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)10.87.136.0/22
network10.87.136.0/22
broadcast10.87.139.255
first host10.87.136.1
last host10.87.139.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.87.136.0/22
address00001010.01010111.10001000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01010111.10001000.00000000
broadcast00001010.01010111.10001011.11111111
green = network part, grey = host part
hex0x0a578800
decimal173508608
reverse dns0.136.87.10.in-addr.arpa
ipv4-mapped::ffff:a57:8800

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.87.136.0/2910.87.136.1 – 10.87.136.610.87.136.7
210.87.136.8/2910.87.136.9 – 10.87.136.1410.87.136.15
310.87.136.16/2910.87.136.17 – 10.87.136.2210.87.136.23
410.87.136.24/2910.87.136.25 – 10.87.136.3010.87.136.31
510.87.136.32/2910.87.136.33 – 10.87.136.3810.87.136.39
610.87.136.40/2910.87.136.41 – 10.87.136.4610.87.136.47
710.87.136.48/2910.87.136.49 – 10.87.136.5410.87.136.55
810.87.136.56/2910.87.136.57 – 10.87.136.6210.87.136.63
910.87.136.64/2910.87.136.65 – 10.87.136.7010.87.136.71
1010.87.136.72/2910.87.136.73 – 10.87.136.7810.87.136.79
1110.87.136.80/2910.87.136.81 – 10.87.136.8610.87.136.87
1210.87.136.88/2910.87.136.89 – 10.87.136.9410.87.136.95
1310.87.136.96/2910.87.136.97 – 10.87.136.10210.87.136.103
1410.87.136.104/2910.87.136.105 – 10.87.136.11010.87.136.111
1510.87.136.112/2910.87.136.113 – 10.87.136.11810.87.136.119
1610.87.136.120/2910.87.136.121 – 10.87.136.12610.87.136.127
1710.87.136.128/2910.87.136.129 – 10.87.136.13410.87.136.135
1810.87.136.136/2910.87.136.137 – 10.87.136.14210.87.136.143
1910.87.136.144/2910.87.136.145 – 10.87.136.15010.87.136.151
2010.87.136.152/2910.87.136.153 – 10.87.136.15810.87.136.159
2110.87.136.160/2910.87.136.161 – 10.87.136.16610.87.136.167
2210.87.136.168/2910.87.136.169 – 10.87.136.17410.87.136.175
2310.87.136.176/2910.87.136.177 – 10.87.136.18210.87.136.183
2410.87.136.184/2910.87.136.185 – 10.87.136.19010.87.136.191
2510.87.136.192/2910.87.136.193 – 10.87.136.19810.87.136.199
2610.87.136.200/2910.87.136.201 – 10.87.136.20610.87.136.207
2710.87.136.208/2910.87.136.209 – 10.87.136.21410.87.136.215
2810.87.136.216/2910.87.136.217 – 10.87.136.22210.87.136.223
2910.87.136.224/2910.87.136.225 – 10.87.136.23010.87.136.231
3010.87.136.232/2910.87.136.233 – 10.87.136.23810.87.136.239
3110.87.136.240/2910.87.136.241 – 10.87.136.24610.87.136.247
3210.87.136.248/2910.87.136.249 – 10.87.136.25410.87.136.255
3310.87.137.0/2910.87.137.1 – 10.87.137.610.87.137.7
3410.87.137.8/2910.87.137.9 – 10.87.137.1410.87.137.15
3510.87.137.16/2910.87.137.17 – 10.87.137.2210.87.137.23
3610.87.137.24/2910.87.137.25 – 10.87.137.3010.87.137.31
3710.87.137.32/2910.87.137.33 – 10.87.137.3810.87.137.39
