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)10.70.4.0/22
network10.70.4.0/22
broadcast10.70.7.255
first host10.70.4.1
last host10.70.7.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.70.4.0/22
address00001010.01000110.00000100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01000110.00000100.00000000
broadcast00001010.01000110.00000111.11111111
green = network part, grey = host part
hex0x0a460400
decimal172360704
reverse dns0.4.70.10.in-addr.arpa
ipv4-mapped::ffff:a46:400

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.70.4.0/2910.70.4.1 – 10.70.4.610.70.4.7
210.70.4.8/2910.70.4.9 – 10.70.4.1410.70.4.15
310.70.4.16/2910.70.4.17 – 10.70.4.2210.70.4.23
410.70.4.24/2910.70.4.25 – 10.70.4.3010.70.4.31
510.70.4.32/2910.70.4.33 – 10.70.4.3810.70.4.39
610.70.4.40/2910.70.4.41 – 10.70.4.4610.70.4.47
710.70.4.48/2910.70.4.49 – 10.70.4.5410.70.4.55
810.70.4.56/2910.70.4.57 – 10.70.4.6210.70.4.63
910.70.4.64/2910.70.4.65 – 10.70.4.7010.70.4.71
1010.70.4.72/2910.70.4.73 – 10.70.4.7810.70.4.79
1110.70.4.80/2910.70.4.81 – 10.70.4.8610.70.4.87
1210.70.4.88/2910.70.4.89 – 10.70.4.9410.70.4.95
1310.70.4.96/2910.70.4.97 – 10.70.4.10210.70.4.103
1410.70.4.104/2910.70.4.105 – 10.70.4.11010.70.4.111
1510.70.4.112/2910.70.4.113 – 10.70.4.11810.70.4.119
1610.70.4.120/2910.70.4.121 – 10.70.4.12610.70.4.127
1710.70.4.128/2910.70.4.129 – 10.70.4.13410.70.4.135
1810.70.4.136/2910.70.4.137 – 10.70.4.14210.70.4.143
1910.70.4.144/2910.70.4.145 – 10.70.4.15010.70.4.151
2010.70.4.152/2910.70.4.153 – 10.70.4.15810.70.4.159
2110.70.4.160/2910.70.4.161 – 10.70.4.16610.70.4.167
2210.70.4.168/2910.70.4.169 – 10.70.4.17410.70.4.175
2310.70.4.176/2910.70.4.177 – 10.70.4.18210.70.4.183
2410.70.4.184/2910.70.4.185 – 10.70.4.19010.70.4.191
2510.70.4.192/2910.70.4.193 – 10.70.4.19810.70.4.199
2610.70.4.200/2910.70.4.201 – 10.70.4.20610.70.4.207
2710.70.4.208/2910.70.4.209 – 10.70.4.21410.70.4.215
2810.70.4.216/2910.70.4.217 – 10.70.4.22210.70.4.223
2910.70.4.224/2910.70.4.225 – 10.70.4.23010.70.4.231
3010.70.4.232/2910.70.4.233 – 10.70.4.23810.70.4.239
3110.70.4.240/2910.70.4.241 – 10.70.4.24610.70.4.247
3210.70.4.248/2910.70.4.249 – 10.70.4.25410.70.4.255
3310.70.5.0/2910.70.5.1 – 10.70.5.610.70.5.7
3410.70.5.8/2910.70.5.9 – 10.70.5.1410.70.5.15
3510.70.5.16/2910.70.5.17 – 10.70.5.2210.70.5.23
3610.70.5.24/2910.70.5.25 – 10.70.5.3010.70.5.31
3710.70.5.32/2910.70.5.33 – 10.70.5.3810.70.5.39
