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)10.78.12.0/22
network10.78.12.0/22
broadcast10.78.15.255
first host10.78.12.1
last host10.78.15.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.78.12.0/22
address00001010.01001110.00001100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01001110.00001100.00000000
broadcast00001010.01001110.00001111.11111111
green = network part, grey = host part
hex0x0a4e0c00
decimal172887040
reverse dns0.12.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:c00

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.12.0/2910.78.12.1 – 10.78.12.610.78.12.7
210.78.12.8/2910.78.12.9 – 10.78.12.1410.78.12.15
310.78.12.16/2910.78.12.17 – 10.78.12.2210.78.12.23
410.78.12.24/2910.78.12.25 – 10.78.12.3010.78.12.31
510.78.12.32/2910.78.12.33 – 10.78.12.3810.78.12.39
610.78.12.40/2910.78.12.41 – 10.78.12.4610.78.12.47
710.78.12.48/2910.78.12.49 – 10.78.12.5410.78.12.55
810.78.12.56/2910.78.12.57 – 10.78.12.6210.78.12.63
910.78.12.64/2910.78.12.65 – 10.78.12.7010.78.12.71
1010.78.12.72/2910.78.12.73 – 10.78.12.7810.78.12.79
1110.78.12.80/2910.78.12.81 – 10.78.12.8610.78.12.87
1210.78.12.88/2910.78.12.89 – 10.78.12.9410.78.12.95
1310.78.12.96/2910.78.12.97 – 10.78.12.10210.78.12.103
1410.78.12.104/2910.78.12.105 – 10.78.12.11010.78.12.111
1510.78.12.112/2910.78.12.113 – 10.78.12.11810.78.12.119
1610.78.12.120/2910.78.12.121 – 10.78.12.12610.78.12.127
1710.78.12.128/2910.78.12.129 – 10.78.12.13410.78.12.135
1810.78.12.136/2910.78.12.137 – 10.78.12.14210.78.12.143
1910.78.12.144/2910.78.12.145 – 10.78.12.15010.78.12.151
2010.78.12.152/2910.78.12.153 – 10.78.12.15810.78.12.159
2110.78.12.160/2910.78.12.161 – 10.78.12.16610.78.12.167
2210.78.12.168/2910.78.12.169 – 10.78.12.17410.78.12.175
2310.78.12.176/2910.78.12.177 – 10.78.12.18210.78.12.183
2410.78.12.184/2910.78.12.185 – 10.78.12.19010.78.12.191
2510.78.12.192/2910.78.12.193 – 10.78.12.19810.78.12.199
2610.78.12.200/2910.78.12.201 – 10.78.12.20610.78.12.207
2710.78.12.208/2910.78.12.209 – 10.78.12.21410.78.12.215
2810.78.12.216/2910.78.12.217 – 10.78.12.22210.78.12.223
2910.78.12.224/2910.78.12.225 – 10.78.12.23010.78.12.231
3010.78.12.232/2910.78.12.233 – 10.78.12.23810.78.12.239
3110.78.12.240/2910.78.12.241 – 10.78.12.24610.78.12.247
3210.78.12.248/2910.78.12.249 – 10.78.12.25410.78.12.255
3310.78.13.0/2910.78.13.1 – 10.78.13.610.78.13.7
3410.78.13.8/2910.78.13.9 – 10.78.13.1410.78.13.15
3510.78.13.16/2910.78.13.17 – 10.78.13.2210.78.13.23
3610.78.13.24/2910.78.13.25 – 10.78.13.3010.78.13.31
3710.78.13.32/2910.78.13.33 – 10.78.13.3810.78.13.39
