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)10.65.72.0/22
network10.65.72.0/22
broadcast10.65.75.255
first host10.65.72.1
last host10.65.75.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.65.72.0/22
address00001010.01000001.01001000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01000001.01001000.00000000
broadcast00001010.01000001.01001011.11111111
green = network part, grey = host part
hex0x0a414800
decimal172050432
reverse dns0.72.65.10.in-addr.arpa
ipv4-mapped::ffff:a41:4800

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.65.72.0/2910.65.72.1 – 10.65.72.610.65.72.7
210.65.72.8/2910.65.72.9 – 10.65.72.1410.65.72.15
310.65.72.16/2910.65.72.17 – 10.65.72.2210.65.72.23
410.65.72.24/2910.65.72.25 – 10.65.72.3010.65.72.31
510.65.72.32/2910.65.72.33 – 10.65.72.3810.65.72.39
610.65.72.40/2910.65.72.41 – 10.65.72.4610.65.72.47
710.65.72.48/2910.65.72.49 – 10.65.72.5410.65.72.55
810.65.72.56/2910.65.72.57 – 10.65.72.6210.65.72.63
910.65.72.64/2910.65.72.65 – 10.65.72.7010.65.72.71
1010.65.72.72/2910.65.72.73 – 10.65.72.7810.65.72.79
1110.65.72.80/2910.65.72.81 – 10.65.72.8610.65.72.87
1210.65.72.88/2910.65.72.89 – 10.65.72.9410.65.72.95
1310.65.72.96/2910.65.72.97 – 10.65.72.10210.65.72.103
1410.65.72.104/2910.65.72.105 – 10.65.72.11010.65.72.111
1510.65.72.112/2910.65.72.113 – 10.65.72.11810.65.72.119
1610.65.72.120/2910.65.72.121 – 10.65.72.12610.65.72.127
1710.65.72.128/2910.65.72.129 – 10.65.72.13410.65.72.135
1810.65.72.136/2910.65.72.137 – 10.65.72.14210.65.72.143
1910.65.72.144/2910.65.72.145 – 10.65.72.15010.65.72.151
2010.65.72.152/2910.65.72.153 – 10.65.72.15810.65.72.159
2110.65.72.160/2910.65.72.161 – 10.65.72.16610.65.72.167
2210.65.72.168/2910.65.72.169 – 10.65.72.17410.65.72.175
2310.65.72.176/2910.65.72.177 – 10.65.72.18210.65.72.183
2410.65.72.184/2910.65.72.185 – 10.65.72.19010.65.72.191
2510.65.72.192/2910.65.72.193 – 10.65.72.19810.65.72.199
2610.65.72.200/2910.65.72.201 – 10.65.72.20610.65.72.207
2710.65.72.208/2910.65.72.209 – 10.65.72.21410.65.72.215
2810.65.72.216/2910.65.72.217 – 10.65.72.22210.65.72.223
2910.65.72.224/2910.65.72.225 – 10.65.72.23010.65.72.231
3010.65.72.232/2910.65.72.233 – 10.65.72.23810.65.72.239
3110.65.72.240/2910.65.72.241 – 10.65.72.24610.65.72.247
3210.65.72.248/2910.65.72.249 – 10.65.72.25410.65.72.255
3310.65.73.0/2910.65.73.1 – 10.65.73.610.65.73.7
3410.65.73.8/2910.65.73.9 – 10.65.73.1410.65.73.15
3510.65.73.16/2910.65.73.17 – 10.65.73.2210.65.73.23
3610.65.73.24/2910.65.73.25 – 10.65.73.3010.65.73.31
3710.65.73.32/2910.65.73.33 – 10.65.73.3810.65.73.39
