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)10.65.28.0/22
network10.65.28.0/22
broadcast10.65.31.255
first host10.65.28.1
last host10.65.31.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.65.28.0/22
address00001010.01000001.00011100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.01000001.00011100.00000000
broadcast00001010.01000001.00011111.11111111
green = network part, grey = host part
hex0x0a411c00
decimal172039168
reverse dns0.28.65.10.in-addr.arpa
ipv4-mapped::ffff:a41:1c00

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.65.28.0/2910.65.28.1 – 10.65.28.610.65.28.7
210.65.28.8/2910.65.28.9 – 10.65.28.1410.65.28.15
310.65.28.16/2910.65.28.17 – 10.65.28.2210.65.28.23
410.65.28.24/2910.65.28.25 – 10.65.28.3010.65.28.31
510.65.28.32/2910.65.28.33 – 10.65.28.3810.65.28.39
610.65.28.40/2910.65.28.41 – 10.65.28.4610.65.28.47
710.65.28.48/2910.65.28.49 – 10.65.28.5410.65.28.55
810.65.28.56/2910.65.28.57 – 10.65.28.6210.65.28.63
910.65.28.64/2910.65.28.65 – 10.65.28.7010.65.28.71
1010.65.28.72/2910.65.28.73 – 10.65.28.7810.65.28.79
1110.65.28.80/2910.65.28.81 – 10.65.28.8610.65.28.87
1210.65.28.88/2910.65.28.89 – 10.65.28.9410.65.28.95
1310.65.28.96/2910.65.28.97 – 10.65.28.10210.65.28.103
1410.65.28.104/2910.65.28.105 – 10.65.28.11010.65.28.111
1510.65.28.112/2910.65.28.113 – 10.65.28.11810.65.28.119
1610.65.28.120/2910.65.28.121 – 10.65.28.12610.65.28.127
1710.65.28.128/2910.65.28.129 – 10.65.28.13410.65.28.135
1810.65.28.136/2910.65.28.137 – 10.65.28.14210.65.28.143
1910.65.28.144/2910.65.28.145 – 10.65.28.15010.65.28.151
2010.65.28.152/2910.65.28.153 – 10.65.28.15810.65.28.159
2110.65.28.160/2910.65.28.161 – 10.65.28.16610.65.28.167
2210.65.28.168/2910.65.28.169 – 10.65.28.17410.65.28.175
2310.65.28.176/2910.65.28.177 – 10.65.28.18210.65.28.183
2410.65.28.184/2910.65.28.185 – 10.65.28.19010.65.28.191
2510.65.28.192/2910.65.28.193 – 10.65.28.19810.65.28.199
2610.65.28.200/2910.65.28.201 – 10.65.28.20610.65.28.207
2710.65.28.208/2910.65.28.209 – 10.65.28.21410.65.28.215
2810.65.28.216/2910.65.28.217 – 10.65.28.22210.65.28.223
2910.65.28.224/2910.65.28.225 – 10.65.28.23010.65.28.231
3010.65.28.232/2910.65.28.233 – 10.65.28.23810.65.28.239
3110.65.28.240/2910.65.28.241 – 10.65.28.24610.65.28.247
3210.65.28.248/2910.65.28.249 – 10.65.28.25410.65.28.255
3310.65.29.0/2910.65.29.1 – 10.65.29.610.65.29.7
3410.65.29.8/2910.65.29.9 – 10.65.29.1410.65.29.15
3510.65.29.16/2910.65.29.17 – 10.65.29.2210.65.29.23
3610.65.29.24/2910.65.29.25 – 10.65.29.3010.65.29.31
3710.65.29.32/2910.65.29.33 – 10.65.29.3810.65.29.39
