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)10.78.96.0/23
network10.78.96.0/23
broadcast10.78.97.255
first host10.78.96.1
last host10.78.97.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.78.96.0/23
address00001010.01001110.01100000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01001110.01100000.00000000
broadcast00001010.01001110.01100001.11111111
green = network part, grey = host part
hex0x0a4e6000
decimal172908544
reverse dns0.96.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:6000

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.96.0/3010.78.96.1 – 10.78.96.210.78.96.3
210.78.96.4/3010.78.96.5 – 10.78.96.610.78.96.7
310.78.96.8/3010.78.96.9 – 10.78.96.1010.78.96.11
410.78.96.12/3010.78.96.13 – 10.78.96.1410.78.96.15
510.78.96.16/3010.78.96.17 – 10.78.96.1810.78.96.19
610.78.96.20/3010.78.96.21 – 10.78.96.2210.78.96.23
710.78.96.24/3010.78.96.25 – 10.78.96.2610.78.96.27
810.78.96.28/3010.78.96.29 – 10.78.96.3010.78.96.31
910.78.96.32/3010.78.96.33 – 10.78.96.3410.78.96.35
1010.78.96.36/3010.78.96.37 – 10.78.96.3810.78.96.39
1110.78.96.40/3010.78.96.41 – 10.78.96.4210.78.96.43
1210.78.96.44/3010.78.96.45 – 10.78.96.4610.78.96.47
1310.78.96.48/3010.78.96.49 – 10.78.96.5010.78.96.51
1410.78.96.52/3010.78.96.53 – 10.78.96.5410.78.96.55
1510.78.96.56/3010.78.96.57 – 10.78.96.5810.78.96.59
1610.78.96.60/3010.78.96.61 – 10.78.96.6210.78.96.63
1710.78.96.64/3010.78.96.65 – 10.78.96.6610.78.96.67
1810.78.96.68/3010.78.96.69 – 10.78.96.7010.78.96.71
1910.78.96.72/3010.78.96.73 – 10.78.96.7410.78.96.75
2010.78.96.76/3010.78.96.77 – 10.78.96.7810.78.96.79
2110.78.96.80/3010.78.96.81 – 10.78.96.8210.78.96.83
2210.78.96.84/3010.78.96.85 – 10.78.96.8610.78.96.87
2310.78.96.88/3010.78.96.89 – 10.78.96.9010.78.96.91
2410.78.96.92/3010.78.96.93 – 10.78.96.9410.78.96.95
2510.78.96.96/3010.78.96.97 – 10.78.96.9810.78.96.99
2610.78.96.100/3010.78.96.101 – 10.78.96.10210.78.96.103
2710.78.96.104/3010.78.96.105 – 10.78.96.10610.78.96.107
2810.78.96.108/3010.78.96.109 – 10.78.96.11010.78.96.111
2910.78.96.112/3010.78.96.113 – 10.78.96.11410.78.96.115
3010.78.96.116/3010.78.96.117 – 10.78.96.11810.78.96.119
3110.78.96.120/3010.78.96.121 – 10.78.96.12210.78.96.123
3210.78.96.124/3010.78.96.125 – 10.78.96.12610.78.96.127
3310.78.96.128/3010.78.96.129 – 10.78.96.13010.78.96.131
3410.78.96.132/3010.78.96.133 – 10.78.96.13410.78.96.135
3510.78.96.136/3010.78.96.137 – 10.78.96.13810.78.96.139
3610.78.96.140/3010.78.96.141 – 10.78.96.14210.78.96.143
3710.78.96.144/3010.78.96.145 – 10.78.96.14610.78.96.147
