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)10.166.64.0/22
network10.166.64.0/22
broadcast10.166.67.255
first host10.166.64.1
last host10.166.67.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.166.64.0/22
address00001010.10100110.01000000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.10100110.01000000.00000000
broadcast00001010.10100110.01000011.11111111
green = network part, grey = host part
hex0x0aa64000
decimal178667520
reverse dns0.64.166.10.in-addr.arpa
ipv4-mapped::ffff:aa6:4000

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.166.64.0/2910.166.64.1 – 10.166.64.610.166.64.7
210.166.64.8/2910.166.64.9 – 10.166.64.1410.166.64.15
310.166.64.16/2910.166.64.17 – 10.166.64.2210.166.64.23
410.166.64.24/2910.166.64.25 – 10.166.64.3010.166.64.31
510.166.64.32/2910.166.64.33 – 10.166.64.3810.166.64.39
610.166.64.40/2910.166.64.41 – 10.166.64.4610.166.64.47
710.166.64.48/2910.166.64.49 – 10.166.64.5410.166.64.55
810.166.64.56/2910.166.64.57 – 10.166.64.6210.166.64.63
910.166.64.64/2910.166.64.65 – 10.166.64.7010.166.64.71
1010.166.64.72/2910.166.64.73 – 10.166.64.7810.166.64.79
1110.166.64.80/2910.166.64.81 – 10.166.64.8610.166.64.87
1210.166.64.88/2910.166.64.89 – 10.166.64.9410.166.64.95
1310.166.64.96/2910.166.64.97 – 10.166.64.10210.166.64.103
1410.166.64.104/2910.166.64.105 – 10.166.64.11010.166.64.111
1510.166.64.112/2910.166.64.113 – 10.166.64.11810.166.64.119
1610.166.64.120/2910.166.64.121 – 10.166.64.12610.166.64.127
1710.166.64.128/2910.166.64.129 – 10.166.64.13410.166.64.135
1810.166.64.136/2910.166.64.137 – 10.166.64.14210.166.64.143
1910.166.64.144/2910.166.64.145 – 10.166.64.15010.166.64.151
2010.166.64.152/2910.166.64.153 – 10.166.64.15810.166.64.159
2110.166.64.160/2910.166.64.161 – 10.166.64.16610.166.64.167
2210.166.64.168/2910.166.64.169 – 10.166.64.17410.166.64.175
2310.166.64.176/2910.166.64.177 – 10.166.64.18210.166.64.183
2410.166.64.184/2910.166.64.185 – 10.166.64.19010.166.64.191
2510.166.64.192/2910.166.64.193 – 10.166.64.19810.166.64.199
2610.166.64.200/2910.166.64.201 – 10.166.64.20610.166.64.207
2710.166.64.208/2910.166.64.209 – 10.166.64.21410.166.64.215
2810.166.64.216/2910.166.64.217 – 10.166.64.22210.166.64.223
2910.166.64.224/2910.166.64.225 – 10.166.64.23010.166.64.231
3010.166.64.232/2910.166.64.233 – 10.166.64.23810.166.64.239
3110.166.64.240/2910.166.64.241 – 10.166.64.24610.166.64.247
3210.166.64.248/2910.166.64.249 – 10.166.64.25410.166.64.255
3310.166.65.0/2910.166.65.1 – 10.166.65.610.166.65.7
3410.166.65.8/2910.166.65.9 – 10.166.65.1410.166.65.15
3510.166.65.16/2910.166.65.17 – 10.166.65.2210.166.65.23
3610.166.65.24/2910.166.65.25 – 10.166.65.3010.166.65.31
3710.166.65.32/2910.166.65.33 – 10.166.65.3810.166.65.39
