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)10.65.32.0/22
network10.65.32.0/22
broadcast10.65.35.255
first host10.65.32.1
last host10.65.35.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.65.32.0/22
address00001010.01000001.00100000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01000001.00100000.00000000
broadcast00001010.01000001.00100011.11111111
green = network part, grey = host part
hex0x0a412000
decimal172040192
reverse dns0.32.65.10.in-addr.arpa
ipv4-mapped::ffff:a41:2000

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.65.32.0/2910.65.32.1 – 10.65.32.610.65.32.7
210.65.32.8/2910.65.32.9 – 10.65.32.1410.65.32.15
310.65.32.16/2910.65.32.17 – 10.65.32.2210.65.32.23
410.65.32.24/2910.65.32.25 – 10.65.32.3010.65.32.31
510.65.32.32/2910.65.32.33 – 10.65.32.3810.65.32.39
610.65.32.40/2910.65.32.41 – 10.65.32.4610.65.32.47
710.65.32.48/2910.65.32.49 – 10.65.32.5410.65.32.55
810.65.32.56/2910.65.32.57 – 10.65.32.6210.65.32.63
910.65.32.64/2910.65.32.65 – 10.65.32.7010.65.32.71
1010.65.32.72/2910.65.32.73 – 10.65.32.7810.65.32.79
1110.65.32.80/2910.65.32.81 – 10.65.32.8610.65.32.87
1210.65.32.88/2910.65.32.89 – 10.65.32.9410.65.32.95
1310.65.32.96/2910.65.32.97 – 10.65.32.10210.65.32.103
1410.65.32.104/2910.65.32.105 – 10.65.32.11010.65.32.111
1510.65.32.112/2910.65.32.113 – 10.65.32.11810.65.32.119
1610.65.32.120/2910.65.32.121 – 10.65.32.12610.65.32.127
1710.65.32.128/2910.65.32.129 – 10.65.32.13410.65.32.135
1810.65.32.136/2910.65.32.137 – 10.65.32.14210.65.32.143
1910.65.32.144/2910.65.32.145 – 10.65.32.15010.65.32.151
2010.65.32.152/2910.65.32.153 – 10.65.32.15810.65.32.159
2110.65.32.160/2910.65.32.161 – 10.65.32.16610.65.32.167
2210.65.32.168/2910.65.32.169 – 10.65.32.17410.65.32.175
2310.65.32.176/2910.65.32.177 – 10.65.32.18210.65.32.183
2410.65.32.184/2910.65.32.185 – 10.65.32.19010.65.32.191
2510.65.32.192/2910.65.32.193 – 10.65.32.19810.65.32.199
2610.65.32.200/2910.65.32.201 – 10.65.32.20610.65.32.207
2710.65.32.208/2910.65.32.209 – 10.65.32.21410.65.32.215
2810.65.32.216/2910.65.32.217 – 10.65.32.22210.65.32.223
2910.65.32.224/2910.65.32.225 – 10.65.32.23010.65.32.231
3010.65.32.232/2910.65.32.233 – 10.65.32.23810.65.32.239
3110.65.32.240/2910.65.32.241 – 10.65.32.24610.65.32.247
3210.65.32.248/2910.65.32.249 – 10.65.32.25410.65.32.255
3310.65.33.0/2910.65.33.1 – 10.65.33.610.65.33.7
3410.65.33.8/2910.65.33.9 – 10.65.33.1410.65.33.15
3510.65.33.16/2910.65.33.17 – 10.65.33.2210.65.33.23
3610.65.33.24/2910.65.33.25 – 10.65.33.3010.65.33.31
3710.65.33.32/2910.65.33.33 – 10.65.33.3810.65.33.39
