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)10.2.80.0/22
network10.2.80.0/22
broadcast10.2.83.255
first host10.2.80.1
last host10.2.83.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.2.80.0/22
address00001010.00000010.01010000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00000010.01010000.00000000
broadcast00001010.00000010.01010011.11111111
green = network part, grey = host part
hex0x0a025000
decimal167923712
reverse dns0.80.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:5000

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.80.0/2910.2.80.1 – 10.2.80.610.2.80.7
210.2.80.8/2910.2.80.9 – 10.2.80.1410.2.80.15
310.2.80.16/2910.2.80.17 – 10.2.80.2210.2.80.23
410.2.80.24/2910.2.80.25 – 10.2.80.3010.2.80.31
510.2.80.32/2910.2.80.33 – 10.2.80.3810.2.80.39
610.2.80.40/2910.2.80.41 – 10.2.80.4610.2.80.47
710.2.80.48/2910.2.80.49 – 10.2.80.5410.2.80.55
810.2.80.56/2910.2.80.57 – 10.2.80.6210.2.80.63
910.2.80.64/2910.2.80.65 – 10.2.80.7010.2.80.71
1010.2.80.72/2910.2.80.73 – 10.2.80.7810.2.80.79
1110.2.80.80/2910.2.80.81 – 10.2.80.8610.2.80.87
1210.2.80.88/2910.2.80.89 – 10.2.80.9410.2.80.95
1310.2.80.96/2910.2.80.97 – 10.2.80.10210.2.80.103
1410.2.80.104/2910.2.80.105 – 10.2.80.11010.2.80.111
1510.2.80.112/2910.2.80.113 – 10.2.80.11810.2.80.119
1610.2.80.120/2910.2.80.121 – 10.2.80.12610.2.80.127
1710.2.80.128/2910.2.80.129 – 10.2.80.13410.2.80.135
1810.2.80.136/2910.2.80.137 – 10.2.80.14210.2.80.143
1910.2.80.144/2910.2.80.145 – 10.2.80.15010.2.80.151
2010.2.80.152/2910.2.80.153 – 10.2.80.15810.2.80.159
2110.2.80.160/2910.2.80.161 – 10.2.80.16610.2.80.167
2210.2.80.168/2910.2.80.169 – 10.2.80.17410.2.80.175
2310.2.80.176/2910.2.80.177 – 10.2.80.18210.2.80.183
2410.2.80.184/2910.2.80.185 – 10.2.80.19010.2.80.191
2510.2.80.192/2910.2.80.193 – 10.2.80.19810.2.80.199
2610.2.80.200/2910.2.80.201 – 10.2.80.20610.2.80.207
2710.2.80.208/2910.2.80.209 – 10.2.80.21410.2.80.215
2810.2.80.216/2910.2.80.217 – 10.2.80.22210.2.80.223
2910.2.80.224/2910.2.80.225 – 10.2.80.23010.2.80.231
3010.2.80.232/2910.2.80.233 – 10.2.80.23810.2.80.239
3110.2.80.240/2910.2.80.241 – 10.2.80.24610.2.80.247
3210.2.80.248/2910.2.80.249 – 10.2.80.25410.2.80.255
3310.2.81.0/2910.2.81.1 – 10.2.81.610.2.81.7
3410.2.81.8/2910.2.81.9 – 10.2.81.1410.2.81.15
3510.2.81.16/2910.2.81.17 – 10.2.81.2210.2.81.23
3610.2.81.24/2910.2.81.25 – 10.2.81.3010.2.81.31