3810.166.65.40/2910.166.65.41 – 10.166.65.4610.166.65.47
3910.166.65.48/2910.166.65.49 – 10.166.65.5410.166.65.55
4010.166.65.56/2910.166.65.57 – 10.166.65.6210.166.65.63
4110.166.65.64/2910.166.65.65 – 10.166.65.7010.166.65.71
4210.166.65.72/2910.166.65.73 – 10.166.65.7810.166.65.79
4310.166.65.80/2910.166.65.81 – 10.166.65.8610.166.65.87
4410.166.65.88/2910.166.65.89 – 10.166.65.9410.166.65.95
4510.166.65.96/2910.166.65.97 – 10.166.65.10210.166.65.103
4610.166.65.104/2910.166.65.105 – 10.166.65.11010.166.65.111
4710.166.65.112/2910.166.65.113 – 10.166.65.11810.166.65.119
4810.166.65.120/2910.166.65.121 – 10.166.65.12610.166.65.127
4910.166.65.128/2910.166.65.129 – 10.166.65.13410.166.65.135
5010.166.65.136/2910.166.65.137 – 10.166.65.14210.166.65.143
5110.166.65.144/2910.166.65.145 – 10.166.65.15010.166.65.151
5210.166.65.152/2910.166.65.153 – 10.166.65.15810.166.65.159
5310.166.65.160/2910.166.65.161 – 10.166.65.16610.166.65.167
5410.166.65.168/2910.166.65.169 – 10.166.65.17410.166.65.175
5510.166.65.176/2910.166.65.177 – 10.166.65.18210.166.65.183
5610.166.65.184/2910.166.65.185 – 10.166.65.19010.166.65.191
5710.166.65.192/2910.166.65.193 – 10.166.65.19810.166.65.199
5810.166.65.200/2910.166.65.201 – 10.166.65.20610.166.65.207
5910.166.65.208/2910.166.65.209 – 10.166.65.21410.166.65.215
6010.166.65.216/2910.166.65.217 – 10.166.65.22210.166.65.223
6110.166.65.224/2910.166.65.225 – 10.166.65.23010.166.65.231
6210.166.65.232/2910.166.65.233 – 10.166.65.23810.166.65.239
6310.166.65.240/2910.166.65.241 – 10.166.65.24610.166.65.247
6410.166.65.248/2910.166.65.249 – 10.166.65.25410.166.65.255
6510.166.66.0/2910.166.66.1 – 10.166.66.610.166.66.7
6610.166.66.8/2910.166.66.9 – 10.166.66.1410.166.66.15
6710.166.66.16/2910.166.66.17 – 10.166.66.2210.166.66.23
6810.166.66.24/2910.166.66.25 – 10.166.66.3010.166.66.31
6910.166.66.32/2910.166.66.33 – 10.166.66.3810.166.66.39
7010.166.66.40/2910.166.66.41 – 10.166.66.4610.166.66.47
7110.166.66.48/2910.166.66.49 – 10.166.66.5410.166.66.55
7210.166.66.56/2910.166.66.57 – 10.166.66.6210.166.66.63
7310.166.66.64/2910.166.66.65 – 10.166.66.7010.166.66.71
7410.166.66.72/2910.166.66.73 – 10.166.66.7810.166.66.79
7510.166.66.80/2910.166.66.81 – 10.166.66.8610.166.66.87
7610.166.66.88/2910.166.66.89 – 10.166.66.9410.166.66.95
7710.166.66.96/2910.166.66.97 – 10.166.66.10210.166.66.103
7810.166.66.104/2910.166.66.105 – 10.166.66.11010.166.66.111
7910.166.66.112/2910.166.66.113 – 10.166.66.11810.166.66.119
8010.166.66.120/2910.166.66.121 – 10.166.66.12610.166.66.127
8110.166.66.128/2910.166.66.129 – 10.166.66.13410.166.66.135
8210.166.66.136/2910.166.66.137 – 10.166.66.14210.166.66.143
8310.166.66.144/2910.166.66.145 – 10.166.66.15010.166.66.151
8410.166.66.152/2910.166.66.153 – 10.166.66.15810.166.66.159