3810.65.33.40/2910.65.33.41 – 10.65.33.4610.65.33.47
3910.65.33.48/2910.65.33.49 – 10.65.33.5410.65.33.55
4010.65.33.56/2910.65.33.57 – 10.65.33.6210.65.33.63
4110.65.33.64/2910.65.33.65 – 10.65.33.7010.65.33.71
4210.65.33.72/2910.65.33.73 – 10.65.33.7810.65.33.79
4310.65.33.80/2910.65.33.81 – 10.65.33.8610.65.33.87
4410.65.33.88/2910.65.33.89 – 10.65.33.9410.65.33.95
4510.65.33.96/2910.65.33.97 – 10.65.33.10210.65.33.103
4610.65.33.104/2910.65.33.105 – 10.65.33.11010.65.33.111
4710.65.33.112/2910.65.33.113 – 10.65.33.11810.65.33.119
4810.65.33.120/2910.65.33.121 – 10.65.33.12610.65.33.127
4910.65.33.128/2910.65.33.129 – 10.65.33.13410.65.33.135
5010.65.33.136/2910.65.33.137 – 10.65.33.14210.65.33.143
5110.65.33.144/2910.65.33.145 – 10.65.33.15010.65.33.151
5210.65.33.152/2910.65.33.153 – 10.65.33.15810.65.33.159
5310.65.33.160/2910.65.33.161 – 10.65.33.16610.65.33.167
5410.65.33.168/2910.65.33.169 – 10.65.33.17410.65.33.175
5510.65.33.176/2910.65.33.177 – 10.65.33.18210.65.33.183
5610.65.33.184/2910.65.33.185 – 10.65.33.19010.65.33.191
5710.65.33.192/2910.65.33.193 – 10.65.33.19810.65.33.199
5810.65.33.200/2910.65.33.201 – 10.65.33.20610.65.33.207
5910.65.33.208/2910.65.33.209 – 10.65.33.21410.65.33.215
6010.65.33.216/2910.65.33.217 – 10.65.33.22210.65.33.223
6110.65.33.224/2910.65.33.225 – 10.65.33.23010.65.33.231
6210.65.33.232/2910.65.33.233 – 10.65.33.23810.65.33.239
6310.65.33.240/2910.65.33.241 – 10.65.33.24610.65.33.247
6410.65.33.248/2910.65.33.249 – 10.65.33.25410.65.33.255
6510.65.34.0/2910.65.34.1 – 10.65.34.610.65.34.7
6610.65.34.8/2910.65.34.9 – 10.65.34.1410.65.34.15
6710.65.34.16/2910.65.34.17 – 10.65.34.2210.65.34.23
6810.65.34.24/2910.65.34.25 – 10.65.34.3010.65.34.31
6910.65.34.32/2910.65.34.33 – 10.65.34.3810.65.34.39
7010.65.34.40/2910.65.34.41 – 10.65.34.4610.65.34.47
7110.65.34.48/2910.65.34.49 – 10.65.34.5410.65.34.55
7210.65.34.56/2910.65.34.57 – 10.65.34.6210.65.34.63
7310.65.34.64/2910.65.34.65 – 10.65.34.7010.65.34.71
7410.65.34.72/2910.65.34.73 – 10.65.34.7810.65.34.79
7510.65.34.80/2910.65.34.81 – 10.65.34.8610.65.34.87
7610.65.34.88/2910.65.34.89 – 10.65.34.9410.65.34.95
7710.65.34.96/2910.65.34.97 – 10.65.34.10210.65.34.103
7810.65.34.104/2910.65.34.105 – 10.65.34.11010.65.34.111
7910.65.34.112/2910.65.34.113 – 10.65.34.11810.65.34.119
8010.65.34.120/2910.65.34.121 – 10.65.34.12610.65.34.127
8110.65.34.128/2910.65.34.129 – 10.65.34.13410.65.34.135
8210.65.34.136/2910.65.34.137 – 10.65.34.14210.65.34.143
8310.65.34.144/2910.65.34.145 – 10.65.34.15010.65.34.151
