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)10.45.236.0/22
network10.45.236.0/22
broadcast10.45.239.255
first host10.45.236.1
last host10.45.239.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.45.236.0/22
address00001010.00101101.11101100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00101101.11101100.00000000
broadcast00001010.00101101.11101111.11111111
green = network part, grey = host part
hex0x0a2dec00
decimal170781696
reverse dns0.236.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:ec00

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.45.236.0/2910.45.236.1 – 10.45.236.610.45.236.7
210.45.236.8/2910.45.236.9 – 10.45.236.1410.45.236.15
310.45.236.16/2910.45.236.17 – 10.45.236.2210.45.236.23
410.45.236.24/2910.45.236.25 – 10.45.236.3010.45.236.31
510.45.236.32/2910.45.236.33 – 10.45.236.3810.45.236.39
610.45.236.40/2910.45.236.41 – 10.45.236.4610.45.236.47
710.45.236.48/2910.45.236.49 – 10.45.236.5410.45.236.55
810.45.236.56/2910.45.236.57 – 10.45.236.6210.45.236.63
910.45.236.64/2910.45.236.65 – 10.45.236.7010.45.236.71
1010.45.236.72/2910.45.236.73 – 10.45.236.7810.45.236.79
1110.45.236.80/2910.45.236.81 – 10.45.236.8610.45.236.87
1210.45.236.88/2910.45.236.89 – 10.45.236.9410.45.236.95
1310.45.236.96/2910.45.236.97 – 10.45.236.10210.45.236.103
1410.45.236.104/2910.45.236.105 – 10.45.236.11010.45.236.111
1510.45.236.112/2910.45.236.113 – 10.45.236.11810.45.236.119
1610.45.236.120/2910.45.236.121 – 10.45.236.12610.45.236.127
1710.45.236.128/2910.45.236.129 – 10.45.236.13410.45.236.135
1810.45.236.136/2910.45.236.137 – 10.45.236.14210.45.236.143
1910.45.236.144/2910.45.236.145 – 10.45.236.15010.45.236.151
2010.45.236.152/2910.45.236.153 – 10.45.236.15810.45.236.159
2110.45.236.160/2910.45.236.161 – 10.45.236.16610.45.236.167
2210.45.236.168/2910.45.236.169 – 10.45.236.17410.45.236.175
2310.45.236.176/2910.45.236.177 – 10.45.236.18210.45.236.183
2410.45.236.184/2910.45.236.185 – 10.45.236.19010.45.236.191
2510.45.236.192/2910.45.236.193 – 10.45.236.19810.45.236.199
2610.45.236.200/2910.45.236.201 – 10.45.236.20610.45.236.207
2710.45.236.208/2910.45.236.209 – 10.45.236.21410.45.236.215
2810.45.236.216/2910.45.236.217 – 10.45.236.22210.45.236.223
2910.45.236.224/2910.45.236.225 – 10.45.236.23010.45.236.231
3010.45.236.232/2910.45.236.233 – 10.45.236.23810.45.236.239
3110.45.236.240/2910.45.236.241 – 10.45.236.24610.45.236.247
3210.45.236.248/2910.45.236.249 – 10.45.236.25410.45.236.255
3310.45.237.0/2910.45.237.1 – 10.45.237.610.45.237.7
3410.45.237.8/2910.45.237.9 – 10.45.237.1410.45.237.15
3510.45.237.16/2910.45.237.17 – 10.45.237.2210.45.237.23
3610.45.237.24/2910.45.237.25 – 10.45.237.3010.45.237.31
3710.45.237.32/2910.45.237.33 – 10.45.237.3810.45.237.39