3810.65.29.40/2910.65.29.41 – 10.65.29.4610.65.29.47
3910.65.29.48/2910.65.29.49 – 10.65.29.5410.65.29.55
4010.65.29.56/2910.65.29.57 – 10.65.29.6210.65.29.63
4110.65.29.64/2910.65.29.65 – 10.65.29.7010.65.29.71
4210.65.29.72/2910.65.29.73 – 10.65.29.7810.65.29.79
4310.65.29.80/2910.65.29.81 – 10.65.29.8610.65.29.87
4410.65.29.88/2910.65.29.89 – 10.65.29.9410.65.29.95
4510.65.29.96/2910.65.29.97 – 10.65.29.10210.65.29.103
4610.65.29.104/2910.65.29.105 – 10.65.29.11010.65.29.111
4710.65.29.112/2910.65.29.113 – 10.65.29.11810.65.29.119
4810.65.29.120/2910.65.29.121 – 10.65.29.12610.65.29.127
4910.65.29.128/2910.65.29.129 – 10.65.29.13410.65.29.135
5010.65.29.136/2910.65.29.137 – 10.65.29.14210.65.29.143
5110.65.29.144/2910.65.29.145 – 10.65.29.15010.65.29.151
5210.65.29.152/2910.65.29.153 – 10.65.29.15810.65.29.159
5310.65.29.160/2910.65.29.161 – 10.65.29.16610.65.29.167
5410.65.29.168/2910.65.29.169 – 10.65.29.17410.65.29.175
5510.65.29.176/2910.65.29.177 – 10.65.29.18210.65.29.183
5610.65.29.184/2910.65.29.185 – 10.65.29.19010.65.29.191
5710.65.29.192/2910.65.29.193 – 10.65.29.19810.65.29.199
5810.65.29.200/2910.65.29.201 – 10.65.29.20610.65.29.207
5910.65.29.208/2910.65.29.209 – 10.65.29.21410.65.29.215
6010.65.29.216/2910.65.29.217 – 10.65.29.22210.65.29.223
6110.65.29.224/2910.65.29.225 – 10.65.29.23010.65.29.231
6210.65.29.232/2910.65.29.233 – 10.65.29.23810.65.29.239
6310.65.29.240/2910.65.29.241 – 10.65.29.24610.65.29.247
6410.65.29.248/2910.65.29.249 – 10.65.29.25410.65.29.255
6510.65.30.0/2910.65.30.1 – 10.65.30.610.65.30.7
6610.65.30.8/2910.65.30.9 – 10.65.30.1410.65.30.15
6710.65.30.16/2910.65.30.17 – 10.65.30.2210.65.30.23
6810.65.30.24/2910.65.30.25 – 10.65.30.3010.65.30.31
6910.65.30.32/2910.65.30.33 – 10.65.30.3810.65.30.39
7010.65.30.40/2910.65.30.41 – 10.65.30.4610.65.30.47
7110.65.30.48/2910.65.30.49 – 10.65.30.5410.65.30.55
7210.65.30.56/2910.65.30.57 – 10.65.30.6210.65.30.63
7310.65.30.64/2910.65.30.65 – 10.65.30.7010.65.30.71
7410.65.30.72/2910.65.30.73 – 10.65.30.7810.65.30.79
7510.65.30.80/2910.65.30.81 – 10.65.30.8610.65.30.87
7610.65.30.88/2910.65.30.89 – 10.65.30.9410.65.30.95
7710.65.30.96/2910.65.30.97 – 10.65.30.10210.65.30.103
7810.65.30.104/2910.65.30.105 – 10.65.30.11010.65.30.111
7910.65.30.112/2910.65.30.113 – 10.65.30.11810.65.30.119
8010.65.30.120/2910.65.30.121 – 10.65.30.12610.65.30.127
8110.65.30.128/2910.65.30.129 – 10.65.30.13410.65.30.135
8210.65.30.136/2910.65.30.137 – 10.65.30.14210.65.30.143
8310.65.30.144/2910.65.30.145 – 10.65.30.15010.65.30.151
