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)10.71.56.0/22
network10.71.56.0/22
broadcast10.71.59.255
first host10.71.56.1
last host10.71.59.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.71.56.0/22
address00001010.01000111.00111000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01000111.00111000.00000000
broadcast00001010.01000111.00111011.11111111
green = network part, grey = host part
hex0x0a473800
decimal172439552
reverse dns0.56.71.10.in-addr.arpa
ipv4-mapped::ffff:a47:3800

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.71.56.0/2910.71.56.1 – 10.71.56.610.71.56.7
210.71.56.8/2910.71.56.9 – 10.71.56.1410.71.56.15
310.71.56.16/2910.71.56.17 – 10.71.56.2210.71.56.23
410.71.56.24/2910.71.56.25 – 10.71.56.3010.71.56.31
510.71.56.32/2910.71.56.33 – 10.71.56.3810.71.56.39
610.71.56.40/2910.71.56.41 – 10.71.56.4610.71.56.47
710.71.56.48/2910.71.56.49 – 10.71.56.5410.71.56.55
810.71.56.56/2910.71.56.57 – 10.71.56.6210.71.56.63
910.71.56.64/2910.71.56.65 – 10.71.56.7010.71.56.71
1010.71.56.72/2910.71.56.73 – 10.71.56.7810.71.56.79
1110.71.56.80/2910.71.56.81 – 10.71.56.8610.71.56.87
1210.71.56.88/2910.71.56.89 – 10.71.56.9410.71.56.95
1310.71.56.96/2910.71.56.97 – 10.71.56.10210.71.56.103
1410.71.56.104/2910.71.56.105 – 10.71.56.11010.71.56.111
1510.71.56.112/2910.71.56.113 – 10.71.56.11810.71.56.119
1610.71.56.120/2910.71.56.121 – 10.71.56.12610.71.56.127
1710.71.56.128/2910.71.56.129 – 10.71.56.13410.71.56.135
1810.71.56.136/2910.71.56.137 – 10.71.56.14210.71.56.143
1910.71.56.144/2910.71.56.145 – 10.71.56.15010.71.56.151
2010.71.56.152/2910.71.56.153 – 10.71.56.15810.71.56.159
2110.71.56.160/2910.71.56.161 – 10.71.56.16610.71.56.167
2210.71.56.168/2910.71.56.169 – 10.71.56.17410.71.56.175
2310.71.56.176/2910.71.56.177 – 10.71.56.18210.71.56.183
2410.71.56.184/2910.71.56.185 – 10.71.56.19010.71.56.191
2510.71.56.192/2910.71.56.193 – 10.71.56.19810.71.56.199
2610.71.56.200/2910.71.56.201 – 10.71.56.20610.71.56.207
2710.71.56.208/2910.71.56.209 – 10.71.56.21410.71.56.215
2810.71.56.216/2910.71.56.217 – 10.71.56.22210.71.56.223
2910.71.56.224/2910.71.56.225 – 10.71.56.23010.71.56.231
3010.71.56.232/2910.71.56.233 – 10.71.56.23810.71.56.239
3110.71.56.240/2910.71.56.241 – 10.71.56.24610.71.56.247
3210.71.56.248/2910.71.56.249 – 10.71.56.25410.71.56.255
3310.71.57.0/2910.71.57.1 – 10.71.57.610.71.57.7
3410.71.57.8/2910.71.57.9 – 10.71.57.1410.71.57.15
3510.71.57.16/2910.71.57.17 – 10.71.57.2210.71.57.23
3610.71.57.24/2910.71.57.25 – 10.71.57.3010.71.57.31
3710.71.57.32/2910.71.57.33 – 10.71.57.3810.71.57.39
