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)10.78.131.0/24
network10.78.131.0/24
broadcast10.78.131.255
first host10.78.131.1
last host10.78.131.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.78.131.0/24
address00001010.01001110.10000011.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001110.10000011.00000000
broadcast00001010.01001110.10000011.11111111
green = network part, grey = host part
hex0x0a4e8300
decimal172917504
reverse dns0.131.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:8300

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.131.0/3110.78.131.0 – 10.78.131.110.78.131.1
210.78.131.2/3110.78.131.2 – 10.78.131.310.78.131.3
310.78.131.4/3110.78.131.4 – 10.78.131.510.78.131.5
410.78.131.6/3110.78.131.6 – 10.78.131.710.78.131.7
510.78.131.8/3110.78.131.8 – 10.78.131.910.78.131.9
610.78.131.10/3110.78.131.10 – 10.78.131.1110.78.131.11
710.78.131.12/3110.78.131.12 – 10.78.131.1310.78.131.13
810.78.131.14/3110.78.131.14 – 10.78.131.1510.78.131.15
910.78.131.16/3110.78.131.16 – 10.78.131.1710.78.131.17
1010.78.131.18/3110.78.131.18 – 10.78.131.1910.78.131.19
1110.78.131.20/3110.78.131.20 – 10.78.131.2110.78.131.21
1210.78.131.22/3110.78.131.22 – 10.78.131.2310.78.131.23
1310.78.131.24/3110.78.131.24 – 10.78.131.2510.78.131.25
1410.78.131.26/3110.78.131.26 – 10.78.131.2710.78.131.27
1510.78.131.28/3110.78.131.28 – 10.78.131.2910.78.131.29
1610.78.131.30/3110.78.131.30 – 10.78.131.3110.78.131.31
1710.78.131.32/3110.78.131.32 – 10.78.131.3310.78.131.33
1810.78.131.34/3110.78.131.34 – 10.78.131.3510.78.131.35
1910.78.131.36/3110.78.131.36 – 10.78.131.3710.78.131.37
2010.78.131.38/3110.78.131.38 – 10.78.131.3910.78.131.39
2110.78.131.40/3110.78.131.40 – 10.78.131.4110.78.131.41
2210.78.131.42/3110.78.131.42 – 10.78.131.4310.78.131.43
2310.78.131.44/3110.78.131.44 – 10.78.131.4510.78.131.45
2410.78.131.46/3110.78.131.46 – 10.78.131.4710.78.131.47
2510.78.131.48/3110.78.131.48 – 10.78.131.4910.78.131.49
2610.78.131.50/3110.78.131.50 – 10.78.131.5110.78.131.51
2710.78.131.52/3110.78.131.52 – 10.78.131.5310.78.131.53
2810.78.131.54/3110.78.131.54 – 10.78.131.5510.78.131.55
2910.78.131.56/3110.78.131.56 – 10.78.131.5710.78.131.57
3010.78.131.58/3110.78.131.58 – 10.78.131.5910.78.131.59
3110.78.131.60/3110.78.131.60 – 10.78.131.6110.78.131.61
3210.78.131.62/3110.78.131.62 – 10.78.131.6310.78.131.63
3310.78.131.64/3110.78.131.64 – 10.78.131.6510.78.131.65
3410.78.131.66/3110.78.131.66 – 10.78.131.6710.78.131.67
3510.78.131.68/3110.78.131.68 – 10.78.131.6910.78.131.69
3610.78.131.70/3110.78.131.70 – 10.78.131.7110.78.131.71
3710.78.131.72/3110.78.131.72 – 10.78.131.7310.78.131.73
3810.78.131.74/3110.78.131.74 – 10.78.131.7510.78.131.75
3910.78.131.76/3110.78.131.76 – 10.78.131.7710.78.131.77
