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)10.87.0.0/22
network10.87.0.0/22
broadcast10.87.3.255
first host10.87.0.1
last host10.87.3.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.87.0.0/22
address00001010.01010111.00000000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01010111.00000000.00000000
broadcast00001010.01010111.00000011.11111111
green = network part, grey = host part
hex0x0a570000
decimal173473792
reverse dns0.0.87.10.in-addr.arpa
ipv4-mapped::ffff:a57:0

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.87.0.0/2910.87.0.1 – 10.87.0.610.87.0.7
210.87.0.8/2910.87.0.9 – 10.87.0.1410.87.0.15
310.87.0.16/2910.87.0.17 – 10.87.0.2210.87.0.23
410.87.0.24/2910.87.0.25 – 10.87.0.3010.87.0.31
510.87.0.32/2910.87.0.33 – 10.87.0.3810.87.0.39
610.87.0.40/2910.87.0.41 – 10.87.0.4610.87.0.47
710.87.0.48/2910.87.0.49 – 10.87.0.5410.87.0.55
810.87.0.56/2910.87.0.57 – 10.87.0.6210.87.0.63
910.87.0.64/2910.87.0.65 – 10.87.0.7010.87.0.71
1010.87.0.72/2910.87.0.73 – 10.87.0.7810.87.0.79
1110.87.0.80/2910.87.0.81 – 10.87.0.8610.87.0.87
1210.87.0.88/2910.87.0.89 – 10.87.0.9410.87.0.95
1310.87.0.96/2910.87.0.97 – 10.87.0.10210.87.0.103
1410.87.0.104/2910.87.0.105 – 10.87.0.11010.87.0.111
1510.87.0.112/2910.87.0.113 – 10.87.0.11810.87.0.119
1610.87.0.120/2910.87.0.121 – 10.87.0.12610.87.0.127
1710.87.0.128/2910.87.0.129 – 10.87.0.13410.87.0.135
1810.87.0.136/2910.87.0.137 – 10.87.0.14210.87.0.143
1910.87.0.144/2910.87.0.145 – 10.87.0.15010.87.0.151
2010.87.0.152/2910.87.0.153 – 10.87.0.15810.87.0.159
2110.87.0.160/2910.87.0.161 – 10.87.0.16610.87.0.167
2210.87.0.168/2910.87.0.169 – 10.87.0.17410.87.0.175
2310.87.0.176/2910.87.0.177 – 10.87.0.18210.87.0.183
2410.87.0.184/2910.87.0.185 – 10.87.0.19010.87.0.191
2510.87.0.192/2910.87.0.193 – 10.87.0.19810.87.0.199
2610.87.0.200/2910.87.0.201 – 10.87.0.20610.87.0.207
2710.87.0.208/2910.87.0.209 – 10.87.0.21410.87.0.215
2810.87.0.216/2910.87.0.217 – 10.87.0.22210.87.0.223
2910.87.0.224/2910.87.0.225 – 10.87.0.23010.87.0.231
3010.87.0.232/2910.87.0.233 – 10.87.0.23810.87.0.239
3110.87.0.240/2910.87.0.241 – 10.87.0.24610.87.0.247
3210.87.0.248/2910.87.0.249 – 10.87.0.25410.87.0.255
3310.87.1.0/2910.87.1.1 – 10.87.1.610.87.1.7
3410.87.1.8/2910.87.1.9 – 10.87.1.1410.87.1.15
3510.87.1.16/2910.87.1.17 – 10.87.1.2210.87.1.23
3610.87.1.24/2910.87.1.25 – 10.87.1.3010.87.1.31
3710.87.1.32/2910.87.1.33 – 10.87.1.3810.87.1.39
