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)10.78.10.0/24
network10.78.10.0/24
broadcast10.78.10.255
first host10.78.10.1
last host10.78.10.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.78.10.0/24
address00001010.01001110.00001010.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001110.00001010.00000000
broadcast00001010.01001110.00001010.11111111
green = network part, grey = host part
hex0x0a4e0a00
decimal172886528
reverse dns0.10.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:a00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.10.0/3110.78.10.0 – 10.78.10.110.78.10.1
210.78.10.2/3110.78.10.2 – 10.78.10.310.78.10.3
310.78.10.4/3110.78.10.4 – 10.78.10.510.78.10.5
410.78.10.6/3110.78.10.6 – 10.78.10.710.78.10.7
510.78.10.8/3110.78.10.8 – 10.78.10.910.78.10.9
610.78.10.10/3110.78.10.10 – 10.78.10.1110.78.10.11
710.78.10.12/3110.78.10.12 – 10.78.10.1310.78.10.13
810.78.10.14/3110.78.10.14 – 10.78.10.1510.78.10.15
910.78.10.16/3110.78.10.16 – 10.78.10.1710.78.10.17
1010.78.10.18/3110.78.10.18 – 10.78.10.1910.78.10.19
1110.78.10.20/3110.78.10.20 – 10.78.10.2110.78.10.21
1210.78.10.22/3110.78.10.22 – 10.78.10.2310.78.10.23
1310.78.10.24/3110.78.10.24 – 10.78.10.2510.78.10.25
1410.78.10.26/3110.78.10.26 – 10.78.10.2710.78.10.27
1510.78.10.28/3110.78.10.28 – 10.78.10.2910.78.10.29
1610.78.10.30/3110.78.10.30 – 10.78.10.3110.78.10.31
1710.78.10.32/3110.78.10.32 – 10.78.10.3310.78.10.33
1810.78.10.34/3110.78.10.34 – 10.78.10.3510.78.10.35
1910.78.10.36/3110.78.10.36 – 10.78.10.3710.78.10.37
2010.78.10.38/3110.78.10.38 – 10.78.10.3910.78.10.39
2110.78.10.40/3110.78.10.40 – 10.78.10.4110.78.10.41
2210.78.10.42/3110.78.10.42 – 10.78.10.4310.78.10.43
2310.78.10.44/3110.78.10.44 – 10.78.10.4510.78.10.45
2410.78.10.46/3110.78.10.46 – 10.78.10.4710.78.10.47
2510.78.10.48/3110.78.10.48 – 10.78.10.4910.78.10.49
2610.78.10.50/3110.78.10.50 – 10.78.10.5110.78.10.51
2710.78.10.52/3110.78.10.52 – 10.78.10.5310.78.10.53
2810.78.10.54/3110.78.10.54 – 10.78.10.5510.78.10.55
2910.78.10.56/3110.78.10.56 – 10.78.10.5710.78.10.57
3010.78.10.58/3110.78.10.58 – 10.78.10.5910.78.10.59
3110.78.10.60/3110.78.10.60 – 10.78.10.6110.78.10.61
3210.78.10.62/3110.78.10.62 – 10.78.10.6310.78.10.63
3310.78.10.64/3110.78.10.64 – 10.78.10.6510.78.10.65
3410.78.10.66/3110.78.10.66 – 10.78.10.6710.78.10.67
3510.78.10.68/3110.78.10.68 – 10.78.10.6910.78.10.69
3610.78.10.70/3110.78.10.70 – 10.78.10.7110.78.10.71
3710.78.10.72/3110.78.10.72 – 10.78.10.7310.78.10.73
3810.78.10.74/3110.78.10.74 – 10.78.10.7510.78.10.75
3910.78.10.76/3110.78.10.76 – 10.78.10.7710.78.10.77
4010.78.10.78/3110.78.10.78 – 10.78.10.7910.78.10.79
4110.78.10.80/3110.78.10.80 – 10.78.10.8110.78.10.81
4210.78.10.82/3110.78.10.82 – 10.78.10.8310.78.10.83
4310.78.10.84/3110.78.10.84 – 10.78.10.8510.78.10.85
4410.78.10.86/3110.78.10.86 – 10.78.10.8710.78.10.87
4510.78.10.88/3110.78.10.88 – 10.78.10.8910.78.10.89
4610.78.10.90/3110.78.10.90 – 10.78.10.9110.78.10.91
4710.78.10.92/3110.78.10.92 – 10.78.10.9310.78.10.93
4810.78.10.94/3110.78.10.94 – 10.78.10.9510.78.10.95
4910.78.10.96/3110.78.10.96 – 10.78.10.9710.78.10.97
5010.78.10.98/3110.78.10.98 – 10.78.10.9910.78.10.99
5110.78.10.100/3110.78.10.100 – 10.78.10.10110.78.10.101
5210.78.10.102/3110.78.10.102 – 10.78.10.10310.78.10.103
5310.78.10.104/3110.78.10.104 – 10.78.10.10510.78.10.105
5410.78.10.106/3110.78.10.106 – 10.78.10.10710.78.10.107
5510.78.10.108/3110.78.10.108 – 10.78.10.10910.78.10.109
5610.78.10.110/3110.78.10.110 – 10.78.10.11110.78.10.111
5710.78.10.112/3110.78.10.112 – 10.78.10.11310.78.10.113
5810.78.10.114/3110.78.10.114 – 10.78.10.11510.78.10.115
5910.78.10.116/3110.78.10.116 – 10.78.10.11710.78.10.117
