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)10.45.40.0/22
network10.45.40.0/22
broadcast10.45.43.255
first host10.45.40.1
last host10.45.43.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.45.40.0/22
address00001010.00101101.00101000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00101101.00101000.00000000
broadcast00001010.00101101.00101011.11111111
green = network part, grey = host part
hex0x0a2d2800
decimal170731520
reverse dns0.40.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:2800

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.45.40.0/2910.45.40.1 – 10.45.40.610.45.40.7
210.45.40.8/2910.45.40.9 – 10.45.40.1410.45.40.15
310.45.40.16/2910.45.40.17 – 10.45.40.2210.45.40.23
410.45.40.24/2910.45.40.25 – 10.45.40.3010.45.40.31
510.45.40.32/2910.45.40.33 – 10.45.40.3810.45.40.39
610.45.40.40/2910.45.40.41 – 10.45.40.4610.45.40.47
710.45.40.48/2910.45.40.49 – 10.45.40.5410.45.40.55
810.45.40.56/2910.45.40.57 – 10.45.40.6210.45.40.63
910.45.40.64/2910.45.40.65 – 10.45.40.7010.45.40.71
1010.45.40.72/2910.45.40.73 – 10.45.40.7810.45.40.79
1110.45.40.80/2910.45.40.81 – 10.45.40.8610.45.40.87
1210.45.40.88/2910.45.40.89 – 10.45.40.9410.45.40.95
1310.45.40.96/2910.45.40.97 – 10.45.40.10210.45.40.103
1410.45.40.104/2910.45.40.105 – 10.45.40.11010.45.40.111
1510.45.40.112/2910.45.40.113 – 10.45.40.11810.45.40.119
1610.45.40.120/2910.45.40.121 – 10.45.40.12610.45.40.127
1710.45.40.128/2910.45.40.129 – 10.45.40.13410.45.40.135
1810.45.40.136/2910.45.40.137 – 10.45.40.14210.45.40.143
1910.45.40.144/2910.45.40.145 – 10.45.40.15010.45.40.151
2010.45.40.152/2910.45.40.153 – 10.45.40.15810.45.40.159
2110.45.40.160/2910.45.40.161 – 10.45.40.16610.45.40.167
2210.45.40.168/2910.45.40.169 – 10.45.40.17410.45.40.175
2310.45.40.176/2910.45.40.177 – 10.45.40.18210.45.40.183
2410.45.40.184/2910.45.40.185 – 10.45.40.19010.45.40.191
2510.45.40.192/2910.45.40.193 – 10.45.40.19810.45.40.199
2610.45.40.200/2910.45.40.201 – 10.45.40.20610.45.40.207
2710.45.40.208/2910.45.40.209 – 10.45.40.21410.45.40.215
2810.45.40.216/2910.45.40.217 – 10.45.40.22210.45.40.223
2910.45.40.224/2910.45.40.225 – 10.45.40.23010.45.40.231
3010.45.40.232/2910.45.40.233 – 10.45.40.23810.45.40.239
3110.45.40.240/2910.45.40.241 – 10.45.40.24610.45.40.247
3210.45.40.248/2910.45.40.249 – 10.45.40.25410.45.40.255
3310.45.41.0/2910.45.41.1 – 10.45.41.610.45.41.7
3410.45.41.8/2910.45.41.9 – 10.45.41.1410.45.41.15
3510.45.41.16/2910.45.41.17 – 10.45.41.2210.45.41.23
3610.45.41.24/2910.45.41.25 – 10.45.41.3010.45.41.31
3710.45.41.32/2910.45.41.33 – 10.45.41.3810.45.41.39