3810.78.13.40/2910.78.13.41 – 10.78.13.4610.78.13.47
3910.78.13.48/2910.78.13.49 – 10.78.13.5410.78.13.55
4010.78.13.56/2910.78.13.57 – 10.78.13.6210.78.13.63
4110.78.13.64/2910.78.13.65 – 10.78.13.7010.78.13.71
4210.78.13.72/2910.78.13.73 – 10.78.13.7810.78.13.79
4310.78.13.80/2910.78.13.81 – 10.78.13.8610.78.13.87
4410.78.13.88/2910.78.13.89 – 10.78.13.9410.78.13.95
4510.78.13.96/2910.78.13.97 – 10.78.13.10210.78.13.103
4610.78.13.104/2910.78.13.105 – 10.78.13.11010.78.13.111
4710.78.13.112/2910.78.13.113 – 10.78.13.11810.78.13.119
4810.78.13.120/2910.78.13.121 – 10.78.13.12610.78.13.127
4910.78.13.128/2910.78.13.129 – 10.78.13.13410.78.13.135
5010.78.13.136/2910.78.13.137 – 10.78.13.14210.78.13.143
5110.78.13.144/2910.78.13.145 – 10.78.13.15010.78.13.151
5210.78.13.152/2910.78.13.153 – 10.78.13.15810.78.13.159
5310.78.13.160/2910.78.13.161 – 10.78.13.16610.78.13.167
5410.78.13.168/2910.78.13.169 – 10.78.13.17410.78.13.175
5510.78.13.176/2910.78.13.177 – 10.78.13.18210.78.13.183
5610.78.13.184/2910.78.13.185 – 10.78.13.19010.78.13.191
5710.78.13.192/2910.78.13.193 – 10.78.13.19810.78.13.199
5810.78.13.200/2910.78.13.201 – 10.78.13.20610.78.13.207
5910.78.13.208/2910.78.13.209 – 10.78.13.21410.78.13.215
6010.78.13.216/2910.78.13.217 – 10.78.13.22210.78.13.223
6110.78.13.224/2910.78.13.225 – 10.78.13.23010.78.13.231
6210.78.13.232/2910.78.13.233 – 10.78.13.23810.78.13.239
6310.78.13.240/2910.78.13.241 – 10.78.13.24610.78.13.247
6410.78.13.248/2910.78.13.249 – 10.78.13.25410.78.13.255
6510.78.14.0/2910.78.14.1 – 10.78.14.610.78.14.7
6610.78.14.8/2910.78.14.9 – 10.78.14.1410.78.14.15
6710.78.14.16/2910.78.14.17 – 10.78.14.2210.78.14.23
6810.78.14.24/2910.78.14.25 – 10.78.14.3010.78.14.31
6910.78.14.32/2910.78.14.33 – 10.78.14.3810.78.14.39
7010.78.14.40/2910.78.14.41 – 10.78.14.4610.78.14.47
7110.78.14.48/2910.78.14.49 – 10.78.14.5410.78.14.55
7210.78.14.56/2910.78.14.57 – 10.78.14.6210.78.14.63
7310.78.14.64/2910.78.14.65 – 10.78.14.7010.78.14.71
7410.78.14.72/2910.78.14.73 – 10.78.14.7810.78.14.79
7510.78.14.80/2910.78.14.81 – 10.78.14.8610.78.14.87
7610.78.14.88/2910.78.14.89 – 10.78.14.9410.78.14.95
7710.78.14.96/2910.78.14.97 – 10.78.14.10210.78.14.103
7810.78.14.104/2910.78.14.105 – 10.78.14.11010.78.14.111
7910.78.14.112/2910.78.14.113 – 10.78.14.11810.78.14.119
8010.78.14.120/2910.78.14.121 – 10.78.14.12610.78.14.127
8110.78.14.128/2910.78.14.129 – 10.78.14.13410.78.14.135
8210.78.14.136/2910.78.14.137 – 10.78.14.14210.78.14.143
8310.78.14.144/2910.78.14.145 – 10.78.14.15010.78.14.151
