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)10.86.40.0/22
network10.86.40.0/22
broadcast10.86.43.255
first host10.86.40.1
last host10.86.43.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.86.40.0/22
address00001010.01010110.00101000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01010110.00101000.00000000
broadcast00001010.01010110.00101011.11111111
green = network part, grey = host part
hex0x0a562800
decimal173418496
reverse dns0.40.86.10.in-addr.arpa
ipv4-mapped::ffff:a56:2800

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.86.40.0/2910.86.40.1 – 10.86.40.610.86.40.7
210.86.40.8/2910.86.40.9 – 10.86.40.1410.86.40.15
310.86.40.16/2910.86.40.17 – 10.86.40.2210.86.40.23
410.86.40.24/2910.86.40.25 – 10.86.40.3010.86.40.31
510.86.40.32/2910.86.40.33 – 10.86.40.3810.86.40.39
610.86.40.40/2910.86.40.41 – 10.86.40.4610.86.40.47
710.86.40.48/2910.86.40.49 – 10.86.40.5410.86.40.55
810.86.40.56/2910.86.40.57 – 10.86.40.6210.86.40.63
910.86.40.64/2910.86.40.65 – 10.86.40.7010.86.40.71
1010.86.40.72/2910.86.40.73 – 10.86.40.7810.86.40.79
1110.86.40.80/2910.86.40.81 – 10.86.40.8610.86.40.87
1210.86.40.88/2910.86.40.89 – 10.86.40.9410.86.40.95
1310.86.40.96/2910.86.40.97 – 10.86.40.10210.86.40.103
1410.86.40.104/2910.86.40.105 – 10.86.40.11010.86.40.111
1510.86.40.112/2910.86.40.113 – 10.86.40.11810.86.40.119
1610.86.40.120/2910.86.40.121 – 10.86.40.12610.86.40.127
1710.86.40.128/2910.86.40.129 – 10.86.40.13410.86.40.135
1810.86.40.136/2910.86.40.137 – 10.86.40.14210.86.40.143
1910.86.40.144/2910.86.40.145 – 10.86.40.15010.86.40.151
2010.86.40.152/2910.86.40.153 – 10.86.40.15810.86.40.159
2110.86.40.160/2910.86.40.161 – 10.86.40.16610.86.40.167
2210.86.40.168/2910.86.40.169 – 10.86.40.17410.86.40.175
2310.86.40.176/2910.86.40.177 – 10.86.40.18210.86.40.183
2410.86.40.184/2910.86.40.185 – 10.86.40.19010.86.40.191
2510.86.40.192/2910.86.40.193 – 10.86.40.19810.86.40.199
2610.86.40.200/2910.86.40.201 – 10.86.40.20610.86.40.207
2710.86.40.208/2910.86.40.209 – 10.86.40.21410.86.40.215
2810.86.40.216/2910.86.40.217 – 10.86.40.22210.86.40.223
2910.86.40.224/2910.86.40.225 – 10.86.40.23010.86.40.231
3010.86.40.232/2910.86.40.233 – 10.86.40.23810.86.40.239
3110.86.40.240/2910.86.40.241 – 10.86.40.24610.86.40.247
3210.86.40.248/2910.86.40.249 – 10.86.40.25410.86.40.255
3310.86.41.0/2910.86.41.1 – 10.86.41.610.86.41.7
3410.86.41.8/2910.86.41.9 – 10.86.41.1410.86.41.15
3510.86.41.16/2910.86.41.17 – 10.86.41.2210.86.41.23
3610.86.41.24/2910.86.41.25 – 10.86.41.3010.86.41.31
3710.86.41.32/2910.86.41.33 – 10.86.41.3810.86.41.39
