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)10.237.4.0/22
network10.237.4.0/22
broadcast10.237.7.255
first host10.237.4.1
last host10.237.7.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.237.4.0/22
address00001010.11101101.00000100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.11101101.00000100.00000000
broadcast00001010.11101101.00000111.11111111
green = network part, grey = host part
hex0x0aed0400
decimal183305216
reverse dns0.4.237.10.in-addr.arpa
ipv4-mapped::ffff:aed:400

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.237.4.0/2910.237.4.1 – 10.237.4.610.237.4.7
210.237.4.8/2910.237.4.9 – 10.237.4.1410.237.4.15
310.237.4.16/2910.237.4.17 – 10.237.4.2210.237.4.23
410.237.4.24/2910.237.4.25 – 10.237.4.3010.237.4.31
510.237.4.32/2910.237.4.33 – 10.237.4.3810.237.4.39
610.237.4.40/2910.237.4.41 – 10.237.4.4610.237.4.47
710.237.4.48/2910.237.4.49 – 10.237.4.5410.237.4.55
810.237.4.56/2910.237.4.57 – 10.237.4.6210.237.4.63
910.237.4.64/2910.237.4.65 – 10.237.4.7010.237.4.71
1010.237.4.72/2910.237.4.73 – 10.237.4.7810.237.4.79
1110.237.4.80/2910.237.4.81 – 10.237.4.8610.237.4.87
1210.237.4.88/2910.237.4.89 – 10.237.4.9410.237.4.95
1310.237.4.96/2910.237.4.97 – 10.237.4.10210.237.4.103
1410.237.4.104/2910.237.4.105 – 10.237.4.11010.237.4.111
1510.237.4.112/2910.237.4.113 – 10.237.4.11810.237.4.119
1610.237.4.120/2910.237.4.121 – 10.237.4.12610.237.4.127
1710.237.4.128/2910.237.4.129 – 10.237.4.13410.237.4.135
1810.237.4.136/2910.237.4.137 – 10.237.4.14210.237.4.143
1910.237.4.144/2910.237.4.145 – 10.237.4.15010.237.4.151
2010.237.4.152/2910.237.4.153 – 10.237.4.15810.237.4.159
2110.237.4.160/2910.237.4.161 – 10.237.4.16610.237.4.167
2210.237.4.168/2910.237.4.169 – 10.237.4.17410.237.4.175
2310.237.4.176/2910.237.4.177 – 10.237.4.18210.237.4.183
2410.237.4.184/2910.237.4.185 – 10.237.4.19010.237.4.191
2510.237.4.192/2910.237.4.193 – 10.237.4.19810.237.4.199
2610.237.4.200/2910.237.4.201 – 10.237.4.20610.237.4.207
2710.237.4.208/2910.237.4.209 – 10.237.4.21410.237.4.215
2810.237.4.216/2910.237.4.217 – 10.237.4.22210.237.4.223
2910.237.4.224/2910.237.4.225 – 10.237.4.23010.237.4.231
3010.237.4.232/2910.237.4.233 – 10.237.4.23810.237.4.239
3110.237.4.240/2910.237.4.241 – 10.237.4.24610.237.4.247
3210.237.4.248/2910.237.4.249 – 10.237.4.25410.237.4.255
3310.237.5.0/2910.237.5.1 – 10.237.5.610.237.5.7
3410.237.5.8/2910.237.5.9 – 10.237.5.1410.237.5.15
3510.237.5.16/2910.237.5.17 – 10.237.5.2210.237.5.23
3610.237.5.24/2910.237.5.25 – 10.237.5.3010.237.5.31
3710.237.5.32/2910.237.5.33 – 10.237.5.3810.237.5.39
