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)10.45.64.0/22
network10.45.64.0/22
broadcast10.45.67.255
first host10.45.64.1
last host10.45.67.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.45.64.0/22
address00001010.00101101.01000000.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00101101.01000000.00000000
broadcast00001010.00101101.01000011.11111111
green = network part, grey = host part
hex0x0a2d4000
decimal170737664
reverse dns0.64.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:4000

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.45.64.0/2910.45.64.1 – 10.45.64.610.45.64.7
210.45.64.8/2910.45.64.9 – 10.45.64.1410.45.64.15
310.45.64.16/2910.45.64.17 – 10.45.64.2210.45.64.23
410.45.64.24/2910.45.64.25 – 10.45.64.3010.45.64.31
510.45.64.32/2910.45.64.33 – 10.45.64.3810.45.64.39
610.45.64.40/2910.45.64.41 – 10.45.64.4610.45.64.47
710.45.64.48/2910.45.64.49 – 10.45.64.5410.45.64.55
810.45.64.56/2910.45.64.57 – 10.45.64.6210.45.64.63
910.45.64.64/2910.45.64.65 – 10.45.64.7010.45.64.71
1010.45.64.72/2910.45.64.73 – 10.45.64.7810.45.64.79
1110.45.64.80/2910.45.64.81 – 10.45.64.8610.45.64.87
1210.45.64.88/2910.45.64.89 – 10.45.64.9410.45.64.95
1310.45.64.96/2910.45.64.97 – 10.45.64.10210.45.64.103
1410.45.64.104/2910.45.64.105 – 10.45.64.11010.45.64.111
1510.45.64.112/2910.45.64.113 – 10.45.64.11810.45.64.119
1610.45.64.120/2910.45.64.121 – 10.45.64.12610.45.64.127
1710.45.64.128/2910.45.64.129 – 10.45.64.13410.45.64.135
1810.45.64.136/2910.45.64.137 – 10.45.64.14210.45.64.143
1910.45.64.144/2910.45.64.145 – 10.45.64.15010.45.64.151
2010.45.64.152/2910.45.64.153 – 10.45.64.15810.45.64.159
2110.45.64.160/2910.45.64.161 – 10.45.64.16610.45.64.167
2210.45.64.168/2910.45.64.169 – 10.45.64.17410.45.64.175
2310.45.64.176/2910.45.64.177 – 10.45.64.18210.45.64.183
2410.45.64.184/2910.45.64.185 – 10.45.64.19010.45.64.191
2510.45.64.192/2910.45.64.193 – 10.45.64.19810.45.64.199
2610.45.64.200/2910.45.64.201 – 10.45.64.20610.45.64.207
2710.45.64.208/2910.45.64.209 – 10.45.64.21410.45.64.215
2810.45.64.216/2910.45.64.217 – 10.45.64.22210.45.64.223
2910.45.64.224/2910.45.64.225 – 10.45.64.23010.45.64.231
3010.45.64.232/2910.45.64.233 – 10.45.64.23810.45.64.239
3110.45.64.240/2910.45.64.241 – 10.45.64.24610.45.64.247
3210.45.64.248/2910.45.64.249 – 10.45.64.25410.45.64.255
3310.45.65.0/2910.45.65.1 – 10.45.65.610.45.65.7
3410.45.65.8/2910.45.65.9 – 10.45.65.1410.45.65.15
3510.45.65.16/2910.45.65.17 – 10.45.65.2210.45.65.23
3610.45.65.24/2910.45.65.25 – 10.45.65.3010.45.65.31
3710.45.65.32/2910.45.65.33 – 10.45.65.3810.45.65.39