3810.45.41.40/2910.45.41.41 – 10.45.41.4610.45.41.47
3910.45.41.48/2910.45.41.49 – 10.45.41.5410.45.41.55
4010.45.41.56/2910.45.41.57 – 10.45.41.6210.45.41.63
4110.45.41.64/2910.45.41.65 – 10.45.41.7010.45.41.71
4210.45.41.72/2910.45.41.73 – 10.45.41.7810.45.41.79
4310.45.41.80/2910.45.41.81 – 10.45.41.8610.45.41.87
4410.45.41.88/2910.45.41.89 – 10.45.41.9410.45.41.95
4510.45.41.96/2910.45.41.97 – 10.45.41.10210.45.41.103
4610.45.41.104/2910.45.41.105 – 10.45.41.11010.45.41.111
4710.45.41.112/2910.45.41.113 – 10.45.41.11810.45.41.119
4810.45.41.120/2910.45.41.121 – 10.45.41.12610.45.41.127
4910.45.41.128/2910.45.41.129 – 10.45.41.13410.45.41.135
5010.45.41.136/2910.45.41.137 – 10.45.41.14210.45.41.143
5110.45.41.144/2910.45.41.145 – 10.45.41.15010.45.41.151
5210.45.41.152/2910.45.41.153 – 10.45.41.15810.45.41.159
5310.45.41.160/2910.45.41.161 – 10.45.41.16610.45.41.167
5410.45.41.168/2910.45.41.169 – 10.45.41.17410.45.41.175
5510.45.41.176/2910.45.41.177 – 10.45.41.18210.45.41.183
5610.45.41.184/2910.45.41.185 – 10.45.41.19010.45.41.191
5710.45.41.192/2910.45.41.193 – 10.45.41.19810.45.41.199
5810.45.41.200/2910.45.41.201 – 10.45.41.20610.45.41.207
5910.45.41.208/2910.45.41.209 – 10.45.41.21410.45.41.215
6010.45.41.216/2910.45.41.217 – 10.45.41.22210.45.41.223
6110.45.41.224/2910.45.41.225 – 10.45.41.23010.45.41.231
6210.45.41.232/2910.45.41.233 – 10.45.41.23810.45.41.239
6310.45.41.240/2910.45.41.241 – 10.45.41.24610.45.41.247
6410.45.41.248/2910.45.41.249 – 10.45.41.25410.45.41.255
6510.45.42.0/2910.45.42.1 – 10.45.42.610.45.42.7
6610.45.42.8/2910.45.42.9 – 10.45.42.1410.45.42.15
6710.45.42.16/2910.45.42.17 – 10.45.42.2210.45.42.23
6810.45.42.24/2910.45.42.25 – 10.45.42.3010.45.42.31
6910.45.42.32/2910.45.42.33 – 10.45.42.3810.45.42.39
7010.45.42.40/2910.45.42.41 – 10.45.42.4610.45.42.47
7110.45.42.48/2910.45.42.49 – 10.45.42.5410.45.42.55
7210.45.42.56/2910.45.42.57 – 10.45.42.6210.45.42.63
7310.45.42.64/2910.45.42.65 – 10.45.42.7010.45.42.71
7410.45.42.72/2910.45.42.73 – 10.45.42.7810.45.42.79
7510.45.42.80/2910.45.42.81 – 10.45.42.8610.45.42.87
7610.45.42.88/2910.45.42.89 – 10.45.42.9410.45.42.95
7710.45.42.96/2910.45.42.97 – 10.45.42.10210.45.42.103
7810.45.42.104/2910.45.42.105 – 10.45.42.11010.45.42.111
7910.45.42.112/2910.45.42.113 – 10.45.42.11810.45.42.119
8010.45.42.120/2910.45.42.121 – 10.45.42.12610.45.42.127
8110.45.42.128/2910.45.42.129 – 10.45.42.13410.45.42.135
8210.45.42.136/2910.45.42.137 – 10.45.42.14210.45.42.143
8310.45.42.144/2910.45.42.145 – 10.45.42.15010.45.42.151
