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)10.31.8.0/22
network10.31.8.0/22
broadcast10.31.11.255
first host10.31.8.1
last host10.31.11.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.31.8.0/22
address00001010.00011111.00001000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00011111.00001000.00000000
broadcast00001010.00011111.00001011.11111111
green = network part, grey = host part
hex0x0a1f0800
decimal169805824
reverse dns0.8.31.10.in-addr.arpa
ipv4-mapped::ffff:a1f:800

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.31.8.0/2910.31.8.1 – 10.31.8.610.31.8.7
210.31.8.8/2910.31.8.9 – 10.31.8.1410.31.8.15
310.31.8.16/2910.31.8.17 – 10.31.8.2210.31.8.23
410.31.8.24/2910.31.8.25 – 10.31.8.3010.31.8.31
510.31.8.32/2910.31.8.33 – 10.31.8.3810.31.8.39
610.31.8.40/2910.31.8.41 – 10.31.8.4610.31.8.47
710.31.8.48/2910.31.8.49 – 10.31.8.5410.31.8.55
810.31.8.56/2910.31.8.57 – 10.31.8.6210.31.8.63
910.31.8.64/2910.31.8.65 – 10.31.8.7010.31.8.71
1010.31.8.72/2910.31.8.73 – 10.31.8.7810.31.8.79
1110.31.8.80/2910.31.8.81 – 10.31.8.8610.31.8.87
1210.31.8.88/2910.31.8.89 – 10.31.8.9410.31.8.95
1310.31.8.96/2910.31.8.97 – 10.31.8.10210.31.8.103
1410.31.8.104/2910.31.8.105 – 10.31.8.11010.31.8.111
1510.31.8.112/2910.31.8.113 – 10.31.8.11810.31.8.119
1610.31.8.120/2910.31.8.121 – 10.31.8.12610.31.8.127
1710.31.8.128/2910.31.8.129 – 10.31.8.13410.31.8.135
1810.31.8.136/2910.31.8.137 – 10.31.8.14210.31.8.143
1910.31.8.144/2910.31.8.145 – 10.31.8.15010.31.8.151
2010.31.8.152/2910.31.8.153 – 10.31.8.15810.31.8.159
2110.31.8.160/2910.31.8.161 – 10.31.8.16610.31.8.167
2210.31.8.168/2910.31.8.169 – 10.31.8.17410.31.8.175
2310.31.8.176/2910.31.8.177 – 10.31.8.18210.31.8.183
2410.31.8.184/2910.31.8.185 – 10.31.8.19010.31.8.191
2510.31.8.192/2910.31.8.193 – 10.31.8.19810.31.8.199
2610.31.8.200/2910.31.8.201 – 10.31.8.20610.31.8.207
2710.31.8.208/2910.31.8.209 – 10.31.8.21410.31.8.215
2810.31.8.216/2910.31.8.217 – 10.31.8.22210.31.8.223
2910.31.8.224/2910.31.8.225 – 10.31.8.23010.31.8.231
3010.31.8.232/2910.31.8.233 – 10.31.8.23810.31.8.239
3110.31.8.240/2910.31.8.241 – 10.31.8.24610.31.8.247
3210.31.8.248/2910.31.8.249 – 10.31.8.25410.31.8.255
3310.31.9.0/2910.31.9.1 – 10.31.9.610.31.9.7
3410.31.9.8/2910.31.9.9 – 10.31.9.1410.31.9.15
3510.31.9.16/2910.31.9.17 – 10.31.9.2210.31.9.23
3610.31.9.24/2910.31.9.25 – 10.31.9.3010.31.9.31
3710.31.9.32/2910.31.9.33 – 10.31.9.3810.31.9.39
3810.31.9.40/2910.31.9.41 – 10.31.9.4610.31.9.47
