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)10.78.32.0/24
network10.78.32.0/24
broadcast10.78.32.255
first host10.78.32.1
last host10.78.32.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.78.32.0/24
address00001010.01001110.00100000.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001110.00100000.00000000
broadcast00001010.01001110.00100000.11111111
green = network part, grey = host part
hex0x0a4e2000
decimal172892160
reverse dns0.32.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:2000

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.32.0/3110.78.32.0 – 10.78.32.110.78.32.1
210.78.32.2/3110.78.32.2 – 10.78.32.310.78.32.3
310.78.32.4/3110.78.32.4 – 10.78.32.510.78.32.5
410.78.32.6/3110.78.32.6 – 10.78.32.710.78.32.7
510.78.32.8/3110.78.32.8 – 10.78.32.910.78.32.9
610.78.32.10/3110.78.32.10 – 10.78.32.1110.78.32.11
710.78.32.12/3110.78.32.12 – 10.78.32.1310.78.32.13
810.78.32.14/3110.78.32.14 – 10.78.32.1510.78.32.15
910.78.32.16/3110.78.32.16 – 10.78.32.1710.78.32.17
1010.78.32.18/3110.78.32.18 – 10.78.32.1910.78.32.19
1110.78.32.20/3110.78.32.20 – 10.78.32.2110.78.32.21
1210.78.32.22/3110.78.32.22 – 10.78.32.2310.78.32.23
1310.78.32.24/3110.78.32.24 – 10.78.32.2510.78.32.25
1410.78.32.26/3110.78.32.26 – 10.78.32.2710.78.32.27
1510.78.32.28/3110.78.32.28 – 10.78.32.2910.78.32.29
1610.78.32.30/3110.78.32.30 – 10.78.32.3110.78.32.31
1710.78.32.32/3110.78.32.32 – 10.78.32.3310.78.32.33
1810.78.32.34/3110.78.32.34 – 10.78.32.3510.78.32.35
1910.78.32.36/3110.78.32.36 – 10.78.32.3710.78.32.37
2010.78.32.38/3110.78.32.38 – 10.78.32.3910.78.32.39
2110.78.32.40/3110.78.32.40 – 10.78.32.4110.78.32.41
2210.78.32.42/3110.78.32.42 – 10.78.32.4310.78.32.43
2310.78.32.44/3110.78.32.44 – 10.78.32.4510.78.32.45
2410.78.32.46/3110.78.32.46 – 10.78.32.4710.78.32.47
2510.78.32.48/3110.78.32.48 – 10.78.32.4910.78.32.49
2610.78.32.50/3110.78.32.50 – 10.78.32.5110.78.32.51
2710.78.32.52/3110.78.32.52 – 10.78.32.5310.78.32.53
2810.78.32.54/3110.78.32.54 – 10.78.32.5510.78.32.55
2910.78.32.56/3110.78.32.56 – 10.78.32.5710.78.32.57
3010.78.32.58/3110.78.32.58 – 10.78.32.5910.78.32.59
3110.78.32.60/3110.78.32.60 – 10.78.32.6110.78.32.61
3210.78.32.62/3110.78.32.62 – 10.78.32.6310.78.32.63
3310.78.32.64/3110.78.32.64 – 10.78.32.6510.78.32.65
3410.78.32.66/3110.78.32.66 – 10.78.32.6710.78.32.67
3510.78.32.68/3110.78.32.68 – 10.78.32.6910.78.32.69
3610.78.32.70/3110.78.32.70 – 10.78.32.7110.78.32.71
3710.78.32.72/3110.78.32.72 – 10.78.32.7310.78.32.73
3810.78.32.74/3110.78.32.74 – 10.78.32.7510.78.32.75
