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)10.78.111.0/24
network10.78.111.0/24
broadcast10.78.111.255
first host10.78.111.1
last host10.78.111.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.78.111.0/24
address00001010.01001110.01101111.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001110.01101111.00000000
broadcast00001010.01001110.01101111.11111111
green = network part, grey = host part
hex0x0a4e6f00
decimal172912384
reverse dns0.111.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:6f00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.111.0/3110.78.111.0 – 10.78.111.110.78.111.1
210.78.111.2/3110.78.111.2 – 10.78.111.310.78.111.3
310.78.111.4/3110.78.111.4 – 10.78.111.510.78.111.5
410.78.111.6/3110.78.111.6 – 10.78.111.710.78.111.7
510.78.111.8/3110.78.111.8 – 10.78.111.910.78.111.9
610.78.111.10/3110.78.111.10 – 10.78.111.1110.78.111.11
710.78.111.12/3110.78.111.12 – 10.78.111.1310.78.111.13
810.78.111.14/3110.78.111.14 – 10.78.111.1510.78.111.15
910.78.111.16/3110.78.111.16 – 10.78.111.1710.78.111.17
1010.78.111.18/3110.78.111.18 – 10.78.111.1910.78.111.19
1110.78.111.20/3110.78.111.20 – 10.78.111.2110.78.111.21
1210.78.111.22/3110.78.111.22 – 10.78.111.2310.78.111.23
1310.78.111.24/3110.78.111.24 – 10.78.111.2510.78.111.25
1410.78.111.26/3110.78.111.26 – 10.78.111.2710.78.111.27
1510.78.111.28/3110.78.111.28 – 10.78.111.2910.78.111.29
1610.78.111.30/3110.78.111.30 – 10.78.111.3110.78.111.31
1710.78.111.32/3110.78.111.32 – 10.78.111.3310.78.111.33
1810.78.111.34/3110.78.111.34 – 10.78.111.3510.78.111.35
1910.78.111.36/3110.78.111.36 – 10.78.111.3710.78.111.37
2010.78.111.38/3110.78.111.38 – 10.78.111.3910.78.111.39
2110.78.111.40/3110.78.111.40 – 10.78.111.4110.78.111.41
2210.78.111.42/3110.78.111.42 – 10.78.111.4310.78.111.43
2310.78.111.44/3110.78.111.44 – 10.78.111.4510.78.111.45
2410.78.111.46/3110.78.111.46 – 10.78.111.4710.78.111.47
2510.78.111.48/3110.78.111.48 – 10.78.111.4910.78.111.49
2610.78.111.50/3110.78.111.50 – 10.78.111.5110.78.111.51
2710.78.111.52/3110.78.111.52 – 10.78.111.5310.78.111.53
2810.78.111.54/3110.78.111.54 – 10.78.111.5510.78.111.55
2910.78.111.56/3110.78.111.56 – 10.78.111.5710.78.111.57
3010.78.111.58/3110.78.111.58 – 10.78.111.5910.78.111.59
3110.78.111.60/3110.78.111.60 – 10.78.111.6110.78.111.61
3210.78.111.62/3110.78.111.62 – 10.78.111.6310.78.111.63
3310.78.111.64/3110.78.111.64 – 10.78.111.6510.78.111.65
3410.78.111.66/3110.78.111.66 – 10.78.111.6710.78.111.67
3510.78.111.68/3110.78.111.68 – 10.78.111.6910.78.111.69
3610.78.111.70/3110.78.111.70 – 10.78.111.7110.78.111.71
3710.78.111.72/3110.78.111.72 – 10.78.111.7310.78.111.73
3810.78.111.74/3110.78.111.74 – 10.78.111.7510.78.111.75
3910.78.111.76/3110.78.111.76 – 10.78.111.7710.78.111.77
4010.78.111.78/3110.78.111.78 – 10.78.111.7910.78.111.79
4110.78.111.80/3110.78.111.80 – 10.78.111.8110.78.111.81