8410.78.14.152/2910.78.14.153 – 10.78.14.15810.78.14.159
8510.78.14.160/2910.78.14.161 – 10.78.14.16610.78.14.167
8610.78.14.168/2910.78.14.169 – 10.78.14.17410.78.14.175
8710.78.14.176/2910.78.14.177 – 10.78.14.18210.78.14.183
8810.78.14.184/2910.78.14.185 – 10.78.14.19010.78.14.191
8910.78.14.192/2910.78.14.193 – 10.78.14.19810.78.14.199
9010.78.14.200/2910.78.14.201 – 10.78.14.20610.78.14.207
9110.78.14.208/2910.78.14.209 – 10.78.14.21410.78.14.215
9210.78.14.216/2910.78.14.217 – 10.78.14.22210.78.14.223
9310.78.14.224/2910.78.14.225 – 10.78.14.23010.78.14.231
9410.78.14.232/2910.78.14.233 – 10.78.14.23810.78.14.239
9510.78.14.240/2910.78.14.241 – 10.78.14.24610.78.14.247
9610.78.14.248/2910.78.14.249 – 10.78.14.25410.78.14.255
9710.78.15.0/2910.78.15.1 – 10.78.15.610.78.15.7
9810.78.15.8/2910.78.15.9 – 10.78.15.1410.78.15.15
9910.78.15.16/2910.78.15.17 – 10.78.15.2210.78.15.23
10010.78.15.24/2910.78.15.25 – 10.78.15.3010.78.15.31
10110.78.15.32/2910.78.15.33 – 10.78.15.3810.78.15.39
10210.78.15.40/2910.78.15.41 – 10.78.15.4610.78.15.47
10310.78.15.48/2910.78.15.49 – 10.78.15.5410.78.15.55
10410.78.15.56/2910.78.15.57 – 10.78.15.6210.78.15.63
10510.78.15.64/2910.78.15.65 – 10.78.15.7010.78.15.71
10610.78.15.72/2910.78.15.73 – 10.78.15.7810.78.15.79
10710.78.15.80/2910.78.15.81 – 10.78.15.8610.78.15.87
10810.78.15.88/2910.78.15.89 – 10.78.15.9410.78.15.95
10910.78.15.96/2910.78.15.97 – 10.78.15.10210.78.15.103
11010.78.15.104/2910.78.15.105 – 10.78.15.11010.78.15.111
11110.78.15.112/2910.78.15.113 – 10.78.15.11810.78.15.119
11210.78.15.120/2910.78.15.121 – 10.78.15.12610.78.15.127
11310.78.15.128/2910.78.15.129 – 10.78.15.13410.78.15.135
11410.78.15.136/2910.78.15.137 – 10.78.15.14210.78.15.143
11510.78.15.144/2910.78.15.145 – 10.78.15.15010.78.15.151
11610.78.15.152/2910.78.15.153 – 10.78.15.15810.78.15.159
11710.78.15.160/2910.78.15.161 – 10.78.15.16610.78.15.167
11810.78.15.168/2910.78.15.169 – 10.78.15.17410.78.15.175
11910.78.15.176/2910.78.15.177 – 10.78.15.18210.78.15.183
12010.78.15.184/2910.78.15.185 – 10.78.15.19010.78.15.191
12110.78.15.192/2910.78.15.193 – 10.78.15.19810.78.15.199
12210.78.15.200/2910.78.15.201 – 10.78.15.20610.78.15.207
12310.78.15.208/2910.78.15.209 – 10.78.15.21410.78.15.215
12410.78.15.216/2910.78.15.217 – 10.78.15.22210.78.15.223
12510.78.15.224/2910.78.15.225 – 10.78.15.23010.78.15.231
12610.78.15.232/2910.78.15.233 – 10.78.15.23810.78.15.239
12710.78.15.240/2910.78.15.241 – 10.78.15.24610.78.15.247
12810.78.15.248/2910.78.15.249 – 10.78.15.25410.78.15.255
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 →