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)10.89.40.0/22
network10.89.40.0/22
broadcast10.89.43.255
first host10.89.40.1
last host10.89.43.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.89.40.0/22
address00001010.01011001.00101000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01011001.00101000.00000000
broadcast00001010.01011001.00101011.11111111
green = network part, grey = host part
hex0x0a592800
decimal173615104
reverse dns0.40.89.10.in-addr.arpa
ipv4-mapped::ffff:a59:2800

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.89.40.0/2910.89.40.1 – 10.89.40.610.89.40.7
210.89.40.8/2910.89.40.9 – 10.89.40.1410.89.40.15
310.89.40.16/2910.89.40.17 – 10.89.40.2210.89.40.23
410.89.40.24/2910.89.40.25 – 10.89.40.3010.89.40.31
510.89.40.32/2910.89.40.33 – 10.89.40.3810.89.40.39
610.89.40.40/2910.89.40.41 – 10.89.40.4610.89.40.47
710.89.40.48/2910.89.40.49 – 10.89.40.5410.89.40.55
810.89.40.56/2910.89.40.57 – 10.89.40.6210.89.40.63
910.89.40.64/2910.89.40.65 – 10.89.40.7010.89.40.71
1010.89.40.72/2910.89.40.73 – 10.89.40.7810.89.40.79
1110.89.40.80/2910.89.40.81 – 10.89.40.8610.89.40.87
1210.89.40.88/2910.89.40.89 – 10.89.40.9410.89.40.95
1310.89.40.96/2910.89.40.97 – 10.89.40.10210.89.40.103
1410.89.40.104/2910.89.40.105 – 10.89.40.11010.89.40.111
1510.89.40.112/2910.89.40.113 – 10.89.40.11810.89.40.119
1610.89.40.120/2910.89.40.121 – 10.89.40.12610.89.40.127
1710.89.40.128/2910.89.40.129 – 10.89.40.13410.89.40.135
1810.89.40.136/2910.89.40.137 – 10.89.40.14210.89.40.143
1910.89.40.144/2910.89.40.145 – 10.89.40.15010.89.40.151
2010.89.40.152/2910.89.40.153 – 10.89.40.15810.89.40.159
2110.89.40.160/2910.89.40.161 – 10.89.40.16610.89.40.167
2210.89.40.168/2910.89.40.169 – 10.89.40.17410.89.40.175
2310.89.40.176/2910.89.40.177 – 10.89.40.18210.89.40.183
2410.89.40.184/2910.89.40.185 – 10.89.40.19010.89.40.191
2510.89.40.192/2910.89.40.193 – 10.89.40.19810.89.40.199
2610.89.40.200/2910.89.40.201 – 10.89.40.20610.89.40.207
2710.89.40.208/2910.89.40.209 – 10.89.40.21410.89.40.215
2810.89.40.216/2910.89.40.217 – 10.89.40.22210.89.40.223
2910.89.40.224/2910.89.40.225 – 10.89.40.23010.89.40.231
3010.89.40.232/2910.89.40.233 – 10.89.40.23810.89.40.239
3110.89.40.240/2910.89.40.241 – 10.89.40.24610.89.40.247
3210.89.40.248/2910.89.40.249 – 10.89.40.25410.89.40.255
3310.89.41.0/2910.89.41.1 – 10.89.41.610.89.41.7
3410.89.41.8/2910.89.41.9 – 10.89.41.1410.89.41.15
3510.89.41.16/2910.89.41.17 – 10.89.41.2210.89.41.23
3610.89.41.24/2910.89.41.25 – 10.89.41.3010.89.41.31
3710.89.41.32/2910.89.41.33 – 10.89.41.3810.89.41.39
