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)10.78.110.0/23
network10.78.110.0/23
broadcast10.78.111.255
first host10.78.110.1
last host10.78.111.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.78.110.0/23
address00001010.01001110.01101110.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01001110.01101110.00000000
broadcast00001010.01001110.01101111.11111111
green = network part, grey = host part
hex0x0a4e6e00
decimal172912128
reverse dns0.110.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:6e00

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.110.0/3010.78.110.1 – 10.78.110.210.78.110.3
210.78.110.4/3010.78.110.5 – 10.78.110.610.78.110.7
310.78.110.8/3010.78.110.9 – 10.78.110.1010.78.110.11
410.78.110.12/3010.78.110.13 – 10.78.110.1410.78.110.15
510.78.110.16/3010.78.110.17 – 10.78.110.1810.78.110.19
610.78.110.20/3010.78.110.21 – 10.78.110.2210.78.110.23
710.78.110.24/3010.78.110.25 – 10.78.110.2610.78.110.27
810.78.110.28/3010.78.110.29 – 10.78.110.3010.78.110.31
910.78.110.32/3010.78.110.33 – 10.78.110.3410.78.110.35
1010.78.110.36/3010.78.110.37 – 10.78.110.3810.78.110.39
1110.78.110.40/3010.78.110.41 – 10.78.110.4210.78.110.43
1210.78.110.44/3010.78.110.45 – 10.78.110.4610.78.110.47
1310.78.110.48/3010.78.110.49 – 10.78.110.5010.78.110.51
1410.78.110.52/3010.78.110.53 – 10.78.110.5410.78.110.55
1510.78.110.56/3010.78.110.57 – 10.78.110.5810.78.110.59
1610.78.110.60/3010.78.110.61 – 10.78.110.6210.78.110.63
1710.78.110.64/3010.78.110.65 – 10.78.110.6610.78.110.67
1810.78.110.68/3010.78.110.69 – 10.78.110.7010.78.110.71
1910.78.110.72/3010.78.110.73 – 10.78.110.7410.78.110.75
2010.78.110.76/3010.78.110.77 – 10.78.110.7810.78.110.79
2110.78.110.80/3010.78.110.81 – 10.78.110.8210.78.110.83
2210.78.110.84/3010.78.110.85 – 10.78.110.8610.78.110.87
2310.78.110.88/3010.78.110.89 – 10.78.110.9010.78.110.91
2410.78.110.92/3010.78.110.93 – 10.78.110.9410.78.110.95
2510.78.110.96/3010.78.110.97 – 10.78.110.9810.78.110.99
2610.78.110.100/3010.78.110.101 – 10.78.110.10210.78.110.103
2710.78.110.104/3010.78.110.105 – 10.78.110.10610.78.110.107
2810.78.110.108/3010.78.110.109 – 10.78.110.11010.78.110.111
2910.78.110.112/3010.78.110.113 – 10.78.110.11410.78.110.115
3010.78.110.116/3010.78.110.117 – 10.78.110.11810.78.110.119
3110.78.110.120/3010.78.110.121 – 10.78.110.12210.78.110.123
3210.78.110.124/3010.78.110.125 – 10.78.110.12610.78.110.127
3310.78.110.128/3010.78.110.129 – 10.78.110.13010.78.110.131
3410.78.110.132/3010.78.110.133 – 10.78.110.13410.78.110.135
3510.78.110.136/3010.78.110.137 – 10.78.110.13810.78.110.139
3610.78.110.140/3010.78.110.141 – 10.78.110.14210.78.110.143
3710.78.110.144/3010.78.110.145 – 10.78.110.14610.78.110.147
3810.78.110.148/3010.78.110.149 – 10.78.110.15010.78.110.151
