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)10.78.112.0/23
network10.78.112.0/23
broadcast10.78.113.255
first host10.78.112.1
last host10.78.113.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.78.112.0/23
address00001010.01001110.01110000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01001110.01110000.00000000
broadcast00001010.01001110.01110001.11111111
green = network part, grey = host part
hex0x0a4e7000
decimal172912640
reverse dns0.112.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:7000

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.112.0/3010.78.112.1 – 10.78.112.210.78.112.3
210.78.112.4/3010.78.112.5 – 10.78.112.610.78.112.7
310.78.112.8/3010.78.112.9 – 10.78.112.1010.78.112.11
410.78.112.12/3010.78.112.13 – 10.78.112.1410.78.112.15
510.78.112.16/3010.78.112.17 – 10.78.112.1810.78.112.19
610.78.112.20/3010.78.112.21 – 10.78.112.2210.78.112.23
710.78.112.24/3010.78.112.25 – 10.78.112.2610.78.112.27
810.78.112.28/3010.78.112.29 – 10.78.112.3010.78.112.31
910.78.112.32/3010.78.112.33 – 10.78.112.3410.78.112.35
1010.78.112.36/3010.78.112.37 – 10.78.112.3810.78.112.39
1110.78.112.40/3010.78.112.41 – 10.78.112.4210.78.112.43
1210.78.112.44/3010.78.112.45 – 10.78.112.4610.78.112.47
1310.78.112.48/3010.78.112.49 – 10.78.112.5010.78.112.51
1410.78.112.52/3010.78.112.53 – 10.78.112.5410.78.112.55
1510.78.112.56/3010.78.112.57 – 10.78.112.5810.78.112.59
1610.78.112.60/3010.78.112.61 – 10.78.112.6210.78.112.63
1710.78.112.64/3010.78.112.65 – 10.78.112.6610.78.112.67
1810.78.112.68/3010.78.112.69 – 10.78.112.7010.78.112.71
1910.78.112.72/3010.78.112.73 – 10.78.112.7410.78.112.75
2010.78.112.76/3010.78.112.77 – 10.78.112.7810.78.112.79
2110.78.112.80/3010.78.112.81 – 10.78.112.8210.78.112.83
2210.78.112.84/3010.78.112.85 – 10.78.112.8610.78.112.87
2310.78.112.88/3010.78.112.89 – 10.78.112.9010.78.112.91
2410.78.112.92/3010.78.112.93 – 10.78.112.9410.78.112.95
2510.78.112.96/3010.78.112.97 – 10.78.112.9810.78.112.99
2610.78.112.100/3010.78.112.101 – 10.78.112.10210.78.112.103
2710.78.112.104/3010.78.112.105 – 10.78.112.10610.78.112.107
2810.78.112.108/3010.78.112.109 – 10.78.112.11010.78.112.111
2910.78.112.112/3010.78.112.113 – 10.78.112.11410.78.112.115
3010.78.112.116/3010.78.112.117 – 10.78.112.11810.78.112.119
3110.78.112.120/3010.78.112.121 – 10.78.112.12210.78.112.123
3210.78.112.124/3010.78.112.125 – 10.78.112.12610.78.112.127
3310.78.112.128/3010.78.112.129 – 10.78.112.13010.78.112.131
3410.78.112.132/3010.78.112.133 – 10.78.112.13410.78.112.135
3510.78.112.136/3010.78.112.137 – 10.78.112.13810.78.112.139
3610.78.112.140/3010.78.112.141 – 10.78.112.14210.78.112.143
3710.78.112.144/3010.78.112.145 – 10.78.112.14610.78.112.147
3810.78.112.148/3010.78.112.149 – 10.78.112.15010.78.112.151
3910.78.112.152/3010.78.112.153 – 10.78.112.15410.78.112.155
4010.78.112.156/3010.78.112.157 – 10.78.112.15810.78.112.159
