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)10.78.8.0/24
network10.78.8.0/24
broadcast10.78.8.255
first host10.78.8.1
last host10.78.8.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.78.8.0/24
address00001010.01001110.00001000.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001110.00001000.00000000
broadcast00001010.01001110.00001000.11111111
green = network part, grey = host part
hex0x0a4e0800
decimal172886016
reverse dns0.8.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:800

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.8.0/3110.78.8.0 – 10.78.8.110.78.8.1
210.78.8.2/3110.78.8.2 – 10.78.8.310.78.8.3
310.78.8.4/3110.78.8.4 – 10.78.8.510.78.8.5
410.78.8.6/3110.78.8.6 – 10.78.8.710.78.8.7
510.78.8.8/3110.78.8.8 – 10.78.8.910.78.8.9
610.78.8.10/3110.78.8.10 – 10.78.8.1110.78.8.11
710.78.8.12/3110.78.8.12 – 10.78.8.1310.78.8.13
810.78.8.14/3110.78.8.14 – 10.78.8.1510.78.8.15
910.78.8.16/3110.78.8.16 – 10.78.8.1710.78.8.17
1010.78.8.18/3110.78.8.18 – 10.78.8.1910.78.8.19
1110.78.8.20/3110.78.8.20 – 10.78.8.2110.78.8.21
1210.78.8.22/3110.78.8.22 – 10.78.8.2310.78.8.23
1310.78.8.24/3110.78.8.24 – 10.78.8.2510.78.8.25
1410.78.8.26/3110.78.8.26 – 10.78.8.2710.78.8.27
1510.78.8.28/3110.78.8.28 – 10.78.8.2910.78.8.29
1610.78.8.30/3110.78.8.30 – 10.78.8.3110.78.8.31
1710.78.8.32/3110.78.8.32 – 10.78.8.3310.78.8.33
1810.78.8.34/3110.78.8.34 – 10.78.8.3510.78.8.35
1910.78.8.36/3110.78.8.36 – 10.78.8.3710.78.8.37
2010.78.8.38/3110.78.8.38 – 10.78.8.3910.78.8.39
2110.78.8.40/3110.78.8.40 – 10.78.8.4110.78.8.41
2210.78.8.42/3110.78.8.42 – 10.78.8.4310.78.8.43
2310.78.8.44/3110.78.8.44 – 10.78.8.4510.78.8.45
2410.78.8.46/3110.78.8.46 – 10.78.8.4710.78.8.47
2510.78.8.48/3110.78.8.48 – 10.78.8.4910.78.8.49
2610.78.8.50/3110.78.8.50 – 10.78.8.5110.78.8.51
2710.78.8.52/3110.78.8.52 – 10.78.8.5310.78.8.53
2810.78.8.54/3110.78.8.54 – 10.78.8.5510.78.8.55
2910.78.8.56/3110.78.8.56 – 10.78.8.5710.78.8.57
3010.78.8.58/3110.78.8.58 – 10.78.8.5910.78.8.59
3110.78.8.60/3110.78.8.60 – 10.78.8.6110.78.8.61
3210.78.8.62/3110.78.8.62 – 10.78.8.6310.78.8.63
3310.78.8.64/3110.78.8.64 – 10.78.8.6510.78.8.65
3410.78.8.66/3110.78.8.66 – 10.78.8.6710.78.8.67
3510.78.8.68/3110.78.8.68 – 10.78.8.6910.78.8.69
3610.78.8.70/3110.78.8.70 – 10.78.8.7110.78.8.71
3710.78.8.72/3110.78.8.72 – 10.78.8.7310.78.8.73
3810.78.8.74/3110.78.8.74 – 10.78.8.7510.78.8.75