3810.65.73.40/2910.65.73.41 – 10.65.73.4610.65.73.47
3910.65.73.48/2910.65.73.49 – 10.65.73.5410.65.73.55
4010.65.73.56/2910.65.73.57 – 10.65.73.6210.65.73.63
4110.65.73.64/2910.65.73.65 – 10.65.73.7010.65.73.71
4210.65.73.72/2910.65.73.73 – 10.65.73.7810.65.73.79
4310.65.73.80/2910.65.73.81 – 10.65.73.8610.65.73.87
4410.65.73.88/2910.65.73.89 – 10.65.73.9410.65.73.95
4510.65.73.96/2910.65.73.97 – 10.65.73.10210.65.73.103
4610.65.73.104/2910.65.73.105 – 10.65.73.11010.65.73.111
4710.65.73.112/2910.65.73.113 – 10.65.73.11810.65.73.119
4810.65.73.120/2910.65.73.121 – 10.65.73.12610.65.73.127
4910.65.73.128/2910.65.73.129 – 10.65.73.13410.65.73.135
5010.65.73.136/2910.65.73.137 – 10.65.73.14210.65.73.143
5110.65.73.144/2910.65.73.145 – 10.65.73.15010.65.73.151
5210.65.73.152/2910.65.73.153 – 10.65.73.15810.65.73.159
5310.65.73.160/2910.65.73.161 – 10.65.73.16610.65.73.167
5410.65.73.168/2910.65.73.169 – 10.65.73.17410.65.73.175
5510.65.73.176/2910.65.73.177 – 10.65.73.18210.65.73.183
5610.65.73.184/2910.65.73.185 – 10.65.73.19010.65.73.191
5710.65.73.192/2910.65.73.193 – 10.65.73.19810.65.73.199
5810.65.73.200/2910.65.73.201 – 10.65.73.20610.65.73.207
5910.65.73.208/2910.65.73.209 – 10.65.73.21410.65.73.215
6010.65.73.216/2910.65.73.217 – 10.65.73.22210.65.73.223
6110.65.73.224/2910.65.73.225 – 10.65.73.23010.65.73.231
6210.65.73.232/2910.65.73.233 – 10.65.73.23810.65.73.239
6310.65.73.240/2910.65.73.241 – 10.65.73.24610.65.73.247
6410.65.73.248/2910.65.73.249 – 10.65.73.25410.65.73.255
6510.65.74.0/2910.65.74.1 – 10.65.74.610.65.74.7
6610.65.74.8/2910.65.74.9 – 10.65.74.1410.65.74.15
6710.65.74.16/2910.65.74.17 – 10.65.74.2210.65.74.23
6810.65.74.24/2910.65.74.25 – 10.65.74.3010.65.74.31
6910.65.74.32/2910.65.74.33 – 10.65.74.3810.65.74.39
7010.65.74.40/2910.65.74.41 – 10.65.74.4610.65.74.47
7110.65.74.48/2910.65.74.49 – 10.65.74.5410.65.74.55
7210.65.74.56/2910.65.74.57 – 10.65.74.6210.65.74.63
7310.65.74.64/2910.65.74.65 – 10.65.74.7010.65.74.71
7410.65.74.72/2910.65.74.73 – 10.65.74.7810.65.74.79
7510.65.74.80/2910.65.74.81 – 10.65.74.8610.65.74.87
7610.65.74.88/2910.65.74.89 – 10.65.74.9410.65.74.95
7710.65.74.96/2910.65.74.97 – 10.65.74.10210.65.74.103
7810.65.74.104/2910.65.74.105 – 10.65.74.11010.65.74.111
7910.65.74.112/2910.65.74.113 – 10.65.74.11810.65.74.119
8010.65.74.120/2910.65.74.121 – 10.65.74.12610.65.74.127
8110.65.74.128/2910.65.74.129 – 10.65.74.13410.65.74.135
8210.65.74.136/2910.65.74.137 – 10.65.74.14210.65.74.143
8310.65.74.144/2910.65.74.145 – 10.65.74.15010.65.74.151
