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)10.30.72.0/22
network10.30.72.0/22
broadcast10.30.75.255
first host10.30.72.1
last host10.30.75.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.30.72.0/22
address00001010.00011110.01001000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00011110.01001000.00000000
broadcast00001010.00011110.01001011.11111111
green = network part, grey = host part
hex0x0a1e4800
decimal169756672
reverse dns0.72.30.10.in-addr.arpa
ipv4-mapped::ffff:a1e:4800

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.30.72.0/2910.30.72.1 – 10.30.72.610.30.72.7
210.30.72.8/2910.30.72.9 – 10.30.72.1410.30.72.15
310.30.72.16/2910.30.72.17 – 10.30.72.2210.30.72.23
410.30.72.24/2910.30.72.25 – 10.30.72.3010.30.72.31
510.30.72.32/2910.30.72.33 – 10.30.72.3810.30.72.39
610.30.72.40/2910.30.72.41 – 10.30.72.4610.30.72.47
710.30.72.48/2910.30.72.49 – 10.30.72.5410.30.72.55
810.30.72.56/2910.30.72.57 – 10.30.72.6210.30.72.63
910.30.72.64/2910.30.72.65 – 10.30.72.7010.30.72.71
1010.30.72.72/2910.30.72.73 – 10.30.72.7810.30.72.79
1110.30.72.80/2910.30.72.81 – 10.30.72.8610.30.72.87
1210.30.72.88/2910.30.72.89 – 10.30.72.9410.30.72.95
1310.30.72.96/2910.30.72.97 – 10.30.72.10210.30.72.103
1410.30.72.104/2910.30.72.105 – 10.30.72.11010.30.72.111
1510.30.72.112/2910.30.72.113 – 10.30.72.11810.30.72.119
1610.30.72.120/2910.30.72.121 – 10.30.72.12610.30.72.127
1710.30.72.128/2910.30.72.129 – 10.30.72.13410.30.72.135
1810.30.72.136/2910.30.72.137 – 10.30.72.14210.30.72.143
1910.30.72.144/2910.30.72.145 – 10.30.72.15010.30.72.151
2010.30.72.152/2910.30.72.153 – 10.30.72.15810.30.72.159
2110.30.72.160/2910.30.72.161 – 10.30.72.16610.30.72.167
2210.30.72.168/2910.30.72.169 – 10.30.72.17410.30.72.175
2310.30.72.176/2910.30.72.177 – 10.30.72.18210.30.72.183
2410.30.72.184/2910.30.72.185 – 10.30.72.19010.30.72.191
2510.30.72.192/2910.30.72.193 – 10.30.72.19810.30.72.199
2610.30.72.200/2910.30.72.201 – 10.30.72.20610.30.72.207
2710.30.72.208/2910.30.72.209 – 10.30.72.21410.30.72.215
2810.30.72.216/2910.30.72.217 – 10.30.72.22210.30.72.223
2910.30.72.224/2910.30.72.225 – 10.30.72.23010.30.72.231
3010.30.72.232/2910.30.72.233 – 10.30.72.23810.30.72.239
3110.30.72.240/2910.30.72.241 – 10.30.72.24610.30.72.247
3210.30.72.248/2910.30.72.249 – 10.30.72.25410.30.72.255
3310.30.73.0/2910.30.73.1 – 10.30.73.610.30.73.7
3410.30.73.8/2910.30.73.9 – 10.30.73.1410.30.73.15
3510.30.73.16/2910.30.73.17 – 10.30.73.2210.30.73.23
3610.30.73.24/2910.30.73.25 – 10.30.73.3010.30.73.31
3710.30.73.32/2910.30.73.33 – 10.30.73.3810.30.73.39