8410.45.42.152/2910.45.42.153 – 10.45.42.15810.45.42.159
8510.45.42.160/2910.45.42.161 – 10.45.42.16610.45.42.167
8610.45.42.168/2910.45.42.169 – 10.45.42.17410.45.42.175
8710.45.42.176/2910.45.42.177 – 10.45.42.18210.45.42.183
8810.45.42.184/2910.45.42.185 – 10.45.42.19010.45.42.191
8910.45.42.192/2910.45.42.193 – 10.45.42.19810.45.42.199
9010.45.42.200/2910.45.42.201 – 10.45.42.20610.45.42.207
9110.45.42.208/2910.45.42.209 – 10.45.42.21410.45.42.215
9210.45.42.216/2910.45.42.217 – 10.45.42.22210.45.42.223
9310.45.42.224/2910.45.42.225 – 10.45.42.23010.45.42.231
9410.45.42.232/2910.45.42.233 – 10.45.42.23810.45.42.239
9510.45.42.240/2910.45.42.241 – 10.45.42.24610.45.42.247
9610.45.42.248/2910.45.42.249 – 10.45.42.25410.45.42.255
9710.45.43.0/2910.45.43.1 – 10.45.43.610.45.43.7
9810.45.43.8/2910.45.43.9 – 10.45.43.1410.45.43.15
9910.45.43.16/2910.45.43.17 – 10.45.43.2210.45.43.23
10010.45.43.24/2910.45.43.25 – 10.45.43.3010.45.43.31
10110.45.43.32/2910.45.43.33 – 10.45.43.3810.45.43.39
10210.45.43.40/2910.45.43.41 – 10.45.43.4610.45.43.47
10310.45.43.48/2910.45.43.49 – 10.45.43.5410.45.43.55
10410.45.43.56/2910.45.43.57 – 10.45.43.6210.45.43.63
10510.45.43.64/2910.45.43.65 – 10.45.43.7010.45.43.71
10610.45.43.72/2910.45.43.73 – 10.45.43.7810.45.43.79
10710.45.43.80/2910.45.43.81 – 10.45.43.8610.45.43.87
10810.45.43.88/2910.45.43.89 – 10.45.43.9410.45.43.95
10910.45.43.96/2910.45.43.97 – 10.45.43.10210.45.43.103
11010.45.43.104/2910.45.43.105 – 10.45.43.11010.45.43.111
11110.45.43.112/2910.45.43.113 – 10.45.43.11810.45.43.119
11210.45.43.120/2910.45.43.121 – 10.45.43.12610.45.43.127
11310.45.43.128/2910.45.43.129 – 10.45.43.13410.45.43.135
11410.45.43.136/2910.45.43.137 – 10.45.43.14210.45.43.143
11510.45.43.144/2910.45.43.145 – 10.45.43.15010.45.43.151
11610.45.43.152/2910.45.43.153 – 10.45.43.15810.45.43.159
11710.45.43.160/2910.45.43.161 – 10.45.43.16610.45.43.167
11810.45.43.168/2910.45.43.169 – 10.45.43.17410.45.43.175
11910.45.43.176/2910.45.43.177 – 10.45.43.18210.45.43.183
12010.45.43.184/2910.45.43.185 – 10.45.43.19010.45.43.191
12110.45.43.192/2910.45.43.193 – 10.45.43.19810.45.43.199
12210.45.43.200/2910.45.43.201 – 10.45.43.20610.45.43.207
12310.45.43.208/2910.45.43.209 – 10.45.43.21410.45.43.215
12410.45.43.216/2910.45.43.217 – 10.45.43.22210.45.43.223
12510.45.43.224/2910.45.43.225 – 10.45.43.23010.45.43.231
12610.45.43.232/2910.45.43.233 – 10.45.43.23810.45.43.239
12710.45.43.240/2910.45.43.241 – 10.45.43.24610.45.43.247
12810.45.43.248/2910.45.43.249 – 10.45.43.25410.45.43.255
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 →