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)10.45.252.0/22
network10.45.252.0/22
broadcast10.45.255.255
first host10.45.252.1
last host10.45.255.254
subnet mask255.255.252.0
wildcard0.0.3.255
addresses1,024
usable hosts1,022
classA
ipcalc 10.45.252.0/22
address00001010.00101101.11111100.00000000
subnet mask11111111.11111111.11111100.00000000
network00001010.00101101.11111100.00000000
broadcast00001010.00101101.11111111.11111111
green = network part, grey = host part
hex0x0a2dfc00
decimal170785792
reverse dns0.252.45.10.in-addr.arpa
ipv4-mapped::ffff:a2d:fc00

/22 split into /29 · 128 subnets

close ×
#networkhost rangebroadcast
110.45.252.0/2910.45.252.1 – 10.45.252.610.45.252.7
210.45.252.8/2910.45.252.9 – 10.45.252.1410.45.252.15
310.45.252.16/2910.45.252.17 – 10.45.252.2210.45.252.23
410.45.252.24/2910.45.252.25 – 10.45.252.3010.45.252.31
510.45.252.32/2910.45.252.33 – 10.45.252.3810.45.252.39
610.45.252.40/2910.45.252.41 – 10.45.252.4610.45.252.47
710.45.252.48/2910.45.252.49 – 10.45.252.5410.45.252.55
810.45.252.56/2910.45.252.57 – 10.45.252.6210.45.252.63
910.45.252.64/2910.45.252.65 – 10.45.252.7010.45.252.71
1010.45.252.72/2910.45.252.73 – 10.45.252.7810.45.252.79
1110.45.252.80/2910.45.252.81 – 10.45.252.8610.45.252.87
1210.45.252.88/2910.45.252.89 – 10.45.252.9410.45.252.95
1310.45.252.96/2910.45.252.97 – 10.45.252.10210.45.252.103
1410.45.252.104/2910.45.252.105 – 10.45.252.11010.45.252.111
1510.45.252.112/2910.45.252.113 – 10.45.252.11810.45.252.119
1610.45.252.120/2910.45.252.121 – 10.45.252.12610.45.252.127
1710.45.252.128/2910.45.252.129 – 10.45.252.13410.45.252.135
1810.45.252.136/2910.45.252.137 – 10.45.252.14210.45.252.143
1910.45.252.144/2910.45.252.145 – 10.45.252.15010.45.252.151
2010.45.252.152/2910.45.252.153 – 10.45.252.15810.45.252.159
2110.45.252.160/2910.45.252.161 – 10.45.252.16610.45.252.167
2210.45.252.168/2910.45.252.169 – 10.45.252.17410.45.252.175
2310.45.252.176/2910.45.252.177 – 10.45.252.18210.45.252.183
2410.45.252.184/2910.45.252.185 – 10.45.252.19010.45.252.191
2510.45.252.192/2910.45.252.193 – 10.45.252.19810.45.252.199
2610.45.252.200/2910.45.252.201 – 10.45.252.20610.45.252.207
2710.45.252.208/2910.45.252.209 – 10.45.252.21410.45.252.215
2810.45.252.216/2910.45.252.217 – 10.45.252.22210.45.252.223
2910.45.252.224/2910.45.252.225 – 10.45.252.23010.45.252.231
3010.45.252.232/2910.45.252.233 – 10.45.252.23810.45.252.239
3110.45.252.240/2910.45.252.241 – 10.45.252.24610.45.252.247
3210.45.252.248/2910.45.252.249 – 10.45.252.25410.45.252.255
3310.45.253.0/2910.45.253.1 – 10.45.253.610.45.253.7
3410.45.253.8/2910.45.253.9 – 10.45.253.1410.45.253.15
3510.45.253.16/2910.45.253.17 – 10.45.253.2210.45.253.23
3610.45.253.24/2910.45.253.25 – 10.45.253.3010.45.253.31
