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)10.87.32.0/22
network10.87.32.0/22
broadcast10.87.35.255
first host10.87.32.1
last host10.87.35.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.87.32.0/22
address00001010.01010111.00100000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01010111.00100000.00000000
broadcast00001010.01010111.00100011.11111111
green = network part, grey = host part
hex0x0a572000
decimal173481984
reverse dns0.32.87.10.in-addr.arpa
ipv4-mapped::ffff:a57:2000

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.87.32.0/2910.87.32.1 – 10.87.32.610.87.32.7
210.87.32.8/2910.87.32.9 – 10.87.32.1410.87.32.15
310.87.32.16/2910.87.32.17 – 10.87.32.2210.87.32.23
410.87.32.24/2910.87.32.25 – 10.87.32.3010.87.32.31
510.87.32.32/2910.87.32.33 – 10.87.32.3810.87.32.39
610.87.32.40/2910.87.32.41 – 10.87.32.4610.87.32.47
710.87.32.48/2910.87.32.49 – 10.87.32.5410.87.32.55
810.87.32.56/2910.87.32.57 – 10.87.32.6210.87.32.63
910.87.32.64/2910.87.32.65 – 10.87.32.7010.87.32.71
1010.87.32.72/2910.87.32.73 – 10.87.32.7810.87.32.79
1110.87.32.80/2910.87.32.81 – 10.87.32.8610.87.32.87
1210.87.32.88/2910.87.32.89 – 10.87.32.9410.87.32.95
1310.87.32.96/2910.87.32.97 – 10.87.32.10210.87.32.103
1410.87.32.104/2910.87.32.105 – 10.87.32.11010.87.32.111
1510.87.32.112/2910.87.32.113 – 10.87.32.11810.87.32.119
1610.87.32.120/2910.87.32.121 – 10.87.32.12610.87.32.127
1710.87.32.128/2910.87.32.129 – 10.87.32.13410.87.32.135
1810.87.32.136/2910.87.32.137 – 10.87.32.14210.87.32.143
1910.87.32.144/2910.87.32.145 – 10.87.32.15010.87.32.151
2010.87.32.152/2910.87.32.153 – 10.87.32.15810.87.32.159
2110.87.32.160/2910.87.32.161 – 10.87.32.16610.87.32.167
2210.87.32.168/2910.87.32.169 – 10.87.32.17410.87.32.175
2310.87.32.176/2910.87.32.177 – 10.87.32.18210.87.32.183
2410.87.32.184/2910.87.32.185 – 10.87.32.19010.87.32.191
2510.87.32.192/2910.87.32.193 – 10.87.32.19810.87.32.199
2610.87.32.200/2910.87.32.201 – 10.87.32.20610.87.32.207
2710.87.32.208/2910.87.32.209 – 10.87.32.21410.87.32.215
2810.87.32.216/2910.87.32.217 – 10.87.32.22210.87.32.223
2910.87.32.224/2910.87.32.225 – 10.87.32.23010.87.32.231
3010.87.32.232/2910.87.32.233 – 10.87.32.23810.87.32.239
3110.87.32.240/2910.87.32.241 – 10.87.32.24610.87.32.247
3210.87.32.248/2910.87.32.249 – 10.87.32.25410.87.32.255
3310.87.33.0/2910.87.33.1 – 10.87.33.610.87.33.7
3410.87.33.8/2910.87.33.9 – 10.87.33.1410.87.33.15
3510.87.33.16/2910.87.33.17 – 10.87.33.2210.87.33.23
3610.87.33.24/2910.87.33.25 – 10.87.33.3010.87.33.31
3710.87.33.32/2910.87.33.33 – 10.87.33.3810.87.33.39