4110.78.112.160/3010.78.112.161 – 10.78.112.16210.78.112.163
4210.78.112.164/3010.78.112.165 – 10.78.112.16610.78.112.167
4310.78.112.168/3010.78.112.169 – 10.78.112.17010.78.112.171
4410.78.112.172/3010.78.112.173 – 10.78.112.17410.78.112.175
4510.78.112.176/3010.78.112.177 – 10.78.112.17810.78.112.179
4610.78.112.180/3010.78.112.181 – 10.78.112.18210.78.112.183
4710.78.112.184/3010.78.112.185 – 10.78.112.18610.78.112.187
4810.78.112.188/3010.78.112.189 – 10.78.112.19010.78.112.191
4910.78.112.192/3010.78.112.193 – 10.78.112.19410.78.112.195
5010.78.112.196/3010.78.112.197 – 10.78.112.19810.78.112.199
5110.78.112.200/3010.78.112.201 – 10.78.112.20210.78.112.203
5210.78.112.204/3010.78.112.205 – 10.78.112.20610.78.112.207
5310.78.112.208/3010.78.112.209 – 10.78.112.21010.78.112.211
5410.78.112.212/3010.78.112.213 – 10.78.112.21410.78.112.215
5510.78.112.216/3010.78.112.217 – 10.78.112.21810.78.112.219
5610.78.112.220/3010.78.112.221 – 10.78.112.22210.78.112.223
5710.78.112.224/3010.78.112.225 – 10.78.112.22610.78.112.227
5810.78.112.228/3010.78.112.229 – 10.78.112.23010.78.112.231
5910.78.112.232/3010.78.112.233 – 10.78.112.23410.78.112.235
6010.78.112.236/3010.78.112.237 – 10.78.112.23810.78.112.239
6110.78.112.240/3010.78.112.241 – 10.78.112.24210.78.112.243
6210.78.112.244/3010.78.112.245 – 10.78.112.24610.78.112.247
6310.78.112.248/3010.78.112.249 – 10.78.112.25010.78.112.251
6410.78.112.252/3010.78.112.253 – 10.78.112.25410.78.112.255
6510.78.113.0/3010.78.113.1 – 10.78.113.210.78.113.3
6610.78.113.4/3010.78.113.5 – 10.78.113.610.78.113.7
6710.78.113.8/3010.78.113.9 – 10.78.113.1010.78.113.11
6810.78.113.12/3010.78.113.13 – 10.78.113.1410.78.113.15
6910.78.113.16/3010.78.113.17 – 10.78.113.1810.78.113.19
7010.78.113.20/3010.78.113.21 – 10.78.113.2210.78.113.23
7110.78.113.24/3010.78.113.25 – 10.78.113.2610.78.113.27
7210.78.113.28/3010.78.113.29 – 10.78.113.3010.78.113.31
7310.78.113.32/3010.78.113.33 – 10.78.113.3410.78.113.35
7410.78.113.36/3010.78.113.37 – 10.78.113.3810.78.113.39
7510.78.113.40/3010.78.113.41 – 10.78.113.4210.78.113.43
7610.78.113.44/3010.78.113.45 – 10.78.113.4610.78.113.47
7710.78.113.48/3010.78.113.49 – 10.78.113.5010.78.113.51
7810.78.113.52/3010.78.113.53 – 10.78.113.5410.78.113.55
7910.78.113.56/3010.78.113.57 – 10.78.113.5810.78.113.59
8010.78.113.60/3010.78.113.61 – 10.78.113.6210.78.113.63
8110.78.113.64/3010.78.113.65 – 10.78.113.6610.78.113.67
8210.78.113.68/3010.78.113.69 – 10.78.113.7010.78.113.71
8310.78.113.72/3010.78.113.73 – 10.78.113.7410.78.113.75
8410.78.113.76/3010.78.113.77 – 10.78.113.7810.78.113.79
8510.78.113.80/3010.78.113.81 – 10.78.113.8210.78.113.83
8610.78.113.84/3010.78.113.85 – 10.78.113.8610.78.113.87
8710.78.113.88/3010.78.113.89 – 10.78.113.9010.78.113.91
8810.78.113.92/3010.78.113.93 – 10.78.113.9410.78.113.95
8910.78.113.96/3010.78.113.97 – 10.78.113.9810.78.113.99