3810.89.41.40/2910.89.41.41 – 10.89.41.4610.89.41.47
3910.89.41.48/2910.89.41.49 – 10.89.41.5410.89.41.55
4010.89.41.56/2910.89.41.57 – 10.89.41.6210.89.41.63
4110.89.41.64/2910.89.41.65 – 10.89.41.7010.89.41.71
4210.89.41.72/2910.89.41.73 – 10.89.41.7810.89.41.79
4310.89.41.80/2910.89.41.81 – 10.89.41.8610.89.41.87
4410.89.41.88/2910.89.41.89 – 10.89.41.9410.89.41.95
4510.89.41.96/2910.89.41.97 – 10.89.41.10210.89.41.103
4610.89.41.104/2910.89.41.105 – 10.89.41.11010.89.41.111
4710.89.41.112/2910.89.41.113 – 10.89.41.11810.89.41.119
4810.89.41.120/2910.89.41.121 – 10.89.41.12610.89.41.127
4910.89.41.128/2910.89.41.129 – 10.89.41.13410.89.41.135
5010.89.41.136/2910.89.41.137 – 10.89.41.14210.89.41.143
5110.89.41.144/2910.89.41.145 – 10.89.41.15010.89.41.151
5210.89.41.152/2910.89.41.153 – 10.89.41.15810.89.41.159
5310.89.41.160/2910.89.41.161 – 10.89.41.16610.89.41.167
5410.89.41.168/2910.89.41.169 – 10.89.41.17410.89.41.175
5510.89.41.176/2910.89.41.177 – 10.89.41.18210.89.41.183
5610.89.41.184/2910.89.41.185 – 10.89.41.19010.89.41.191
5710.89.41.192/2910.89.41.193 – 10.89.41.19810.89.41.199
5810.89.41.200/2910.89.41.201 – 10.89.41.20610.89.41.207
5910.89.41.208/2910.89.41.209 – 10.89.41.21410.89.41.215
6010.89.41.216/2910.89.41.217 – 10.89.41.22210.89.41.223
6110.89.41.224/2910.89.41.225 – 10.89.41.23010.89.41.231
6210.89.41.232/2910.89.41.233 – 10.89.41.23810.89.41.239
6310.89.41.240/2910.89.41.241 – 10.89.41.24610.89.41.247
6410.89.41.248/2910.89.41.249 – 10.89.41.25410.89.41.255
6510.89.42.0/2910.89.42.1 – 10.89.42.610.89.42.7
6610.89.42.8/2910.89.42.9 – 10.89.42.1410.89.42.15
6710.89.42.16/2910.89.42.17 – 10.89.42.2210.89.42.23
6810.89.42.24/2910.89.42.25 – 10.89.42.3010.89.42.31
6910.89.42.32/2910.89.42.33 – 10.89.42.3810.89.42.39
7010.89.42.40/2910.89.42.41 – 10.89.42.4610.89.42.47
7110.89.42.48/2910.89.42.49 – 10.89.42.5410.89.42.55
7210.89.42.56/2910.89.42.57 – 10.89.42.6210.89.42.63
7310.89.42.64/2910.89.42.65 – 10.89.42.7010.89.42.71
7410.89.42.72/2910.89.42.73 – 10.89.42.7810.89.42.79
7510.89.42.80/2910.89.42.81 – 10.89.42.8610.89.42.87
7610.89.42.88/2910.89.42.89 – 10.89.42.9410.89.42.95
7710.89.42.96/2910.89.42.97 – 10.89.42.10210.89.42.103
7810.89.42.104/2910.89.42.105 – 10.89.42.11010.89.42.111
7910.89.42.112/2910.89.42.113 – 10.89.42.11810.89.42.119
8010.89.42.120/2910.89.42.121 – 10.89.42.12610.89.42.127
8110.89.42.128/2910.89.42.129 – 10.89.42.13410.89.42.135
8210.89.42.136/2910.89.42.137 – 10.89.42.14210.89.42.143
8310.89.42.144/2910.89.42.145 – 10.89.42.15010.89.42.151
