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)10.2.140.0/22
network10.2.140.0/22
broadcast10.2.143.255
first host10.2.140.1
last host10.2.143.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.2.140.0/22
address00001010.00000010.10001100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00000010.10001100.00000000
broadcast00001010.00000010.10001111.11111111
green = network part, grey = host part
hex0x0a028c00
decimal167939072
reverse dns0.140.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:8c00

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.140.0/2910.2.140.1 – 10.2.140.610.2.140.7
210.2.140.8/2910.2.140.9 – 10.2.140.1410.2.140.15
310.2.140.16/2910.2.140.17 – 10.2.140.2210.2.140.23
410.2.140.24/2910.2.140.25 – 10.2.140.3010.2.140.31
510.2.140.32/2910.2.140.33 – 10.2.140.3810.2.140.39
610.2.140.40/2910.2.140.41 – 10.2.140.4610.2.140.47
710.2.140.48/2910.2.140.49 – 10.2.140.5410.2.140.55
810.2.140.56/2910.2.140.57 – 10.2.140.6210.2.140.63
910.2.140.64/2910.2.140.65 – 10.2.140.7010.2.140.71
1010.2.140.72/2910.2.140.73 – 10.2.140.7810.2.140.79
1110.2.140.80/2910.2.140.81 – 10.2.140.8610.2.140.87
1210.2.140.88/2910.2.140.89 – 10.2.140.9410.2.140.95
1310.2.140.96/2910.2.140.97 – 10.2.140.10210.2.140.103
1410.2.140.104/2910.2.140.105 – 10.2.140.11010.2.140.111
1510.2.140.112/2910.2.140.113 – 10.2.140.11810.2.140.119
1610.2.140.120/2910.2.140.121 – 10.2.140.12610.2.140.127
1710.2.140.128/2910.2.140.129 – 10.2.140.13410.2.140.135
1810.2.140.136/2910.2.140.137 – 10.2.140.14210.2.140.143
1910.2.140.144/2910.2.140.145 – 10.2.140.15010.2.140.151
2010.2.140.152/2910.2.140.153 – 10.2.140.15810.2.140.159
2110.2.140.160/2910.2.140.161 – 10.2.140.16610.2.140.167
2210.2.140.168/2910.2.140.169 – 10.2.140.17410.2.140.175
2310.2.140.176/2910.2.140.177 – 10.2.140.18210.2.140.183
2410.2.140.184/2910.2.140.185 – 10.2.140.19010.2.140.191
2510.2.140.192/2910.2.140.193 – 10.2.140.19810.2.140.199
2610.2.140.200/2910.2.140.201 – 10.2.140.20610.2.140.207
2710.2.140.208/2910.2.140.209 – 10.2.140.21410.2.140.215
2810.2.140.216/2910.2.140.217 – 10.2.140.22210.2.140.223
2910.2.140.224/2910.2.140.225 – 10.2.140.23010.2.140.231
3010.2.140.232/2910.2.140.233 – 10.2.140.23810.2.140.239
3110.2.140.240/2910.2.140.241 – 10.2.140.24610.2.140.247
3210.2.140.248/2910.2.140.249 – 10.2.140.25410.2.140.255
3310.2.141.0/2910.2.141.1 – 10.2.141.610.2.141.7
3410.2.141.8/2910.2.141.9 – 10.2.141.1410.2.141.15
3510.2.141.16/2910.2.141.17 – 10.2.141.2210.2.141.23
3610.2.141.24/2910.2.141.25 – 10.2.141.3010.2.141.31
3710.2.141.32/2910.2.141.33 – 10.2.141.3810.2.141.39