3810.45.65.40/2910.45.65.41 – 10.45.65.4610.45.65.47
3910.45.65.48/2910.45.65.49 – 10.45.65.5410.45.65.55
4010.45.65.56/2910.45.65.57 – 10.45.65.6210.45.65.63
4110.45.65.64/2910.45.65.65 – 10.45.65.7010.45.65.71
4210.45.65.72/2910.45.65.73 – 10.45.65.7810.45.65.79
4310.45.65.80/2910.45.65.81 – 10.45.65.8610.45.65.87
4410.45.65.88/2910.45.65.89 – 10.45.65.9410.45.65.95
4510.45.65.96/2910.45.65.97 – 10.45.65.10210.45.65.103
4610.45.65.104/2910.45.65.105 – 10.45.65.11010.45.65.111
4710.45.65.112/2910.45.65.113 – 10.45.65.11810.45.65.119
4810.45.65.120/2910.45.65.121 – 10.45.65.12610.45.65.127
4910.45.65.128/2910.45.65.129 – 10.45.65.13410.45.65.135
5010.45.65.136/2910.45.65.137 – 10.45.65.14210.45.65.143
5110.45.65.144/2910.45.65.145 – 10.45.65.15010.45.65.151
5210.45.65.152/2910.45.65.153 – 10.45.65.15810.45.65.159
5310.45.65.160/2910.45.65.161 – 10.45.65.16610.45.65.167
5410.45.65.168/2910.45.65.169 – 10.45.65.17410.45.65.175
5510.45.65.176/2910.45.65.177 – 10.45.65.18210.45.65.183
5610.45.65.184/2910.45.65.185 – 10.45.65.19010.45.65.191
5710.45.65.192/2910.45.65.193 – 10.45.65.19810.45.65.199
5810.45.65.200/2910.45.65.201 – 10.45.65.20610.45.65.207
5910.45.65.208/2910.45.65.209 – 10.45.65.21410.45.65.215
6010.45.65.216/2910.45.65.217 – 10.45.65.22210.45.65.223
6110.45.65.224/2910.45.65.225 – 10.45.65.23010.45.65.231
6210.45.65.232/2910.45.65.233 – 10.45.65.23810.45.65.239
6310.45.65.240/2910.45.65.241 – 10.45.65.24610.45.65.247
6410.45.65.248/2910.45.65.249 – 10.45.65.25410.45.65.255
6510.45.66.0/2910.45.66.1 – 10.45.66.610.45.66.7
6610.45.66.8/2910.45.66.9 – 10.45.66.1410.45.66.15
6710.45.66.16/2910.45.66.17 – 10.45.66.2210.45.66.23
6810.45.66.24/2910.45.66.25 – 10.45.66.3010.45.66.31
6910.45.66.32/2910.45.66.33 – 10.45.66.3810.45.66.39
7010.45.66.40/2910.45.66.41 – 10.45.66.4610.45.66.47
7110.45.66.48/2910.45.66.49 – 10.45.66.5410.45.66.55
7210.45.66.56/2910.45.66.57 – 10.45.66.6210.45.66.63
7310.45.66.64/2910.45.66.65 – 10.45.66.7010.45.66.71
7410.45.66.72/2910.45.66.73 – 10.45.66.7810.45.66.79
7510.45.66.80/2910.45.66.81 – 10.45.66.8610.45.66.87
7610.45.66.88/2910.45.66.89 – 10.45.66.9410.45.66.95
7710.45.66.96/2910.45.66.97 – 10.45.66.10210.45.66.103
7810.45.66.104/2910.45.66.105 – 10.45.66.11010.45.66.111
7910.45.66.112/2910.45.66.113 – 10.45.66.11810.45.66.119
8010.45.66.120/2910.45.66.121 – 10.45.66.12610.45.66.127
8110.45.66.128/2910.45.66.129 – 10.45.66.13410.45.66.135
8210.45.66.136/2910.45.66.137 – 10.45.66.14210.45.66.143
8310.45.66.144/2910.45.66.145 – 10.45.66.15010.45.66.151
