ip
ipku.in

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)10.149.252.0/22
network10.149.252.0/22
broadcast10.149.255.255
first host10.149.252.1
last host10.149.255.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.149.252.0/22
address00001010.10010101.11111100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10010101.11111100.00000000
broadcast00001010.10010101.11111111.11111111
green = network part, grey = host part
hex0x0a95fc00
decimal177601536
reverse dns0.252.149.10.in-addr.arpa
ipv4-mapped::ffff:a95:fc00

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.149.252.0/2810.149.252.1 – 10.149.252.1410.149.252.15
210.149.252.16/2810.149.252.17 – 10.149.252.3010.149.252.31
310.149.252.32/2810.149.252.33 – 10.149.252.4610.149.252.47
410.149.252.48/2810.149.252.49 – 10.149.252.6210.149.252.63
510.149.252.64/2810.149.252.65 – 10.149.252.7810.149.252.79
610.149.252.80/2810.149.252.81 – 10.149.252.9410.149.252.95
710.149.252.96/2810.149.252.97 – 10.149.252.11010.149.252.111
810.149.252.112/2810.149.252.113 – 10.149.252.12610.149.252.127
910.149.252.128/2810.149.252.129 – 10.149.252.14210.149.252.143
1010.149.252.144/2810.149.252.145 – 10.149.252.15810.149.252.159
1110.149.252.160/2810.149.252.161 – 10.149.252.17410.149.252.175
1210.149.252.176/2810.149.252.177 – 10.149.252.19010.149.252.191
1310.149.252.192/2810.149.252.193 – 10.149.252.20610.149.252.207
1410.149.252.208/2810.149.252.209 – 10.149.252.22210.149.252.223
1510.149.252.224/2810.149.252.225 – 10.149.252.23810.149.252.239
1610.149.252.240/2810.149.252.241 – 10.149.252.25410.149.252.255
1710.149.253.0/2810.149.253.1 – 10.149.253.1410.149.253.15
1810.149.253.16/2810.149.253.17 – 10.149.253.3010.149.253.31
1910.149.253.32/2810.149.253.33 – 10.149.253.4610.149.253.47
2010.149.253.48/2810.149.253.49 – 10.149.253.6210.149.253.63
2110.149.253.64/2810.149.253.65 – 10.149.253.7810.149.253.79
2210.149.253.80/2810.149.253.81 – 10.149.253.9410.149.253.95
2310.149.253.96/2810.149.253.97 – 10.149.253.11010.149.253.111
2410.149.253.112/2810.149.253.113 – 10.149.253.12610.149.253.127
2510.149.253.128/2810.149.253.129 – 10.149.253.14210.149.253.143
2610.149.253.144/2810.149.253.145 – 10.149.253.15810.149.253.159
2710.149.253.160/2810.149.253.161 – 10.149.253.17410.149.253.175
2810.149.253.176/2810.149.253.177 – 10.149.253.19010.149.253.191
2910.149.253.192/2810.149.253.193 – 10.149.253.20610.149.253.207
3010.149.253.208/2810.149.253.209 – 10.149.253.22210.149.253.223
3110.149.253.224/2810.149.253.225 – 10.149.253.23810.149.253.239
3210.149.253.240/2810.149.253.241 – 10.149.253.25410.149.253.255
3310.149.254.0/2810.149.254.1 – 10.149.254.1410.149.254.15
3410.149.254.16/2810.149.254.17 – 10.149.254.3010.149.254.31
3510.149.254.32/2810.149.254.33 – 10.149.254.4610.149.254.47
3610.149.254.48/2810.149.254.49 – 10.149.254.6210.149.254.63
3710.149.254.64/2810.149.254.65 – 10.149.254.7810.149.254.79
3810.149.254.80/2810.149.254.81 – 10.149.254.9410.149.254.95
3910.149.254.96/2810.149.254.97 – 10.149.254.11010.149.254.111
4010.149.254.112/2810.149.254.113 – 10.149.254.12610.149.254.127
4110.149.254.128/2810.149.254.129 – 10.149.254.14210.149.254.143
4210.149.254.144/2810.149.254.145 – 10.149.254.15810.149.254.159
4310.149.254.160/2810.149.254.161 – 10.149.254.17410.149.254.175
4410.149.254.176/2810.149.254.177 – 10.149.254.19010.149.254.191
4510.149.254.192/2810.149.254.193 – 10.149.254.20610.149.254.207
4610.149.254.208/2810.149.254.209 – 10.149.254.22210.149.254.223
4710.149.254.224/2810.149.254.225 – 10.149.254.23810.149.254.239
4810.149.254.240/2810.149.254.241 – 10.149.254.25410.149.254.255
4910.149.255.0/2810.149.255.1 – 10.149.255.1410.149.255.15
5010.149.255.16/2810.149.255.17 – 10.149.255.3010.149.255.31
5110.149.255.32/2810.149.255.33 – 10.149.255.4610.149.255.47
5210.149.255.48/2810.149.255.49 – 10.149.255.6210.149.255.63
5310.149.255.64/2810.149.255.65 – 10.149.255.7810.149.255.79
5410.149.255.80/2810.149.255.81 – 10.149.255.9410.149.255.95
5510.149.255.96/2810.149.255.97 – 10.149.255.11010.149.255.111
5610.149.255.112/2810.149.255.113 – 10.149.255.12610.149.255.127
5710.149.255.128/2810.149.255.129 – 10.149.255.14210.149.255.143
5810.149.255.144/2810.149.255.145 – 10.149.255.15810.149.255.159
5910.149.255.160/2810.149.255.161 – 10.149.255.17410.149.255.175
6010.149.255.176/2810.149.255.177 – 10.149.255.19010.149.255.191
6110.149.255.192/2810.149.255.193 – 10.149.255.20610.149.255.207
6210.149.255.208/2810.149.255.209 – 10.149.255.22210.149.255.223
6310.149.255.224/2810.149.255.225 – 10.149.255.23810.149.255.239
6410.149.255.240/2810.149.255.241 – 10.149.255.25410.149.255.255
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 →