3710.2.81.32/2910.2.81.33 – 10.2.81.3810.2.81.39
3810.2.81.40/2910.2.81.41 – 10.2.81.4610.2.81.47
3910.2.81.48/2910.2.81.49 – 10.2.81.5410.2.81.55
4010.2.81.56/2910.2.81.57 – 10.2.81.6210.2.81.63
4110.2.81.64/2910.2.81.65 – 10.2.81.7010.2.81.71
4210.2.81.72/2910.2.81.73 – 10.2.81.7810.2.81.79
4310.2.81.80/2910.2.81.81 – 10.2.81.8610.2.81.87
4410.2.81.88/2910.2.81.89 – 10.2.81.9410.2.81.95
4510.2.81.96/2910.2.81.97 – 10.2.81.10210.2.81.103
4610.2.81.104/2910.2.81.105 – 10.2.81.11010.2.81.111
4710.2.81.112/2910.2.81.113 – 10.2.81.11810.2.81.119
4810.2.81.120/2910.2.81.121 – 10.2.81.12610.2.81.127
4910.2.81.128/2910.2.81.129 – 10.2.81.13410.2.81.135
5010.2.81.136/2910.2.81.137 – 10.2.81.14210.2.81.143
5110.2.81.144/2910.2.81.145 – 10.2.81.15010.2.81.151
5210.2.81.152/2910.2.81.153 – 10.2.81.15810.2.81.159
5310.2.81.160/2910.2.81.161 – 10.2.81.16610.2.81.167
5410.2.81.168/2910.2.81.169 – 10.2.81.17410.2.81.175
5510.2.81.176/2910.2.81.177 – 10.2.81.18210.2.81.183
5610.2.81.184/2910.2.81.185 – 10.2.81.19010.2.81.191
5710.2.81.192/2910.2.81.193 – 10.2.81.19810.2.81.199
5810.2.81.200/2910.2.81.201 – 10.2.81.20610.2.81.207
5910.2.81.208/2910.2.81.209 – 10.2.81.21410.2.81.215
6010.2.81.216/2910.2.81.217 – 10.2.81.22210.2.81.223
6110.2.81.224/2910.2.81.225 – 10.2.81.23010.2.81.231
6210.2.81.232/2910.2.81.233 – 10.2.81.23810.2.81.239
6310.2.81.240/2910.2.81.241 – 10.2.81.24610.2.81.247
6410.2.81.248/2910.2.81.249 – 10.2.81.25410.2.81.255
6510.2.82.0/2910.2.82.1 – 10.2.82.610.2.82.7
6610.2.82.8/2910.2.82.9 – 10.2.82.1410.2.82.15
6710.2.82.16/2910.2.82.17 – 10.2.82.2210.2.82.23
6810.2.82.24/2910.2.82.25 – 10.2.82.3010.2.82.31
6910.2.82.32/2910.2.82.33 – 10.2.82.3810.2.82.39
7010.2.82.40/2910.2.82.41 – 10.2.82.4610.2.82.47
7110.2.82.48/2910.2.82.49 – 10.2.82.5410.2.82.55
7210.2.82.56/2910.2.82.57 – 10.2.82.6210.2.82.63
7310.2.82.64/2910.2.82.65 – 10.2.82.7010.2.82.71
7410.2.82.72/2910.2.82.73 – 10.2.82.7810.2.82.79
7510.2.82.80/2910.2.82.81 – 10.2.82.8610.2.82.87
7610.2.82.88/2910.2.82.89 – 10.2.82.9410.2.82.95
7710.2.82.96/2910.2.82.97 – 10.2.82.10210.2.82.103
7810.2.82.104/2910.2.82.105 – 10.2.82.11010.2.82.111
7910.2.82.112/2910.2.82.113 – 10.2.82.11810.2.82.119
8010.2.82.120/2910.2.82.121 – 10.2.82.12610.2.82.127
8110.2.82.128/2910.2.82.129 – 10.2.82.13410.2.82.135
8210.2.82.136/2910.2.82.137 – 10.2.82.14210.2.82.143
8310.2.82.144/2910.2.82.145 – 10.2.82.15010.2.82.151