3710.45.253.32/2910.45.253.33 – 10.45.253.3810.45.253.39
3810.45.253.40/2910.45.253.41 – 10.45.253.4610.45.253.47
3910.45.253.48/2910.45.253.49 – 10.45.253.5410.45.253.55
4010.45.253.56/2910.45.253.57 – 10.45.253.6210.45.253.63
4110.45.253.64/2910.45.253.65 – 10.45.253.7010.45.253.71
4210.45.253.72/2910.45.253.73 – 10.45.253.7810.45.253.79
4310.45.253.80/2910.45.253.81 – 10.45.253.8610.45.253.87
4410.45.253.88/2910.45.253.89 – 10.45.253.9410.45.253.95
4510.45.253.96/2910.45.253.97 – 10.45.253.10210.45.253.103
4610.45.253.104/2910.45.253.105 – 10.45.253.11010.45.253.111
4710.45.253.112/2910.45.253.113 – 10.45.253.11810.45.253.119
4810.45.253.120/2910.45.253.121 – 10.45.253.12610.45.253.127
4910.45.253.128/2910.45.253.129 – 10.45.253.13410.45.253.135
5010.45.253.136/2910.45.253.137 – 10.45.253.14210.45.253.143
5110.45.253.144/2910.45.253.145 – 10.45.253.15010.45.253.151
5210.45.253.152/2910.45.253.153 – 10.45.253.15810.45.253.159
5310.45.253.160/2910.45.253.161 – 10.45.253.16610.45.253.167
5410.45.253.168/2910.45.253.169 – 10.45.253.17410.45.253.175
5510.45.253.176/2910.45.253.177 – 10.45.253.18210.45.253.183
5610.45.253.184/2910.45.253.185 – 10.45.253.19010.45.253.191
5710.45.253.192/2910.45.253.193 – 10.45.253.19810.45.253.199
5810.45.253.200/2910.45.253.201 – 10.45.253.20610.45.253.207
5910.45.253.208/2910.45.253.209 – 10.45.253.21410.45.253.215
6010.45.253.216/2910.45.253.217 – 10.45.253.22210.45.253.223
6110.45.253.224/2910.45.253.225 – 10.45.253.23010.45.253.231
6210.45.253.232/2910.45.253.233 – 10.45.253.23810.45.253.239
6310.45.253.240/2910.45.253.241 – 10.45.253.24610.45.253.247
6410.45.253.248/2910.45.253.249 – 10.45.253.25410.45.253.255
6510.45.254.0/2910.45.254.1 – 10.45.254.610.45.254.7
6610.45.254.8/2910.45.254.9 – 10.45.254.1410.45.254.15
6710.45.254.16/2910.45.254.17 – 10.45.254.2210.45.254.23
6810.45.254.24/2910.45.254.25 – 10.45.254.3010.45.254.31
6910.45.254.32/2910.45.254.33 – 10.45.254.3810.45.254.39
7010.45.254.40/2910.45.254.41 – 10.45.254.4610.45.254.47
7110.45.254.48/2910.45.254.49 – 10.45.254.5410.45.254.55
7210.45.254.56/2910.45.254.57 – 10.45.254.6210.45.254.63
7310.45.254.64/2910.45.254.65 – 10.45.254.7010.45.254.71
7410.45.254.72/2910.45.254.73 – 10.45.254.7810.45.254.79
7510.45.254.80/2910.45.254.81 – 10.45.254.8610.45.254.87
7610.45.254.88/2910.45.254.89 – 10.45.254.9410.45.254.95
7710.45.254.96/2910.45.254.97 – 10.45.254.10210.45.254.103
7810.45.254.104/2910.45.254.105 – 10.45.254.11010.45.254.111
7910.45.254.112/2910.45.254.113 – 10.45.254.11810.45.254.119
8010.45.254.120/2910.45.254.121 – 10.45.254.12610.45.254.127
8110.45.254.128/2910.45.254.129 – 10.45.254.13410.45.254.135
8210.45.254.136/2910.45.254.137 – 10.45.254.14210.45.254.143
8310.45.254.144/2910.45.254.145 – 10.45.254.15010.45.254.151