3910.78.32.76/3110.78.32.76 – 10.78.32.7710.78.32.77
4010.78.32.78/3110.78.32.78 – 10.78.32.7910.78.32.79
4110.78.32.80/3110.78.32.80 – 10.78.32.8110.78.32.81
4210.78.32.82/3110.78.32.82 – 10.78.32.8310.78.32.83
4310.78.32.84/3110.78.32.84 – 10.78.32.8510.78.32.85
4410.78.32.86/3110.78.32.86 – 10.78.32.8710.78.32.87
4510.78.32.88/3110.78.32.88 – 10.78.32.8910.78.32.89
4610.78.32.90/3110.78.32.90 – 10.78.32.9110.78.32.91
4710.78.32.92/3110.78.32.92 – 10.78.32.9310.78.32.93
4810.78.32.94/3110.78.32.94 – 10.78.32.9510.78.32.95
4910.78.32.96/3110.78.32.96 – 10.78.32.9710.78.32.97
5010.78.32.98/3110.78.32.98 – 10.78.32.9910.78.32.99
5110.78.32.100/3110.78.32.100 – 10.78.32.10110.78.32.101
5210.78.32.102/3110.78.32.102 – 10.78.32.10310.78.32.103
5310.78.32.104/3110.78.32.104 – 10.78.32.10510.78.32.105
5410.78.32.106/3110.78.32.106 – 10.78.32.10710.78.32.107
5510.78.32.108/3110.78.32.108 – 10.78.32.10910.78.32.109
5610.78.32.110/3110.78.32.110 – 10.78.32.11110.78.32.111
5710.78.32.112/3110.78.32.112 – 10.78.32.11310.78.32.113
5810.78.32.114/3110.78.32.114 – 10.78.32.11510.78.32.115
5910.78.32.116/3110.78.32.116 – 10.78.32.11710.78.32.117
6010.78.32.118/3110.78.32.118 – 10.78.32.11910.78.32.119
6110.78.32.120/3110.78.32.120 – 10.78.32.12110.78.32.121
6210.78.32.122/3110.78.32.122 – 10.78.32.12310.78.32.123
6310.78.32.124/3110.78.32.124 – 10.78.32.12510.78.32.125
6410.78.32.126/3110.78.32.126 – 10.78.32.12710.78.32.127
6510.78.32.128/3110.78.32.128 – 10.78.32.12910.78.32.129
6610.78.32.130/3110.78.32.130 – 10.78.32.13110.78.32.131
6710.78.32.132/3110.78.32.132 – 10.78.32.13310.78.32.133
6810.78.32.134/3110.78.32.134 – 10.78.32.13510.78.32.135
6910.78.32.136/3110.78.32.136 – 10.78.32.13710.78.32.137
7010.78.32.138/3110.78.32.138 – 10.78.32.13910.78.32.139
7110.78.32.140/3110.78.32.140 – 10.78.32.14110.78.32.141
7210.78.32.142/3110.78.32.142 – 10.78.32.14310.78.32.143
7310.78.32.144/3110.78.32.144 – 10.78.32.14510.78.32.145
7410.78.32.146/3110.78.32.146 – 10.78.32.14710.78.32.147
7510.78.32.148/3110.78.32.148 – 10.78.32.14910.78.32.149
7610.78.32.150/3110.78.32.150 – 10.78.32.15110.78.32.151
7710.78.32.152/3110.78.32.152 – 10.78.32.15310.78.32.153
7810.78.32.154/3110.78.32.154 – 10.78.32.15510.78.32.155
7910.78.32.156/3110.78.32.156 – 10.78.32.15710.78.32.157
8010.78.32.158/3110.78.32.158 – 10.78.32.15910.78.32.159
8110.78.32.160/3110.78.32.160 – 10.78.32.16110.78.32.161
8210.78.32.162/3110.78.32.162 – 10.78.32.16310.78.32.163
8310.78.32.164/3110.78.32.164 – 10.78.32.16510.78.32.165
8410.78.32.166/3110.78.32.166 – 10.78.32.16710.78.32.167
