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)10.2.100.0/22
network10.2.100.0/22
broadcast10.2.103.255
first host10.2.100.1
last host10.2.103.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.2.100.0/22
address00001010.00000010.01100100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00000010.01100100.00000000
broadcast00001010.00000010.01100111.11111111
green = network part, grey = host part
hex0x0a026400
decimal167928832
reverse dns0.100.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:6400

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.100.0/2910.2.100.1 – 10.2.100.610.2.100.7
210.2.100.8/2910.2.100.9 – 10.2.100.1410.2.100.15
310.2.100.16/2910.2.100.17 – 10.2.100.2210.2.100.23
410.2.100.24/2910.2.100.25 – 10.2.100.3010.2.100.31
510.2.100.32/2910.2.100.33 – 10.2.100.3810.2.100.39
610.2.100.40/2910.2.100.41 – 10.2.100.4610.2.100.47
710.2.100.48/2910.2.100.49 – 10.2.100.5410.2.100.55
810.2.100.56/2910.2.100.57 – 10.2.100.6210.2.100.63
910.2.100.64/2910.2.100.65 – 10.2.100.7010.2.100.71
1010.2.100.72/2910.2.100.73 – 10.2.100.7810.2.100.79
1110.2.100.80/2910.2.100.81 – 10.2.100.8610.2.100.87
1210.2.100.88/2910.2.100.89 – 10.2.100.9410.2.100.95
1310.2.100.96/2910.2.100.97 – 10.2.100.10210.2.100.103
1410.2.100.104/2910.2.100.105 – 10.2.100.11010.2.100.111
1510.2.100.112/2910.2.100.113 – 10.2.100.11810.2.100.119
1610.2.100.120/2910.2.100.121 – 10.2.100.12610.2.100.127
1710.2.100.128/2910.2.100.129 – 10.2.100.13410.2.100.135
1810.2.100.136/2910.2.100.137 – 10.2.100.14210.2.100.143
1910.2.100.144/2910.2.100.145 – 10.2.100.15010.2.100.151
2010.2.100.152/2910.2.100.153 – 10.2.100.15810.2.100.159
2110.2.100.160/2910.2.100.161 – 10.2.100.16610.2.100.167
2210.2.100.168/2910.2.100.169 – 10.2.100.17410.2.100.175
2310.2.100.176/2910.2.100.177 – 10.2.100.18210.2.100.183
2410.2.100.184/2910.2.100.185 – 10.2.100.19010.2.100.191
2510.2.100.192/2910.2.100.193 – 10.2.100.19810.2.100.199
2610.2.100.200/2910.2.100.201 – 10.2.100.20610.2.100.207
2710.2.100.208/2910.2.100.209 – 10.2.100.21410.2.100.215
2810.2.100.216/2910.2.100.217 – 10.2.100.22210.2.100.223
2910.2.100.224/2910.2.100.225 – 10.2.100.23010.2.100.231
3010.2.100.232/2910.2.100.233 – 10.2.100.23810.2.100.239
3110.2.100.240/2910.2.100.241 – 10.2.100.24610.2.100.247
3210.2.100.248/2910.2.100.249 – 10.2.100.25410.2.100.255
3310.2.101.0/2910.2.101.1 – 10.2.101.610.2.101.7
3410.2.101.8/2910.2.101.9 – 10.2.101.1410.2.101.15
3510.2.101.16/2910.2.101.17 – 10.2.101.2210.2.101.23
3610.2.101.24/2910.2.101.25 – 10.2.101.3010.2.101.31
3710.2.101.32/2910.2.101.33 – 10.2.101.3810.2.101.39
