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)10.40.44.0/22
network10.40.44.0/22
broadcast10.40.47.255
first host10.40.44.1
last host10.40.47.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.40.44.0/22
address00001010.00101000.00101100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00101000.00101100.00000000
broadcast00001010.00101000.00101111.11111111
green = network part, grey = host part
hex0x0a282c00
decimal170404864
reverse dns0.44.40.10.in-addr.arpa
ipv4-mapped::ffff:a28:2c00

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.40.44.0/2910.40.44.1 – 10.40.44.610.40.44.7
210.40.44.8/2910.40.44.9 – 10.40.44.1410.40.44.15
310.40.44.16/2910.40.44.17 – 10.40.44.2210.40.44.23
410.40.44.24/2910.40.44.25 – 10.40.44.3010.40.44.31
510.40.44.32/2910.40.44.33 – 10.40.44.3810.40.44.39
610.40.44.40/2910.40.44.41 – 10.40.44.4610.40.44.47
710.40.44.48/2910.40.44.49 – 10.40.44.5410.40.44.55
810.40.44.56/2910.40.44.57 – 10.40.44.6210.40.44.63
910.40.44.64/2910.40.44.65 – 10.40.44.7010.40.44.71
1010.40.44.72/2910.40.44.73 – 10.40.44.7810.40.44.79
1110.40.44.80/2910.40.44.81 – 10.40.44.8610.40.44.87
1210.40.44.88/2910.40.44.89 – 10.40.44.9410.40.44.95
1310.40.44.96/2910.40.44.97 – 10.40.44.10210.40.44.103
1410.40.44.104/2910.40.44.105 – 10.40.44.11010.40.44.111
1510.40.44.112/2910.40.44.113 – 10.40.44.11810.40.44.119
1610.40.44.120/2910.40.44.121 – 10.40.44.12610.40.44.127
1710.40.44.128/2910.40.44.129 – 10.40.44.13410.40.44.135
1810.40.44.136/2910.40.44.137 – 10.40.44.14210.40.44.143
1910.40.44.144/2910.40.44.145 – 10.40.44.15010.40.44.151
2010.40.44.152/2910.40.44.153 – 10.40.44.15810.40.44.159
2110.40.44.160/2910.40.44.161 – 10.40.44.16610.40.44.167
2210.40.44.168/2910.40.44.169 – 10.40.44.17410.40.44.175
2310.40.44.176/2910.40.44.177 – 10.40.44.18210.40.44.183
2410.40.44.184/2910.40.44.185 – 10.40.44.19010.40.44.191
2510.40.44.192/2910.40.44.193 – 10.40.44.19810.40.44.199
2610.40.44.200/2910.40.44.201 – 10.40.44.20610.40.44.207
2710.40.44.208/2910.40.44.209 – 10.40.44.21410.40.44.215
2810.40.44.216/2910.40.44.217 – 10.40.44.22210.40.44.223
2910.40.44.224/2910.40.44.225 – 10.40.44.23010.40.44.231
3010.40.44.232/2910.40.44.233 – 10.40.44.23810.40.44.239
3110.40.44.240/2910.40.44.241 – 10.40.44.24610.40.44.247
3210.40.44.248/2910.40.44.249 – 10.40.44.25410.40.44.255
3310.40.45.0/2910.40.45.1 – 10.40.45.610.40.45.7
3410.40.45.8/2910.40.45.9 – 10.40.45.1410.40.45.15
3510.40.45.16/2910.40.45.17 – 10.40.45.2210.40.45.23
3610.40.45.24/2910.40.45.25 – 10.40.45.3010.40.45.31
3710.40.45.32/2910.40.45.33 – 10.40.45.3810.40.45.39