4210.78.111.82/3110.78.111.82 – 10.78.111.8310.78.111.83
4310.78.111.84/3110.78.111.84 – 10.78.111.8510.78.111.85
4410.78.111.86/3110.78.111.86 – 10.78.111.8710.78.111.87
4510.78.111.88/3110.78.111.88 – 10.78.111.8910.78.111.89
4610.78.111.90/3110.78.111.90 – 10.78.111.9110.78.111.91
4710.78.111.92/3110.78.111.92 – 10.78.111.9310.78.111.93
4810.78.111.94/3110.78.111.94 – 10.78.111.9510.78.111.95
4910.78.111.96/3110.78.111.96 – 10.78.111.9710.78.111.97
5010.78.111.98/3110.78.111.98 – 10.78.111.9910.78.111.99
5110.78.111.100/3110.78.111.100 – 10.78.111.10110.78.111.101
5210.78.111.102/3110.78.111.102 – 10.78.111.10310.78.111.103
5310.78.111.104/3110.78.111.104 – 10.78.111.10510.78.111.105
5410.78.111.106/3110.78.111.106 – 10.78.111.10710.78.111.107
5510.78.111.108/3110.78.111.108 – 10.78.111.10910.78.111.109
5610.78.111.110/3110.78.111.110 – 10.78.111.11110.78.111.111
5710.78.111.112/3110.78.111.112 – 10.78.111.11310.78.111.113
5810.78.111.114/3110.78.111.114 – 10.78.111.11510.78.111.115
5910.78.111.116/3110.78.111.116 – 10.78.111.11710.78.111.117
6010.78.111.118/3110.78.111.118 – 10.78.111.11910.78.111.119
6110.78.111.120/3110.78.111.120 – 10.78.111.12110.78.111.121
6210.78.111.122/3110.78.111.122 – 10.78.111.12310.78.111.123
6310.78.111.124/3110.78.111.124 – 10.78.111.12510.78.111.125
6410.78.111.126/3110.78.111.126 – 10.78.111.12710.78.111.127
6510.78.111.128/3110.78.111.128 – 10.78.111.12910.78.111.129
6610.78.111.130/3110.78.111.130 – 10.78.111.13110.78.111.131
6710.78.111.132/3110.78.111.132 – 10.78.111.13310.78.111.133
6810.78.111.134/3110.78.111.134 – 10.78.111.13510.78.111.135
6910.78.111.136/3110.78.111.136 – 10.78.111.13710.78.111.137
7010.78.111.138/3110.78.111.138 – 10.78.111.13910.78.111.139
7110.78.111.140/3110.78.111.140 – 10.78.111.14110.78.111.141
7210.78.111.142/3110.78.111.142 – 10.78.111.14310.78.111.143
7310.78.111.144/3110.78.111.144 – 10.78.111.14510.78.111.145
7410.78.111.146/3110.78.111.146 – 10.78.111.14710.78.111.147
7510.78.111.148/3110.78.111.148 – 10.78.111.14910.78.111.149
7610.78.111.150/3110.78.111.150 – 10.78.111.15110.78.111.151
7710.78.111.152/3110.78.111.152 – 10.78.111.15310.78.111.153
7810.78.111.154/3110.78.111.154 – 10.78.111.15510.78.111.155
7910.78.111.156/3110.78.111.156 – 10.78.111.15710.78.111.157
8010.78.111.158/3110.78.111.158 – 10.78.111.15910.78.111.159
8110.78.111.160/3110.78.111.160 – 10.78.111.16110.78.111.161
8210.78.111.162/3110.78.111.162 – 10.78.111.16310.78.111.163
8310.78.111.164/3110.78.111.164 – 10.78.111.16510.78.111.165
8410.78.111.166/3110.78.111.166 – 10.78.111.16710.78.111.167
8510.78.111.168/3110.78.111.168 – 10.78.111.16910.78.111.169
8610.78.111.170/3110.78.111.170 – 10.78.111.17110.78.111.171
8710.78.111.172/3110.78.111.172 – 10.78.111.17310.78.111.173
8810.78.111.174/3110.78.111.174 – 10.78.111.17510.78.111.175
8910.78.111.176/3110.78.111.176 – 10.78.111.17710.78.111.177