3810.78.96.148/3010.78.96.149 – 10.78.96.15010.78.96.151
3910.78.96.152/3010.78.96.153 – 10.78.96.15410.78.96.155
4010.78.96.156/3010.78.96.157 – 10.78.96.15810.78.96.159
4110.78.96.160/3010.78.96.161 – 10.78.96.16210.78.96.163
4210.78.96.164/3010.78.96.165 – 10.78.96.16610.78.96.167
4310.78.96.168/3010.78.96.169 – 10.78.96.17010.78.96.171
4410.78.96.172/3010.78.96.173 – 10.78.96.17410.78.96.175
4510.78.96.176/3010.78.96.177 – 10.78.96.17810.78.96.179
4610.78.96.180/3010.78.96.181 – 10.78.96.18210.78.96.183
4710.78.96.184/3010.78.96.185 – 10.78.96.18610.78.96.187
4810.78.96.188/3010.78.96.189 – 10.78.96.19010.78.96.191
4910.78.96.192/3010.78.96.193 – 10.78.96.19410.78.96.195
5010.78.96.196/3010.78.96.197 – 10.78.96.19810.78.96.199
5110.78.96.200/3010.78.96.201 – 10.78.96.20210.78.96.203
5210.78.96.204/3010.78.96.205 – 10.78.96.20610.78.96.207
5310.78.96.208/3010.78.96.209 – 10.78.96.21010.78.96.211
5410.78.96.212/3010.78.96.213 – 10.78.96.21410.78.96.215
5510.78.96.216/3010.78.96.217 – 10.78.96.21810.78.96.219
5610.78.96.220/3010.78.96.221 – 10.78.96.22210.78.96.223
5710.78.96.224/3010.78.96.225 – 10.78.96.22610.78.96.227
5810.78.96.228/3010.78.96.229 – 10.78.96.23010.78.96.231
5910.78.96.232/3010.78.96.233 – 10.78.96.23410.78.96.235
6010.78.96.236/3010.78.96.237 – 10.78.96.23810.78.96.239
6110.78.96.240/3010.78.96.241 – 10.78.96.24210.78.96.243
6210.78.96.244/3010.78.96.245 – 10.78.96.24610.78.96.247
6310.78.96.248/3010.78.96.249 – 10.78.96.25010.78.96.251
6410.78.96.252/3010.78.96.253 – 10.78.96.25410.78.96.255
6510.78.97.0/3010.78.97.1 – 10.78.97.210.78.97.3
6610.78.97.4/3010.78.97.5 – 10.78.97.610.78.97.7
6710.78.97.8/3010.78.97.9 – 10.78.97.1010.78.97.11
6810.78.97.12/3010.78.97.13 – 10.78.97.1410.78.97.15
6910.78.97.16/3010.78.97.17 – 10.78.97.1810.78.97.19
7010.78.97.20/3010.78.97.21 – 10.78.97.2210.78.97.23
7110.78.97.24/3010.78.97.25 – 10.78.97.2610.78.97.27
7210.78.97.28/3010.78.97.29 – 10.78.97.3010.78.97.31
7310.78.97.32/3010.78.97.33 – 10.78.97.3410.78.97.35
7410.78.97.36/3010.78.97.37 – 10.78.97.3810.78.97.39
7510.78.97.40/3010.78.97.41 – 10.78.97.4210.78.97.43
7610.78.97.44/3010.78.97.45 – 10.78.97.4610.78.97.47
7710.78.97.48/3010.78.97.49 – 10.78.97.5010.78.97.51
7810.78.97.52/3010.78.97.53 – 10.78.97.5410.78.97.55
7910.78.97.56/3010.78.97.57 – 10.78.97.5810.78.97.59
8010.78.97.60/3010.78.97.61 – 10.78.97.6210.78.97.63
8110.78.97.64/3010.78.97.65 – 10.78.97.6610.78.97.67
8210.78.97.68/3010.78.97.69 – 10.78.97.7010.78.97.71
8310.78.97.72/3010.78.97.73 – 10.78.97.7410.78.97.75
8410.78.97.76/3010.78.97.77 – 10.78.97.7810.78.97.79