3810.87.1.40/2910.87.1.41 – 10.87.1.4610.87.1.47
3910.87.1.48/2910.87.1.49 – 10.87.1.5410.87.1.55
4010.87.1.56/2910.87.1.57 – 10.87.1.6210.87.1.63
4110.87.1.64/2910.87.1.65 – 10.87.1.7010.87.1.71
4210.87.1.72/2910.87.1.73 – 10.87.1.7810.87.1.79
4310.87.1.80/2910.87.1.81 – 10.87.1.8610.87.1.87
4410.87.1.88/2910.87.1.89 – 10.87.1.9410.87.1.95
4510.87.1.96/2910.87.1.97 – 10.87.1.10210.87.1.103
4610.87.1.104/2910.87.1.105 – 10.87.1.11010.87.1.111
4710.87.1.112/2910.87.1.113 – 10.87.1.11810.87.1.119
4810.87.1.120/2910.87.1.121 – 10.87.1.12610.87.1.127
4910.87.1.128/2910.87.1.129 – 10.87.1.13410.87.1.135
5010.87.1.136/2910.87.1.137 – 10.87.1.14210.87.1.143
5110.87.1.144/2910.87.1.145 – 10.87.1.15010.87.1.151
5210.87.1.152/2910.87.1.153 – 10.87.1.15810.87.1.159
5310.87.1.160/2910.87.1.161 – 10.87.1.16610.87.1.167
5410.87.1.168/2910.87.1.169 – 10.87.1.17410.87.1.175
5510.87.1.176/2910.87.1.177 – 10.87.1.18210.87.1.183
5610.87.1.184/2910.87.1.185 – 10.87.1.19010.87.1.191
5710.87.1.192/2910.87.1.193 – 10.87.1.19810.87.1.199
5810.87.1.200/2910.87.1.201 – 10.87.1.20610.87.1.207
5910.87.1.208/2910.87.1.209 – 10.87.1.21410.87.1.215
6010.87.1.216/2910.87.1.217 – 10.87.1.22210.87.1.223
6110.87.1.224/2910.87.1.225 – 10.87.1.23010.87.1.231
6210.87.1.232/2910.87.1.233 – 10.87.1.23810.87.1.239
6310.87.1.240/2910.87.1.241 – 10.87.1.24610.87.1.247
6410.87.1.248/2910.87.1.249 – 10.87.1.25410.87.1.255
6510.87.2.0/2910.87.2.1 – 10.87.2.610.87.2.7
6610.87.2.8/2910.87.2.9 – 10.87.2.1410.87.2.15
6710.87.2.16/2910.87.2.17 – 10.87.2.2210.87.2.23
6810.87.2.24/2910.87.2.25 – 10.87.2.3010.87.2.31
6910.87.2.32/2910.87.2.33 – 10.87.2.3810.87.2.39
7010.87.2.40/2910.87.2.41 – 10.87.2.4610.87.2.47
7110.87.2.48/2910.87.2.49 – 10.87.2.5410.87.2.55
7210.87.2.56/2910.87.2.57 – 10.87.2.6210.87.2.63
7310.87.2.64/2910.87.2.65 – 10.87.2.7010.87.2.71
7410.87.2.72/2910.87.2.73 – 10.87.2.7810.87.2.79
7510.87.2.80/2910.87.2.81 – 10.87.2.8610.87.2.87
7610.87.2.88/2910.87.2.89 – 10.87.2.9410.87.2.95
7710.87.2.96/2910.87.2.97 – 10.87.2.10210.87.2.103
7810.87.2.104/2910.87.2.105 – 10.87.2.11010.87.2.111
7910.87.2.112/2910.87.2.113 – 10.87.2.11810.87.2.119
8010.87.2.120/2910.87.2.121 – 10.87.2.12610.87.2.127
8110.87.2.128/2910.87.2.129 – 10.87.2.13410.87.2.135
8210.87.2.136/2910.87.2.137 – 10.87.2.14210.87.2.143
8310.87.2.144/2910.87.2.145 – 10.87.2.15010.87.2.151
