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)10.78.82.0/23
network10.78.82.0/23
broadcast10.78.83.255
first host10.78.82.1
last host10.78.83.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.78.82.0/23
address00001010.01001110.01010010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01001110.01010010.00000000
broadcast00001010.01001110.01010011.11111111
green = network part, grey = host part
hex0x0a4e5200
decimal172904960
reverse dns0.82.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:5200

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.82.0/3010.78.82.1 – 10.78.82.210.78.82.3
210.78.82.4/3010.78.82.5 – 10.78.82.610.78.82.7
310.78.82.8/3010.78.82.9 – 10.78.82.1010.78.82.11
410.78.82.12/3010.78.82.13 – 10.78.82.1410.78.82.15
510.78.82.16/3010.78.82.17 – 10.78.82.1810.78.82.19
610.78.82.20/3010.78.82.21 – 10.78.82.2210.78.82.23
710.78.82.24/3010.78.82.25 – 10.78.82.2610.78.82.27
810.78.82.28/3010.78.82.29 – 10.78.82.3010.78.82.31
910.78.82.32/3010.78.82.33 – 10.78.82.3410.78.82.35
1010.78.82.36/3010.78.82.37 – 10.78.82.3810.78.82.39
1110.78.82.40/3010.78.82.41 – 10.78.82.4210.78.82.43
1210.78.82.44/3010.78.82.45 – 10.78.82.4610.78.82.47
1310.78.82.48/3010.78.82.49 – 10.78.82.5010.78.82.51
1410.78.82.52/3010.78.82.53 – 10.78.82.5410.78.82.55
1510.78.82.56/3010.78.82.57 – 10.78.82.5810.78.82.59
1610.78.82.60/3010.78.82.61 – 10.78.82.6210.78.82.63
1710.78.82.64/3010.78.82.65 – 10.78.82.6610.78.82.67
1810.78.82.68/3010.78.82.69 – 10.78.82.7010.78.82.71
1910.78.82.72/3010.78.82.73 – 10.78.82.7410.78.82.75
2010.78.82.76/3010.78.82.77 – 10.78.82.7810.78.82.79
2110.78.82.80/3010.78.82.81 – 10.78.82.8210.78.82.83
2210.78.82.84/3010.78.82.85 – 10.78.82.8610.78.82.87
2310.78.82.88/3010.78.82.89 – 10.78.82.9010.78.82.91
2410.78.82.92/3010.78.82.93 – 10.78.82.9410.78.82.95
2510.78.82.96/3010.78.82.97 – 10.78.82.9810.78.82.99
2610.78.82.100/3010.78.82.101 – 10.78.82.10210.78.82.103
2710.78.82.104/3010.78.82.105 – 10.78.82.10610.78.82.107
2810.78.82.108/3010.78.82.109 – 10.78.82.11010.78.82.111
2910.78.82.112/3010.78.82.113 – 10.78.82.11410.78.82.115
3010.78.82.116/3010.78.82.117 – 10.78.82.11810.78.82.119
3110.78.82.120/3010.78.82.121 – 10.78.82.12210.78.82.123
3210.78.82.124/3010.78.82.125 – 10.78.82.12610.78.82.127
3310.78.82.128/3010.78.82.129 – 10.78.82.13010.78.82.131
3410.78.82.132/3010.78.82.133 – 10.78.82.13410.78.82.135
3510.78.82.136/3010.78.82.137 – 10.78.82.13810.78.82.139
3610.78.82.140/3010.78.82.141 – 10.78.82.14210.78.82.143
3710.78.82.144/3010.78.82.145 – 10.78.82.14610.78.82.147