3910.31.9.48/2910.31.9.49 – 10.31.9.5410.31.9.55
4010.31.9.56/2910.31.9.57 – 10.31.9.6210.31.9.63
4110.31.9.64/2910.31.9.65 – 10.31.9.7010.31.9.71
4210.31.9.72/2910.31.9.73 – 10.31.9.7810.31.9.79
4310.31.9.80/2910.31.9.81 – 10.31.9.8610.31.9.87
4410.31.9.88/2910.31.9.89 – 10.31.9.9410.31.9.95
4510.31.9.96/2910.31.9.97 – 10.31.9.10210.31.9.103
4610.31.9.104/2910.31.9.105 – 10.31.9.11010.31.9.111
4710.31.9.112/2910.31.9.113 – 10.31.9.11810.31.9.119
4810.31.9.120/2910.31.9.121 – 10.31.9.12610.31.9.127
4910.31.9.128/2910.31.9.129 – 10.31.9.13410.31.9.135
5010.31.9.136/2910.31.9.137 – 10.31.9.14210.31.9.143
5110.31.9.144/2910.31.9.145 – 10.31.9.15010.31.9.151
5210.31.9.152/2910.31.9.153 – 10.31.9.15810.31.9.159
5310.31.9.160/2910.31.9.161 – 10.31.9.16610.31.9.167
5410.31.9.168/2910.31.9.169 – 10.31.9.17410.31.9.175
5510.31.9.176/2910.31.9.177 – 10.31.9.18210.31.9.183
5610.31.9.184/2910.31.9.185 – 10.31.9.19010.31.9.191
5710.31.9.192/2910.31.9.193 – 10.31.9.19810.31.9.199
5810.31.9.200/2910.31.9.201 – 10.31.9.20610.31.9.207
5910.31.9.208/2910.31.9.209 – 10.31.9.21410.31.9.215
6010.31.9.216/2910.31.9.217 – 10.31.9.22210.31.9.223
6110.31.9.224/2910.31.9.225 – 10.31.9.23010.31.9.231
6210.31.9.232/2910.31.9.233 – 10.31.9.23810.31.9.239
6310.31.9.240/2910.31.9.241 – 10.31.9.24610.31.9.247
6410.31.9.248/2910.31.9.249 – 10.31.9.25410.31.9.255
6510.31.10.0/2910.31.10.1 – 10.31.10.610.31.10.7
6610.31.10.8/2910.31.10.9 – 10.31.10.1410.31.10.15
6710.31.10.16/2910.31.10.17 – 10.31.10.2210.31.10.23
6810.31.10.24/2910.31.10.25 – 10.31.10.3010.31.10.31
6910.31.10.32/2910.31.10.33 – 10.31.10.3810.31.10.39
7010.31.10.40/2910.31.10.41 – 10.31.10.4610.31.10.47
7110.31.10.48/2910.31.10.49 – 10.31.10.5410.31.10.55
7210.31.10.56/2910.31.10.57 – 10.31.10.6210.31.10.63
7310.31.10.64/2910.31.10.65 – 10.31.10.7010.31.10.71
7410.31.10.72/2910.31.10.73 – 10.31.10.7810.31.10.79
7510.31.10.80/2910.31.10.81 – 10.31.10.8610.31.10.87
7610.31.10.88/2910.31.10.89 – 10.31.10.9410.31.10.95
7710.31.10.96/2910.31.10.97 – 10.31.10.10210.31.10.103
7810.31.10.104/2910.31.10.105 – 10.31.10.11010.31.10.111
7910.31.10.112/2910.31.10.113 – 10.31.10.11810.31.10.119
8010.31.10.120/2910.31.10.121 – 10.31.10.12610.31.10.127
8110.31.10.128/2910.31.10.129 – 10.31.10.13410.31.10.135
8210.31.10.136/2910.31.10.137 – 10.31.10.14210.31.10.143
8310.31.10.144/2910.31.10.145 – 10.31.10.15010.31.10.151
8410.31.10.152/2910.31.10.153 – 10.31.10.15810.31.10.159
8510.31.10.160/2910.31.10.161 – 10.31.10.16610.31.10.167