3810.237.5.40/2910.237.5.41 – 10.237.5.4610.237.5.47
3910.237.5.48/2910.237.5.49 – 10.237.5.5410.237.5.55
4010.237.5.56/2910.237.5.57 – 10.237.5.6210.237.5.63
4110.237.5.64/2910.237.5.65 – 10.237.5.7010.237.5.71
4210.237.5.72/2910.237.5.73 – 10.237.5.7810.237.5.79
4310.237.5.80/2910.237.5.81 – 10.237.5.8610.237.5.87
4410.237.5.88/2910.237.5.89 – 10.237.5.9410.237.5.95
4510.237.5.96/2910.237.5.97 – 10.237.5.10210.237.5.103
4610.237.5.104/2910.237.5.105 – 10.237.5.11010.237.5.111
4710.237.5.112/2910.237.5.113 – 10.237.5.11810.237.5.119
4810.237.5.120/2910.237.5.121 – 10.237.5.12610.237.5.127
4910.237.5.128/2910.237.5.129 – 10.237.5.13410.237.5.135
5010.237.5.136/2910.237.5.137 – 10.237.5.14210.237.5.143
5110.237.5.144/2910.237.5.145 – 10.237.5.15010.237.5.151
5210.237.5.152/2910.237.5.153 – 10.237.5.15810.237.5.159
5310.237.5.160/2910.237.5.161 – 10.237.5.16610.237.5.167
5410.237.5.168/2910.237.5.169 – 10.237.5.17410.237.5.175
5510.237.5.176/2910.237.5.177 – 10.237.5.18210.237.5.183
5610.237.5.184/2910.237.5.185 – 10.237.5.19010.237.5.191
5710.237.5.192/2910.237.5.193 – 10.237.5.19810.237.5.199
5810.237.5.200/2910.237.5.201 – 10.237.5.20610.237.5.207
5910.237.5.208/2910.237.5.209 – 10.237.5.21410.237.5.215
6010.237.5.216/2910.237.5.217 – 10.237.5.22210.237.5.223
6110.237.5.224/2910.237.5.225 – 10.237.5.23010.237.5.231
6210.237.5.232/2910.237.5.233 – 10.237.5.23810.237.5.239
6310.237.5.240/2910.237.5.241 – 10.237.5.24610.237.5.247
6410.237.5.248/2910.237.5.249 – 10.237.5.25410.237.5.255
6510.237.6.0/2910.237.6.1 – 10.237.6.610.237.6.7
6610.237.6.8/2910.237.6.9 – 10.237.6.1410.237.6.15
6710.237.6.16/2910.237.6.17 – 10.237.6.2210.237.6.23
6810.237.6.24/2910.237.6.25 – 10.237.6.3010.237.6.31
6910.237.6.32/2910.237.6.33 – 10.237.6.3810.237.6.39
7010.237.6.40/2910.237.6.41 – 10.237.6.4610.237.6.47
7110.237.6.48/2910.237.6.49 – 10.237.6.5410.237.6.55
7210.237.6.56/2910.237.6.57 – 10.237.6.6210.237.6.63
7310.237.6.64/2910.237.6.65 – 10.237.6.7010.237.6.71
7410.237.6.72/2910.237.6.73 – 10.237.6.7810.237.6.79
7510.237.6.80/2910.237.6.81 – 10.237.6.8610.237.6.87
7610.237.6.88/2910.237.6.89 – 10.237.6.9410.237.6.95
7710.237.6.96/2910.237.6.97 – 10.237.6.10210.237.6.103
7810.237.6.104/2910.237.6.105 – 10.237.6.11010.237.6.111
7910.237.6.112/2910.237.6.113 – 10.237.6.11810.237.6.119
8010.237.6.120/2910.237.6.121 – 10.237.6.12610.237.6.127
8110.237.6.128/2910.237.6.129 – 10.237.6.13410.237.6.135
8210.237.6.136/2910.237.6.137 – 10.237.6.14210.237.6.143
8310.237.6.144/2910.237.6.145 – 10.237.6.15010.237.6.151