3810.45.237.40/2910.45.237.41 – 10.45.237.4610.45.237.47
3910.45.237.48/2910.45.237.49 – 10.45.237.5410.45.237.55
4010.45.237.56/2910.45.237.57 – 10.45.237.6210.45.237.63
4110.45.237.64/2910.45.237.65 – 10.45.237.7010.45.237.71
4210.45.237.72/2910.45.237.73 – 10.45.237.7810.45.237.79
4310.45.237.80/2910.45.237.81 – 10.45.237.8610.45.237.87
4410.45.237.88/2910.45.237.89 – 10.45.237.9410.45.237.95
4510.45.237.96/2910.45.237.97 – 10.45.237.10210.45.237.103
4610.45.237.104/2910.45.237.105 – 10.45.237.11010.45.237.111
4710.45.237.112/2910.45.237.113 – 10.45.237.11810.45.237.119
4810.45.237.120/2910.45.237.121 – 10.45.237.12610.45.237.127
4910.45.237.128/2910.45.237.129 – 10.45.237.13410.45.237.135
5010.45.237.136/2910.45.237.137 – 10.45.237.14210.45.237.143
5110.45.237.144/2910.45.237.145 – 10.45.237.15010.45.237.151
5210.45.237.152/2910.45.237.153 – 10.45.237.15810.45.237.159
5310.45.237.160/2910.45.237.161 – 10.45.237.16610.45.237.167
5410.45.237.168/2910.45.237.169 – 10.45.237.17410.45.237.175
5510.45.237.176/2910.45.237.177 – 10.45.237.18210.45.237.183
5610.45.237.184/2910.45.237.185 – 10.45.237.19010.45.237.191
5710.45.237.192/2910.45.237.193 – 10.45.237.19810.45.237.199
5810.45.237.200/2910.45.237.201 – 10.45.237.20610.45.237.207
5910.45.237.208/2910.45.237.209 – 10.45.237.21410.45.237.215
6010.45.237.216/2910.45.237.217 – 10.45.237.22210.45.237.223
6110.45.237.224/2910.45.237.225 – 10.45.237.23010.45.237.231
6210.45.237.232/2910.45.237.233 – 10.45.237.23810.45.237.239
6310.45.237.240/2910.45.237.241 – 10.45.237.24610.45.237.247
6410.45.237.248/2910.45.237.249 – 10.45.237.25410.45.237.255
6510.45.238.0/2910.45.238.1 – 10.45.238.610.45.238.7
6610.45.238.8/2910.45.238.9 – 10.45.238.1410.45.238.15
6710.45.238.16/2910.45.238.17 – 10.45.238.2210.45.238.23
6810.45.238.24/2910.45.238.25 – 10.45.238.3010.45.238.31
6910.45.238.32/2910.45.238.33 – 10.45.238.3810.45.238.39
7010.45.238.40/2910.45.238.41 – 10.45.238.4610.45.238.47
7110.45.238.48/2910.45.238.49 – 10.45.238.5410.45.238.55
7210.45.238.56/2910.45.238.57 – 10.45.238.6210.45.238.63
7310.45.238.64/2910.45.238.65 – 10.45.238.7010.45.238.71
7410.45.238.72/2910.45.238.73 – 10.45.238.7810.45.238.79
7510.45.238.80/2910.45.238.81 – 10.45.238.8610.45.238.87
7610.45.238.88/2910.45.238.89 – 10.45.238.9410.45.238.95
7710.45.238.96/2910.45.238.97 – 10.45.238.10210.45.238.103
7810.45.238.104/2910.45.238.105 – 10.45.238.11010.45.238.111
7910.45.238.112/2910.45.238.113 – 10.45.238.11810.45.238.119
8010.45.238.120/2910.45.238.121 – 10.45.238.12610.45.238.127
8110.45.238.128/2910.45.238.129 – 10.45.238.13410.45.238.135
8210.45.238.136/2910.45.238.137 – 10.45.238.14210.45.238.143
8310.45.238.144/2910.45.238.145 – 10.45.238.15010.45.238.151