3810.70.5.40/2910.70.5.41 – 10.70.5.4610.70.5.47
3910.70.5.48/2910.70.5.49 – 10.70.5.5410.70.5.55
4010.70.5.56/2910.70.5.57 – 10.70.5.6210.70.5.63
4110.70.5.64/2910.70.5.65 – 10.70.5.7010.70.5.71
4210.70.5.72/2910.70.5.73 – 10.70.5.7810.70.5.79
4310.70.5.80/2910.70.5.81 – 10.70.5.8610.70.5.87
4410.70.5.88/2910.70.5.89 – 10.70.5.9410.70.5.95
4510.70.5.96/2910.70.5.97 – 10.70.5.10210.70.5.103
4610.70.5.104/2910.70.5.105 – 10.70.5.11010.70.5.111
4710.70.5.112/2910.70.5.113 – 10.70.5.11810.70.5.119
4810.70.5.120/2910.70.5.121 – 10.70.5.12610.70.5.127
4910.70.5.128/2910.70.5.129 – 10.70.5.13410.70.5.135
5010.70.5.136/2910.70.5.137 – 10.70.5.14210.70.5.143
5110.70.5.144/2910.70.5.145 – 10.70.5.15010.70.5.151
5210.70.5.152/2910.70.5.153 – 10.70.5.15810.70.5.159
5310.70.5.160/2910.70.5.161 – 10.70.5.16610.70.5.167
5410.70.5.168/2910.70.5.169 – 10.70.5.17410.70.5.175
5510.70.5.176/2910.70.5.177 – 10.70.5.18210.70.5.183
5610.70.5.184/2910.70.5.185 – 10.70.5.19010.70.5.191
5710.70.5.192/2910.70.5.193 – 10.70.5.19810.70.5.199
5810.70.5.200/2910.70.5.201 – 10.70.5.20610.70.5.207
5910.70.5.208/2910.70.5.209 – 10.70.5.21410.70.5.215
6010.70.5.216/2910.70.5.217 – 10.70.5.22210.70.5.223
6110.70.5.224/2910.70.5.225 – 10.70.5.23010.70.5.231
6210.70.5.232/2910.70.5.233 – 10.70.5.23810.70.5.239
6310.70.5.240/2910.70.5.241 – 10.70.5.24610.70.5.247
6410.70.5.248/2910.70.5.249 – 10.70.5.25410.70.5.255
6510.70.6.0/2910.70.6.1 – 10.70.6.610.70.6.7
6610.70.6.8/2910.70.6.9 – 10.70.6.1410.70.6.15
6710.70.6.16/2910.70.6.17 – 10.70.6.2210.70.6.23
6810.70.6.24/2910.70.6.25 – 10.70.6.3010.70.6.31
6910.70.6.32/2910.70.6.33 – 10.70.6.3810.70.6.39
7010.70.6.40/2910.70.6.41 – 10.70.6.4610.70.6.47
7110.70.6.48/2910.70.6.49 – 10.70.6.5410.70.6.55
7210.70.6.56/2910.70.6.57 – 10.70.6.6210.70.6.63
7310.70.6.64/2910.70.6.65 – 10.70.6.7010.70.6.71
7410.70.6.72/2910.70.6.73 – 10.70.6.7810.70.6.79
7510.70.6.80/2910.70.6.81 – 10.70.6.8610.70.6.87
7610.70.6.88/2910.70.6.89 – 10.70.6.9410.70.6.95
7710.70.6.96/2910.70.6.97 – 10.70.6.10210.70.6.103
7810.70.6.104/2910.70.6.105 – 10.70.6.11010.70.6.111
7910.70.6.112/2910.70.6.113 – 10.70.6.11810.70.6.119
8010.70.6.120/2910.70.6.121 – 10.70.6.12610.70.6.127
8110.70.6.128/2910.70.6.129 – 10.70.6.13410.70.6.135
8210.70.6.136/2910.70.6.137 – 10.70.6.14210.70.6.143
8310.70.6.144/2910.70.6.145 – 10.70.6.15010.70.6.151