3810.71.57.40/2910.71.57.41 – 10.71.57.4610.71.57.47
3910.71.57.48/2910.71.57.49 – 10.71.57.5410.71.57.55
4010.71.57.56/2910.71.57.57 – 10.71.57.6210.71.57.63
4110.71.57.64/2910.71.57.65 – 10.71.57.7010.71.57.71
4210.71.57.72/2910.71.57.73 – 10.71.57.7810.71.57.79
4310.71.57.80/2910.71.57.81 – 10.71.57.8610.71.57.87
4410.71.57.88/2910.71.57.89 – 10.71.57.9410.71.57.95
4510.71.57.96/2910.71.57.97 – 10.71.57.10210.71.57.103
4610.71.57.104/2910.71.57.105 – 10.71.57.11010.71.57.111
4710.71.57.112/2910.71.57.113 – 10.71.57.11810.71.57.119
4810.71.57.120/2910.71.57.121 – 10.71.57.12610.71.57.127
4910.71.57.128/2910.71.57.129 – 10.71.57.13410.71.57.135
5010.71.57.136/2910.71.57.137 – 10.71.57.14210.71.57.143
5110.71.57.144/2910.71.57.145 – 10.71.57.15010.71.57.151
5210.71.57.152/2910.71.57.153 – 10.71.57.15810.71.57.159
5310.71.57.160/2910.71.57.161 – 10.71.57.16610.71.57.167
5410.71.57.168/2910.71.57.169 – 10.71.57.17410.71.57.175
5510.71.57.176/2910.71.57.177 – 10.71.57.18210.71.57.183
5610.71.57.184/2910.71.57.185 – 10.71.57.19010.71.57.191
5710.71.57.192/2910.71.57.193 – 10.71.57.19810.71.57.199
5810.71.57.200/2910.71.57.201 – 10.71.57.20610.71.57.207
5910.71.57.208/2910.71.57.209 – 10.71.57.21410.71.57.215
6010.71.57.216/2910.71.57.217 – 10.71.57.22210.71.57.223
6110.71.57.224/2910.71.57.225 – 10.71.57.23010.71.57.231
6210.71.57.232/2910.71.57.233 – 10.71.57.23810.71.57.239
6310.71.57.240/2910.71.57.241 – 10.71.57.24610.71.57.247
6410.71.57.248/2910.71.57.249 – 10.71.57.25410.71.57.255
6510.71.58.0/2910.71.58.1 – 10.71.58.610.71.58.7
6610.71.58.8/2910.71.58.9 – 10.71.58.1410.71.58.15
6710.71.58.16/2910.71.58.17 – 10.71.58.2210.71.58.23
6810.71.58.24/2910.71.58.25 – 10.71.58.3010.71.58.31
6910.71.58.32/2910.71.58.33 – 10.71.58.3810.71.58.39
7010.71.58.40/2910.71.58.41 – 10.71.58.4610.71.58.47
7110.71.58.48/2910.71.58.49 – 10.71.58.5410.71.58.55
7210.71.58.56/2910.71.58.57 – 10.71.58.6210.71.58.63
7310.71.58.64/2910.71.58.65 – 10.71.58.7010.71.58.71
7410.71.58.72/2910.71.58.73 – 10.71.58.7810.71.58.79
7510.71.58.80/2910.71.58.81 – 10.71.58.8610.71.58.87
7610.71.58.88/2910.71.58.89 – 10.71.58.9410.71.58.95
7710.71.58.96/2910.71.58.97 – 10.71.58.10210.71.58.103
7810.71.58.104/2910.71.58.105 – 10.71.58.11010.71.58.111
7910.71.58.112/2910.71.58.113 – 10.71.58.11810.71.58.119
8010.71.58.120/2910.71.58.121 – 10.71.58.12610.71.58.127
8110.71.58.128/2910.71.58.129 – 10.71.58.13410.71.58.135
8210.71.58.136/2910.71.58.137 – 10.71.58.14210.71.58.143
8310.71.58.144/2910.71.58.145 – 10.71.58.15010.71.58.151