8410.65.74.152/2910.65.74.153 – 10.65.74.15810.65.74.159
8510.65.74.160/2910.65.74.161 – 10.65.74.16610.65.74.167
8610.65.74.168/2910.65.74.169 – 10.65.74.17410.65.74.175
8710.65.74.176/2910.65.74.177 – 10.65.74.18210.65.74.183
8810.65.74.184/2910.65.74.185 – 10.65.74.19010.65.74.191
8910.65.74.192/2910.65.74.193 – 10.65.74.19810.65.74.199
9010.65.74.200/2910.65.74.201 – 10.65.74.20610.65.74.207
9110.65.74.208/2910.65.74.209 – 10.65.74.21410.65.74.215
9210.65.74.216/2910.65.74.217 – 10.65.74.22210.65.74.223
9310.65.74.224/2910.65.74.225 – 10.65.74.23010.65.74.231
9410.65.74.232/2910.65.74.233 – 10.65.74.23810.65.74.239
9510.65.74.240/2910.65.74.241 – 10.65.74.24610.65.74.247
9610.65.74.248/2910.65.74.249 – 10.65.74.25410.65.74.255
9710.65.75.0/2910.65.75.1 – 10.65.75.610.65.75.7
9810.65.75.8/2910.65.75.9 – 10.65.75.1410.65.75.15
9910.65.75.16/2910.65.75.17 – 10.65.75.2210.65.75.23
10010.65.75.24/2910.65.75.25 – 10.65.75.3010.65.75.31
10110.65.75.32/2910.65.75.33 – 10.65.75.3810.65.75.39
10210.65.75.40/2910.65.75.41 – 10.65.75.4610.65.75.47
10310.65.75.48/2910.65.75.49 – 10.65.75.5410.65.75.55
10410.65.75.56/2910.65.75.57 – 10.65.75.6210.65.75.63
10510.65.75.64/2910.65.75.65 – 10.65.75.7010.65.75.71
10610.65.75.72/2910.65.75.73 – 10.65.75.7810.65.75.79
10710.65.75.80/2910.65.75.81 – 10.65.75.8610.65.75.87
10810.65.75.88/2910.65.75.89 – 10.65.75.9410.65.75.95
10910.65.75.96/2910.65.75.97 – 10.65.75.10210.65.75.103
11010.65.75.104/2910.65.75.105 – 10.65.75.11010.65.75.111
11110.65.75.112/2910.65.75.113 – 10.65.75.11810.65.75.119
11210.65.75.120/2910.65.75.121 – 10.65.75.12610.65.75.127
11310.65.75.128/2910.65.75.129 – 10.65.75.13410.65.75.135
11410.65.75.136/2910.65.75.137 – 10.65.75.14210.65.75.143
11510.65.75.144/2910.65.75.145 – 10.65.75.15010.65.75.151
11610.65.75.152/2910.65.75.153 – 10.65.75.15810.65.75.159
11710.65.75.160/2910.65.75.161 – 10.65.75.16610.65.75.167
11810.65.75.168/2910.65.75.169 – 10.65.75.17410.65.75.175
11910.65.75.176/2910.65.75.177 – 10.65.75.18210.65.75.183
12010.65.75.184/2910.65.75.185 – 10.65.75.19010.65.75.191
12110.65.75.192/2910.65.75.193 – 10.65.75.19810.65.75.199
12210.65.75.200/2910.65.75.201 – 10.65.75.20610.65.75.207
12310.65.75.208/2910.65.75.209 – 10.65.75.21410.65.75.215
12410.65.75.216/2910.65.75.217 – 10.65.75.22210.65.75.223
12510.65.75.224/2910.65.75.225 – 10.65.75.23010.65.75.231
12610.65.75.232/2910.65.75.233 – 10.65.75.23810.65.75.239
12710.65.75.240/2910.65.75.241 – 10.65.75.24610.65.75.247
12810.65.75.248/2910.65.75.249 – 10.65.75.25410.65.75.255
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 →