9010.78.111.178/3110.78.111.178 – 10.78.111.17910.78.111.179
9110.78.111.180/3110.78.111.180 – 10.78.111.18110.78.111.181
9210.78.111.182/3110.78.111.182 – 10.78.111.18310.78.111.183
9310.78.111.184/3110.78.111.184 – 10.78.111.18510.78.111.185
9410.78.111.186/3110.78.111.186 – 10.78.111.18710.78.111.187
9510.78.111.188/3110.78.111.188 – 10.78.111.18910.78.111.189
9610.78.111.190/3110.78.111.190 – 10.78.111.19110.78.111.191
9710.78.111.192/3110.78.111.192 – 10.78.111.19310.78.111.193
9810.78.111.194/3110.78.111.194 – 10.78.111.19510.78.111.195
9910.78.111.196/3110.78.111.196 – 10.78.111.19710.78.111.197
10010.78.111.198/3110.78.111.198 – 10.78.111.19910.78.111.199
10110.78.111.200/3110.78.111.200 – 10.78.111.20110.78.111.201
10210.78.111.202/3110.78.111.202 – 10.78.111.20310.78.111.203
10310.78.111.204/3110.78.111.204 – 10.78.111.20510.78.111.205
10410.78.111.206/3110.78.111.206 – 10.78.111.20710.78.111.207
10510.78.111.208/3110.78.111.208 – 10.78.111.20910.78.111.209
10610.78.111.210/3110.78.111.210 – 10.78.111.21110.78.111.211
10710.78.111.212/3110.78.111.212 – 10.78.111.21310.78.111.213
10810.78.111.214/3110.78.111.214 – 10.78.111.21510.78.111.215
10910.78.111.216/3110.78.111.216 – 10.78.111.21710.78.111.217
11010.78.111.218/3110.78.111.218 – 10.78.111.21910.78.111.219
11110.78.111.220/3110.78.111.220 – 10.78.111.22110.78.111.221
11210.78.111.222/3110.78.111.222 – 10.78.111.22310.78.111.223
11310.78.111.224/3110.78.111.224 – 10.78.111.22510.78.111.225
11410.78.111.226/3110.78.111.226 – 10.78.111.22710.78.111.227
11510.78.111.228/3110.78.111.228 – 10.78.111.22910.78.111.229
11610.78.111.230/3110.78.111.230 – 10.78.111.23110.78.111.231
11710.78.111.232/3110.78.111.232 – 10.78.111.23310.78.111.233
11810.78.111.234/3110.78.111.234 – 10.78.111.23510.78.111.235
11910.78.111.236/3110.78.111.236 – 10.78.111.23710.78.111.237
12010.78.111.238/3110.78.111.238 – 10.78.111.23910.78.111.239
12110.78.111.240/3110.78.111.240 – 10.78.111.24110.78.111.241
12210.78.111.242/3110.78.111.242 – 10.78.111.24310.78.111.243
12310.78.111.244/3110.78.111.244 – 10.78.111.24510.78.111.245
12410.78.111.246/3110.78.111.246 – 10.78.111.24710.78.111.247
12510.78.111.248/3110.78.111.248 – 10.78.111.24910.78.111.249
12610.78.111.250/3110.78.111.250 – 10.78.111.25110.78.111.251
12710.78.111.252/3110.78.111.252 – 10.78.111.25310.78.111.253
12810.78.111.254/3110.78.111.254 – 10.78.111.25510.78.111.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /24
/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-
/23255.255.254.0512510-
/24255.255.255.02562541
/25255.255.255.1281281262 split →
/26255.255.255.19264624 split →
/27255.255.255.22432308 split →
/28255.255.255.240161416 split →
/29255.255.255.2488632 split →
/30255.255.255.2524264 split →
/31255.255.255.25422128 split →
/32255.255.255.25511256 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 →