3910.78.110.152/3010.78.110.153 – 10.78.110.15410.78.110.155
4010.78.110.156/3010.78.110.157 – 10.78.110.15810.78.110.159
4110.78.110.160/3010.78.110.161 – 10.78.110.16210.78.110.163
4210.78.110.164/3010.78.110.165 – 10.78.110.16610.78.110.167
4310.78.110.168/3010.78.110.169 – 10.78.110.17010.78.110.171
4410.78.110.172/3010.78.110.173 – 10.78.110.17410.78.110.175
4510.78.110.176/3010.78.110.177 – 10.78.110.17810.78.110.179
4610.78.110.180/3010.78.110.181 – 10.78.110.18210.78.110.183
4710.78.110.184/3010.78.110.185 – 10.78.110.18610.78.110.187
4810.78.110.188/3010.78.110.189 – 10.78.110.19010.78.110.191
4910.78.110.192/3010.78.110.193 – 10.78.110.19410.78.110.195
5010.78.110.196/3010.78.110.197 – 10.78.110.19810.78.110.199
5110.78.110.200/3010.78.110.201 – 10.78.110.20210.78.110.203
5210.78.110.204/3010.78.110.205 – 10.78.110.20610.78.110.207
5310.78.110.208/3010.78.110.209 – 10.78.110.21010.78.110.211
5410.78.110.212/3010.78.110.213 – 10.78.110.21410.78.110.215
5510.78.110.216/3010.78.110.217 – 10.78.110.21810.78.110.219
5610.78.110.220/3010.78.110.221 – 10.78.110.22210.78.110.223
5710.78.110.224/3010.78.110.225 – 10.78.110.22610.78.110.227
5810.78.110.228/3010.78.110.229 – 10.78.110.23010.78.110.231
5910.78.110.232/3010.78.110.233 – 10.78.110.23410.78.110.235
6010.78.110.236/3010.78.110.237 – 10.78.110.23810.78.110.239
6110.78.110.240/3010.78.110.241 – 10.78.110.24210.78.110.243
6210.78.110.244/3010.78.110.245 – 10.78.110.24610.78.110.247
6310.78.110.248/3010.78.110.249 – 10.78.110.25010.78.110.251
6410.78.110.252/3010.78.110.253 – 10.78.110.25410.78.110.255
6510.78.111.0/3010.78.111.1 – 10.78.111.210.78.111.3
6610.78.111.4/3010.78.111.5 – 10.78.111.610.78.111.7
6710.78.111.8/3010.78.111.9 – 10.78.111.1010.78.111.11
6810.78.111.12/3010.78.111.13 – 10.78.111.1410.78.111.15
6910.78.111.16/3010.78.111.17 – 10.78.111.1810.78.111.19
7010.78.111.20/3010.78.111.21 – 10.78.111.2210.78.111.23
7110.78.111.24/3010.78.111.25 – 10.78.111.2610.78.111.27
7210.78.111.28/3010.78.111.29 – 10.78.111.3010.78.111.31
7310.78.111.32/3010.78.111.33 – 10.78.111.3410.78.111.35
7410.78.111.36/3010.78.111.37 – 10.78.111.3810.78.111.39
7510.78.111.40/3010.78.111.41 – 10.78.111.4210.78.111.43
7610.78.111.44/3010.78.111.45 – 10.78.111.4610.78.111.47
7710.78.111.48/3010.78.111.49 – 10.78.111.5010.78.111.51
7810.78.111.52/3010.78.111.53 – 10.78.111.5410.78.111.55
7910.78.111.56/3010.78.111.57 – 10.78.111.5810.78.111.59
8010.78.111.60/3010.78.111.61 – 10.78.111.6210.78.111.63
8110.78.111.64/3010.78.111.65 – 10.78.111.6610.78.111.67
8210.78.111.68/3010.78.111.69 – 10.78.111.7010.78.111.71
8310.78.111.72/3010.78.111.73 – 10.78.111.7410.78.111.75
8410.78.111.76/3010.78.111.77 – 10.78.111.7810.78.111.79
