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)10.131.56.0/22
network10.131.56.0/22
broadcast10.131.59.255
first host10.131.56.1
last host10.131.59.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.131.56.0/22
address00001010.10000011.00111000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10000011.00111000.00000000
broadcast00001010.10000011.00111011.11111111
green = network part, grey = host part
hex0x0a833800
decimal176371712
reverse dns0.56.131.10.in-addr.arpa
ipv4-mapped::ffff:a83:3800

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.131.56.0/2910.131.56.1 – 10.131.56.610.131.56.7
210.131.56.8/2910.131.56.9 – 10.131.56.1410.131.56.15
310.131.56.16/2910.131.56.17 – 10.131.56.2210.131.56.23
410.131.56.24/2910.131.56.25 – 10.131.56.3010.131.56.31
510.131.56.32/2910.131.56.33 – 10.131.56.3810.131.56.39
610.131.56.40/2910.131.56.41 – 10.131.56.4610.131.56.47
710.131.56.48/2910.131.56.49 – 10.131.56.5410.131.56.55
810.131.56.56/2910.131.56.57 – 10.131.56.6210.131.56.63
910.131.56.64/2910.131.56.65 – 10.131.56.7010.131.56.71
1010.131.56.72/2910.131.56.73 – 10.131.56.7810.131.56.79
1110.131.56.80/2910.131.56.81 – 10.131.56.8610.131.56.87
1210.131.56.88/2910.131.56.89 – 10.131.56.9410.131.56.95
1310.131.56.96/2910.131.56.97 – 10.131.56.10210.131.56.103
1410.131.56.104/2910.131.56.105 – 10.131.56.11010.131.56.111
1510.131.56.112/2910.131.56.113 – 10.131.56.11810.131.56.119
1610.131.56.120/2910.131.56.121 – 10.131.56.12610.131.56.127
1710.131.56.128/2910.131.56.129 – 10.131.56.13410.131.56.135
1810.131.56.136/2910.131.56.137 – 10.131.56.14210.131.56.143
1910.131.56.144/2910.131.56.145 – 10.131.56.15010.131.56.151
2010.131.56.152/2910.131.56.153 – 10.131.56.15810.131.56.159
2110.131.56.160/2910.131.56.161 – 10.131.56.16610.131.56.167
2210.131.56.168/2910.131.56.169 – 10.131.56.17410.131.56.175
2310.131.56.176/2910.131.56.177 – 10.131.56.18210.131.56.183
2410.131.56.184/2910.131.56.185 – 10.131.56.19010.131.56.191
2510.131.56.192/2910.131.56.193 – 10.131.56.19810.131.56.199
2610.131.56.200/2910.131.56.201 – 10.131.56.20610.131.56.207
2710.131.56.208/2910.131.56.209 – 10.131.56.21410.131.56.215
2810.131.56.216/2910.131.56.217 – 10.131.56.22210.131.56.223
2910.131.56.224/2910.131.56.225 – 10.131.56.23010.131.56.231
3010.131.56.232/2910.131.56.233 – 10.131.56.23810.131.56.239
3110.131.56.240/2910.131.56.241 – 10.131.56.24610.131.56.247
3210.131.56.248/2910.131.56.249 – 10.131.56.25410.131.56.255
3310.131.57.0/2910.131.57.1 – 10.131.57.610.131.57.7
3410.131.57.8/2910.131.57.9 – 10.131.57.1410.131.57.15
3510.131.57.16/2910.131.57.17 – 10.131.57.2210.131.57.23
3610.131.57.24/2910.131.57.25 – 10.131.57.3010.131.57.31
3710.131.57.32/2910.131.57.33 – 10.131.57.3810.131.57.39