8410.2.82.152/2910.2.82.153 – 10.2.82.15810.2.82.159
8510.2.82.160/2910.2.82.161 – 10.2.82.16610.2.82.167
8610.2.82.168/2910.2.82.169 – 10.2.82.17410.2.82.175
8710.2.82.176/2910.2.82.177 – 10.2.82.18210.2.82.183
8810.2.82.184/2910.2.82.185 – 10.2.82.19010.2.82.191
8910.2.82.192/2910.2.82.193 – 10.2.82.19810.2.82.199
9010.2.82.200/2910.2.82.201 – 10.2.82.20610.2.82.207
9110.2.82.208/2910.2.82.209 – 10.2.82.21410.2.82.215
9210.2.82.216/2910.2.82.217 – 10.2.82.22210.2.82.223
9310.2.82.224/2910.2.82.225 – 10.2.82.23010.2.82.231
9410.2.82.232/2910.2.82.233 – 10.2.82.23810.2.82.239
9510.2.82.240/2910.2.82.241 – 10.2.82.24610.2.82.247
9610.2.82.248/2910.2.82.249 – 10.2.82.25410.2.82.255
9710.2.83.0/2910.2.83.1 – 10.2.83.610.2.83.7
9810.2.83.8/2910.2.83.9 – 10.2.83.1410.2.83.15
9910.2.83.16/2910.2.83.17 – 10.2.83.2210.2.83.23
10010.2.83.24/2910.2.83.25 – 10.2.83.3010.2.83.31
10110.2.83.32/2910.2.83.33 – 10.2.83.3810.2.83.39
10210.2.83.40/2910.2.83.41 – 10.2.83.4610.2.83.47
10310.2.83.48/2910.2.83.49 – 10.2.83.5410.2.83.55
10410.2.83.56/2910.2.83.57 – 10.2.83.6210.2.83.63
10510.2.83.64/2910.2.83.65 – 10.2.83.7010.2.83.71
10610.2.83.72/2910.2.83.73 – 10.2.83.7810.2.83.79
10710.2.83.80/2910.2.83.81 – 10.2.83.8610.2.83.87
10810.2.83.88/2910.2.83.89 – 10.2.83.9410.2.83.95
10910.2.83.96/2910.2.83.97 – 10.2.83.10210.2.83.103
11010.2.83.104/2910.2.83.105 – 10.2.83.11010.2.83.111
11110.2.83.112/2910.2.83.113 – 10.2.83.11810.2.83.119
11210.2.83.120/2910.2.83.121 – 10.2.83.12610.2.83.127
11310.2.83.128/2910.2.83.129 – 10.2.83.13410.2.83.135
11410.2.83.136/2910.2.83.137 – 10.2.83.14210.2.83.143
11510.2.83.144/2910.2.83.145 – 10.2.83.15010.2.83.151
11610.2.83.152/2910.2.83.153 – 10.2.83.15810.2.83.159
11710.2.83.160/2910.2.83.161 – 10.2.83.16610.2.83.167
11810.2.83.168/2910.2.83.169 – 10.2.83.17410.2.83.175
11910.2.83.176/2910.2.83.177 – 10.2.83.18210.2.83.183
12010.2.83.184/2910.2.83.185 – 10.2.83.19010.2.83.191
12110.2.83.192/2910.2.83.193 – 10.2.83.19810.2.83.199
12210.2.83.200/2910.2.83.201 – 10.2.83.20610.2.83.207
12310.2.83.208/2910.2.83.209 – 10.2.83.21410.2.83.215
12410.2.83.216/2910.2.83.217 – 10.2.83.22210.2.83.223
12510.2.83.224/2910.2.83.225 – 10.2.83.23010.2.83.231
12610.2.83.232/2910.2.83.233 – 10.2.83.23810.2.83.239
12710.2.83.240/2910.2.83.241 – 10.2.83.24610.2.83.247
12810.2.83.248/2910.2.83.249 – 10.2.83.25410.2.83.255
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 →