8510.78.32.168/3110.78.32.168 – 10.78.32.16910.78.32.169
8610.78.32.170/3110.78.32.170 – 10.78.32.17110.78.32.171
8710.78.32.172/3110.78.32.172 – 10.78.32.17310.78.32.173
8810.78.32.174/3110.78.32.174 – 10.78.32.17510.78.32.175
8910.78.32.176/3110.78.32.176 – 10.78.32.17710.78.32.177
9010.78.32.178/3110.78.32.178 – 10.78.32.17910.78.32.179
9110.78.32.180/3110.78.32.180 – 10.78.32.18110.78.32.181
9210.78.32.182/3110.78.32.182 – 10.78.32.18310.78.32.183
9310.78.32.184/3110.78.32.184 – 10.78.32.18510.78.32.185
9410.78.32.186/3110.78.32.186 – 10.78.32.18710.78.32.187
9510.78.32.188/3110.78.32.188 – 10.78.32.18910.78.32.189
9610.78.32.190/3110.78.32.190 – 10.78.32.19110.78.32.191
9710.78.32.192/3110.78.32.192 – 10.78.32.19310.78.32.193
9810.78.32.194/3110.78.32.194 – 10.78.32.19510.78.32.195
9910.78.32.196/3110.78.32.196 – 10.78.32.19710.78.32.197
10010.78.32.198/3110.78.32.198 – 10.78.32.19910.78.32.199
10110.78.32.200/3110.78.32.200 – 10.78.32.20110.78.32.201
10210.78.32.202/3110.78.32.202 – 10.78.32.20310.78.32.203
10310.78.32.204/3110.78.32.204 – 10.78.32.20510.78.32.205
10410.78.32.206/3110.78.32.206 – 10.78.32.20710.78.32.207
10510.78.32.208/3110.78.32.208 – 10.78.32.20910.78.32.209
10610.78.32.210/3110.78.32.210 – 10.78.32.21110.78.32.211
10710.78.32.212/3110.78.32.212 – 10.78.32.21310.78.32.213
10810.78.32.214/3110.78.32.214 – 10.78.32.21510.78.32.215
10910.78.32.216/3110.78.32.216 – 10.78.32.21710.78.32.217
11010.78.32.218/3110.78.32.218 – 10.78.32.21910.78.32.219
11110.78.32.220/3110.78.32.220 – 10.78.32.22110.78.32.221
11210.78.32.222/3110.78.32.222 – 10.78.32.22310.78.32.223
11310.78.32.224/3110.78.32.224 – 10.78.32.22510.78.32.225
11410.78.32.226/3110.78.32.226 – 10.78.32.22710.78.32.227
11510.78.32.228/3110.78.32.228 – 10.78.32.22910.78.32.229
11610.78.32.230/3110.78.32.230 – 10.78.32.23110.78.32.231
11710.78.32.232/3110.78.32.232 – 10.78.32.23310.78.32.233
11810.78.32.234/3110.78.32.234 – 10.78.32.23510.78.32.235
11910.78.32.236/3110.78.32.236 – 10.78.32.23710.78.32.237
12010.78.32.238/3110.78.32.238 – 10.78.32.23910.78.32.239
12110.78.32.240/3110.78.32.240 – 10.78.32.24110.78.32.241
12210.78.32.242/3110.78.32.242 – 10.78.32.24310.78.32.243
12310.78.32.244/3110.78.32.244 – 10.78.32.24510.78.32.245
12410.78.32.246/3110.78.32.246 – 10.78.32.24710.78.32.247
12510.78.32.248/3110.78.32.248 – 10.78.32.24910.78.32.249
12610.78.32.250/3110.78.32.250 – 10.78.32.25110.78.32.251
12710.78.32.252/3110.78.32.252 – 10.78.32.25310.78.32.253
12810.78.32.254/3110.78.32.254 – 10.78.32.25510.78.32.255
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 →