3810.131.57.40/2910.131.57.41 – 10.131.57.4610.131.57.47
3910.131.57.48/2910.131.57.49 – 10.131.57.5410.131.57.55
4010.131.57.56/2910.131.57.57 – 10.131.57.6210.131.57.63
4110.131.57.64/2910.131.57.65 – 10.131.57.7010.131.57.71
4210.131.57.72/2910.131.57.73 – 10.131.57.7810.131.57.79
4310.131.57.80/2910.131.57.81 – 10.131.57.8610.131.57.87
4410.131.57.88/2910.131.57.89 – 10.131.57.9410.131.57.95
4510.131.57.96/2910.131.57.97 – 10.131.57.10210.131.57.103
4610.131.57.104/2910.131.57.105 – 10.131.57.11010.131.57.111
4710.131.57.112/2910.131.57.113 – 10.131.57.11810.131.57.119
4810.131.57.120/2910.131.57.121 – 10.131.57.12610.131.57.127
4910.131.57.128/2910.131.57.129 – 10.131.57.13410.131.57.135
5010.131.57.136/2910.131.57.137 – 10.131.57.14210.131.57.143
5110.131.57.144/2910.131.57.145 – 10.131.57.15010.131.57.151
5210.131.57.152/2910.131.57.153 – 10.131.57.15810.131.57.159
5310.131.57.160/2910.131.57.161 – 10.131.57.16610.131.57.167
5410.131.57.168/2910.131.57.169 – 10.131.57.17410.131.57.175
5510.131.57.176/2910.131.57.177 – 10.131.57.18210.131.57.183
5610.131.57.184/2910.131.57.185 – 10.131.57.19010.131.57.191
5710.131.57.192/2910.131.57.193 – 10.131.57.19810.131.57.199
5810.131.57.200/2910.131.57.201 – 10.131.57.20610.131.57.207
5910.131.57.208/2910.131.57.209 – 10.131.57.21410.131.57.215
6010.131.57.216/2910.131.57.217 – 10.131.57.22210.131.57.223
6110.131.57.224/2910.131.57.225 – 10.131.57.23010.131.57.231
6210.131.57.232/2910.131.57.233 – 10.131.57.23810.131.57.239
6310.131.57.240/2910.131.57.241 – 10.131.57.24610.131.57.247
6410.131.57.248/2910.131.57.249 – 10.131.57.25410.131.57.255
6510.131.58.0/2910.131.58.1 – 10.131.58.610.131.58.7
6610.131.58.8/2910.131.58.9 – 10.131.58.1410.131.58.15
6710.131.58.16/2910.131.58.17 – 10.131.58.2210.131.58.23
6810.131.58.24/2910.131.58.25 – 10.131.58.3010.131.58.31
6910.131.58.32/2910.131.58.33 – 10.131.58.3810.131.58.39
7010.131.58.40/2910.131.58.41 – 10.131.58.4610.131.58.47
7110.131.58.48/2910.131.58.49 – 10.131.58.5410.131.58.55
7210.131.58.56/2910.131.58.57 – 10.131.58.6210.131.58.63
7310.131.58.64/2910.131.58.65 – 10.131.58.7010.131.58.71
7410.131.58.72/2910.131.58.73 – 10.131.58.7810.131.58.79
7510.131.58.80/2910.131.58.81 – 10.131.58.8610.131.58.87
7610.131.58.88/2910.131.58.89 – 10.131.58.9410.131.58.95
7710.131.58.96/2910.131.58.97 – 10.131.58.10210.131.58.103
7810.131.58.104/2910.131.58.105 – 10.131.58.11010.131.58.111
7910.131.58.112/2910.131.58.113 – 10.131.58.11810.131.58.119
8010.131.58.120/2910.131.58.121 – 10.131.58.12610.131.58.127
8110.131.58.128/2910.131.58.129 – 10.131.58.13410.131.58.135
8210.131.58.136/2910.131.58.137 – 10.131.58.14210.131.58.143
8310.131.58.144/2910.131.58.145 – 10.131.58.15010.131.58.151
8410.131.58.152/2910.131.58.153 – 10.131.58.15810.131.58.159