8510.78.97.80/3010.78.97.81 – 10.78.97.8210.78.97.83
8610.78.97.84/3010.78.97.85 – 10.78.97.8610.78.97.87
8710.78.97.88/3010.78.97.89 – 10.78.97.9010.78.97.91
8810.78.97.92/3010.78.97.93 – 10.78.97.9410.78.97.95
8910.78.97.96/3010.78.97.97 – 10.78.97.9810.78.97.99
9010.78.97.100/3010.78.97.101 – 10.78.97.10210.78.97.103
9110.78.97.104/3010.78.97.105 – 10.78.97.10610.78.97.107
9210.78.97.108/3010.78.97.109 – 10.78.97.11010.78.97.111
9310.78.97.112/3010.78.97.113 – 10.78.97.11410.78.97.115
9410.78.97.116/3010.78.97.117 – 10.78.97.11810.78.97.119
9510.78.97.120/3010.78.97.121 – 10.78.97.12210.78.97.123
9610.78.97.124/3010.78.97.125 – 10.78.97.12610.78.97.127
9710.78.97.128/3010.78.97.129 – 10.78.97.13010.78.97.131
9810.78.97.132/3010.78.97.133 – 10.78.97.13410.78.97.135
9910.78.97.136/3010.78.97.137 – 10.78.97.13810.78.97.139
10010.78.97.140/3010.78.97.141 – 10.78.97.14210.78.97.143
10110.78.97.144/3010.78.97.145 – 10.78.97.14610.78.97.147
10210.78.97.148/3010.78.97.149 – 10.78.97.15010.78.97.151
10310.78.97.152/3010.78.97.153 – 10.78.97.15410.78.97.155
10410.78.97.156/3010.78.97.157 – 10.78.97.15810.78.97.159
10510.78.97.160/3010.78.97.161 – 10.78.97.16210.78.97.163
10610.78.97.164/3010.78.97.165 – 10.78.97.16610.78.97.167
10710.78.97.168/3010.78.97.169 – 10.78.97.17010.78.97.171
10810.78.97.172/3010.78.97.173 – 10.78.97.17410.78.97.175
10910.78.97.176/3010.78.97.177 – 10.78.97.17810.78.97.179
11010.78.97.180/3010.78.97.181 – 10.78.97.18210.78.97.183
11110.78.97.184/3010.78.97.185 – 10.78.97.18610.78.97.187
11210.78.97.188/3010.78.97.189 – 10.78.97.19010.78.97.191
11310.78.97.192/3010.78.97.193 – 10.78.97.19410.78.97.195
11410.78.97.196/3010.78.97.197 – 10.78.97.19810.78.97.199
11510.78.97.200/3010.78.97.201 – 10.78.97.20210.78.97.203
11610.78.97.204/3010.78.97.205 – 10.78.97.20610.78.97.207
11710.78.97.208/3010.78.97.209 – 10.78.97.21010.78.97.211
11810.78.97.212/3010.78.97.213 – 10.78.97.21410.78.97.215
11910.78.97.216/3010.78.97.217 – 10.78.97.21810.78.97.219
12010.78.97.220/3010.78.97.221 – 10.78.97.22210.78.97.223
12110.78.97.224/3010.78.97.225 – 10.78.97.22610.78.97.227
12210.78.97.228/3010.78.97.229 – 10.78.97.23010.78.97.231
12310.78.97.232/3010.78.97.233 – 10.78.97.23410.78.97.235
12410.78.97.236/3010.78.97.237 – 10.78.97.23810.78.97.239
12510.78.97.240/3010.78.97.241 – 10.78.97.24210.78.97.243
12610.78.97.244/3010.78.97.245 – 10.78.97.24610.78.97.247
12710.78.97.248/3010.78.97.249 – 10.78.97.25010.78.97.251
12810.78.97.252/3010.78.97.253 – 10.78.97.25410.78.97.255
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 →