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)10.138.0.0/22
network10.138.0.0/22
broadcast10.138.3.255
first host10.138.0.1
last host10.138.3.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.138.0.0/22
address00001010.10001010.00000000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10001010.00000000.00000000
broadcast00001010.10001010.00000011.11111111
green = network part, grey = host part
hex0x0a8a0000
decimal176816128
reverse dns0.0.138.10.in-addr.arpa
ipv4-mapped::ffff:a8a:0

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.138.0.0/2910.138.0.1 – 10.138.0.610.138.0.7
210.138.0.8/2910.138.0.9 – 10.138.0.1410.138.0.15
310.138.0.16/2910.138.0.17 – 10.138.0.2210.138.0.23
410.138.0.24/2910.138.0.25 – 10.138.0.3010.138.0.31
510.138.0.32/2910.138.0.33 – 10.138.0.3810.138.0.39
610.138.0.40/2910.138.0.41 – 10.138.0.4610.138.0.47
710.138.0.48/2910.138.0.49 – 10.138.0.5410.138.0.55
810.138.0.56/2910.138.0.57 – 10.138.0.6210.138.0.63
910.138.0.64/2910.138.0.65 – 10.138.0.7010.138.0.71
1010.138.0.72/2910.138.0.73 – 10.138.0.7810.138.0.79
1110.138.0.80/2910.138.0.81 – 10.138.0.8610.138.0.87
1210.138.0.88/2910.138.0.89 – 10.138.0.9410.138.0.95
1310.138.0.96/2910.138.0.97 – 10.138.0.10210.138.0.103
1410.138.0.104/2910.138.0.105 – 10.138.0.11010.138.0.111
1510.138.0.112/2910.138.0.113 – 10.138.0.11810.138.0.119
1610.138.0.120/2910.138.0.121 – 10.138.0.12610.138.0.127
1710.138.0.128/2910.138.0.129 – 10.138.0.13410.138.0.135
1810.138.0.136/2910.138.0.137 – 10.138.0.14210.138.0.143
1910.138.0.144/2910.138.0.145 – 10.138.0.15010.138.0.151
2010.138.0.152/2910.138.0.153 – 10.138.0.15810.138.0.159
2110.138.0.160/2910.138.0.161 – 10.138.0.16610.138.0.167
2210.138.0.168/2910.138.0.169 – 10.138.0.17410.138.0.175
2310.138.0.176/2910.138.0.177 – 10.138.0.18210.138.0.183
2410.138.0.184/2910.138.0.185 – 10.138.0.19010.138.0.191
2510.138.0.192/2910.138.0.193 – 10.138.0.19810.138.0.199
2610.138.0.200/2910.138.0.201 – 10.138.0.20610.138.0.207
2710.138.0.208/2910.138.0.209 – 10.138.0.21410.138.0.215
2810.138.0.216/2910.138.0.217 – 10.138.0.22210.138.0.223
2910.138.0.224/2910.138.0.225 – 10.138.0.23010.138.0.231
3010.138.0.232/2910.138.0.233 – 10.138.0.23810.138.0.239
3110.138.0.240/2910.138.0.241 – 10.138.0.24610.138.0.247
3210.138.0.248/2910.138.0.249 – 10.138.0.25410.138.0.255
3310.138.1.0/2910.138.1.1 – 10.138.1.610.138.1.7
3410.138.1.8/2910.138.1.9 – 10.138.1.1410.138.1.15
3510.138.1.16/2910.138.1.17 – 10.138.1.2210.138.1.23
3610.138.1.24/2910.138.1.25 – 10.138.1.3010.138.1.31
3710.138.1.32/2910.138.1.33 – 10.138.1.3810.138.1.39