3810.2.141.40/2910.2.141.41 – 10.2.141.4610.2.141.47
3910.2.141.48/2910.2.141.49 – 10.2.141.5410.2.141.55
4010.2.141.56/2910.2.141.57 – 10.2.141.6210.2.141.63
4110.2.141.64/2910.2.141.65 – 10.2.141.7010.2.141.71
4210.2.141.72/2910.2.141.73 – 10.2.141.7810.2.141.79
4310.2.141.80/2910.2.141.81 – 10.2.141.8610.2.141.87
4410.2.141.88/2910.2.141.89 – 10.2.141.9410.2.141.95
4510.2.141.96/2910.2.141.97 – 10.2.141.10210.2.141.103
4610.2.141.104/2910.2.141.105 – 10.2.141.11010.2.141.111
4710.2.141.112/2910.2.141.113 – 10.2.141.11810.2.141.119
4810.2.141.120/2910.2.141.121 – 10.2.141.12610.2.141.127
4910.2.141.128/2910.2.141.129 – 10.2.141.13410.2.141.135
5010.2.141.136/2910.2.141.137 – 10.2.141.14210.2.141.143
5110.2.141.144/2910.2.141.145 – 10.2.141.15010.2.141.151
5210.2.141.152/2910.2.141.153 – 10.2.141.15810.2.141.159
5310.2.141.160/2910.2.141.161 – 10.2.141.16610.2.141.167
5410.2.141.168/2910.2.141.169 – 10.2.141.17410.2.141.175
5510.2.141.176/2910.2.141.177 – 10.2.141.18210.2.141.183
5610.2.141.184/2910.2.141.185 – 10.2.141.19010.2.141.191
5710.2.141.192/2910.2.141.193 – 10.2.141.19810.2.141.199
5810.2.141.200/2910.2.141.201 – 10.2.141.20610.2.141.207
5910.2.141.208/2910.2.141.209 – 10.2.141.21410.2.141.215
6010.2.141.216/2910.2.141.217 – 10.2.141.22210.2.141.223
6110.2.141.224/2910.2.141.225 – 10.2.141.23010.2.141.231
6210.2.141.232/2910.2.141.233 – 10.2.141.23810.2.141.239
6310.2.141.240/2910.2.141.241 – 10.2.141.24610.2.141.247
6410.2.141.248/2910.2.141.249 – 10.2.141.25410.2.141.255
6510.2.142.0/2910.2.142.1 – 10.2.142.610.2.142.7
6610.2.142.8/2910.2.142.9 – 10.2.142.1410.2.142.15
6710.2.142.16/2910.2.142.17 – 10.2.142.2210.2.142.23
6810.2.142.24/2910.2.142.25 – 10.2.142.3010.2.142.31
6910.2.142.32/2910.2.142.33 – 10.2.142.3810.2.142.39
7010.2.142.40/2910.2.142.41 – 10.2.142.4610.2.142.47
7110.2.142.48/2910.2.142.49 – 10.2.142.5410.2.142.55
7210.2.142.56/2910.2.142.57 – 10.2.142.6210.2.142.63
7310.2.142.64/2910.2.142.65 – 10.2.142.7010.2.142.71
7410.2.142.72/2910.2.142.73 – 10.2.142.7810.2.142.79
7510.2.142.80/2910.2.142.81 – 10.2.142.8610.2.142.87
7610.2.142.88/2910.2.142.89 – 10.2.142.9410.2.142.95
7710.2.142.96/2910.2.142.97 – 10.2.142.10210.2.142.103
7810.2.142.104/2910.2.142.105 – 10.2.142.11010.2.142.111
7910.2.142.112/2910.2.142.113 – 10.2.142.11810.2.142.119
8010.2.142.120/2910.2.142.121 – 10.2.142.12610.2.142.127
8110.2.142.128/2910.2.142.129 – 10.2.142.13410.2.142.135
8210.2.142.136/2910.2.142.137 – 10.2.142.14210.2.142.143
8310.2.142.144/2910.2.142.145 – 10.2.142.15010.2.142.151