8410.71.58.152/2910.71.58.153 – 10.71.58.15810.71.58.159
8510.71.58.160/2910.71.58.161 – 10.71.58.16610.71.58.167
8610.71.58.168/2910.71.58.169 – 10.71.58.17410.71.58.175
8710.71.58.176/2910.71.58.177 – 10.71.58.18210.71.58.183
8810.71.58.184/2910.71.58.185 – 10.71.58.19010.71.58.191
8910.71.58.192/2910.71.58.193 – 10.71.58.19810.71.58.199
9010.71.58.200/2910.71.58.201 – 10.71.58.20610.71.58.207
9110.71.58.208/2910.71.58.209 – 10.71.58.21410.71.58.215
9210.71.58.216/2910.71.58.217 – 10.71.58.22210.71.58.223
9310.71.58.224/2910.71.58.225 – 10.71.58.23010.71.58.231
9410.71.58.232/2910.71.58.233 – 10.71.58.23810.71.58.239
9510.71.58.240/2910.71.58.241 – 10.71.58.24610.71.58.247
9610.71.58.248/2910.71.58.249 – 10.71.58.25410.71.58.255
9710.71.59.0/2910.71.59.1 – 10.71.59.610.71.59.7
9810.71.59.8/2910.71.59.9 – 10.71.59.1410.71.59.15
9910.71.59.16/2910.71.59.17 – 10.71.59.2210.71.59.23
10010.71.59.24/2910.71.59.25 – 10.71.59.3010.71.59.31
10110.71.59.32/2910.71.59.33 – 10.71.59.3810.71.59.39
10210.71.59.40/2910.71.59.41 – 10.71.59.4610.71.59.47
10310.71.59.48/2910.71.59.49 – 10.71.59.5410.71.59.55
10410.71.59.56/2910.71.59.57 – 10.71.59.6210.71.59.63
10510.71.59.64/2910.71.59.65 – 10.71.59.7010.71.59.71
10610.71.59.72/2910.71.59.73 – 10.71.59.7810.71.59.79
10710.71.59.80/2910.71.59.81 – 10.71.59.8610.71.59.87
10810.71.59.88/2910.71.59.89 – 10.71.59.9410.71.59.95
10910.71.59.96/2910.71.59.97 – 10.71.59.10210.71.59.103
11010.71.59.104/2910.71.59.105 – 10.71.59.11010.71.59.111
11110.71.59.112/2910.71.59.113 – 10.71.59.11810.71.59.119
11210.71.59.120/2910.71.59.121 – 10.71.59.12610.71.59.127
11310.71.59.128/2910.71.59.129 – 10.71.59.13410.71.59.135
11410.71.59.136/2910.71.59.137 – 10.71.59.14210.71.59.143
11510.71.59.144/2910.71.59.145 – 10.71.59.15010.71.59.151
11610.71.59.152/2910.71.59.153 – 10.71.59.15810.71.59.159
11710.71.59.160/2910.71.59.161 – 10.71.59.16610.71.59.167
11810.71.59.168/2910.71.59.169 – 10.71.59.17410.71.59.175
11910.71.59.176/2910.71.59.177 – 10.71.59.18210.71.59.183
12010.71.59.184/2910.71.59.185 – 10.71.59.19010.71.59.191
12110.71.59.192/2910.71.59.193 – 10.71.59.19810.71.59.199
12210.71.59.200/2910.71.59.201 – 10.71.59.20610.71.59.207
12310.71.59.208/2910.71.59.209 – 10.71.59.21410.71.59.215
12410.71.59.216/2910.71.59.217 – 10.71.59.22210.71.59.223
12510.71.59.224/2910.71.59.225 – 10.71.59.23010.71.59.231
12610.71.59.232/2910.71.59.233 – 10.71.59.23810.71.59.239
12710.71.59.240/2910.71.59.241 – 10.71.59.24610.71.59.247
12810.71.59.248/2910.71.59.249 – 10.71.59.25410.71.59.255
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 →