4010.78.131.78/3110.78.131.78 – 10.78.131.7910.78.131.79
4110.78.131.80/3110.78.131.80 – 10.78.131.8110.78.131.81
4210.78.131.82/3110.78.131.82 – 10.78.131.8310.78.131.83
4310.78.131.84/3110.78.131.84 – 10.78.131.8510.78.131.85
4410.78.131.86/3110.78.131.86 – 10.78.131.8710.78.131.87
4510.78.131.88/3110.78.131.88 – 10.78.131.8910.78.131.89
4610.78.131.90/3110.78.131.90 – 10.78.131.9110.78.131.91
4710.78.131.92/3110.78.131.92 – 10.78.131.9310.78.131.93
4810.78.131.94/3110.78.131.94 – 10.78.131.9510.78.131.95
4910.78.131.96/3110.78.131.96 – 10.78.131.9710.78.131.97
5010.78.131.98/3110.78.131.98 – 10.78.131.9910.78.131.99
5110.78.131.100/3110.78.131.100 – 10.78.131.10110.78.131.101
5210.78.131.102/3110.78.131.102 – 10.78.131.10310.78.131.103
5310.78.131.104/3110.78.131.104 – 10.78.131.10510.78.131.105
5410.78.131.106/3110.78.131.106 – 10.78.131.10710.78.131.107
5510.78.131.108/3110.78.131.108 – 10.78.131.10910.78.131.109
5610.78.131.110/3110.78.131.110 – 10.78.131.11110.78.131.111
5710.78.131.112/3110.78.131.112 – 10.78.131.11310.78.131.113
5810.78.131.114/3110.78.131.114 – 10.78.131.11510.78.131.115
5910.78.131.116/3110.78.131.116 – 10.78.131.11710.78.131.117
6010.78.131.118/3110.78.131.118 – 10.78.131.11910.78.131.119
6110.78.131.120/3110.78.131.120 – 10.78.131.12110.78.131.121
6210.78.131.122/3110.78.131.122 – 10.78.131.12310.78.131.123
6310.78.131.124/3110.78.131.124 – 10.78.131.12510.78.131.125
6410.78.131.126/3110.78.131.126 – 10.78.131.12710.78.131.127
6510.78.131.128/3110.78.131.128 – 10.78.131.12910.78.131.129
6610.78.131.130/3110.78.131.130 – 10.78.131.13110.78.131.131
6710.78.131.132/3110.78.131.132 – 10.78.131.13310.78.131.133
6810.78.131.134/3110.78.131.134 – 10.78.131.13510.78.131.135
6910.78.131.136/3110.78.131.136 – 10.78.131.13710.78.131.137
7010.78.131.138/3110.78.131.138 – 10.78.131.13910.78.131.139
7110.78.131.140/3110.78.131.140 – 10.78.131.14110.78.131.141
7210.78.131.142/3110.78.131.142 – 10.78.131.14310.78.131.143
7310.78.131.144/3110.78.131.144 – 10.78.131.14510.78.131.145
7410.78.131.146/3110.78.131.146 – 10.78.131.14710.78.131.147
7510.78.131.148/3110.78.131.148 – 10.78.131.14910.78.131.149
7610.78.131.150/3110.78.131.150 – 10.78.131.15110.78.131.151
7710.78.131.152/3110.78.131.152 – 10.78.131.15310.78.131.153
7810.78.131.154/3110.78.131.154 – 10.78.131.15510.78.131.155
7910.78.131.156/3110.78.131.156 – 10.78.131.15710.78.131.157
8010.78.131.158/3110.78.131.158 – 10.78.131.15910.78.131.159
8110.78.131.160/3110.78.131.160 – 10.78.131.16110.78.131.161
8210.78.131.162/3110.78.131.162 – 10.78.131.16310.78.131.163
8310.78.131.164/3110.78.131.164 – 10.78.131.16510.78.131.165
8410.78.131.166/3110.78.131.166 – 10.78.131.16710.78.131.167
