.45.52.241 – 10.45.52.25410.45.52.255
1710.45.53.0/2810.45.53.1 – 10.45.53.1410.45.53.15
1810.45.53.16/2810.45.53.17 – 10.45.53.3010.45.53.31
1910.45.53.32/2810.45.53.33 – 10.45.53.4610.45.53.47
2010.45.53.48/2810.45.53.49 – 10.45.53.6210.45.53.63
2110.45.53.64/2810.45.53.65 – 10.45.53.7810.45.53.79
2210.45.53.80/2810.45.53.81 – 10.45.53.9410.45.53.95
2310.45.53.96/2810.45.53.97 – 10.45.53.11010.45.53.111
2410.45.53.112/2810.45.53.113 – 10.45.53.12610.45.53.127
2510.45.53.128/2810.45.53.129 – 10.45.53.14210.45.53.143
2610.45.53.144/2810.45.53.145 – 10.45.53.15810.45.53.159
2710.45.53.160/2810.45.53.161 – 10.45.53.17410.45.53.175
2810.45.53.176/2810.45.53.177 – 10.45.53.19010.45.53.191
2910.45.53.192/2810.45.53.193 – 10.45.53.20610.45.53.207
3010.45.53.208/2810.45.53.209 – 10.45.53.22210.45.53.223
3110.45.53.224/2810.45.53.225 – 10.45.53.23810.45.53.239
3210.45.53.240/2810.45.53.241 – 10.45.53.25410.45.53.255
3310.45.54.0/2810.45.54.1 – 10.45.54.1410.45.54.15
3410.45.54.16/2810.45.54.17 – 10.45.54.3010.45.54.31
3510.45.54.32/2810.45.54.33 – 10.45.54.4610.45.54.47
3610.45.54.48/2810.45.54.49 – 10.45.54.6210.45.54.63
3710.45.54.64/2810.45.54.65 – 10.45.54.7810.45.54.79
3810.45.54.80/2810.45.54.81 – 10.45.54.9410.45.54.95
3910.45.54.96/2810.45.54.97 – 10.45.54.11010.45.54.111
4010.45.54.112/2810.45.54.113 – 10.45.54.12610.45.54.127
4110.45.54.128/2810.45.54.129 – 10.45.54.14210.45.54.143
4210.45.54.144/2810.45.54.145 – 10.45.54.15810.45.54.159
4310.45.54.160/2810.45.54.161 – 10.45.54.17410.45.54.175
4410.45.54.176/2810.45.54.177 – 10.45.54.19010.45.54.191
4510.45.54.192/2810.45.54.193 – 10.45.54.20610.45.54.207
4610.45.54.208/2810.45.54.209 – 10.45.54.22210.45.54.223
4710.45.54.224/2810.45.54.225 – 10.45.54.23810.45.54.239
4810.45.54.240/2810.45.54.241 – 10.45.54.25410.45.54.255
4910.45.55.0/2810.45.55.1 – 10.45.55.1410.45.55.15
5010.45.55.16/2810.45.55.17 – 10.45.55.3010.45.55.31
5110.45.55.32/2810.45.55.33 – 10.45.55.4610.45.55.47
5210.45.55.48/2810.45.55.49 – 10.45.55.6210.45.55.63
5310.45.55.64/2810.45.55.65 – 10.45.55.7810.45.55.79
5410.45.55.80/2810.45.55.81 – 10.45.55.9410.45.55.95
5510.45.55.96/2810.45.55.97 – 10.45.55.11010.45.55.111
5610.45.55.112/2810.45.55.113 – 10.45.55.12610.45.55.127
5710.45.55.128/2810.45.55.129 – 10.45.55.14210.45.55.143
5810.45.55.144/2810.45.55.145 – 10.45.55.15810.45.55.159
5910.45.55.160/2810.45.55.161 – 10.45.55.17410.45.55.175
6010.45.55.176/2810.45.55.177 – 10.45.55.19010.45.55.191
6110.45.55.192/2810.45.55.193 – 10.45.55.20610.45.55.207
6210.45.55.208/2810.45.55.209 – 10.45.55.22210.45.55.223
6310.45.55.224/2810.45.55.225 – 10.45.55.23810.45.55.239
6410.45.55.240/2810.45.55.241 – 10.45.55.25410.45.55.255
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 →