3810.86.41.40/2910.86.41.41 – 10.86.41.4610.86.41.47
3910.86.41.48/2910.86.41.49 – 10.86.41.5410.86.41.55
4010.86.41.56/2910.86.41.57 – 10.86.41.6210.86.41.63
4110.86.41.64/2910.86.41.65 – 10.86.41.7010.86.41.71
4210.86.41.72/2910.86.41.73 – 10.86.41.7810.86.41.79
4310.86.41.80/2910.86.41.81 – 10.86.41.8610.86.41.87
4410.86.41.88/2910.86.41.89 – 10.86.41.9410.86.41.95
4510.86.41.96/2910.86.41.97 – 10.86.41.10210.86.41.103
4610.86.41.104/2910.86.41.105 – 10.86.41.11010.86.41.111
4710.86.41.112/2910.86.41.113 – 10.86.41.11810.86.41.119
4810.86.41.120/2910.86.41.121 – 10.86.41.12610.86.41.127
4910.86.41.128/2910.86.41.129 – 10.86.41.13410.86.41.135
5010.86.41.136/2910.86.41.137 – 10.86.41.14210.86.41.143
5110.86.41.144/2910.86.41.145 – 10.86.41.15010.86.41.151
5210.86.41.152/2910.86.41.153 – 10.86.41.15810.86.41.159
5310.86.41.160/2910.86.41.161 – 10.86.41.16610.86.41.167
5410.86.41.168/2910.86.41.169 – 10.86.41.17410.86.41.175
5510.86.41.176/2910.86.41.177 – 10.86.41.18210.86.41.183
5610.86.41.184/2910.86.41.185 – 10.86.41.19010.86.41.191
5710.86.41.192/2910.86.41.193 – 10.86.41.19810.86.41.199
5810.86.41.200/2910.86.41.201 – 10.86.41.20610.86.41.207
5910.86.41.208/2910.86.41.209 – 10.86.41.21410.86.41.215
6010.86.41.216/2910.86.41.217 – 10.86.41.22210.86.41.223
6110.86.41.224/2910.86.41.225 – 10.86.41.23010.86.41.231
6210.86.41.232/2910.86.41.233 – 10.86.41.23810.86.41.239
6310.86.41.240/2910.86.41.241 – 10.86.41.24610.86.41.247
6410.86.41.248/2910.86.41.249 – 10.86.41.25410.86.41.255
6510.86.42.0/2910.86.42.1 – 10.86.42.610.86.42.7
6610.86.42.8/2910.86.42.9 – 10.86.42.1410.86.42.15
6710.86.42.16/2910.86.42.17 – 10.86.42.2210.86.42.23
6810.86.42.24/2910.86.42.25 – 10.86.42.3010.86.42.31
6910.86.42.32/2910.86.42.33 – 10.86.42.3810.86.42.39
7010.86.42.40/2910.86.42.41 – 10.86.42.4610.86.42.47
7110.86.42.48/2910.86.42.49 – 10.86.42.5410.86.42.55
7210.86.42.56/2910.86.42.57 – 10.86.42.6210.86.42.63
7310.86.42.64/2910.86.42.65 – 10.86.42.7010.86.42.71
7410.86.42.72/2910.86.42.73 – 10.86.42.7810.86.42.79
7510.86.42.80/2910.86.42.81 – 10.86.42.8610.86.42.87
7610.86.42.88/2910.86.42.89 – 10.86.42.9410.86.42.95
7710.86.42.96/2910.86.42.97 – 10.86.42.10210.86.42.103
7810.86.42.104/2910.86.42.105 – 10.86.42.11010.86.42.111
7910.86.42.112/2910.86.42.113 – 10.86.42.11810.86.42.119
8010.86.42.120/2910.86.42.121 – 10.86.42.12610.86.42.127
8110.86.42.128/2910.86.42.129 – 10.86.42.13410.86.42.135
8210.86.42.136/2910.86.42.137 – 10.86.42.14210.86.42.143
8310.86.42.144/2910.86.42.145 – 10.86.42.15010.86.42.151