3910.78.8.76/3110.78.8.76 – 10.78.8.7710.78.8.77
4010.78.8.78/3110.78.8.78 – 10.78.8.7910.78.8.79
4110.78.8.80/3110.78.8.80 – 10.78.8.8110.78.8.81
4210.78.8.82/3110.78.8.82 – 10.78.8.8310.78.8.83
4310.78.8.84/3110.78.8.84 – 10.78.8.8510.78.8.85
4410.78.8.86/3110.78.8.86 – 10.78.8.8710.78.8.87
4510.78.8.88/3110.78.8.88 – 10.78.8.8910.78.8.89
4610.78.8.90/3110.78.8.90 – 10.78.8.9110.78.8.91
4710.78.8.92/3110.78.8.92 – 10.78.8.9310.78.8.93
4810.78.8.94/3110.78.8.94 – 10.78.8.9510.78.8.95
4910.78.8.96/3110.78.8.96 – 10.78.8.9710.78.8.97
5010.78.8.98/3110.78.8.98 – 10.78.8.9910.78.8.99
5110.78.8.100/3110.78.8.100 – 10.78.8.10110.78.8.101
5210.78.8.102/3110.78.8.102 – 10.78.8.10310.78.8.103
5310.78.8.104/3110.78.8.104 – 10.78.8.10510.78.8.105
5410.78.8.106/3110.78.8.106 – 10.78.8.10710.78.8.107
5510.78.8.108/3110.78.8.108 – 10.78.8.10910.78.8.109
5610.78.8.110/3110.78.8.110 – 10.78.8.11110.78.8.111
5710.78.8.112/3110.78.8.112 – 10.78.8.11310.78.8.113
5810.78.8.114/3110.78.8.114 – 10.78.8.11510.78.8.115
5910.78.8.116/3110.78.8.116 – 10.78.8.11710.78.8.117
6010.78.8.118/3110.78.8.118 – 10.78.8.11910.78.8.119
6110.78.8.120/3110.78.8.120 – 10.78.8.12110.78.8.121
6210.78.8.122/3110.78.8.122 – 10.78.8.12310.78.8.123
6310.78.8.124/3110.78.8.124 – 10.78.8.12510.78.8.125
6410.78.8.126/3110.78.8.126 – 10.78.8.12710.78.8.127
6510.78.8.128/3110.78.8.128 – 10.78.8.12910.78.8.129
6610.78.8.130/3110.78.8.130 – 10.78.8.13110.78.8.131
6710.78.8.132/3110.78.8.132 – 10.78.8.13310.78.8.133
6810.78.8.134/3110.78.8.134 – 10.78.8.13510.78.8.135
6910.78.8.136/3110.78.8.136 – 10.78.8.13710.78.8.137
7010.78.8.138/3110.78.8.138 – 10.78.8.13910.78.8.139
7110.78.8.140/3110.78.8.140 – 10.78.8.14110.78.8.141
7210.78.8.142/3110.78.8.142 – 10.78.8.14310.78.8.143
7310.78.8.144/3110.78.8.144 – 10.78.8.14510.78.8.145
7410.78.8.146/3110.78.8.146 – 10.78.8.14710.78.8.147
7510.78.8.148/3110.78.8.148 – 10.78.8.14910.78.8.149
7610.78.8.150/3110.78.8.150 – 10.78.8.15110.78.8.151
7710.78.8.152/3110.78.8.152 – 10.78.8.15310.78.8.153
7810.78.8.154/3110.78.8.154 – 10.78.8.15510.78.8.155
7910.78.8.156/3110.78.8.156 – 10.78.8.15710.78.8.157
8010.78.8.158/3110.78.8.158 – 10.78.8.15910.78.8.159
8110.78.8.160/3110.78.8.160 – 10.78.8.16110.78.8.161
8210.78.8.162/3110.78.8.162 – 10.78.8.16310.78.8.163
8310.78.8.164/3110.78.8.164 – 10.78.8.16510.78.8.165
8410.78.8.166/3110.78.8.166 – 10.78.8.16710.78.8.167