3810.138.1.40/2910.138.1.41 – 10.138.1.4610.138.1.47
3910.138.1.48/2910.138.1.49 – 10.138.1.5410.138.1.55
4010.138.1.56/2910.138.1.57 – 10.138.1.6210.138.1.63
4110.138.1.64/2910.138.1.65 – 10.138.1.7010.138.1.71
4210.138.1.72/2910.138.1.73 – 10.138.1.7810.138.1.79
4310.138.1.80/2910.138.1.81 – 10.138.1.8610.138.1.87
4410.138.1.88/2910.138.1.89 – 10.138.1.9410.138.1.95
4510.138.1.96/2910.138.1.97 – 10.138.1.10210.138.1.103
4610.138.1.104/2910.138.1.105 – 10.138.1.11010.138.1.111
4710.138.1.112/2910.138.1.113 – 10.138.1.11810.138.1.119
4810.138.1.120/2910.138.1.121 – 10.138.1.12610.138.1.127
4910.138.1.128/2910.138.1.129 – 10.138.1.13410.138.1.135
5010.138.1.136/2910.138.1.137 – 10.138.1.14210.138.1.143
5110.138.1.144/2910.138.1.145 – 10.138.1.15010.138.1.151
5210.138.1.152/2910.138.1.153 – 10.138.1.15810.138.1.159
5310.138.1.160/2910.138.1.161 – 10.138.1.16610.138.1.167
5410.138.1.168/2910.138.1.169 – 10.138.1.17410.138.1.175
5510.138.1.176/2910.138.1.177 – 10.138.1.18210.138.1.183
5610.138.1.184/2910.138.1.185 – 10.138.1.19010.138.1.191
5710.138.1.192/2910.138.1.193 – 10.138.1.19810.138.1.199
5810.138.1.200/2910.138.1.201 – 10.138.1.20610.138.1.207
5910.138.1.208/2910.138.1.209 – 10.138.1.21410.138.1.215
6010.138.1.216/2910.138.1.217 – 10.138.1.22210.138.1.223
6110.138.1.224/2910.138.1.225 – 10.138.1.23010.138.1.231
6210.138.1.232/2910.138.1.233 – 10.138.1.23810.138.1.239
6310.138.1.240/2910.138.1.241 – 10.138.1.24610.138.1.247
6410.138.1.248/2910.138.1.249 – 10.138.1.25410.138.1.255
6510.138.2.0/2910.138.2.1 – 10.138.2.610.138.2.7
6610.138.2.8/2910.138.2.9 – 10.138.2.1410.138.2.15
6710.138.2.16/2910.138.2.17 – 10.138.2.2210.138.2.23
6810.138.2.24/2910.138.2.25 – 10.138.2.3010.138.2.31
6910.138.2.32/2910.138.2.33 – 10.138.2.3810.138.2.39
7010.138.2.40/2910.138.2.41 – 10.138.2.4610.138.2.47
7110.138.2.48/2910.138.2.49 – 10.138.2.5410.138.2.55
7210.138.2.56/2910.138.2.57 – 10.138.2.6210.138.2.63
7310.138.2.64/2910.138.2.65 – 10.138.2.7010.138.2.71
7410.138.2.72/2910.138.2.73 – 10.138.2.7810.138.2.79
7510.138.2.80/2910.138.2.81 – 10.138.2.8610.138.2.87
7610.138.2.88/2910.138.2.89 – 10.138.2.9410.138.2.95
7710.138.2.96/2910.138.2.97 – 10.138.2.10210.138.2.103
7810.138.2.104/2910.138.2.105 – 10.138.2.11010.138.2.111
7910.138.2.112/2910.138.2.113 – 10.138.2.11810.138.2.119
8010.138.2.120/2910.138.2.121 – 10.138.2.12610.138.2.127
8110.138.2.128/2910.138.2.129 – 10.138.2.13410.138.2.135
8210.138.2.136/2910.138.2.137 – 10.138.2.14210.138.2.143
8310.138.2.144/2910.138.2.145 – 10.138.2.15010.138.2.151