8510.166.66.160/2910.166.66.161 – 10.166.66.16610.166.66.167
8610.166.66.168/2910.166.66.169 – 10.166.66.17410.166.66.175
8710.166.66.176/2910.166.66.177 – 10.166.66.18210.166.66.183
8810.166.66.184/2910.166.66.185 – 10.166.66.19010.166.66.191
8910.166.66.192/2910.166.66.193 – 10.166.66.19810.166.66.199
9010.166.66.200/2910.166.66.201 – 10.166.66.20610.166.66.207
9110.166.66.208/2910.166.66.209 – 10.166.66.21410.166.66.215
9210.166.66.216/2910.166.66.217 – 10.166.66.22210.166.66.223
9310.166.66.224/2910.166.66.225 – 10.166.66.23010.166.66.231
9410.166.66.232/2910.166.66.233 – 10.166.66.23810.166.66.239
9510.166.66.240/2910.166.66.241 – 10.166.66.24610.166.66.247
9610.166.66.248/2910.166.66.249 – 10.166.66.25410.166.66.255
9710.166.67.0/2910.166.67.1 – 10.166.67.610.166.67.7
9810.166.67.8/2910.166.67.9 – 10.166.67.1410.166.67.15
9910.166.67.16/2910.166.67.17 – 10.166.67.2210.166.67.23
10010.166.67.24/2910.166.67.25 – 10.166.67.3010.166.67.31
10110.166.67.32/2910.166.67.33 – 10.166.67.3810.166.67.39
10210.166.67.40/2910.166.67.41 – 10.166.67.4610.166.67.47
10310.166.67.48/2910.166.67.49 – 10.166.67.5410.166.67.55
10410.166.67.56/2910.166.67.57 – 10.166.67.6210.166.67.63
10510.166.67.64/2910.166.67.65 – 10.166.67.7010.166.67.71
10610.166.67.72/2910.166.67.73 – 10.166.67.7810.166.67.79
10710.166.67.80/2910.166.67.81 – 10.166.67.8610.166.67.87
10810.166.67.88/2910.166.67.89 – 10.166.67.9410.166.67.95
10910.166.67.96/2910.166.67.97 – 10.166.67.10210.166.67.103
11010.166.67.104/2910.166.67.105 – 10.166.67.11010.166.67.111
11110.166.67.112/2910.166.67.113 – 10.166.67.11810.166.67.119
11210.166.67.120/2910.166.67.121 – 10.166.67.12610.166.67.127
11310.166.67.128/2910.166.67.129 – 10.166.67.13410.166.67.135
11410.166.67.136/2910.166.67.137 – 10.166.67.14210.166.67.143
11510.166.67.144/2910.166.67.145 – 10.166.67.15010.166.67.151
11610.166.67.152/2910.166.67.153 – 10.166.67.15810.166.67.159
11710.166.67.160/2910.166.67.161 – 10.166.67.16610.166.67.167
11810.166.67.168/2910.166.67.169 – 10.166.67.17410.166.67.175
11910.166.67.176/2910.166.67.177 – 10.166.67.18210.166.67.183
12010.166.67.184/2910.166.67.185 – 10.166.67.19010.166.67.191
12110.166.67.192/2910.166.67.193 – 10.166.67.19810.166.67.199
12210.166.67.200/2910.166.67.201 – 10.166.67.20610.166.67.207
12310.166.67.208/2910.166.67.209 – 10.166.67.21410.166.67.215
12410.166.67.216/2910.166.67.217 – 10.166.67.22210.166.67.223
12510.166.67.224/2910.166.67.225 – 10.166.67.23010.166.67.231
12610.166.67.232/2910.166.67.233 – 10.166.67.23810.166.67.239
12710.166.67.240/2910.166.67.241 – 10.166.67.24610.166.67.247
12810.166.67.248/2910.166.67.249 – 10.166.67.25410.166.67.255
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 →