8410.2.142.152/2910.2.142.153 – 10.2.142.15810.2.142.159
8510.2.142.160/2910.2.142.161 – 10.2.142.16610.2.142.167
8610.2.142.168/2910.2.142.169 – 10.2.142.17410.2.142.175
8710.2.142.176/2910.2.142.177 – 10.2.142.18210.2.142.183
8810.2.142.184/2910.2.142.185 – 10.2.142.19010.2.142.191
8910.2.142.192/2910.2.142.193 – 10.2.142.19810.2.142.199
9010.2.142.200/2910.2.142.201 – 10.2.142.20610.2.142.207
9110.2.142.208/2910.2.142.209 – 10.2.142.21410.2.142.215
9210.2.142.216/2910.2.142.217 – 10.2.142.22210.2.142.223
9310.2.142.224/2910.2.142.225 – 10.2.142.23010.2.142.231
9410.2.142.232/2910.2.142.233 – 10.2.142.23810.2.142.239
9510.2.142.240/2910.2.142.241 – 10.2.142.24610.2.142.247
9610.2.142.248/2910.2.142.249 – 10.2.142.25410.2.142.255
9710.2.143.0/2910.2.143.1 – 10.2.143.610.2.143.7
9810.2.143.8/2910.2.143.9 – 10.2.143.1410.2.143.15
9910.2.143.16/2910.2.143.17 – 10.2.143.2210.2.143.23
10010.2.143.24/2910.2.143.25 – 10.2.143.3010.2.143.31
10110.2.143.32/2910.2.143.33 – 10.2.143.3810.2.143.39
10210.2.143.40/2910.2.143.41 – 10.2.143.4610.2.143.47
10310.2.143.48/2910.2.143.49 – 10.2.143.5410.2.143.55
10410.2.143.56/2910.2.143.57 – 10.2.143.6210.2.143.63
10510.2.143.64/2910.2.143.65 – 10.2.143.7010.2.143.71
10610.2.143.72/2910.2.143.73 – 10.2.143.7810.2.143.79
10710.2.143.80/2910.2.143.81 – 10.2.143.8610.2.143.87
10810.2.143.88/2910.2.143.89 – 10.2.143.9410.2.143.95
10910.2.143.96/2910.2.143.97 – 10.2.143.10210.2.143.103
11010.2.143.104/2910.2.143.105 – 10.2.143.11010.2.143.111
11110.2.143.112/2910.2.143.113 – 10.2.143.11810.2.143.119
11210.2.143.120/2910.2.143.121 – 10.2.143.12610.2.143.127
11310.2.143.128/2910.2.143.129 – 10.2.143.13410.2.143.135
11410.2.143.136/2910.2.143.137 – 10.2.143.14210.2.143.143
11510.2.143.144/2910.2.143.145 – 10.2.143.15010.2.143.151
11610.2.143.152/2910.2.143.153 – 10.2.143.15810.2.143.159
11710.2.143.160/2910.2.143.161 – 10.2.143.16610.2.143.167
11810.2.143.168/2910.2.143.169 – 10.2.143.17410.2.143.175
11910.2.143.176/2910.2.143.177 – 10.2.143.18210.2.143.183
12010.2.143.184/2910.2.143.185 – 10.2.143.19010.2.143.191
12110.2.143.192/2910.2.143.193 – 10.2.143.19810.2.143.199
12210.2.143.200/2910.2.143.201 – 10.2.143.20610.2.143.207
12310.2.143.208/2910.2.143.209 – 10.2.143.21410.2.143.215
12410.2.143.216/2910.2.143.217 – 10.2.143.22210.2.143.223
12510.2.143.224/2910.2.143.225 – 10.2.143.23010.2.143.231
12610.2.143.232/2910.2.143.233 – 10.2.143.23810.2.143.239
12710.2.143.240/2910.2.143.241 – 10.2.143.24610.2.143.247
12810.2.143.248/2910.2.143.249 – 10.2.143.25410.2.143.255
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 →