8510.78.131.168/3110.78.131.168 – 10.78.131.16910.78.131.169
8610.78.131.170/3110.78.131.170 – 10.78.131.17110.78.131.171
8710.78.131.172/3110.78.131.172 – 10.78.131.17310.78.131.173
8810.78.131.174/3110.78.131.174 – 10.78.131.17510.78.131.175
8910.78.131.176/3110.78.131.176 – 10.78.131.17710.78.131.177
9010.78.131.178/3110.78.131.178 – 10.78.131.17910.78.131.179
9110.78.131.180/3110.78.131.180 – 10.78.131.18110.78.131.181
9210.78.131.182/3110.78.131.182 – 10.78.131.18310.78.131.183
9310.78.131.184/3110.78.131.184 – 10.78.131.18510.78.131.185
9410.78.131.186/3110.78.131.186 – 10.78.131.18710.78.131.187
9510.78.131.188/3110.78.131.188 – 10.78.131.18910.78.131.189
9610.78.131.190/3110.78.131.190 – 10.78.131.19110.78.131.191
9710.78.131.192/3110.78.131.192 – 10.78.131.19310.78.131.193
9810.78.131.194/3110.78.131.194 – 10.78.131.19510.78.131.195
9910.78.131.196/3110.78.131.196 – 10.78.131.19710.78.131.197
10010.78.131.198/3110.78.131.198 – 10.78.131.19910.78.131.199
10110.78.131.200/3110.78.131.200 – 10.78.131.20110.78.131.201
10210.78.131.202/3110.78.131.202 – 10.78.131.20310.78.131.203
10310.78.131.204/3110.78.131.204 – 10.78.131.20510.78.131.205
10410.78.131.206/3110.78.131.206 – 10.78.131.20710.78.131.207
10510.78.131.208/3110.78.131.208 – 10.78.131.20910.78.131.209
10610.78.131.210/3110.78.131.210 – 10.78.131.21110.78.131.211
10710.78.131.212/3110.78.131.212 – 10.78.131.21310.78.131.213
10810.78.131.214/3110.78.131.214 – 10.78.131.21510.78.131.215
10910.78.131.216/3110.78.131.216 – 10.78.131.21710.78.131.217
11010.78.131.218/3110.78.131.218 – 10.78.131.21910.78.131.219
11110.78.131.220/3110.78.131.220 – 10.78.131.22110.78.131.221
11210.78.131.222/3110.78.131.222 – 10.78.131.22310.78.131.223
11310.78.131.224/3110.78.131.224 – 10.78.131.22510.78.131.225
11410.78.131.226/3110.78.131.226 – 10.78.131.22710.78.131.227
11510.78.131.228/3110.78.131.228 – 10.78.131.22910.78.131.229
11610.78.131.230/3110.78.131.230 – 10.78.131.23110.78.131.231
11710.78.131.232/3110.78.131.232 – 10.78.131.23310.78.131.233
11810.78.131.234/3110.78.131.234 – 10.78.131.23510.78.131.235
11910.78.131.236/3110.78.131.236 – 10.78.131.23710.78.131.237
12010.78.131.238/3110.78.131.238 – 10.78.131.23910.78.131.239
12110.78.131.240/3110.78.131.240 – 10.78.131.24110.78.131.241
12210.78.131.242/3110.78.131.242 – 10.78.131.24310.78.131.243
12310.78.131.244/3110.78.131.244 – 10.78.131.24510.78.131.245
12410.78.131.246/3110.78.131.246 – 10.78.131.24710.78.131.247
12510.78.131.248/3110.78.131.248 – 10.78.131.24910.78.131.249
12610.78.131.250/3110.78.131.250 – 10.78.131.25110.78.131.251
12710.78.131.252/3110.78.131.252 – 10.78.131.25310.78.131.253
12810.78.131.254/3110.78.131.254 – 10.78.131.25510.78.131.255
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 →