8410.45.238.152/2910.45.238.153 – 10.45.238.15810.45.238.159
8510.45.238.160/2910.45.238.161 – 10.45.238.16610.45.238.167
8610.45.238.168/2910.45.238.169 – 10.45.238.17410.45.238.175
8710.45.238.176/2910.45.238.177 – 10.45.238.18210.45.238.183
8810.45.238.184/2910.45.238.185 – 10.45.238.19010.45.238.191
8910.45.238.192/2910.45.238.193 – 10.45.238.19810.45.238.199
9010.45.238.200/2910.45.238.201 – 10.45.238.20610.45.238.207
9110.45.238.208/2910.45.238.209 – 10.45.238.21410.45.238.215
9210.45.238.216/2910.45.238.217 – 10.45.238.22210.45.238.223
9310.45.238.224/2910.45.238.225 – 10.45.238.23010.45.238.231
9410.45.238.232/2910.45.238.233 – 10.45.238.23810.45.238.239
9510.45.238.240/2910.45.238.241 – 10.45.238.24610.45.238.247
9610.45.238.248/2910.45.238.249 – 10.45.238.25410.45.238.255
9710.45.239.0/2910.45.239.1 – 10.45.239.610.45.239.7
9810.45.239.8/2910.45.239.9 – 10.45.239.1410.45.239.15
9910.45.239.16/2910.45.239.17 – 10.45.239.2210.45.239.23
10010.45.239.24/2910.45.239.25 – 10.45.239.3010.45.239.31
10110.45.239.32/2910.45.239.33 – 10.45.239.3810.45.239.39
10210.45.239.40/2910.45.239.41 – 10.45.239.4610.45.239.47
10310.45.239.48/2910.45.239.49 – 10.45.239.5410.45.239.55
10410.45.239.56/2910.45.239.57 – 10.45.239.6210.45.239.63
10510.45.239.64/2910.45.239.65 – 10.45.239.7010.45.239.71
10610.45.239.72/2910.45.239.73 – 10.45.239.7810.45.239.79
10710.45.239.80/2910.45.239.81 – 10.45.239.8610.45.239.87
10810.45.239.88/2910.45.239.89 – 10.45.239.9410.45.239.95
10910.45.239.96/2910.45.239.97 – 10.45.239.10210.45.239.103
11010.45.239.104/2910.45.239.105 – 10.45.239.11010.45.239.111
11110.45.239.112/2910.45.239.113 – 10.45.239.11810.45.239.119
11210.45.239.120/2910.45.239.121 – 10.45.239.12610.45.239.127
11310.45.239.128/2910.45.239.129 – 10.45.239.13410.45.239.135
11410.45.239.136/2910.45.239.137 – 10.45.239.14210.45.239.143
11510.45.239.144/2910.45.239.145 – 10.45.239.15010.45.239.151
11610.45.239.152/2910.45.239.153 – 10.45.239.15810.45.239.159
11710.45.239.160/2910.45.239.161 – 10.45.239.16610.45.239.167
11810.45.239.168/2910.45.239.169 – 10.45.239.17410.45.239.175
11910.45.239.176/2910.45.239.177 – 10.45.239.18210.45.239.183
12010.45.239.184/2910.45.239.185 – 10.45.239.19010.45.239.191
12110.45.239.192/2910.45.239.193 – 10.45.239.19810.45.239.199
12210.45.239.200/2910.45.239.201 – 10.45.239.20610.45.239.207
12310.45.239.208/2910.45.239.209 – 10.45.239.21410.45.239.215
12410.45.239.216/2910.45.239.217 – 10.45.239.22210.45.239.223
12510.45.239.224/2910.45.239.225 – 10.45.239.23010.45.239.231
12610.45.239.232/2910.45.239.233 – 10.45.239.23810.45.239.239
12710.45.239.240/2910.45.239.241 – 10.45.239.24610.45.239.247
12810.45.239.248/2910.45.239.249 – 10.45.239.25410.45.239.255
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 →