8410.70.6.152/2910.70.6.153 – 10.70.6.15810.70.6.159
8510.70.6.160/2910.70.6.161 – 10.70.6.16610.70.6.167
8610.70.6.168/2910.70.6.169 – 10.70.6.17410.70.6.175
8710.70.6.176/2910.70.6.177 – 10.70.6.18210.70.6.183
8810.70.6.184/2910.70.6.185 – 10.70.6.19010.70.6.191
8910.70.6.192/2910.70.6.193 – 10.70.6.19810.70.6.199
9010.70.6.200/2910.70.6.201 – 10.70.6.20610.70.6.207
9110.70.6.208/2910.70.6.209 – 10.70.6.21410.70.6.215
9210.70.6.216/2910.70.6.217 – 10.70.6.22210.70.6.223
9310.70.6.224/2910.70.6.225 – 10.70.6.23010.70.6.231
9410.70.6.232/2910.70.6.233 – 10.70.6.23810.70.6.239
9510.70.6.240/2910.70.6.241 – 10.70.6.24610.70.6.247
9610.70.6.248/2910.70.6.249 – 10.70.6.25410.70.6.255
9710.70.7.0/2910.70.7.1 – 10.70.7.610.70.7.7
9810.70.7.8/2910.70.7.9 – 10.70.7.1410.70.7.15
9910.70.7.16/2910.70.7.17 – 10.70.7.2210.70.7.23
10010.70.7.24/2910.70.7.25 – 10.70.7.3010.70.7.31
10110.70.7.32/2910.70.7.33 – 10.70.7.3810.70.7.39
10210.70.7.40/2910.70.7.41 – 10.70.7.4610.70.7.47
10310.70.7.48/2910.70.7.49 – 10.70.7.5410.70.7.55
10410.70.7.56/2910.70.7.57 – 10.70.7.6210.70.7.63
10510.70.7.64/2910.70.7.65 – 10.70.7.7010.70.7.71
10610.70.7.72/2910.70.7.73 – 10.70.7.7810.70.7.79
10710.70.7.80/2910.70.7.81 – 10.70.7.8610.70.7.87
10810.70.7.88/2910.70.7.89 – 10.70.7.9410.70.7.95
10910.70.7.96/2910.70.7.97 – 10.70.7.10210.70.7.103
11010.70.7.104/2910.70.7.105 – 10.70.7.11010.70.7.111
11110.70.7.112/2910.70.7.113 – 10.70.7.11810.70.7.119
11210.70.7.120/2910.70.7.121 – 10.70.7.12610.70.7.127
11310.70.7.128/2910.70.7.129 – 10.70.7.13410.70.7.135
11410.70.7.136/2910.70.7.137 – 10.70.7.14210.70.7.143
11510.70.7.144/2910.70.7.145 – 10.70.7.15010.70.7.151
11610.70.7.152/2910.70.7.153 – 10.70.7.15810.70.7.159
11710.70.7.160/2910.70.7.161 – 10.70.7.16610.70.7.167
11810.70.7.168/2910.70.7.169 – 10.70.7.17410.70.7.175
11910.70.7.176/2910.70.7.177 – 10.70.7.18210.70.7.183
12010.70.7.184/2910.70.7.185 – 10.70.7.19010.70.7.191
12110.70.7.192/2910.70.7.193 – 10.70.7.19810.70.7.199
12210.70.7.200/2910.70.7.201 – 10.70.7.20610.70.7.207
12310.70.7.208/2910.70.7.209 – 10.70.7.21410.70.7.215
12410.70.7.216/2910.70.7.217 – 10.70.7.22210.70.7.223
12510.70.7.224/2910.70.7.225 – 10.70.7.23010.70.7.231
12610.70.7.232/2910.70.7.233 – 10.70.7.23810.70.7.239
12710.70.7.240/2910.70.7.241 – 10.70.7.24610.70.7.247
12810.70.7.248/2910.70.7.249 – 10.70.7.25410.70.7.255
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 →