8410.138.2.152/2910.138.2.153 – 10.138.2.15810.138.2.159
8510.138.2.160/2910.138.2.161 – 10.138.2.16610.138.2.167
8610.138.2.168/2910.138.2.169 – 10.138.2.17410.138.2.175
8710.138.2.176/2910.138.2.177 – 10.138.2.18210.138.2.183
8810.138.2.184/2910.138.2.185 – 10.138.2.19010.138.2.191
8910.138.2.192/2910.138.2.193 – 10.138.2.19810.138.2.199
9010.138.2.200/2910.138.2.201 – 10.138.2.20610.138.2.207
9110.138.2.208/2910.138.2.209 – 10.138.2.21410.138.2.215
9210.138.2.216/2910.138.2.217 – 10.138.2.22210.138.2.223
9310.138.2.224/2910.138.2.225 – 10.138.2.23010.138.2.231
9410.138.2.232/2910.138.2.233 – 10.138.2.23810.138.2.239
9510.138.2.240/2910.138.2.241 – 10.138.2.24610.138.2.247
9610.138.2.248/2910.138.2.249 – 10.138.2.25410.138.2.255
9710.138.3.0/2910.138.3.1 – 10.138.3.610.138.3.7
9810.138.3.8/2910.138.3.9 – 10.138.3.1410.138.3.15
9910.138.3.16/2910.138.3.17 – 10.138.3.2210.138.3.23
10010.138.3.24/2910.138.3.25 – 10.138.3.3010.138.3.31
10110.138.3.32/2910.138.3.33 – 10.138.3.3810.138.3.39
10210.138.3.40/2910.138.3.41 – 10.138.3.4610.138.3.47
10310.138.3.48/2910.138.3.49 – 10.138.3.5410.138.3.55
10410.138.3.56/2910.138.3.57 – 10.138.3.6210.138.3.63
10510.138.3.64/2910.138.3.65 – 10.138.3.7010.138.3.71
10610.138.3.72/2910.138.3.73 – 10.138.3.7810.138.3.79
10710.138.3.80/2910.138.3.81 – 10.138.3.8610.138.3.87
10810.138.3.88/2910.138.3.89 – 10.138.3.9410.138.3.95
10910.138.3.96/2910.138.3.97 – 10.138.3.10210.138.3.103
11010.138.3.104/2910.138.3.105 – 10.138.3.11010.138.3.111
11110.138.3.112/2910.138.3.113 – 10.138.3.11810.138.3.119
11210.138.3.120/2910.138.3.121 – 10.138.3.12610.138.3.127
11310.138.3.128/2910.138.3.129 – 10.138.3.13410.138.3.135
11410.138.3.136/2910.138.3.137 – 10.138.3.14210.138.3.143
11510.138.3.144/2910.138.3.145 – 10.138.3.15010.138.3.151
11610.138.3.152/2910.138.3.153 – 10.138.3.15810.138.3.159
11710.138.3.160/2910.138.3.161 – 10.138.3.16610.138.3.167
11810.138.3.168/2910.138.3.169 – 10.138.3.17410.138.3.175
11910.138.3.176/2910.138.3.177 – 10.138.3.18210.138.3.183
12010.138.3.184/2910.138.3.185 – 10.138.3.19010.138.3.191
12110.138.3.192/2910.138.3.193 – 10.138.3.19810.138.3.199
12210.138.3.200/2910.138.3.201 – 10.138.3.20610.138.3.207
12310.138.3.208/2910.138.3.209 – 10.138.3.21410.138.3.215
12410.138.3.216/2910.138.3.217 – 10.138.3.22210.138.3.223
12510.138.3.224/2910.138.3.225 – 10.138.3.23010.138.3.231
12610.138.3.232/2910.138.3.233 – 10.138.3.23810.138.3.239
12710.138.3.240/2910.138.3.241 – 10.138.3.24610.138.3.247
12810.138.3.248/2910.138.3.249 – 10.138.3.25410.138.3.255
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 →