8510.78.111.80/3010.78.111.81 – 10.78.111.8210.78.111.83
8610.78.111.84/3010.78.111.85 – 10.78.111.8610.78.111.87
8710.78.111.88/3010.78.111.89 – 10.78.111.9010.78.111.91
8810.78.111.92/3010.78.111.93 – 10.78.111.9410.78.111.95
8910.78.111.96/3010.78.111.97 – 10.78.111.9810.78.111.99
9010.78.111.100/3010.78.111.101 – 10.78.111.10210.78.111.103
9110.78.111.104/3010.78.111.105 – 10.78.111.10610.78.111.107
9210.78.111.108/3010.78.111.109 – 10.78.111.11010.78.111.111
9310.78.111.112/3010.78.111.113 – 10.78.111.11410.78.111.115
9410.78.111.116/3010.78.111.117 – 10.78.111.11810.78.111.119
9510.78.111.120/3010.78.111.121 – 10.78.111.12210.78.111.123
9610.78.111.124/3010.78.111.125 – 10.78.111.12610.78.111.127
9710.78.111.128/3010.78.111.129 – 10.78.111.13010.78.111.131
9810.78.111.132/3010.78.111.133 – 10.78.111.13410.78.111.135
9910.78.111.136/3010.78.111.137 – 10.78.111.13810.78.111.139
10010.78.111.140/3010.78.111.141 – 10.78.111.14210.78.111.143
10110.78.111.144/3010.78.111.145 – 10.78.111.14610.78.111.147
10210.78.111.148/3010.78.111.149 – 10.78.111.15010.78.111.151
10310.78.111.152/3010.78.111.153 – 10.78.111.15410.78.111.155
10410.78.111.156/3010.78.111.157 – 10.78.111.15810.78.111.159
10510.78.111.160/3010.78.111.161 – 10.78.111.16210.78.111.163
10610.78.111.164/3010.78.111.165 – 10.78.111.16610.78.111.167
10710.78.111.168/3010.78.111.169 – 10.78.111.17010.78.111.171
10810.78.111.172/3010.78.111.173 – 10.78.111.17410.78.111.175
10910.78.111.176/3010.78.111.177 – 10.78.111.17810.78.111.179
11010.78.111.180/3010.78.111.181 – 10.78.111.18210.78.111.183
11110.78.111.184/3010.78.111.185 – 10.78.111.18610.78.111.187
11210.78.111.188/3010.78.111.189 – 10.78.111.19010.78.111.191
11310.78.111.192/3010.78.111.193 – 10.78.111.19410.78.111.195
11410.78.111.196/3010.78.111.197 – 10.78.111.19810.78.111.199
11510.78.111.200/3010.78.111.201 – 10.78.111.20210.78.111.203
11610.78.111.204/3010.78.111.205 – 10.78.111.20610.78.111.207
11710.78.111.208/3010.78.111.209 – 10.78.111.21010.78.111.211
11810.78.111.212/3010.78.111.213 – 10.78.111.21410.78.111.215
11910.78.111.216/3010.78.111.217 – 10.78.111.21810.78.111.219
12010.78.111.220/3010.78.111.221 – 10.78.111.22210.78.111.223
12110.78.111.224/3010.78.111.225 – 10.78.111.22610.78.111.227
12210.78.111.228/3010.78.111.229 – 10.78.111.23010.78.111.231
12310.78.111.232/3010.78.111.233 – 10.78.111.23410.78.111.235
12410.78.111.236/3010.78.111.237 – 10.78.111.23810.78.111.239
12510.78.111.240/3010.78.111.241 – 10.78.111.24210.78.111.243
12610.78.111.244/3010.78.111.245 – 10.78.111.24610.78.111.247
12710.78.111.248/3010.78.111.249 – 10.78.111.25010.78.111.251
12810.78.111.252/3010.78.111.253 – 10.78.111.25410.78.111.255
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 →