3810.78.82.148/3010.78.82.149 – 10.78.82.15010.78.82.151
3910.78.82.152/3010.78.82.153 – 10.78.82.15410.78.82.155
4010.78.82.156/3010.78.82.157 – 10.78.82.15810.78.82.159
4110.78.82.160/3010.78.82.161 – 10.78.82.16210.78.82.163
4210.78.82.164/3010.78.82.165 – 10.78.82.16610.78.82.167
4310.78.82.168/3010.78.82.169 – 10.78.82.17010.78.82.171
4410.78.82.172/3010.78.82.173 – 10.78.82.17410.78.82.175
4510.78.82.176/3010.78.82.177 – 10.78.82.17810.78.82.179
4610.78.82.180/3010.78.82.181 – 10.78.82.18210.78.82.183
4710.78.82.184/3010.78.82.185 – 10.78.82.18610.78.82.187
4810.78.82.188/3010.78.82.189 – 10.78.82.19010.78.82.191
4910.78.82.192/3010.78.82.193 – 10.78.82.19410.78.82.195
5010.78.82.196/3010.78.82.197 – 10.78.82.19810.78.82.199
5110.78.82.200/3010.78.82.201 – 10.78.82.20210.78.82.203
5210.78.82.204/3010.78.82.205 – 10.78.82.20610.78.82.207
5310.78.82.208/3010.78.82.209 – 10.78.82.21010.78.82.211
5410.78.82.212/3010.78.82.213 – 10.78.82.21410.78.82.215
5510.78.82.216/3010.78.82.217 – 10.78.82.21810.78.82.219
5610.78.82.220/3010.78.82.221 – 10.78.82.22210.78.82.223
5710.78.82.224/3010.78.82.225 – 10.78.82.22610.78.82.227
5810.78.82.228/3010.78.82.229 – 10.78.82.23010.78.82.231
5910.78.82.232/3010.78.82.233 – 10.78.82.23410.78.82.235
6010.78.82.236/3010.78.82.237 – 10.78.82.23810.78.82.239
6110.78.82.240/3010.78.82.241 – 10.78.82.24210.78.82.243
6210.78.82.244/3010.78.82.245 – 10.78.82.24610.78.82.247
6310.78.82.248/3010.78.82.249 – 10.78.82.25010.78.82.251
6410.78.82.252/3010.78.82.253 – 10.78.82.25410.78.82.255
6510.78.83.0/3010.78.83.1 – 10.78.83.210.78.83.3
6610.78.83.4/3010.78.83.5 – 10.78.83.610.78.83.7
6710.78.83.8/3010.78.83.9 – 10.78.83.1010.78.83.11
6810.78.83.12/3010.78.83.13 – 10.78.83.1410.78.83.15
6910.78.83.16/3010.78.83.17 – 10.78.83.1810.78.83.19
7010.78.83.20/3010.78.83.21 – 10.78.83.2210.78.83.23
7110.78.83.24/3010.78.83.25 – 10.78.83.2610.78.83.27
7210.78.83.28/3010.78.83.29 – 10.78.83.3010.78.83.31
7310.78.83.32/3010.78.83.33 – 10.78.83.3410.78.83.35
7410.78.83.36/3010.78.83.37 – 10.78.83.3810.78.83.39
7510.78.83.40/3010.78.83.41 – 10.78.83.4210.78.83.43
7610.78.83.44/3010.78.83.45 – 10.78.83.4610.78.83.47
7710.78.83.48/3010.78.83.49 – 10.78.83.5010.78.83.51
7810.78.83.52/3010.78.83.53 – 10.78.83.5410.78.83.55
7910.78.83.56/3010.78.83.57 – 10.78.83.5810.78.83.59
8010.78.83.60/3010.78.83.61 – 10.78.83.6210.78.83.63
8110.78.83.64/3010.78.83.65 – 10.78.83.6610.78.83.67
8210.78.83.68/3010.78.83.69 – 10.78.83.7010.78.83.71
8310.78.83.72/3010.78.83.73 – 10.78.83.7410.78.83.75
8410.78.83.76/3010.78.83.77 – 10.78.83.7810.78.83.79