8510.78.8.168/3110.78.8.168 – 10.78.8.16910.78.8.169
8610.78.8.170/3110.78.8.170 – 10.78.8.17110.78.8.171
8710.78.8.172/3110.78.8.172 – 10.78.8.17310.78.8.173
8810.78.8.174/3110.78.8.174 – 10.78.8.17510.78.8.175
8910.78.8.176/3110.78.8.176 – 10.78.8.17710.78.8.177
9010.78.8.178/3110.78.8.178 – 10.78.8.17910.78.8.179
9110.78.8.180/3110.78.8.180 – 10.78.8.18110.78.8.181
9210.78.8.182/3110.78.8.182 – 10.78.8.18310.78.8.183
9310.78.8.184/3110.78.8.184 – 10.78.8.18510.78.8.185
9410.78.8.186/3110.78.8.186 – 10.78.8.18710.78.8.187
9510.78.8.188/3110.78.8.188 – 10.78.8.18910.78.8.189
9610.78.8.190/3110.78.8.190 – 10.78.8.19110.78.8.191
9710.78.8.192/3110.78.8.192 – 10.78.8.19310.78.8.193
9810.78.8.194/3110.78.8.194 – 10.78.8.19510.78.8.195
9910.78.8.196/3110.78.8.196 – 10.78.8.19710.78.8.197
10010.78.8.198/3110.78.8.198 – 10.78.8.19910.78.8.199
10110.78.8.200/3110.78.8.200 – 10.78.8.20110.78.8.201
10210.78.8.202/3110.78.8.202 – 10.78.8.20310.78.8.203
10310.78.8.204/3110.78.8.204 – 10.78.8.20510.78.8.205
10410.78.8.206/3110.78.8.206 – 10.78.8.20710.78.8.207
10510.78.8.208/3110.78.8.208 – 10.78.8.20910.78.8.209
10610.78.8.210/3110.78.8.210 – 10.78.8.21110.78.8.211
10710.78.8.212/3110.78.8.212 – 10.78.8.21310.78.8.213
10810.78.8.214/3110.78.8.214 – 10.78.8.21510.78.8.215
10910.78.8.216/3110.78.8.216 – 10.78.8.21710.78.8.217
11010.78.8.218/3110.78.8.218 – 10.78.8.21910.78.8.219
11110.78.8.220/3110.78.8.220 – 10.78.8.22110.78.8.221
11210.78.8.222/3110.78.8.222 – 10.78.8.22310.78.8.223
11310.78.8.224/3110.78.8.224 – 10.78.8.22510.78.8.225
11410.78.8.226/3110.78.8.226 – 10.78.8.22710.78.8.227
11510.78.8.228/3110.78.8.228 – 10.78.8.22910.78.8.229
11610.78.8.230/3110.78.8.230 – 10.78.8.23110.78.8.231
11710.78.8.232/3110.78.8.232 – 10.78.8.23310.78.8.233
11810.78.8.234/3110.78.8.234 – 10.78.8.23510.78.8.235
11910.78.8.236/3110.78.8.236 – 10.78.8.23710.78.8.237
12010.78.8.238/3110.78.8.238 – 10.78.8.23910.78.8.239
12110.78.8.240/3110.78.8.240 – 10.78.8.24110.78.8.241
12210.78.8.242/3110.78.8.242 – 10.78.8.24310.78.8.243
12310.78.8.244/3110.78.8.244 – 10.78.8.24510.78.8.245
12410.78.8.246/3110.78.8.246 – 10.78.8.24710.78.8.247
12510.78.8.248/3110.78.8.248 – 10.78.8.24910.78.8.249
12610.78.8.250/3110.78.8.250 – 10.78.8.25110.78.8.251
12710.78.8.252/3110.78.8.252 – 10.78.8.25310.78.8.253
12810.78.8.254/3110.78.8.254 – 10.78.8.25510.78.8.255
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 →