8410.87.2.152/2910.87.2.153 – 10.87.2.15810.87.2.159
8510.87.2.160/2910.87.2.161 – 10.87.2.16610.87.2.167
8610.87.2.168/2910.87.2.169 – 10.87.2.17410.87.2.175
8710.87.2.176/2910.87.2.177 – 10.87.2.18210.87.2.183
8810.87.2.184/2910.87.2.185 – 10.87.2.19010.87.2.191
8910.87.2.192/2910.87.2.193 – 10.87.2.19810.87.2.199
9010.87.2.200/2910.87.2.201 – 10.87.2.20610.87.2.207
9110.87.2.208/2910.87.2.209 – 10.87.2.21410.87.2.215
9210.87.2.216/2910.87.2.217 – 10.87.2.22210.87.2.223
9310.87.2.224/2910.87.2.225 – 10.87.2.23010.87.2.231
9410.87.2.232/2910.87.2.233 – 10.87.2.23810.87.2.239
9510.87.2.240/2910.87.2.241 – 10.87.2.24610.87.2.247
9610.87.2.248/2910.87.2.249 – 10.87.2.25410.87.2.255
9710.87.3.0/2910.87.3.1 – 10.87.3.610.87.3.7
9810.87.3.8/2910.87.3.9 – 10.87.3.1410.87.3.15
9910.87.3.16/2910.87.3.17 – 10.87.3.2210.87.3.23
10010.87.3.24/2910.87.3.25 – 10.87.3.3010.87.3.31
10110.87.3.32/2910.87.3.33 – 10.87.3.3810.87.3.39
10210.87.3.40/2910.87.3.41 – 10.87.3.4610.87.3.47
10310.87.3.48/2910.87.3.49 – 10.87.3.5410.87.3.55
10410.87.3.56/2910.87.3.57 – 10.87.3.6210.87.3.63
10510.87.3.64/2910.87.3.65 – 10.87.3.7010.87.3.71
10610.87.3.72/2910.87.3.73 – 10.87.3.7810.87.3.79
10710.87.3.80/2910.87.3.81 – 10.87.3.8610.87.3.87
10810.87.3.88/2910.87.3.89 – 10.87.3.9410.87.3.95
10910.87.3.96/2910.87.3.97 – 10.87.3.10210.87.3.103
11010.87.3.104/2910.87.3.105 – 10.87.3.11010.87.3.111
11110.87.3.112/2910.87.3.113 – 10.87.3.11810.87.3.119
11210.87.3.120/2910.87.3.121 – 10.87.3.12610.87.3.127
11310.87.3.128/2910.87.3.129 – 10.87.3.13410.87.3.135
11410.87.3.136/2910.87.3.137 – 10.87.3.14210.87.3.143
11510.87.3.144/2910.87.3.145 – 10.87.3.15010.87.3.151
11610.87.3.152/2910.87.3.153 – 10.87.3.15810.87.3.159
11710.87.3.160/2910.87.3.161 – 10.87.3.16610.87.3.167
11810.87.3.168/2910.87.3.169 – 10.87.3.17410.87.3.175
11910.87.3.176/2910.87.3.177 – 10.87.3.18210.87.3.183
12010.87.3.184/2910.87.3.185 – 10.87.3.19010.87.3.191
12110.87.3.192/2910.87.3.193 – 10.87.3.19810.87.3.199
12210.87.3.200/2910.87.3.201 – 10.87.3.20610.87.3.207
12310.87.3.208/2910.87.3.209 – 10.87.3.21410.87.3.215
12410.87.3.216/2910.87.3.217 – 10.87.3.22210.87.3.223
12510.87.3.224/2910.87.3.225 – 10.87.3.23010.87.3.231
12610.87.3.232/2910.87.3.233 – 10.87.3.23810.87.3.239
12710.87.3.240/2910.87.3.241 – 10.87.3.24610.87.3.247
12810.87.3.248/2910.87.3.249 – 10.87.3.25410.87.3.255
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 →