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)10.87.48.0/22
network10.87.48.0/22
broadcast10.87.51.255
first host10.87.48.1
last host10.87.51.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.87.48.0/22
address00001010.01010111.00110000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01010111.00110000.00000000
broadcast00001010.01010111.00110011.11111111
green = network part, grey = host part
hex0x0a573000
decimal173486080
reverse dns0.48.87.10.in-addr.arpa
ipv4-mapped::ffff:a57:3000

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.87.48.0/2910.87.48.1 – 10.87.48.610.87.48.7
210.87.48.8/2910.87.48.9 – 10.87.48.1410.87.48.15
310.87.48.16/2910.87.48.17 – 10.87.48.2210.87.48.23
410.87.48.24/2910.87.48.25 – 10.87.48.3010.87.48.31
510.87.48.32/2910.87.48.33 – 10.87.48.3810.87.48.39
610.87.48.40/2910.87.48.41 – 10.87.48.4610.87.48.47
710.87.48.48/2910.87.48.49 – 10.87.48.5410.87.48.55
810.87.48.56/2910.87.48.57 – 10.87.48.6210.87.48.63
910.87.48.64/2910.87.48.65 – 10.87.48.7010.87.48.71
1010.87.48.72/2910.87.48.73 – 10.87.48.7810.87.48.79
1110.87.48.80/2910.87.48.81 – 10.87.48.8610.87.48.87
1210.87.48.88/2910.87.48.89 – 10.87.48.9410.87.48.95
1310.87.48.96/2910.87.48.97 – 10.87.48.10210.87.48.103
1410.87.48.104/2910.87.48.105 – 10.87.48.11010.87.48.111
1510.87.48.112/2910.87.48.113 – 10.87.48.11810.87.48.119
1610.87.48.120/2910.87.48.121 – 10.87.48.12610.87.48.127
1710.87.48.128/2910.87.48.129 – 10.87.48.13410.87.48.135
1810.87.48.136/2910.87.48.137 – 10.87.48.14210.87.48.143
1910.87.48.144/2910.87.48.145 – 10.87.48.15010.87.48.151
2010.87.48.152/2910.87.48.153 – 10.87.48.15810.87.48.159
2110.87.48.160/2910.87.48.161 – 10.87.48.16610.87.48.167
2210.87.48.168/2910.87.48.169 – 10.87.48.17410.87.48.175
2310.87.48.176/2910.87.48.177 – 10.87.48.18210.87.48.183
2410.87.48.184/2910.87.48.185 – 10.87.48.19010.87.48.191
2510.87.48.192/2910.87.48.193 – 10.87.48.19810.87.48.199
2610.87.48.200/2910.87.48.201 – 10.87.48.20610.87.48.207
2710.87.48.208/2910.87.48.209 – 10.87.48.21410.87.48.215
2810.87.48.216/2910.87.48.217 – 10.87.48.22210.87.48.223
2910.87.48.224/2910.87.48.225 – 10.87.48.23010.87.48.231
3010.87.48.232/2910.87.48.233 – 10.87.48.23810.87.48.239
3110.87.48.240/2910.87.48.241 – 10.87.48.24610.87.48.247
3210.87.48.248/2910.87.48.249 – 10.87.48.25410.87.48.255
3310.87.49.0/2910.87.49.1 – 10.87.49.610.87.49.7
3410.87.49.8/2910.87.49.9 – 10.87.49.1410.87.49.15
3510.87.49.16/2910.87.49.17 – 10.87.49.2210.87.49.23
3610.87.49.24/2910.87.49.25 – 10.87.49.3010.87.49.31
3710.87.49.32/2910.87.49.33 – 10.87.49.3810.87.49.39