3810.30.73.40/2910.30.73.41 – 10.30.73.4610.30.73.47
3910.30.73.48/2910.30.73.49 – 10.30.73.5410.30.73.55
4010.30.73.56/2910.30.73.57 – 10.30.73.6210.30.73.63
4110.30.73.64/2910.30.73.65 – 10.30.73.7010.30.73.71
4210.30.73.72/2910.30.73.73 – 10.30.73.7810.30.73.79
4310.30.73.80/2910.30.73.81 – 10.30.73.8610.30.73.87
4410.30.73.88/2910.30.73.89 – 10.30.73.9410.30.73.95
4510.30.73.96/2910.30.73.97 – 10.30.73.10210.30.73.103
4610.30.73.104/2910.30.73.105 – 10.30.73.11010.30.73.111
4710.30.73.112/2910.30.73.113 – 10.30.73.11810.30.73.119
4810.30.73.120/2910.30.73.121 – 10.30.73.12610.30.73.127
4910.30.73.128/2910.30.73.129 – 10.30.73.13410.30.73.135
5010.30.73.136/2910.30.73.137 – 10.30.73.14210.30.73.143
5110.30.73.144/2910.30.73.145 – 10.30.73.15010.30.73.151
5210.30.73.152/2910.30.73.153 – 10.30.73.15810.30.73.159
5310.30.73.160/2910.30.73.161 – 10.30.73.16610.30.73.167
5410.30.73.168/2910.30.73.169 – 10.30.73.17410.30.73.175
5510.30.73.176/2910.30.73.177 – 10.30.73.18210.30.73.183
5610.30.73.184/2910.30.73.185 – 10.30.73.19010.30.73.191
5710.30.73.192/2910.30.73.193 – 10.30.73.19810.30.73.199
5810.30.73.200/2910.30.73.201 – 10.30.73.20610.30.73.207
5910.30.73.208/2910.30.73.209 – 10.30.73.21410.30.73.215
6010.30.73.216/2910.30.73.217 – 10.30.73.22210.30.73.223
6110.30.73.224/2910.30.73.225 – 10.30.73.23010.30.73.231
6210.30.73.232/2910.30.73.233 – 10.30.73.23810.30.73.239
6310.30.73.240/2910.30.73.241 – 10.30.73.24610.30.73.247
6410.30.73.248/2910.30.73.249 – 10.30.73.25410.30.73.255
6510.30.74.0/2910.30.74.1 – 10.30.74.610.30.74.7
6610.30.74.8/2910.30.74.9 – 10.30.74.1410.30.74.15
6710.30.74.16/2910.30.74.17 – 10.30.74.2210.30.74.23
6810.30.74.24/2910.30.74.25 – 10.30.74.3010.30.74.31
6910.30.74.32/2910.30.74.33 – 10.30.74.3810.30.74.39
7010.30.74.40/2910.30.74.41 – 10.30.74.4610.30.74.47
7110.30.74.48/2910.30.74.49 – 10.30.74.5410.30.74.55
7210.30.74.56/2910.30.74.57 – 10.30.74.6210.30.74.63
7310.30.74.64/2910.30.74.65 – 10.30.74.7010.30.74.71
7410.30.74.72/2910.30.74.73 – 10.30.74.7810.30.74.79
7510.30.74.80/2910.30.74.81 – 10.30.74.8610.30.74.87
7610.30.74.88/2910.30.74.89 – 10.30.74.9410.30.74.95
7710.30.74.96/2910.30.74.97 – 10.30.74.10210.30.74.103
7810.30.74.104/2910.30.74.105 – 10.30.74.11010.30.74.111
7910.30.74.112/2910.30.74.113 – 10.30.74.11810.30.74.119
8010.30.74.120/2910.30.74.121 – 10.30.74.12610.30.74.127
8110.30.74.128/2910.30.74.129 – 10.30.74.13410.30.74.135
8210.30.74.136/2910.30.74.137 – 10.30.74.14210.30.74.143
8310.30.74.144/2910.30.74.145 – 10.30.74.15010.30.74.151