8410.45.66.152/2910.45.66.153 – 10.45.66.15810.45.66.159
8510.45.66.160/2910.45.66.161 – 10.45.66.16610.45.66.167
8610.45.66.168/2910.45.66.169 – 10.45.66.17410.45.66.175
8710.45.66.176/2910.45.66.177 – 10.45.66.18210.45.66.183
8810.45.66.184/2910.45.66.185 – 10.45.66.19010.45.66.191
8910.45.66.192/2910.45.66.193 – 10.45.66.19810.45.66.199
9010.45.66.200/2910.45.66.201 – 10.45.66.20610.45.66.207
9110.45.66.208/2910.45.66.209 – 10.45.66.21410.45.66.215
9210.45.66.216/2910.45.66.217 – 10.45.66.22210.45.66.223
9310.45.66.224/2910.45.66.225 – 10.45.66.23010.45.66.231
9410.45.66.232/2910.45.66.233 – 10.45.66.23810.45.66.239
9510.45.66.240/2910.45.66.241 – 10.45.66.24610.45.66.247
9610.45.66.248/2910.45.66.249 – 10.45.66.25410.45.66.255
9710.45.67.0/2910.45.67.1 – 10.45.67.610.45.67.7
9810.45.67.8/2910.45.67.9 – 10.45.67.1410.45.67.15
9910.45.67.16/2910.45.67.17 – 10.45.67.2210.45.67.23
10010.45.67.24/2910.45.67.25 – 10.45.67.3010.45.67.31
10110.45.67.32/2910.45.67.33 – 10.45.67.3810.45.67.39
10210.45.67.40/2910.45.67.41 – 10.45.67.4610.45.67.47
10310.45.67.48/2910.45.67.49 – 10.45.67.5410.45.67.55
10410.45.67.56/2910.45.67.57 – 10.45.67.6210.45.67.63
10510.45.67.64/2910.45.67.65 – 10.45.67.7010.45.67.71
10610.45.67.72/2910.45.67.73 – 10.45.67.7810.45.67.79
10710.45.67.80/2910.45.67.81 – 10.45.67.8610.45.67.87
10810.45.67.88/2910.45.67.89 – 10.45.67.9410.45.67.95
10910.45.67.96/2910.45.67.97 – 10.45.67.10210.45.67.103
11010.45.67.104/2910.45.67.105 – 10.45.67.11010.45.67.111
11110.45.67.112/2910.45.67.113 – 10.45.67.11810.45.67.119
11210.45.67.120/2910.45.67.121 – 10.45.67.12610.45.67.127
11310.45.67.128/2910.45.67.129 – 10.45.67.13410.45.67.135
11410.45.67.136/2910.45.67.137 – 10.45.67.14210.45.67.143
11510.45.67.144/2910.45.67.145 – 10.45.67.15010.45.67.151
11610.45.67.152/2910.45.67.153 – 10.45.67.15810.45.67.159
11710.45.67.160/2910.45.67.161 – 10.45.67.16610.45.67.167
11810.45.67.168/2910.45.67.169 – 10.45.67.17410.45.67.175
11910.45.67.176/2910.45.67.177 – 10.45.67.18210.45.67.183
12010.45.67.184/2910.45.67.185 – 10.45.67.19010.45.67.191
12110.45.67.192/2910.45.67.193 – 10.45.67.19810.45.67.199
12210.45.67.200/2910.45.67.201 – 10.45.67.20610.45.67.207
12310.45.67.208/2910.45.67.209 – 10.45.67.21410.45.67.215
12410.45.67.216/2910.45.67.217 – 10.45.67.22210.45.67.223
12510.45.67.224/2910.45.67.225 – 10.45.67.23010.45.67.231
12610.45.67.232/2910.45.67.233 – 10.45.67.23810.45.67.239
12710.45.67.240/2910.45.67.241 – 10.45.67.24610.45.67.247
12810.45.67.248/2910.45.67.249 – 10.45.67.25410.45.67.255
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 →