8410.86.42.152/2910.86.42.153 – 10.86.42.15810.86.42.159
8510.86.42.160/2910.86.42.161 – 10.86.42.16610.86.42.167
8610.86.42.168/2910.86.42.169 – 10.86.42.17410.86.42.175
8710.86.42.176/2910.86.42.177 – 10.86.42.18210.86.42.183
8810.86.42.184/2910.86.42.185 – 10.86.42.19010.86.42.191
8910.86.42.192/2910.86.42.193 – 10.86.42.19810.86.42.199
9010.86.42.200/2910.86.42.201 – 10.86.42.20610.86.42.207
9110.86.42.208/2910.86.42.209 – 10.86.42.21410.86.42.215
9210.86.42.216/2910.86.42.217 – 10.86.42.22210.86.42.223
9310.86.42.224/2910.86.42.225 – 10.86.42.23010.86.42.231
9410.86.42.232/2910.86.42.233 – 10.86.42.23810.86.42.239
9510.86.42.240/2910.86.42.241 – 10.86.42.24610.86.42.247
9610.86.42.248/2910.86.42.249 – 10.86.42.25410.86.42.255
9710.86.43.0/2910.86.43.1 – 10.86.43.610.86.43.7
9810.86.43.8/2910.86.43.9 – 10.86.43.1410.86.43.15
9910.86.43.16/2910.86.43.17 – 10.86.43.2210.86.43.23
10010.86.43.24/2910.86.43.25 – 10.86.43.3010.86.43.31
10110.86.43.32/2910.86.43.33 – 10.86.43.3810.86.43.39
10210.86.43.40/2910.86.43.41 – 10.86.43.4610.86.43.47
10310.86.43.48/2910.86.43.49 – 10.86.43.5410.86.43.55
10410.86.43.56/2910.86.43.57 – 10.86.43.6210.86.43.63
10510.86.43.64/2910.86.43.65 – 10.86.43.7010.86.43.71
10610.86.43.72/2910.86.43.73 – 10.86.43.7810.86.43.79
10710.86.43.80/2910.86.43.81 – 10.86.43.8610.86.43.87
10810.86.43.88/2910.86.43.89 – 10.86.43.9410.86.43.95
10910.86.43.96/2910.86.43.97 – 10.86.43.10210.86.43.103
11010.86.43.104/2910.86.43.105 – 10.86.43.11010.86.43.111
11110.86.43.112/2910.86.43.113 – 10.86.43.11810.86.43.119
11210.86.43.120/2910.86.43.121 – 10.86.43.12610.86.43.127
11310.86.43.128/2910.86.43.129 – 10.86.43.13410.86.43.135
11410.86.43.136/2910.86.43.137 – 10.86.43.14210.86.43.143
11510.86.43.144/2910.86.43.145 – 10.86.43.15010.86.43.151
11610.86.43.152/2910.86.43.153 – 10.86.43.15810.86.43.159
11710.86.43.160/2910.86.43.161 – 10.86.43.16610.86.43.167
11810.86.43.168/2910.86.43.169 – 10.86.43.17410.86.43.175
11910.86.43.176/2910.86.43.177 – 10.86.43.18210.86.43.183
12010.86.43.184/2910.86.43.185 – 10.86.43.19010.86.43.191
12110.86.43.192/2910.86.43.193 – 10.86.43.19810.86.43.199
12210.86.43.200/2910.86.43.201 – 10.86.43.20610.86.43.207
12310.86.43.208/2910.86.43.209 – 10.86.43.21410.86.43.215
12410.86.43.216/2910.86.43.217 – 10.86.43.22210.86.43.223
12510.86.43.224/2910.86.43.225 – 10.86.43.23010.86.43.231
12610.86.43.232/2910.86.43.233 – 10.86.43.23810.86.43.239
12710.86.43.240/2910.86.43.241 – 10.86.43.24610.86.43.247
12810.86.43.248/2910.86.43.249 – 10.86.43.25410.86.43.255
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 →