8510.131.58.160/2910.131.58.161 – 10.131.58.16610.131.58.167
8610.131.58.168/2910.131.58.169 – 10.131.58.17410.131.58.175
8710.131.58.176/2910.131.58.177 – 10.131.58.18210.131.58.183
8810.131.58.184/2910.131.58.185 – 10.131.58.19010.131.58.191
8910.131.58.192/2910.131.58.193 – 10.131.58.19810.131.58.199
9010.131.58.200/2910.131.58.201 – 10.131.58.20610.131.58.207
9110.131.58.208/2910.131.58.209 – 10.131.58.21410.131.58.215
9210.131.58.216/2910.131.58.217 – 10.131.58.22210.131.58.223
9310.131.58.224/2910.131.58.225 – 10.131.58.23010.131.58.231
9410.131.58.232/2910.131.58.233 – 10.131.58.23810.131.58.239
9510.131.58.240/2910.131.58.241 – 10.131.58.24610.131.58.247
9610.131.58.248/2910.131.58.249 – 10.131.58.25410.131.58.255
9710.131.59.0/2910.131.59.1 – 10.131.59.610.131.59.7
9810.131.59.8/2910.131.59.9 – 10.131.59.1410.131.59.15
9910.131.59.16/2910.131.59.17 – 10.131.59.2210.131.59.23
10010.131.59.24/2910.131.59.25 – 10.131.59.3010.131.59.31
10110.131.59.32/2910.131.59.33 – 10.131.59.3810.131.59.39
10210.131.59.40/2910.131.59.41 – 10.131.59.4610.131.59.47
10310.131.59.48/2910.131.59.49 – 10.131.59.5410.131.59.55
10410.131.59.56/2910.131.59.57 – 10.131.59.6210.131.59.63
10510.131.59.64/2910.131.59.65 – 10.131.59.7010.131.59.71
10610.131.59.72/2910.131.59.73 – 10.131.59.7810.131.59.79
10710.131.59.80/2910.131.59.81 – 10.131.59.8610.131.59.87
10810.131.59.88/2910.131.59.89 – 10.131.59.9410.131.59.95
10910.131.59.96/2910.131.59.97 – 10.131.59.10210.131.59.103
11010.131.59.104/2910.131.59.105 – 10.131.59.11010.131.59.111
11110.131.59.112/2910.131.59.113 – 10.131.59.11810.131.59.119
11210.131.59.120/2910.131.59.121 – 10.131.59.12610.131.59.127
11310.131.59.128/2910.131.59.129 – 10.131.59.13410.131.59.135
11410.131.59.136/2910.131.59.137 – 10.131.59.14210.131.59.143
11510.131.59.144/2910.131.59.145 – 10.131.59.15010.131.59.151
11610.131.59.152/2910.131.59.153 – 10.131.59.15810.131.59.159
11710.131.59.160/2910.131.59.161 – 10.131.59.16610.131.59.167
11810.131.59.168/2910.131.59.169 – 10.131.59.17410.131.59.175
11910.131.59.176/2910.131.59.177 – 10.131.59.18210.131.59.183
12010.131.59.184/2910.131.59.185 – 10.131.59.19010.131.59.191
12110.131.59.192/2910.131.59.193 – 10.131.59.19810.131.59.199
12210.131.59.200/2910.131.59.201 – 10.131.59.20610.131.59.207
12310.131.59.208/2910.131.59.209 – 10.131.59.21410.131.59.215
12410.131.59.216/2910.131.59.217 – 10.131.59.22210.131.59.223
12510.131.59.224/2910.131.59.225 – 10.131.59.23010.131.59.231
12610.131.59.232/2910.131.59.233 – 10.131.59.23810.131.59.239
12710.131.59.240/2910.131.59.241 – 10.131.59.24610.131.59.247
12810.131.59.248/2910.131.59.249 – 10.131.59.25410.131.59.255
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 →