3810.40.45.40/2910.40.45.41 – 10.40.45.4610.40.45.47
3910.40.45.48/2910.40.45.49 – 10.40.45.5410.40.45.55
4010.40.45.56/2910.40.45.57 – 10.40.45.6210.40.45.63
4110.40.45.64/2910.40.45.65 – 10.40.45.7010.40.45.71
4210.40.45.72/2910.40.45.73 – 10.40.45.7810.40.45.79
4310.40.45.80/2910.40.45.81 – 10.40.45.8610.40.45.87
4410.40.45.88/2910.40.45.89 – 10.40.45.9410.40.45.95
4510.40.45.96/2910.40.45.97 – 10.40.45.10210.40.45.103
4610.40.45.104/2910.40.45.105 – 10.40.45.11010.40.45.111
4710.40.45.112/2910.40.45.113 – 10.40.45.11810.40.45.119
4810.40.45.120/2910.40.45.121 – 10.40.45.12610.40.45.127
4910.40.45.128/2910.40.45.129 – 10.40.45.13410.40.45.135
5010.40.45.136/2910.40.45.137 – 10.40.45.14210.40.45.143
5110.40.45.144/2910.40.45.145 – 10.40.45.15010.40.45.151
5210.40.45.152/2910.40.45.153 – 10.40.45.15810.40.45.159
5310.40.45.160/2910.40.45.161 – 10.40.45.16610.40.45.167
5410.40.45.168/2910.40.45.169 – 10.40.45.17410.40.45.175
5510.40.45.176/2910.40.45.177 – 10.40.45.18210.40.45.183
5610.40.45.184/2910.40.45.185 – 10.40.45.19010.40.45.191
5710.40.45.192/2910.40.45.193 – 10.40.45.19810.40.45.199
5810.40.45.200/2910.40.45.201 – 10.40.45.20610.40.45.207
5910.40.45.208/2910.40.45.209 – 10.40.45.21410.40.45.215
6010.40.45.216/2910.40.45.217 – 10.40.45.22210.40.45.223
6110.40.45.224/2910.40.45.225 – 10.40.45.23010.40.45.231
6210.40.45.232/2910.40.45.233 – 10.40.45.23810.40.45.239
6310.40.45.240/2910.40.45.241 – 10.40.45.24610.40.45.247
6410.40.45.248/2910.40.45.249 – 10.40.45.25410.40.45.255
6510.40.46.0/2910.40.46.1 – 10.40.46.610.40.46.7
6610.40.46.8/2910.40.46.9 – 10.40.46.1410.40.46.15
6710.40.46.16/2910.40.46.17 – 10.40.46.2210.40.46.23
6810.40.46.24/2910.40.46.25 – 10.40.46.3010.40.46.31
6910.40.46.32/2910.40.46.33 – 10.40.46.3810.40.46.39
7010.40.46.40/2910.40.46.41 – 10.40.46.4610.40.46.47
7110.40.46.48/2910.40.46.49 – 10.40.46.5410.40.46.55
7210.40.46.56/2910.40.46.57 – 10.40.46.6210.40.46.63
7310.40.46.64/2910.40.46.65 – 10.40.46.7010.40.46.71
7410.40.46.72/2910.40.46.73 – 10.40.46.7810.40.46.79
7510.40.46.80/2910.40.46.81 – 10.40.46.8610.40.46.87
7610.40.46.88/2910.40.46.89 – 10.40.46.9410.40.46.95
7710.40.46.96/2910.40.46.97 – 10.40.46.10210.40.46.103
7810.40.46.104/2910.40.46.105 – 10.40.46.11010.40.46.111
7910.40.46.112/2910.40.46.113 – 10.40.46.11810.40.46.119
8010.40.46.120/2910.40.46.121 – 10.40.46.12610.40.46.127
8110.40.46.128/2910.40.46.129 – 10.40.46.13410.40.46.135
8210.40.46.136/2910.40.46.137 – 10.40.46.14210.40.46.143
8310.40.46.144/2910.40.46.145 – 10.40.46.15010.40.46.151