9010.78.113.100/3010.78.113.101 – 10.78.113.10210.78.113.103
9110.78.113.104/3010.78.113.105 – 10.78.113.10610.78.113.107
9210.78.113.108/3010.78.113.109 – 10.78.113.11010.78.113.111
9310.78.113.112/3010.78.113.113 – 10.78.113.11410.78.113.115
9410.78.113.116/3010.78.113.117 – 10.78.113.11810.78.113.119
9510.78.113.120/3010.78.113.121 – 10.78.113.12210.78.113.123
9610.78.113.124/3010.78.113.125 – 10.78.113.12610.78.113.127
9710.78.113.128/3010.78.113.129 – 10.78.113.13010.78.113.131
9810.78.113.132/3010.78.113.133 – 10.78.113.13410.78.113.135
9910.78.113.136/3010.78.113.137 – 10.78.113.13810.78.113.139
10010.78.113.140/3010.78.113.141 – 10.78.113.14210.78.113.143
10110.78.113.144/3010.78.113.145 – 10.78.113.14610.78.113.147
10210.78.113.148/3010.78.113.149 – 10.78.113.15010.78.113.151
10310.78.113.152/3010.78.113.153 – 10.78.113.15410.78.113.155
10410.78.113.156/3010.78.113.157 – 10.78.113.15810.78.113.159
10510.78.113.160/3010.78.113.161 – 10.78.113.16210.78.113.163
10610.78.113.164/3010.78.113.165 – 10.78.113.16610.78.113.167
10710.78.113.168/3010.78.113.169 – 10.78.113.17010.78.113.171
10810.78.113.172/3010.78.113.173 – 10.78.113.17410.78.113.175
10910.78.113.176/3010.78.113.177 – 10.78.113.17810.78.113.179
11010.78.113.180/3010.78.113.181 – 10.78.113.18210.78.113.183
11110.78.113.184/3010.78.113.185 – 10.78.113.18610.78.113.187
11210.78.113.188/3010.78.113.189 – 10.78.113.19010.78.113.191
11310.78.113.192/3010.78.113.193 – 10.78.113.19410.78.113.195
11410.78.113.196/3010.78.113.197 – 10.78.113.19810.78.113.199
11510.78.113.200/3010.78.113.201 – 10.78.113.20210.78.113.203
11610.78.113.204/3010.78.113.205 – 10.78.113.20610.78.113.207
11710.78.113.208/3010.78.113.209 – 10.78.113.21010.78.113.211
11810.78.113.212/3010.78.113.213 – 10.78.113.21410.78.113.215
11910.78.113.216/3010.78.113.217 – 10.78.113.21810.78.113.219
12010.78.113.220/3010.78.113.221 – 10.78.113.22210.78.113.223
12110.78.113.224/3010.78.113.225 – 10.78.113.22610.78.113.227
12210.78.113.228/3010.78.113.229 – 10.78.113.23010.78.113.231
12310.78.113.232/3010.78.113.233 – 10.78.113.23410.78.113.235
12410.78.113.236/3010.78.113.237 – 10.78.113.23810.78.113.239
12510.78.113.240/3010.78.113.241 – 10.78.113.24210.78.113.243
12610.78.113.244/3010.78.113.245 – 10.78.113.24610.78.113.247
12710.78.113.248/3010.78.113.249 – 10.78.113.25010.78.113.251
12810.78.113.252/3010.78.113.253 – 10.78.113.25410.78.113.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /23
/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-
/22255.255.252.01,0241,022-
/23255.255.254.05125101
/24255.255.255.02562542 split →
/25255.255.255.1281281264 split →
/26255.255.255.19264628 split →
/27255.255.255.224323016 split →
/28255.255.255.240161432 split →
/29255.255.255.2488664 split →
/30255.255.255.25242128 split →
/31255.255.255.25422256 split →
/32255.255.255.25511512 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 →