8410.65.30.152/2910.65.30.153 – 10.65.30.15810.65.30.159
8510.65.30.160/2910.65.30.161 – 10.65.30.16610.65.30.167
8610.65.30.168/2910.65.30.169 – 10.65.30.17410.65.30.175
8710.65.30.176/2910.65.30.177 – 10.65.30.18210.65.30.183
8810.65.30.184/2910.65.30.185 – 10.65.30.19010.65.30.191
8910.65.30.192/2910.65.30.193 – 10.65.30.19810.65.30.199
9010.65.30.200/2910.65.30.201 – 10.65.30.20610.65.30.207
9110.65.30.208/2910.65.30.209 – 10.65.30.21410.65.30.215
9210.65.30.216/2910.65.30.217 – 10.65.30.22210.65.30.223
9310.65.30.224/2910.65.30.225 – 10.65.30.23010.65.30.231
9410.65.30.232/2910.65.30.233 – 10.65.30.23810.65.30.239
9510.65.30.240/2910.65.30.241 – 10.65.30.24610.65.30.247
9610.65.30.248/2910.65.30.249 – 10.65.30.25410.65.30.255
9710.65.31.0/2910.65.31.1 – 10.65.31.610.65.31.7
9810.65.31.8/2910.65.31.9 – 10.65.31.1410.65.31.15
9910.65.31.16/2910.65.31.17 – 10.65.31.2210.65.31.23
10010.65.31.24/2910.65.31.25 – 10.65.31.3010.65.31.31
10110.65.31.32/2910.65.31.33 – 10.65.31.3810.65.31.39
10210.65.31.40/2910.65.31.41 – 10.65.31.4610.65.31.47
10310.65.31.48/2910.65.31.49 – 10.65.31.5410.65.31.55
10410.65.31.56/2910.65.31.57 – 10.65.31.6210.65.31.63
10510.65.31.64/2910.65.31.65 – 10.65.31.7010.65.31.71
10610.65.31.72/2910.65.31.73 – 10.65.31.7810.65.31.79
10710.65.31.80/2910.65.31.81 – 10.65.31.8610.65.31.87
10810.65.31.88/2910.65.31.89 – 10.65.31.9410.65.31.95
10910.65.31.96/2910.65.31.97 – 10.65.31.10210.65.31.103
11010.65.31.104/2910.65.31.105 – 10.65.31.11010.65.31.111
11110.65.31.112/2910.65.31.113 – 10.65.31.11810.65.31.119
11210.65.31.120/2910.65.31.121 – 10.65.31.12610.65.31.127
11310.65.31.128/2910.65.31.129 – 10.65.31.13410.65.31.135
11410.65.31.136/2910.65.31.137 – 10.65.31.14210.65.31.143
11510.65.31.144/2910.65.31.145 – 10.65.31.15010.65.31.151
11610.65.31.152/2910.65.31.153 – 10.65.31.15810.65.31.159
11710.65.31.160/2910.65.31.161 – 10.65.31.16610.65.31.167
11810.65.31.168/2910.65.31.169 – 10.65.31.17410.65.31.175
11910.65.31.176/2910.65.31.177 – 10.65.31.18210.65.31.183
12010.65.31.184/2910.65.31.185 – 10.65.31.19010.65.31.191
12110.65.31.192/2910.65.31.193 – 10.65.31.19810.65.31.199
12210.65.31.200/2910.65.31.201 – 10.65.31.20610.65.31.207
12310.65.31.208/2910.65.31.209 – 10.65.31.21410.65.31.215
12410.65.31.216/2910.65.31.217 – 10.65.31.22210.65.31.223
12510.65.31.224/2910.65.31.225 – 10.65.31.23010.65.31.231
12610.65.31.232/2910.65.31.233 – 10.65.31.23810.65.31.239
12710.65.31.240/2910.65.31.241 – 10.65.31.24610.65.31.247
12810.65.31.248/2910.65.31.249 – 10.65.31.25410.65.31.255
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 →