3810.87.49.40/2910.87.49.41 – 10.87.49.4610.87.49.47
3910.87.49.48/2910.87.49.49 – 10.87.49.5410.87.49.55
4010.87.49.56/2910.87.49.57 – 10.87.49.6210.87.49.63
4110.87.49.64/2910.87.49.65 – 10.87.49.7010.87.49.71
4210.87.49.72/2910.87.49.73 – 10.87.49.7810.87.49.79
4310.87.49.80/2910.87.49.81 – 10.87.49.8610.87.49.87
4410.87.49.88/2910.87.49.89 – 10.87.49.9410.87.49.95
4510.87.49.96/2910.87.49.97 – 10.87.49.10210.87.49.103
4610.87.49.104/2910.87.49.105 – 10.87.49.11010.87.49.111
4710.87.49.112/2910.87.49.113 – 10.87.49.11810.87.49.119
4810.87.49.120/2910.87.49.121 – 10.87.49.12610.87.49.127
4910.87.49.128/2910.87.49.129 – 10.87.49.13410.87.49.135
5010.87.49.136/2910.87.49.137 – 10.87.49.14210.87.49.143
5110.87.49.144/2910.87.49.145 – 10.87.49.15010.87.49.151
5210.87.49.152/2910.87.49.153 – 10.87.49.15810.87.49.159
5310.87.49.160/2910.87.49.161 – 10.87.49.16610.87.49.167
5410.87.49.168/2910.87.49.169 – 10.87.49.17410.87.49.175
5510.87.49.176/2910.87.49.177 – 10.87.49.18210.87.49.183
5610.87.49.184/2910.87.49.185 – 10.87.49.19010.87.49.191
5710.87.49.192/2910.87.49.193 – 10.87.49.19810.87.49.199
5810.87.49.200/2910.87.49.201 – 10.87.49.20610.87.49.207
5910.87.49.208/2910.87.49.209 – 10.87.49.21410.87.49.215
6010.87.49.216/2910.87.49.217 – 10.87.49.22210.87.49.223
6110.87.49.224/2910.87.49.225 – 10.87.49.23010.87.49.231
6210.87.49.232/2910.87.49.233 – 10.87.49.23810.87.49.239
6310.87.49.240/2910.87.49.241 – 10.87.49.24610.87.49.247
6410.87.49.248/2910.87.49.249 – 10.87.49.25410.87.49.255
6510.87.50.0/2910.87.50.1 – 10.87.50.610.87.50.7
6610.87.50.8/2910.87.50.9 – 10.87.50.1410.87.50.15
6710.87.50.16/2910.87.50.17 – 10.87.50.2210.87.50.23
6810.87.50.24/2910.87.50.25 – 10.87.50.3010.87.50.31
6910.87.50.32/2910.87.50.33 – 10.87.50.3810.87.50.39
7010.87.50.40/2910.87.50.41 – 10.87.50.4610.87.50.47
7110.87.50.48/2910.87.50.49 – 10.87.50.5410.87.50.55
7210.87.50.56/2910.87.50.57 – 10.87.50.6210.87.50.63
7310.87.50.64/2910.87.50.65 – 10.87.50.7010.87.50.71
7410.87.50.72/2910.87.50.73 – 10.87.50.7810.87.50.79
7510.87.50.80/2910.87.50.81 – 10.87.50.8610.87.50.87
7610.87.50.88/2910.87.50.89 – 10.87.50.9410.87.50.95
7710.87.50.96/2910.87.50.97 – 10.87.50.10210.87.50.103
7810.87.50.104/2910.87.50.105 – 10.87.50.11010.87.50.111
7910.87.50.112/2910.87.50.113 – 10.87.50.11810.87.50.119
8010.87.50.120/2910.87.50.121 – 10.87.50.12610.87.50.127
8110.87.50.128/2910.87.50.129 – 10.87.50.13410.87.50.135
8210.87.50.136/2910.87.50.137 – 10.87.50.14210.87.50.143
8310.87.50.144/2910.87.50.145 – 10.87.50.15010.87.50.151