8410.30.74.152/2910.30.74.153 – 10.30.74.15810.30.74.159
8510.30.74.160/2910.30.74.161 – 10.30.74.16610.30.74.167
8610.30.74.168/2910.30.74.169 – 10.30.74.17410.30.74.175
8710.30.74.176/2910.30.74.177 – 10.30.74.18210.30.74.183
8810.30.74.184/2910.30.74.185 – 10.30.74.19010.30.74.191
8910.30.74.192/2910.30.74.193 – 10.30.74.19810.30.74.199
9010.30.74.200/2910.30.74.201 – 10.30.74.20610.30.74.207
9110.30.74.208/2910.30.74.209 – 10.30.74.21410.30.74.215
9210.30.74.216/2910.30.74.217 – 10.30.74.22210.30.74.223
9310.30.74.224/2910.30.74.225 – 10.30.74.23010.30.74.231
9410.30.74.232/2910.30.74.233 – 10.30.74.23810.30.74.239
9510.30.74.240/2910.30.74.241 – 10.30.74.24610.30.74.247
9610.30.74.248/2910.30.74.249 – 10.30.74.25410.30.74.255
9710.30.75.0/2910.30.75.1 – 10.30.75.610.30.75.7
9810.30.75.8/2910.30.75.9 – 10.30.75.1410.30.75.15
9910.30.75.16/2910.30.75.17 – 10.30.75.2210.30.75.23
10010.30.75.24/2910.30.75.25 – 10.30.75.3010.30.75.31
10110.30.75.32/2910.30.75.33 – 10.30.75.3810.30.75.39
10210.30.75.40/2910.30.75.41 – 10.30.75.4610.30.75.47
10310.30.75.48/2910.30.75.49 – 10.30.75.5410.30.75.55
10410.30.75.56/2910.30.75.57 – 10.30.75.6210.30.75.63
10510.30.75.64/2910.30.75.65 – 10.30.75.7010.30.75.71
10610.30.75.72/2910.30.75.73 – 10.30.75.7810.30.75.79
10710.30.75.80/2910.30.75.81 – 10.30.75.8610.30.75.87
10810.30.75.88/2910.30.75.89 – 10.30.75.9410.30.75.95
10910.30.75.96/2910.30.75.97 – 10.30.75.10210.30.75.103
11010.30.75.104/2910.30.75.105 – 10.30.75.11010.30.75.111
11110.30.75.112/2910.30.75.113 – 10.30.75.11810.30.75.119
11210.30.75.120/2910.30.75.121 – 10.30.75.12610.30.75.127
11310.30.75.128/2910.30.75.129 – 10.30.75.13410.30.75.135
11410.30.75.136/2910.30.75.137 – 10.30.75.14210.30.75.143
11510.30.75.144/2910.30.75.145 – 10.30.75.15010.30.75.151
11610.30.75.152/2910.30.75.153 – 10.30.75.15810.30.75.159
11710.30.75.160/2910.30.75.161 – 10.30.75.16610.30.75.167
11810.30.75.168/2910.30.75.169 – 10.30.75.17410.30.75.175
11910.30.75.176/2910.30.75.177 – 10.30.75.18210.30.75.183
12010.30.75.184/2910.30.75.185 – 10.30.75.19010.30.75.191
12110.30.75.192/2910.30.75.193 – 10.30.75.19810.30.75.199
12210.30.75.200/2910.30.75.201 – 10.30.75.20610.30.75.207
12310.30.75.208/2910.30.75.209 – 10.30.75.21410.30.75.215
12410.30.75.216/2910.30.75.217 – 10.30.75.22210.30.75.223
12510.30.75.224/2910.30.75.225 – 10.30.75.23010.30.75.231
12610.30.75.232/2910.30.75.233 – 10.30.75.23810.30.75.239
12710.30.75.240/2910.30.75.241 – 10.30.75.24610.30.75.247
12810.30.75.248/2910.30.75.249 – 10.30.75.25410.30.75.255
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 →