8410.45.254.152/2910.45.254.153 – 10.45.254.15810.45.254.159
8510.45.254.160/2910.45.254.161 – 10.45.254.16610.45.254.167
8610.45.254.168/2910.45.254.169 – 10.45.254.17410.45.254.175
8710.45.254.176/2910.45.254.177 – 10.45.254.18210.45.254.183
8810.45.254.184/2910.45.254.185 – 10.45.254.19010.45.254.191
8910.45.254.192/2910.45.254.193 – 10.45.254.19810.45.254.199
9010.45.254.200/2910.45.254.201 – 10.45.254.20610.45.254.207
9110.45.254.208/2910.45.254.209 – 10.45.254.21410.45.254.215
9210.45.254.216/2910.45.254.217 – 10.45.254.22210.45.254.223
9310.45.254.224/2910.45.254.225 – 10.45.254.23010.45.254.231
9410.45.254.232/2910.45.254.233 – 10.45.254.23810.45.254.239
9510.45.254.240/2910.45.254.241 – 10.45.254.24610.45.254.247
9610.45.254.248/2910.45.254.249 – 10.45.254.25410.45.254.255
9710.45.255.0/2910.45.255.1 – 10.45.255.610.45.255.7
9810.45.255.8/2910.45.255.9 – 10.45.255.1410.45.255.15
9910.45.255.16/2910.45.255.17 – 10.45.255.2210.45.255.23
10010.45.255.24/2910.45.255.25 – 10.45.255.3010.45.255.31
10110.45.255.32/2910.45.255.33 – 10.45.255.3810.45.255.39
10210.45.255.40/2910.45.255.41 – 10.45.255.4610.45.255.47
10310.45.255.48/2910.45.255.49 – 10.45.255.5410.45.255.55
10410.45.255.56/2910.45.255.57 – 10.45.255.6210.45.255.63
10510.45.255.64/2910.45.255.65 – 10.45.255.7010.45.255.71
10610.45.255.72/2910.45.255.73 – 10.45.255.7810.45.255.79
10710.45.255.80/2910.45.255.81 – 10.45.255.8610.45.255.87
10810.45.255.88/2910.45.255.89 – 10.45.255.9410.45.255.95
10910.45.255.96/2910.45.255.97 – 10.45.255.10210.45.255.103
11010.45.255.104/2910.45.255.105 – 10.45.255.11010.45.255.111
11110.45.255.112/2910.45.255.113 – 10.45.255.11810.45.255.119
11210.45.255.120/2910.45.255.121 – 10.45.255.12610.45.255.127
11310.45.255.128/2910.45.255.129 – 10.45.255.13410.45.255.135
11410.45.255.136/2910.45.255.137 – 10.45.255.14210.45.255.143
11510.45.255.144/2910.45.255.145 – 10.45.255.15010.45.255.151
11610.45.255.152/2910.45.255.153 – 10.45.255.15810.45.255.159
11710.45.255.160/2910.45.255.161 – 10.45.255.16610.45.255.167
11810.45.255.168/2910.45.255.169 – 10.45.255.17410.45.255.175
11910.45.255.176/2910.45.255.177 – 10.45.255.18210.45.255.183
12010.45.255.184/2910.45.255.185 – 10.45.255.19010.45.255.191
12110.45.255.192/2910.45.255.193 – 10.45.255.19810.45.255.199
12210.45.255.200/2910.45.255.201 – 10.45.255.20610.45.255.207
12310.45.255.208/2910.45.255.209 – 10.45.255.21410.45.255.215
12410.45.255.216/2910.45.255.217 – 10.45.255.22210.45.255.223
12510.45.255.224/2910.45.255.225 – 10.45.255.23010.45.255.231
12610.45.255.232/2910.45.255.233 – 10.45.255.23810.45.255.239
12710.45.255.240/2910.45.255.241 – 10.45.255.24610.45.255.247
12810.45.255.248/2910.45.255.249 – 10.45.255.25410.45.255.255
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 →