8410.87.50.152/2910.87.50.153 – 10.87.50.15810.87.50.159
8510.87.50.160/2910.87.50.161 – 10.87.50.16610.87.50.167
8610.87.50.168/2910.87.50.169 – 10.87.50.17410.87.50.175
8710.87.50.176/2910.87.50.177 – 10.87.50.18210.87.50.183
8810.87.50.184/2910.87.50.185 – 10.87.50.19010.87.50.191
8910.87.50.192/2910.87.50.193 – 10.87.50.19810.87.50.199
9010.87.50.200/2910.87.50.201 – 10.87.50.20610.87.50.207
9110.87.50.208/2910.87.50.209 – 10.87.50.21410.87.50.215
9210.87.50.216/2910.87.50.217 – 10.87.50.22210.87.50.223
9310.87.50.224/2910.87.50.225 – 10.87.50.23010.87.50.231
9410.87.50.232/2910.87.50.233 – 10.87.50.23810.87.50.239
9510.87.50.240/2910.87.50.241 – 10.87.50.24610.87.50.247
9610.87.50.248/2910.87.50.249 – 10.87.50.25410.87.50.255
9710.87.51.0/2910.87.51.1 – 10.87.51.610.87.51.7
9810.87.51.8/2910.87.51.9 – 10.87.51.1410.87.51.15
9910.87.51.16/2910.87.51.17 – 10.87.51.2210.87.51.23
10010.87.51.24/2910.87.51.25 – 10.87.51.3010.87.51.31
10110.87.51.32/2910.87.51.33 – 10.87.51.3810.87.51.39
10210.87.51.40/2910.87.51.41 – 10.87.51.4610.87.51.47
10310.87.51.48/2910.87.51.49 – 10.87.51.5410.87.51.55
10410.87.51.56/2910.87.51.57 – 10.87.51.6210.87.51.63
10510.87.51.64/2910.87.51.65 – 10.87.51.7010.87.51.71
10610.87.51.72/2910.87.51.73 – 10.87.51.7810.87.51.79
10710.87.51.80/2910.87.51.81 – 10.87.51.8610.87.51.87
10810.87.51.88/2910.87.51.89 – 10.87.51.9410.87.51.95
10910.87.51.96/2910.87.51.97 – 10.87.51.10210.87.51.103
11010.87.51.104/2910.87.51.105 – 10.87.51.11010.87.51.111
11110.87.51.112/2910.87.51.113 – 10.87.51.11810.87.51.119
11210.87.51.120/2910.87.51.121 – 10.87.51.12610.87.51.127
11310.87.51.128/2910.87.51.129 – 10.87.51.13410.87.51.135
11410.87.51.136/2910.87.51.137 – 10.87.51.14210.87.51.143
11510.87.51.144/2910.87.51.145 – 10.87.51.15010.87.51.151
11610.87.51.152/2910.87.51.153 – 10.87.51.15810.87.51.159
11710.87.51.160/2910.87.51.161 – 10.87.51.16610.87.51.167
11810.87.51.168/2910.87.51.169 – 10.87.51.17410.87.51.175
11910.87.51.176/2910.87.51.177 – 10.87.51.18210.87.51.183
12010.87.51.184/2910.87.51.185 – 10.87.51.19010.87.51.191
12110.87.51.192/2910.87.51.193 – 10.87.51.19810.87.51.199
12210.87.51.200/2910.87.51.201 – 10.87.51.20610.87.51.207
12310.87.51.208/2910.87.51.209 – 10.87.51.21410.87.51.215
12410.87.51.216/2910.87.51.217 – 10.87.51.22210.87.51.223
12510.87.51.224/2910.87.51.225 – 10.87.51.23010.87.51.231
12610.87.51.232/2910.87.51.233 – 10.87.51.23810.87.51.239
12710.87.51.240/2910.87.51.241 – 10.87.51.24610.87.51.247
12810.87.51.248/2910.87.51.249 – 10.87.51.25410.87.51.255
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 →