8410.40.46.152/2910.40.46.153 – 10.40.46.15810.40.46.159
8510.40.46.160/2910.40.46.161 – 10.40.46.16610.40.46.167
8610.40.46.168/2910.40.46.169 – 10.40.46.17410.40.46.175
8710.40.46.176/2910.40.46.177 – 10.40.46.18210.40.46.183
8810.40.46.184/2910.40.46.185 – 10.40.46.19010.40.46.191
8910.40.46.192/2910.40.46.193 – 10.40.46.19810.40.46.199
9010.40.46.200/2910.40.46.201 – 10.40.46.20610.40.46.207
9110.40.46.208/2910.40.46.209 – 10.40.46.21410.40.46.215
9210.40.46.216/2910.40.46.217 – 10.40.46.22210.40.46.223
9310.40.46.224/2910.40.46.225 – 10.40.46.23010.40.46.231
9410.40.46.232/2910.40.46.233 – 10.40.46.23810.40.46.239
9510.40.46.240/2910.40.46.241 – 10.40.46.24610.40.46.247
9610.40.46.248/2910.40.46.249 – 10.40.46.25410.40.46.255
9710.40.47.0/2910.40.47.1 – 10.40.47.610.40.47.7
9810.40.47.8/2910.40.47.9 – 10.40.47.1410.40.47.15
9910.40.47.16/2910.40.47.17 – 10.40.47.2210.40.47.23
10010.40.47.24/2910.40.47.25 – 10.40.47.3010.40.47.31
10110.40.47.32/2910.40.47.33 – 10.40.47.3810.40.47.39
10210.40.47.40/2910.40.47.41 – 10.40.47.4610.40.47.47
10310.40.47.48/2910.40.47.49 – 10.40.47.5410.40.47.55
10410.40.47.56/2910.40.47.57 – 10.40.47.6210.40.47.63
10510.40.47.64/2910.40.47.65 – 10.40.47.7010.40.47.71
10610.40.47.72/2910.40.47.73 – 10.40.47.7810.40.47.79
10710.40.47.80/2910.40.47.81 – 10.40.47.8610.40.47.87
10810.40.47.88/2910.40.47.89 – 10.40.47.9410.40.47.95
10910.40.47.96/2910.40.47.97 – 10.40.47.10210.40.47.103
11010.40.47.104/2910.40.47.105 – 10.40.47.11010.40.47.111
11110.40.47.112/2910.40.47.113 – 10.40.47.11810.40.47.119
11210.40.47.120/2910.40.47.121 – 10.40.47.12610.40.47.127
11310.40.47.128/2910.40.47.129 – 10.40.47.13410.40.47.135
11410.40.47.136/2910.40.47.137 – 10.40.47.14210.40.47.143
11510.40.47.144/2910.40.47.145 – 10.40.47.15010.40.47.151
11610.40.47.152/2910.40.47.153 – 10.40.47.15810.40.47.159
11710.40.47.160/2910.40.47.161 – 10.40.47.16610.40.47.167
11810.40.47.168/2910.40.47.169 – 10.40.47.17410.40.47.175
11910.40.47.176/2910.40.47.177 – 10.40.47.18210.40.47.183
12010.40.47.184/2910.40.47.185 – 10.40.47.19010.40.47.191
12110.40.47.192/2910.40.47.193 – 10.40.47.19810.40.47.199
12210.40.47.200/2910.40.47.201 – 10.40.47.20610.40.47.207
12310.40.47.208/2910.40.47.209 – 10.40.47.21410.40.47.215
12410.40.47.216/2910.40.47.217 – 10.40.47.22210.40.47.223
12510.40.47.224/2910.40.47.225 – 10.40.47.23010.40.47.231
12610.40.47.232/2910.40.47.233 – 10.40.47.23810.40.47.239
12710.40.47.240/2910.40.47.241 – 10.40.47.24610.40.47.247
12810.40.47.248/2910.40.47.249 – 10.40.47.25410.40.47.255
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 →