8410.89.42.152/2910.89.42.153 – 10.89.42.15810.89.42.159
8510.89.42.160/2910.89.42.161 – 10.89.42.16610.89.42.167
8610.89.42.168/2910.89.42.169 – 10.89.42.17410.89.42.175
8710.89.42.176/2910.89.42.177 – 10.89.42.18210.89.42.183
8810.89.42.184/2910.89.42.185 – 10.89.42.19010.89.42.191
8910.89.42.192/2910.89.42.193 – 10.89.42.19810.89.42.199
9010.89.42.200/2910.89.42.201 – 10.89.42.20610.89.42.207
9110.89.42.208/2910.89.42.209 – 10.89.42.21410.89.42.215
9210.89.42.216/2910.89.42.217 – 10.89.42.22210.89.42.223
9310.89.42.224/2910.89.42.225 – 10.89.42.23010.89.42.231
9410.89.42.232/2910.89.42.233 – 10.89.42.23810.89.42.239
9510.89.42.240/2910.89.42.241 – 10.89.42.24610.89.42.247
9610.89.42.248/2910.89.42.249 – 10.89.42.25410.89.42.255
9710.89.43.0/2910.89.43.1 – 10.89.43.610.89.43.7
9810.89.43.8/2910.89.43.9 – 10.89.43.1410.89.43.15
9910.89.43.16/2910.89.43.17 – 10.89.43.2210.89.43.23
10010.89.43.24/2910.89.43.25 – 10.89.43.3010.89.43.31
10110.89.43.32/2910.89.43.33 – 10.89.43.3810.89.43.39
10210.89.43.40/2910.89.43.41 – 10.89.43.4610.89.43.47
10310.89.43.48/2910.89.43.49 – 10.89.43.5410.89.43.55
10410.89.43.56/2910.89.43.57 – 10.89.43.6210.89.43.63
10510.89.43.64/2910.89.43.65 – 10.89.43.7010.89.43.71
10610.89.43.72/2910.89.43.73 – 10.89.43.7810.89.43.79
10710.89.43.80/2910.89.43.81 – 10.89.43.8610.89.43.87
10810.89.43.88/2910.89.43.89 – 10.89.43.9410.89.43.95
10910.89.43.96/2910.89.43.97 – 10.89.43.10210.89.43.103
11010.89.43.104/2910.89.43.105 – 10.89.43.11010.89.43.111
11110.89.43.112/2910.89.43.113 – 10.89.43.11810.89.43.119
11210.89.43.120/2910.89.43.121 – 10.89.43.12610.89.43.127
11310.89.43.128/2910.89.43.129 – 10.89.43.13410.89.43.135
11410.89.43.136/2910.89.43.137 – 10.89.43.14210.89.43.143
11510.89.43.144/2910.89.43.145 – 10.89.43.15010.89.43.151
11610.89.43.152/2910.89.43.153 – 10.89.43.15810.89.43.159
11710.89.43.160/2910.89.43.161 – 10.89.43.16610.89.43.167
11810.89.43.168/2910.89.43.169 – 10.89.43.17410.89.43.175
11910.89.43.176/2910.89.43.177 – 10.89.43.18210.89.43.183
12010.89.43.184/2910.89.43.185 – 10.89.43.19010.89.43.191
12110.89.43.192/2910.89.43.193 – 10.89.43.19810.89.43.199
12210.89.43.200/2910.89.43.201 – 10.89.43.20610.89.43.207
12310.89.43.208/2910.89.43.209 – 10.89.43.21410.89.43.215
12410.89.43.216/2910.89.43.217 – 10.89.43.22210.89.43.223
12510.89.43.224/2910.89.43.225 – 10.89.43.23010.89.43.231
12610.89.43.232/2910.89.43.233 – 10.89.43.23810.89.43.239
12710.89.43.240/2910.89.43.241 – 10.89.43.24610.89.43.247
12810.89.43.248/2910.89.43.249 – 10.89.43.25410.89.43.255
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 →