8410.65.34.152/2910.65.34.153 – 10.65.34.15810.65.34.159
8510.65.34.160/2910.65.34.161 – 10.65.34.16610.65.34.167
8610.65.34.168/2910.65.34.169 – 10.65.34.17410.65.34.175
8710.65.34.176/2910.65.34.177 – 10.65.34.18210.65.34.183
8810.65.34.184/2910.65.34.185 – 10.65.34.19010.65.34.191
8910.65.34.192/2910.65.34.193 – 10.65.34.19810.65.34.199
9010.65.34.200/2910.65.34.201 – 10.65.34.20610.65.34.207
9110.65.34.208/2910.65.34.209 – 10.65.34.21410.65.34.215
9210.65.34.216/2910.65.34.217 – 10.65.34.22210.65.34.223
9310.65.34.224/2910.65.34.225 – 10.65.34.23010.65.34.231
9410.65.34.232/2910.65.34.233 – 10.65.34.23810.65.34.239
9510.65.34.240/2910.65.34.241 – 10.65.34.24610.65.34.247
9610.65.34.248/2910.65.34.249 – 10.65.34.25410.65.34.255
9710.65.35.0/2910.65.35.1 – 10.65.35.610.65.35.7
9810.65.35.8/2910.65.35.9 – 10.65.35.1410.65.35.15
9910.65.35.16/2910.65.35.17 – 10.65.35.2210.65.35.23
10010.65.35.24/2910.65.35.25 – 10.65.35.3010.65.35.31
10110.65.35.32/2910.65.35.33 – 10.65.35.3810.65.35.39
10210.65.35.40/2910.65.35.41 – 10.65.35.4610.65.35.47
10310.65.35.48/2910.65.35.49 – 10.65.35.5410.65.35.55
10410.65.35.56/2910.65.35.57 – 10.65.35.6210.65.35.63
10510.65.35.64/2910.65.35.65 – 10.65.35.7010.65.35.71
10610.65.35.72/2910.65.35.73 – 10.65.35.7810.65.35.79
10710.65.35.80/2910.65.35.81 – 10.65.35.8610.65.35.87
10810.65.35.88/2910.65.35.89 – 10.65.35.9410.65.35.95
10910.65.35.96/2910.65.35.97 – 10.65.35.10210.65.35.103
11010.65.35.104/2910.65.35.105 – 10.65.35.11010.65.35.111
11110.65.35.112/2910.65.35.113 – 10.65.35.11810.65.35.119
11210.65.35.120/2910.65.35.121 – 10.65.35.12610.65.35.127
11310.65.35.128/2910.65.35.129 – 10.65.35.13410.65.35.135
11410.65.35.136/2910.65.35.137 – 10.65.35.14210.65.35.143
11510.65.35.144/2910.65.35.145 – 10.65.35.15010.65.35.151
11610.65.35.152/2910.65.35.153 – 10.65.35.15810.65.35.159
11710.65.35.160/2910.65.35.161 – 10.65.35.16610.65.35.167
11810.65.35.168/2910.65.35.169 – 10.65.35.17410.65.35.175
11910.65.35.176/2910.65.35.177 – 10.65.35.18210.65.35.183
12010.65.35.184/2910.65.35.185 – 10.65.35.19010.65.35.191
12110.65.35.192/2910.65.35.193 – 10.65.35.19810.65.35.199
12210.65.35.200/2910.65.35.201 – 10.65.35.20610.65.35.207
12310.65.35.208/2910.65.35.209 – 10.65.35.21410.65.35.215
12410.65.35.216/2910.65.35.217 – 10.65.35.22210.65.35.223
12510.65.35.224/2910.65.35.225 – 10.65.35.23010.65.35.231
12610.65.35.232/2910.65.35.233 – 10.65.35.23810.65.35.239
12710.65.35.240/2910.65.35.241 – 10.65.35.24610.65.35.247
12810.65.35.248/2910.65.35.249 – 10.65.35.25410.65.35.255
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 →