8610.31.10.168/2910.31.10.169 – 10.31.10.17410.31.10.175
8710.31.10.176/2910.31.10.177 – 10.31.10.18210.31.10.183
8810.31.10.184/2910.31.10.185 – 10.31.10.19010.31.10.191
8910.31.10.192/2910.31.10.193 – 10.31.10.19810.31.10.199
9010.31.10.200/2910.31.10.201 – 10.31.10.20610.31.10.207
9110.31.10.208/2910.31.10.209 – 10.31.10.21410.31.10.215
9210.31.10.216/2910.31.10.217 – 10.31.10.22210.31.10.223
9310.31.10.224/2910.31.10.225 – 10.31.10.23010.31.10.231
9410.31.10.232/2910.31.10.233 – 10.31.10.23810.31.10.239
9510.31.10.240/2910.31.10.241 – 10.31.10.24610.31.10.247
9610.31.10.248/2910.31.10.249 – 10.31.10.25410.31.10.255
9710.31.11.0/2910.31.11.1 – 10.31.11.610.31.11.7
9810.31.11.8/2910.31.11.9 – 10.31.11.1410.31.11.15
9910.31.11.16/2910.31.11.17 – 10.31.11.2210.31.11.23
10010.31.11.24/2910.31.11.25 – 10.31.11.3010.31.11.31
10110.31.11.32/2910.31.11.33 – 10.31.11.3810.31.11.39
10210.31.11.40/2910.31.11.41 – 10.31.11.4610.31.11.47
10310.31.11.48/2910.31.11.49 – 10.31.11.5410.31.11.55
10410.31.11.56/2910.31.11.57 – 10.31.11.6210.31.11.63
10510.31.11.64/2910.31.11.65 – 10.31.11.7010.31.11.71
10610.31.11.72/2910.31.11.73 – 10.31.11.7810.31.11.79
10710.31.11.80/2910.31.11.81 – 10.31.11.8610.31.11.87
10810.31.11.88/2910.31.11.89 – 10.31.11.9410.31.11.95
10910.31.11.96/2910.31.11.97 – 10.31.11.10210.31.11.103
11010.31.11.104/2910.31.11.105 – 10.31.11.11010.31.11.111
11110.31.11.112/2910.31.11.113 – 10.31.11.11810.31.11.119
11210.31.11.120/2910.31.11.121 – 10.31.11.12610.31.11.127
11310.31.11.128/2910.31.11.129 – 10.31.11.13410.31.11.135
11410.31.11.136/2910.31.11.137 – 10.31.11.14210.31.11.143
11510.31.11.144/2910.31.11.145 – 10.31.11.15010.31.11.151
11610.31.11.152/2910.31.11.153 – 10.31.11.15810.31.11.159
11710.31.11.160/2910.31.11.161 – 10.31.11.16610.31.11.167
11810.31.11.168/2910.31.11.169 – 10.31.11.17410.31.11.175
11910.31.11.176/2910.31.11.177 – 10.31.11.18210.31.11.183
12010.31.11.184/2910.31.11.185 – 10.31.11.19010.31.11.191
12110.31.11.192/2910.31.11.193 – 10.31.11.19810.31.11.199
12210.31.11.200/2910.31.11.201 – 10.31.11.20610.31.11.207
12310.31.11.208/2910.31.11.209 – 10.31.11.21410.31.11.215
12410.31.11.216/2910.31.11.217 – 10.31.11.22210.31.11.223
12510.31.11.224/2910.31.11.225 – 10.31.11.23010.31.11.231
12610.31.11.232/2910.31.11.233 – 10.31.11.23810.31.11.239
12710.31.11.240/2910.31.11.241 – 10.31.11.24610.31.11.247
12810.31.11.248/2910.31.11.249 – 10.31.11.25410.31.11.255
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 →