8510.78.83.80/3010.78.83.81 – 10.78.83.8210.78.83.83
8610.78.83.84/3010.78.83.85 – 10.78.83.8610.78.83.87
8710.78.83.88/3010.78.83.89 – 10.78.83.9010.78.83.91
8810.78.83.92/3010.78.83.93 – 10.78.83.9410.78.83.95
8910.78.83.96/3010.78.83.97 – 10.78.83.9810.78.83.99
9010.78.83.100/3010.78.83.101 – 10.78.83.10210.78.83.103
9110.78.83.104/3010.78.83.105 – 10.78.83.10610.78.83.107
9210.78.83.108/3010.78.83.109 – 10.78.83.11010.78.83.111
9310.78.83.112/3010.78.83.113 – 10.78.83.11410.78.83.115
9410.78.83.116/3010.78.83.117 – 10.78.83.11810.78.83.119
9510.78.83.120/3010.78.83.121 – 10.78.83.12210.78.83.123
9610.78.83.124/3010.78.83.125 – 10.78.83.12610.78.83.127
9710.78.83.128/3010.78.83.129 – 10.78.83.13010.78.83.131
9810.78.83.132/3010.78.83.133 – 10.78.83.13410.78.83.135
9910.78.83.136/3010.78.83.137 – 10.78.83.13810.78.83.139
10010.78.83.140/3010.78.83.141 – 10.78.83.14210.78.83.143
10110.78.83.144/3010.78.83.145 – 10.78.83.14610.78.83.147
10210.78.83.148/3010.78.83.149 – 10.78.83.15010.78.83.151
10310.78.83.152/3010.78.83.153 – 10.78.83.15410.78.83.155
10410.78.83.156/3010.78.83.157 – 10.78.83.15810.78.83.159
10510.78.83.160/3010.78.83.161 – 10.78.83.16210.78.83.163
10610.78.83.164/3010.78.83.165 – 10.78.83.16610.78.83.167
10710.78.83.168/3010.78.83.169 – 10.78.83.17010.78.83.171
10810.78.83.172/3010.78.83.173 – 10.78.83.17410.78.83.175
10910.78.83.176/3010.78.83.177 – 10.78.83.17810.78.83.179
11010.78.83.180/3010.78.83.181 – 10.78.83.18210.78.83.183
11110.78.83.184/3010.78.83.185 – 10.78.83.18610.78.83.187
11210.78.83.188/3010.78.83.189 – 10.78.83.19010.78.83.191
11310.78.83.192/3010.78.83.193 – 10.78.83.19410.78.83.195
11410.78.83.196/3010.78.83.197 – 10.78.83.19810.78.83.199
11510.78.83.200/3010.78.83.201 – 10.78.83.20210.78.83.203
11610.78.83.204/3010.78.83.205 – 10.78.83.20610.78.83.207
11710.78.83.208/3010.78.83.209 – 10.78.83.21010.78.83.211
11810.78.83.212/3010.78.83.213 – 10.78.83.21410.78.83.215
11910.78.83.216/3010.78.83.217 – 10.78.83.21810.78.83.219
12010.78.83.220/3010.78.83.221 – 10.78.83.22210.78.83.223
12110.78.83.224/3010.78.83.225 – 10.78.83.22610.78.83.227
12210.78.83.228/3010.78.83.229 – 10.78.83.23010.78.83.231
12310.78.83.232/3010.78.83.233 – 10.78.83.23410.78.83.235
12410.78.83.236/3010.78.83.237 – 10.78.83.23810.78.83.239
12510.78.83.240/3010.78.83.241 – 10.78.83.24210.78.83.243
12610.78.83.244/3010.78.83.245 – 10.78.83.24610.78.83.247
12710.78.83.248/3010.78.83.249 – 10.78.83.25010.78.83.251
12810.78.83.252/3010.78.83.253 – 10.78.83.25410.78.83.255
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 →