3810.87.33.40/2910.87.33.41 – 10.87.33.4610.87.33.47
3910.87.33.48/2910.87.33.49 – 10.87.33.5410.87.33.55
4010.87.33.56/2910.87.33.57 – 10.87.33.6210.87.33.63
4110.87.33.64/2910.87.33.65 – 10.87.33.7010.87.33.71
4210.87.33.72/2910.87.33.73 – 10.87.33.7810.87.33.79
4310.87.33.80/2910.87.33.81 – 10.87.33.8610.87.33.87
4410.87.33.88/2910.87.33.89 – 10.87.33.9410.87.33.95
4510.87.33.96/2910.87.33.97 – 10.87.33.10210.87.33.103
4610.87.33.104/2910.87.33.105 – 10.87.33.11010.87.33.111
4710.87.33.112/2910.87.33.113 – 10.87.33.11810.87.33.119
4810.87.33.120/2910.87.33.121 – 10.87.33.12610.87.33.127
4910.87.33.128/2910.87.33.129 – 10.87.33.13410.87.33.135
5010.87.33.136/2910.87.33.137 – 10.87.33.14210.87.33.143
5110.87.33.144/2910.87.33.145 – 10.87.33.15010.87.33.151
5210.87.33.152/2910.87.33.153 – 10.87.33.15810.87.33.159
5310.87.33.160/2910.87.33.161 – 10.87.33.16610.87.33.167
5410.87.33.168/2910.87.33.169 – 10.87.33.17410.87.33.175
5510.87.33.176/2910.87.33.177 – 10.87.33.18210.87.33.183
5610.87.33.184/2910.87.33.185 – 10.87.33.19010.87.33.191
5710.87.33.192/2910.87.33.193 – 10.87.33.19810.87.33.199
5810.87.33.200/2910.87.33.201 – 10.87.33.20610.87.33.207
5910.87.33.208/2910.87.33.209 – 10.87.33.21410.87.33.215
6010.87.33.216/2910.87.33.217 – 10.87.33.22210.87.33.223
6110.87.33.224/2910.87.33.225 – 10.87.33.23010.87.33.231
6210.87.33.232/2910.87.33.233 – 10.87.33.23810.87.33.239
6310.87.33.240/2910.87.33.241 – 10.87.33.24610.87.33.247
6410.87.33.248/2910.87.33.249 – 10.87.33.25410.87.33.255
6510.87.34.0/2910.87.34.1 – 10.87.34.610.87.34.7
6610.87.34.8/2910.87.34.9 – 10.87.34.1410.87.34.15
6710.87.34.16/2910.87.34.17 – 10.87.34.2210.87.34.23
6810.87.34.24/2910.87.34.25 – 10.87.34.3010.87.34.31
6910.87.34.32/2910.87.34.33 – 10.87.34.3810.87.34.39
7010.87.34.40/2910.87.34.41 – 10.87.34.4610.87.34.47
7110.87.34.48/2910.87.34.49 – 10.87.34.5410.87.34.55
7210.87.34.56/2910.87.34.57 – 10.87.34.6210.87.34.63
7310.87.34.64/2910.87.34.65 – 10.87.34.7010.87.34.71
7410.87.34.72/2910.87.34.73 – 10.87.34.7810.87.34.79
7510.87.34.80/2910.87.34.81 – 10.87.34.8610.87.34.87
7610.87.34.88/2910.87.34.89 – 10.87.34.9410.87.34.95
7710.87.34.96/2910.87.34.97 – 10.87.34.10210.87.34.103
7810.87.34.104/2910.87.34.105 – 10.87.34.11010.87.34.111
7910.87.34.112/2910.87.34.113 – 10.87.34.11810.87.34.119
8010.87.34.120/2910.87.34.121 – 10.87.34.12610.87.34.127
8110.87.34.128/2910.87.34.129 – 10.87.34.13410.87.34.135
8210.87.34.136/2910.87.34.137 – 10.87.34.14210.87.34.143
8310.87.34.144/2910.87.34.145 – 10.87.34.15010.87.34.151