3810.87.137.40/2910.87.137.41 – 10.87.137.4610.87.137.47
3910.87.137.48/2910.87.137.49 – 10.87.137.5410.87.137.55
4010.87.137.56/2910.87.137.57 – 10.87.137.6210.87.137.63
4110.87.137.64/2910.87.137.65 – 10.87.137.7010.87.137.71
4210.87.137.72/2910.87.137.73 – 10.87.137.7810.87.137.79
4310.87.137.80/2910.87.137.81 – 10.87.137.8610.87.137.87
4410.87.137.88/2910.87.137.89 – 10.87.137.9410.87.137.95
4510.87.137.96/2910.87.137.97 – 10.87.137.10210.87.137.103
4610.87.137.104/2910.87.137.105 – 10.87.137.11010.87.137.111
4710.87.137.112/2910.87.137.113 – 10.87.137.11810.87.137.119
4810.87.137.120/2910.87.137.121 – 10.87.137.12610.87.137.127
4910.87.137.128/2910.87.137.129 – 10.87.137.13410.87.137.135
5010.87.137.136/2910.87.137.137 – 10.87.137.14210.87.137.143
5110.87.137.144/2910.87.137.145 – 10.87.137.15010.87.137.151
5210.87.137.152/2910.87.137.153 – 10.87.137.15810.87.137.159
5310.87.137.160/2910.87.137.161 – 10.87.137.16610.87.137.167
5410.87.137.168/2910.87.137.169 – 10.87.137.17410.87.137.175
5510.87.137.176/2910.87.137.177 – 10.87.137.18210.87.137.183
5610.87.137.184/2910.87.137.185 – 10.87.137.19010.87.137.191
5710.87.137.192/2910.87.137.193 – 10.87.137.19810.87.137.199
5810.87.137.200/2910.87.137.201 – 10.87.137.20610.87.137.207
5910.87.137.208/2910.87.137.209 – 10.87.137.21410.87.137.215
6010.87.137.216/2910.87.137.217 – 10.87.137.22210.87.137.223
6110.87.137.224/2910.87.137.225 – 10.87.137.23010.87.137.231
6210.87.137.232/2910.87.137.233 – 10.87.137.23810.87.137.239
6310.87.137.240/2910.87.137.241 – 10.87.137.24610.87.137.247
6410.87.137.248/2910.87.137.249 – 10.87.137.25410.87.137.255
6510.87.138.0/2910.87.138.1 – 10.87.138.610.87.138.7
6610.87.138.8/2910.87.138.9 – 10.87.138.1410.87.138.15
6710.87.138.16/2910.87.138.17 – 10.87.138.2210.87.138.23
6810.87.138.24/2910.87.138.25 – 10.87.138.3010.87.138.31
6910.87.138.32/2910.87.138.33 – 10.87.138.3810.87.138.39
7010.87.138.40/2910.87.138.41 – 10.87.138.4610.87.138.47
7110.87.138.48/2910.87.138.49 – 10.87.138.5410.87.138.55
7210.87.138.56/2910.87.138.57 – 10.87.138.6210.87.138.63
7310.87.138.64/2910.87.138.65 – 10.87.138.7010.87.138.71
7410.87.138.72/2910.87.138.73 – 10.87.138.7810.87.138.79
7510.87.138.80/2910.87.138.81 – 10.87.138.8610.87.138.87
7610.87.138.88/2910.87.138.89 – 10.87.138.9410.87.138.95
7710.87.138.96/2910.87.138.97 – 10.87.138.10210.87.138.103
7810.87.138.104/2910.87.138.105 – 10.87.138.11010.87.138.111
7910.87.138.112/2910.87.138.113 – 10.87.138.11810.87.138.119
8010.87.138.120/2910.87.138.121 – 10.87.138.12610.87.138.127
8110.87.138.128/2910.87.138.129 – 10.87.138.13410.87.138.135
8210.87.138.136/2910.87.138.137 – 10.87.138.14210.87.138.143
8310.87.138.144/2910.87.138.145 – 10.87.138.15010.87.138.151
8410.87.138.152/2910.87.138.153 – 10.87.138.15810.87.138.159
