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)10.65.84.0/22
network10.65.84.0/22
broadcast10.65.87.255
first host10.65.84.1
last host10.65.87.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.65.84.0/22
address00001010.01000001.01010100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01000001.01010100.00000000
broadcast00001010.01000001.01010111.11111111
green = network part, grey = host part
hex0x0a415400
decimal172053504
reverse dns0.84.65.10.in-addr.arpa
ipv4-mapped::ffff:a41:5400

/22 split into /28 · 64 subnets

close ×
#networkhost rangebroadcast
110.65.84.0/2810.65.84.1 – 10.65.84.1410.65.84.15
210.65.84.16/2810.65.84.17 – 10.65.84.3010.65.84.31
310.65.84.32/2810.65.84.33 – 10.65.84.4610.65.84.47
410.65.84.48/2810.65.84.49 – 10.65.84.6210.65.84.63
510.65.84.64/2810.65.84.65 – 10.65.84.7810.65.84.79
610.65.84.80/2810.65.84.81 – 10.65.84.9410.65.84.95
710.65.84.96/2810.65.84.97 – 10.65.84.11010.65.84.111
810.65.84.112/2810.65.84.113 – 10.65.84.12610.65.84.127
910.65.84.128/2810.65.84.129 – 10.65.84.14210.65.84.143
1010.65.84.144/2810.65.84.145 – 10.65.84.15810.65.84.159
1110.65.84.160/2810.65.84.161 – 10.65.84.17410.65.84.175
1210.65.84.176/2810.65.84.177 – 10.65.84.19010.65.84.191
1310.65.84.192/2810.65.84.193 – 10.65.84.20610.65.84.207
1410.65.84.208/2810.65.84.209 – 10.65.84.22210.65.84.223
1510.65.84.224/2810.65.84.225 – 10.65.84.23810.65.84.239
1610.65.84.240/2810.65.84.241 – 10.65.84.25410.65.84.255
1710.65.85.0/2810.65.85.1 – 10.65.85.1410.65.85.15
1810.65.85.16/2810.65.85.17 – 10.65.85.3010.65.85.31
1910.65.85.32/2810.65.85.33 – 10.65.85.4610.65.85.47
2010.65.85.48/2810.65.85.49 – 10.65.85.6210.65.85.63
2110.65.85.64/2810.65.85.65 – 10.65.85.7810.65.85.79
2210.65.85.80/2810.65.85.81 – 10.65.85.9410.65.85.95
2310.65.85.96/2810.65.85.97 – 10.65.85.11010.65.85.111
2410.65.85.112/2810.65.85.113 – 10.65.85.12610.65.85.127
2510.65.85.128/2810.65.85.129 – 10.65.85.14210.65.85.143
2610.65.85.144/2810.65.85.145 – 10.65.85.15810.65.85.159
2710.65.85.160/2810.65.85.161 – 10.65.85.17410.65.85.175
2810.65.85.176/2810.65.85.177 – 10.65.85.19010.65.85.191
2910.65.85.192/2810.65.85.193 – 10.65.85.20610.65.85.207
3010.65.85.208/2810.65.85.209 – 10.65.85.22210.65.85.223
3110.65.85.224/2810.65.85.225 – 10.65.85.23810.65.85.239
3210.65.85.240/2810.65.85.241 – 10.65.85.25410.65.85.255
3310.65.86.0/2810.65.86.1 – 10.65.86.1410.65.86.15
3410.65.86.16/2810.65.86.17 – 10.65.86.3010.65.86.31
3510.65.86.32/2810.65.86.33 – 10.65.86.4610.65.86.47
3610.65.86.48/2810.65.86.49 – 10.65.86.6210.65.86.63
3710.65.86.64/2810.65.86.65 – 10.65.86.7810.65.86.79
3810.65.86.80/2810.65.86.81 – 10.65.86.9410.65.86.95
3910.65.86.96/2810.65.86.97 – 10.65.86.11010.65.86.111
4010.65.86.112/2810.65.86.113 – 10.65.86.12610.65.86.127
4110.65.86.128/2810.65.86.129 – 10.65.86.14210.65.86.143
4210.65.86.144/2810.65.86.145 – 10.65.86.15810.65.86.159
4310.65.86.160/2810.65.86.161 – 10.65.86.17410.65.86.175
4410.65.86.176/2810.65.86.177 – 10.65.86.19010.65.86.191
4510.65.86.192/2810.65.86.193 – 10.65.86.20610.65.86.207
4610.65.86.208/2810.65.86.209 – 10.65.86.22210.65.86.223
4710.65.86.224/2810.65.86.225 – 10.65.86.23810.65.86.239
4810.65.86.240/2810.65.86.241 – 10.65.86.25410.65.86.255
4910.65.87.0/2810.65.87.1 – 10.65.87.1410.65.87.15
5010.65.87.16/2810.65.87.17 – 10.65.87.3010.65.87.31
5110.65.87.32/2810.65.87.33 – 10.65.87.4610.65.87.47
5210.65.87.48/2810.65.87.49 – 10.65.87.6210.65.87.63
5310.65.87.64/2810.65.87.65 – 10.65.87.7810.65.87.79
5410.65.87.80/2810.65.87.81 – 10.65.87.9410.65.87.95
5510.65.87.96/2810.65.87.97 – 10.65.87.11010.65.87.111
5610.65.87.112/2810.65.87.113 – 10.65.87.12610.65.87.127
5710.65.87.128/2810.65.87.129 – 10.65.87.14210.65.87.143
5810.65.87.144/2810.65.87.145 – 10.65.87.15810.65.87.159
5910.65.87.160/2810.65.87.161 – 10.65.87.17410.65.87.175
6010.65.87.176/2810.65.87.177 – 10.65.87.19010.65.87.191
6110.65.87.192/2810.65.87.193 – 10.65.87.20610.65.87.207
6210.65.87.208/2810.65.87.209 – 10.65.87.22210.65.87.223
6310.65.87.224/2810.65.87.225 – 10.65.87.23810.65.87.239
6410.65.87.240/2810.65.87.241 – 10.65.87.25410.65.87.255
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 →