3810.2.101.40/2910.2.101.41 – 10.2.101.4610.2.101.47
3910.2.101.48/2910.2.101.49 – 10.2.101.5410.2.101.55
4010.2.101.56/2910.2.101.57 – 10.2.101.6210.2.101.63
4110.2.101.64/2910.2.101.65 – 10.2.101.7010.2.101.71
4210.2.101.72/2910.2.101.73 – 10.2.101.7810.2.101.79
4310.2.101.80/2910.2.101.81 – 10.2.101.8610.2.101.87
4410.2.101.88/2910.2.101.89 – 10.2.101.9410.2.101.95
4510.2.101.96/2910.2.101.97 – 10.2.101.10210.2.101.103
4610.2.101.104/2910.2.101.105 – 10.2.101.11010.2.101.111
4710.2.101.112/2910.2.101.113 – 10.2.101.11810.2.101.119
4810.2.101.120/2910.2.101.121 – 10.2.101.12610.2.101.127
4910.2.101.128/2910.2.101.129 – 10.2.101.13410.2.101.135
5010.2.101.136/2910.2.101.137 – 10.2.101.14210.2.101.143
5110.2.101.144/2910.2.101.145 – 10.2.101.15010.2.101.151
5210.2.101.152/2910.2.101.153 – 10.2.101.15810.2.101.159
5310.2.101.160/2910.2.101.161 – 10.2.101.16610.2.101.167
5410.2.101.168/2910.2.101.169 – 10.2.101.17410.2.101.175
5510.2.101.176/2910.2.101.177 – 10.2.101.18210.2.101.183
5610.2.101.184/2910.2.101.185 – 10.2.101.19010.2.101.191
5710.2.101.192/2910.2.101.193 – 10.2.101.19810.2.101.199
5810.2.101.200/2910.2.101.201 – 10.2.101.20610.2.101.207
5910.2.101.208/2910.2.101.209 – 10.2.101.21410.2.101.215
6010.2.101.216/2910.2.101.217 – 10.2.101.22210.2.101.223
6110.2.101.224/2910.2.101.225 – 10.2.101.23010.2.101.231
6210.2.101.232/2910.2.101.233 – 10.2.101.23810.2.101.239
6310.2.101.240/2910.2.101.241 – 10.2.101.24610.2.101.247
6410.2.101.248/2910.2.101.249 – 10.2.101.25410.2.101.255
6510.2.102.0/2910.2.102.1 – 10.2.102.610.2.102.7
6610.2.102.8/2910.2.102.9 – 10.2.102.1410.2.102.15
6710.2.102.16/2910.2.102.17 – 10.2.102.2210.2.102.23
6810.2.102.24/2910.2.102.25 – 10.2.102.3010.2.102.31
6910.2.102.32/2910.2.102.33 – 10.2.102.3810.2.102.39
7010.2.102.40/2910.2.102.41 – 10.2.102.4610.2.102.47
7110.2.102.48/2910.2.102.49 – 10.2.102.5410.2.102.55
7210.2.102.56/2910.2.102.57 – 10.2.102.6210.2.102.63
7310.2.102.64/2910.2.102.65 – 10.2.102.7010.2.102.71
7410.2.102.72/2910.2.102.73 – 10.2.102.7810.2.102.79
7510.2.102.80/2910.2.102.81 – 10.2.102.8610.2.102.87
7610.2.102.88/2910.2.102.89 – 10.2.102.9410.2.102.95
7710.2.102.96/2910.2.102.97 – 10.2.102.10210.2.102.103
7810.2.102.104/2910.2.102.105 – 10.2.102.11010.2.102.111
7910.2.102.112/2910.2.102.113 – 10.2.102.11810.2.102.119
8010.2.102.120/2910.2.102.121 – 10.2.102.12610.2.102.127
8110.2.102.128/2910.2.102.129 – 10.2.102.13410.2.102.135
8210.2.102.136/2910.2.102.137 – 10.2.102.14210.2.102.143
8310.2.102.144/2910.2.102.145 – 10.2.102.15010.2.102.151