8510.87.138.160/2910.87.138.161 – 10.87.138.16610.87.138.167
8610.87.138.168/2910.87.138.169 – 10.87.138.17410.87.138.175
8710.87.138.176/2910.87.138.177 – 10.87.138.18210.87.138.183
8810.87.138.184/2910.87.138.185 – 10.87.138.19010.87.138.191
8910.87.138.192/2910.87.138.193 – 10.87.138.19810.87.138.199
9010.87.138.200/2910.87.138.201 – 10.87.138.20610.87.138.207
9110.87.138.208/2910.87.138.209 – 10.87.138.21410.87.138.215
9210.87.138.216/2910.87.138.217 – 10.87.138.22210.87.138.223
9310.87.138.224/2910.87.138.225 – 10.87.138.23010.87.138.231
9410.87.138.232/2910.87.138.233 – 10.87.138.23810.87.138.239
9510.87.138.240/2910.87.138.241 – 10.87.138.24610.87.138.247
9610.87.138.248/2910.87.138.249 – 10.87.138.25410.87.138.255
9710.87.139.0/2910.87.139.1 – 10.87.139.610.87.139.7
9810.87.139.8/2910.87.139.9 – 10.87.139.1410.87.139.15
9910.87.139.16/2910.87.139.17 – 10.87.139.2210.87.139.23
10010.87.139.24/2910.87.139.25 – 10.87.139.3010.87.139.31
10110.87.139.32/2910.87.139.33 – 10.87.139.3810.87.139.39
10210.87.139.40/2910.87.139.41 – 10.87.139.4610.87.139.47
10310.87.139.48/2910.87.139.49 – 10.87.139.5410.87.139.55
10410.87.139.56/2910.87.139.57 – 10.87.139.6210.87.139.63
10510.87.139.64/2910.87.139.65 – 10.87.139.7010.87.139.71
10610.87.139.72/2910.87.139.73 – 10.87.139.7810.87.139.79
10710.87.139.80/2910.87.139.81 – 10.87.139.8610.87.139.87
10810.87.139.88/2910.87.139.89 – 10.87.139.9410.87.139.95
10910.87.139.96/2910.87.139.97 – 10.87.139.10210.87.139.103
11010.87.139.104/2910.87.139.105 – 10.87.139.11010.87.139.111
11110.87.139.112/2910.87.139.113 – 10.87.139.11810.87.139.119
11210.87.139.120/2910.87.139.121 – 10.87.139.12610.87.139.127
11310.87.139.128/2910.87.139.129 – 10.87.139.13410.87.139.135
11410.87.139.136/2910.87.139.137 – 10.87.139.14210.87.139.143
11510.87.139.144/2910.87.139.145 – 10.87.139.15010.87.139.151
11610.87.139.152/2910.87.139.153 – 10.87.139.15810.87.139.159
11710.87.139.160/2910.87.139.161 – 10.87.139.16610.87.139.167
11810.87.139.168/2910.87.139.169 – 10.87.139.17410.87.139.175
11910.87.139.176/2910.87.139.177 – 10.87.139.18210.87.139.183
12010.87.139.184/2910.87.139.185 – 10.87.139.19010.87.139.191
12110.87.139.192/2910.87.139.193 – 10.87.139.19810.87.139.199
12210.87.139.200/2910.87.139.201 – 10.87.139.20610.87.139.207
12310.87.139.208/2910.87.139.209 – 10.87.139.21410.87.139.215
12410.87.139.216/2910.87.139.217 – 10.87.139.22210.87.139.223
12510.87.139.224/2910.87.139.225 – 10.87.139.23010.87.139.231
12610.87.139.232/2910.87.139.233 – 10.87.139.23810.87.139.239
12710.87.139.240/2910.87.139.241 – 10.87.139.24610.87.139.247
12810.87.139.248/2910.87.139.249 – 10.87.139.25410.87.139.255
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 →