8410.237.6.152/2910.237.6.153 – 10.237.6.15810.237.6.159
8510.237.6.160/2910.237.6.161 – 10.237.6.16610.237.6.167
8610.237.6.168/2910.237.6.169 – 10.237.6.17410.237.6.175
8710.237.6.176/2910.237.6.177 – 10.237.6.18210.237.6.183
8810.237.6.184/2910.237.6.185 – 10.237.6.19010.237.6.191
8910.237.6.192/2910.237.6.193 – 10.237.6.19810.237.6.199
9010.237.6.200/2910.237.6.201 – 10.237.6.20610.237.6.207
9110.237.6.208/2910.237.6.209 – 10.237.6.21410.237.6.215
9210.237.6.216/2910.237.6.217 – 10.237.6.22210.237.6.223
9310.237.6.224/2910.237.6.225 – 10.237.6.23010.237.6.231
9410.237.6.232/2910.237.6.233 – 10.237.6.23810.237.6.239
9510.237.6.240/2910.237.6.241 – 10.237.6.24610.237.6.247
9610.237.6.248/2910.237.6.249 – 10.237.6.25410.237.6.255
9710.237.7.0/2910.237.7.1 – 10.237.7.610.237.7.7
9810.237.7.8/2910.237.7.9 – 10.237.7.1410.237.7.15
9910.237.7.16/2910.237.7.17 – 10.237.7.2210.237.7.23
10010.237.7.24/2910.237.7.25 – 10.237.7.3010.237.7.31
10110.237.7.32/2910.237.7.33 – 10.237.7.3810.237.7.39
10210.237.7.40/2910.237.7.41 – 10.237.7.4610.237.7.47
10310.237.7.48/2910.237.7.49 – 10.237.7.5410.237.7.55
10410.237.7.56/2910.237.7.57 – 10.237.7.6210.237.7.63
10510.237.7.64/2910.237.7.65 – 10.237.7.7010.237.7.71
10610.237.7.72/2910.237.7.73 – 10.237.7.7810.237.7.79
10710.237.7.80/2910.237.7.81 – 10.237.7.8610.237.7.87
10810.237.7.88/2910.237.7.89 – 10.237.7.9410.237.7.95
10910.237.7.96/2910.237.7.97 – 10.237.7.10210.237.7.103
11010.237.7.104/2910.237.7.105 – 10.237.7.11010.237.7.111
11110.237.7.112/2910.237.7.113 – 10.237.7.11810.237.7.119
11210.237.7.120/2910.237.7.121 – 10.237.7.12610.237.7.127
11310.237.7.128/2910.237.7.129 – 10.237.7.13410.237.7.135
11410.237.7.136/2910.237.7.137 – 10.237.7.14210.237.7.143
11510.237.7.144/2910.237.7.145 – 10.237.7.15010.237.7.151
11610.237.7.152/2910.237.7.153 – 10.237.7.15810.237.7.159
11710.237.7.160/2910.237.7.161 – 10.237.7.16610.237.7.167
11810.237.7.168/2910.237.7.169 – 10.237.7.17410.237.7.175
11910.237.7.176/2910.237.7.177 – 10.237.7.18210.237.7.183
12010.237.7.184/2910.237.7.185 – 10.237.7.19010.237.7.191
12110.237.7.192/2910.237.7.193 – 10.237.7.19810.237.7.199
12210.237.7.200/2910.237.7.201 – 10.237.7.20610.237.7.207
12310.237.7.208/2910.237.7.209 – 10.237.7.21410.237.7.215
12410.237.7.216/2910.237.7.217 – 10.237.7.22210.237.7.223
12510.237.7.224/2910.237.7.225 – 10.237.7.23010.237.7.231
12610.237.7.232/2910.237.7.233 – 10.237.7.23810.237.7.239
12710.237.7.240/2910.237.7.241 – 10.237.7.24610.237.7.247
12810.237.7.248/2910.237.7.249 – 10.237.7.25410.237.7.255
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 →