8410.2.102.152/2910.2.102.153 – 10.2.102.15810.2.102.159
8510.2.102.160/2910.2.102.161 – 10.2.102.16610.2.102.167
8610.2.102.168/2910.2.102.169 – 10.2.102.17410.2.102.175
8710.2.102.176/2910.2.102.177 – 10.2.102.18210.2.102.183
8810.2.102.184/2910.2.102.185 – 10.2.102.19010.2.102.191
8910.2.102.192/2910.2.102.193 – 10.2.102.19810.2.102.199
9010.2.102.200/2910.2.102.201 – 10.2.102.20610.2.102.207
9110.2.102.208/2910.2.102.209 – 10.2.102.21410.2.102.215
9210.2.102.216/2910.2.102.217 – 10.2.102.22210.2.102.223
9310.2.102.224/2910.2.102.225 – 10.2.102.23010.2.102.231
9410.2.102.232/2910.2.102.233 – 10.2.102.23810.2.102.239
9510.2.102.240/2910.2.102.241 – 10.2.102.24610.2.102.247
9610.2.102.248/2910.2.102.249 – 10.2.102.25410.2.102.255
9710.2.103.0/2910.2.103.1 – 10.2.103.610.2.103.7
9810.2.103.8/2910.2.103.9 – 10.2.103.1410.2.103.15
9910.2.103.16/2910.2.103.17 – 10.2.103.2210.2.103.23
10010.2.103.24/2910.2.103.25 – 10.2.103.3010.2.103.31
10110.2.103.32/2910.2.103.33 – 10.2.103.3810.2.103.39
10210.2.103.40/2910.2.103.41 – 10.2.103.4610.2.103.47
10310.2.103.48/2910.2.103.49 – 10.2.103.5410.2.103.55
10410.2.103.56/2910.2.103.57 – 10.2.103.6210.2.103.63
10510.2.103.64/2910.2.103.65 – 10.2.103.7010.2.103.71
10610.2.103.72/2910.2.103.73 – 10.2.103.7810.2.103.79
10710.2.103.80/2910.2.103.81 – 10.2.103.8610.2.103.87
10810.2.103.88/2910.2.103.89 – 10.2.103.9410.2.103.95
10910.2.103.96/2910.2.103.97 – 10.2.103.10210.2.103.103
11010.2.103.104/2910.2.103.105 – 10.2.103.11010.2.103.111
11110.2.103.112/2910.2.103.113 – 10.2.103.11810.2.103.119
11210.2.103.120/2910.2.103.121 – 10.2.103.12610.2.103.127
11310.2.103.128/2910.2.103.129 – 10.2.103.13410.2.103.135
11410.2.103.136/2910.2.103.137 – 10.2.103.14210.2.103.143
11510.2.103.144/2910.2.103.145 – 10.2.103.15010.2.103.151
11610.2.103.152/2910.2.103.153 – 10.2.103.15810.2.103.159
11710.2.103.160/2910.2.103.161 – 10.2.103.16610.2.103.167
11810.2.103.168/2910.2.103.169 – 10.2.103.17410.2.103.175
11910.2.103.176/2910.2.103.177 – 10.2.103.18210.2.103.183
12010.2.103.184/2910.2.103.185 – 10.2.103.19010.2.103.191
12110.2.103.192/2910.2.103.193 – 10.2.103.19810.2.103.199
12210.2.103.200/2910.2.103.201 – 10.2.103.20610.2.103.207
12310.2.103.208/2910.2.103.209 – 10.2.103.21410.2.103.215
12410.2.103.216/2910.2.103.217 – 10.2.103.22210.2.103.223
12510.2.103.224/2910.2.103.225 – 10.2.103.23010.2.103.231
12610.2.103.232/2910.2.103.233 – 10.2.103.23810.2.103.239
12710.2.103.240/2910.2.103.241 – 10.2.103.24610.2.103.247
12810.2.103.248/2910.2.103.249 – 10.2.103.25410.2.103.255
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 →