8410.87.34.152/2910.87.34.153 – 10.87.34.15810.87.34.159
8510.87.34.160/2910.87.34.161 – 10.87.34.16610.87.34.167
8610.87.34.168/2910.87.34.169 – 10.87.34.17410.87.34.175
8710.87.34.176/2910.87.34.177 – 10.87.34.18210.87.34.183
8810.87.34.184/2910.87.34.185 – 10.87.34.19010.87.34.191
8910.87.34.192/2910.87.34.193 – 10.87.34.19810.87.34.199
9010.87.34.200/2910.87.34.201 – 10.87.34.20610.87.34.207
9110.87.34.208/2910.87.34.209 – 10.87.34.21410.87.34.215
9210.87.34.216/2910.87.34.217 – 10.87.34.22210.87.34.223
9310.87.34.224/2910.87.34.225 – 10.87.34.23010.87.34.231
9410.87.34.232/2910.87.34.233 – 10.87.34.23810.87.34.239
9510.87.34.240/2910.87.34.241 – 10.87.34.24610.87.34.247
9610.87.34.248/2910.87.34.249 – 10.87.34.25410.87.34.255
9710.87.35.0/2910.87.35.1 – 10.87.35.610.87.35.7
9810.87.35.8/2910.87.35.9 – 10.87.35.1410.87.35.15
9910.87.35.16/2910.87.35.17 – 10.87.35.2210.87.35.23
10010.87.35.24/2910.87.35.25 – 10.87.35.3010.87.35.31
10110.87.35.32/2910.87.35.33 – 10.87.35.3810.87.35.39
10210.87.35.40/2910.87.35.41 – 10.87.35.4610.87.35.47
10310.87.35.48/2910.87.35.49 – 10.87.35.5410.87.35.55
10410.87.35.56/2910.87.35.57 – 10.87.35.6210.87.35.63
10510.87.35.64/2910.87.35.65 – 10.87.35.7010.87.35.71
10610.87.35.72/2910.87.35.73 – 10.87.35.7810.87.35.79
10710.87.35.80/2910.87.35.81 – 10.87.35.8610.87.35.87
10810.87.35.88/2910.87.35.89 – 10.87.35.9410.87.35.95
10910.87.35.96/2910.87.35.97 – 10.87.35.10210.87.35.103
11010.87.35.104/2910.87.35.105 – 10.87.35.11010.87.35.111
11110.87.35.112/2910.87.35.113 – 10.87.35.11810.87.35.119
11210.87.35.120/2910.87.35.121 – 10.87.35.12610.87.35.127
11310.87.35.128/2910.87.35.129 – 10.87.35.13410.87.35.135
11410.87.35.136/2910.87.35.137 – 10.87.35.14210.87.35.143
11510.87.35.144/2910.87.35.145 – 10.87.35.15010.87.35.151
11610.87.35.152/2910.87.35.153 – 10.87.35.15810.87.35.159
11710.87.35.160/2910.87.35.161 – 10.87.35.16610.87.35.167
11810.87.35.168/2910.87.35.169 – 10.87.35.17410.87.35.175
11910.87.35.176/2910.87.35.177 – 10.87.35.18210.87.35.183
12010.87.35.184/2910.87.35.185 – 10.87.35.19010.87.35.191
12110.87.35.192/2910.87.35.193 – 10.87.35.19810.87.35.199
12210.87.35.200/2910.87.35.201 – 10.87.35.20610.87.35.207
12310.87.35.208/2910.87.35.209 – 10.87.35.21410.87.35.215
12410.87.35.216/2910.87.35.217 – 10.87.35.22210.87.35.223
12510.87.35.224/2910.87.35.225 – 10.87.35.23010.87.35.231
12610.87.35.232/2910.87.35.233 – 10.87.35.23810.87.35.239
12710.87.35.240/2910.87.35.241 – 10.87.35.24610.87.35.247
12810.87.35.248/2910.87.35.249 – 10.87.35.25410.87.35.255
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 →