6010.78.10.118/3110.78.10.118 – 10.78.10.11910.78.10.119
6110.78.10.120/3110.78.10.120 – 10.78.10.12110.78.10.121
6210.78.10.122/3110.78.10.122 – 10.78.10.12310.78.10.123
6310.78.10.124/3110.78.10.124 – 10.78.10.12510.78.10.125
6410.78.10.126/3110.78.10.126 – 10.78.10.12710.78.10.127
6510.78.10.128/3110.78.10.128 – 10.78.10.12910.78.10.129
6610.78.10.130/3110.78.10.130 – 10.78.10.13110.78.10.131
6710.78.10.132/3110.78.10.132 – 10.78.10.13310.78.10.133
6810.78.10.134/3110.78.10.134 – 10.78.10.13510.78.10.135
6910.78.10.136/3110.78.10.136 – 10.78.10.13710.78.10.137
7010.78.10.138/3110.78.10.138 – 10.78.10.13910.78.10.139
7110.78.10.140/3110.78.10.140 – 10.78.10.14110.78.10.141
7210.78.10.142/3110.78.10.142 – 10.78.10.14310.78.10.143
7310.78.10.144/3110.78.10.144 – 10.78.10.14510.78.10.145
7410.78.10.146/3110.78.10.146 – 10.78.10.14710.78.10.147
7510.78.10.148/3110.78.10.148 – 10.78.10.14910.78.10.149
7610.78.10.150/3110.78.10.150 – 10.78.10.15110.78.10.151
7710.78.10.152/3110.78.10.152 – 10.78.10.15310.78.10.153
7810.78.10.154/3110.78.10.154 – 10.78.10.15510.78.10.155
7910.78.10.156/3110.78.10.156 – 10.78.10.15710.78.10.157
8010.78.10.158/3110.78.10.158 – 10.78.10.15910.78.10.159
8110.78.10.160/3110.78.10.160 – 10.78.10.16110.78.10.161
8210.78.10.162/3110.78.10.162 – 10.78.10.16310.78.10.163
8310.78.10.164/3110.78.10.164 – 10.78.10.16510.78.10.165
8410.78.10.166/3110.78.10.166 – 10.78.10.16710.78.10.167
8510.78.10.168/3110.78.10.168 – 10.78.10.16910.78.10.169
8610.78.10.170/3110.78.10.170 – 10.78.10.17110.78.10.171
8710.78.10.172/3110.78.10.172 – 10.78.10.17310.78.10.173
8810.78.10.174/3110.78.10.174 – 10.78.10.17510.78.10.175
8910.78.10.176/3110.78.10.176 – 10.78.10.17710.78.10.177
9010.78.10.178/3110.78.10.178 – 10.78.10.17910.78.10.179
9110.78.10.180/3110.78.10.180 – 10.78.10.18110.78.10.181
9210.78.10.182/3110.78.10.182 – 10.78.10.18310.78.10.183
9310.78.10.184/3110.78.10.184 – 10.78.10.18510.78.10.185
9410.78.10.186/3110.78.10.186 – 10.78.10.18710.78.10.187
9510.78.10.188/3110.78.10.188 – 10.78.10.18910.78.10.189
9610.78.10.190/3110.78.10.190 – 10.78.10.19110.78.10.191
9710.78.10.192/3110.78.10.192 – 10.78.10.19310.78.10.193
9810.78.10.194/3110.78.10.194 – 10.78.10.19510.78.10.195
9910.78.10.196/3110.78.10.196 – 10.78.10.19710.78.10.197
10010.78.10.198/3110.78.10.198 – 10.78.10.19910.78.10.199
10110.78.10.200/3110.78.10.200 – 10.78.10.20110.78.10.201
10210.78.10.202/3110.78.10.202 – 10.78.10.20310.78.10.203
10310.78.10.204/3110.78.10.204 – 10.78.10.20510.78.10.205
10410.78.10.206/3110.78.10.206 – 10.78.10.20710.78.10.207
10510.78.10.208/3110.78.10.208 – 10.78.10.20910.78.10.209
10610.78.10.210/3110.78.10.210 – 10.78.10.21110.78.10.211
10710.78.10.212/3110.78.10.212 – 10.78.10.21310.78.10.213
10810.78.10.214/3110.78.10.214 – 10.78.10.21510.78.10.215
10910.78.10.216/3110.78.10.216 – 10.78.10.21710.78.10.217
11010.78.10.218/3110.78.10.218 – 10.78.10.21910.78.10.219
11110.78.10.220/3110.78.10.220 – 10.78.10.22110.78.10.221
11210.78.10.222/3110.78.10.222 – 10.78.10.22310.78.10.223
11310.78.10.224/3110.78.10.224 – 10.78.10.22510.78.10.225
11410.78.10.226/3110.78.10.226 – 10.78.10.22710.78.10.227
11510.78.10.228/3110.78.10.228 – 10.78.10.22910.78.10.229
11610.78.10.230/3110.78.10.230 – 10.78.10.23110.78.10.231
11710.78.10.232/3110.78.10.232 – 10.78.10.23310.78.10.233
11810.78.10.234/3110.78.10.234 – 10.78.10.23510.78.10.235
11910.78.10.236/3110.78.10.236 – 10.78.10.23710.78.10.237
12010.78.10.238/3110.78.10.238 – 10.78.10.23910.78.10.239
12110.78.10.240/3110.78.10.240 – 10.78.10.24110.78.10.241
12210.78.10.242/3110.78.10.242 – 10.78.10.24310.78.10.243
12310.78.10.244/3110.78.10.244 – 10.78.10.24510.78.10.245
12410.78.10.246/3110.78.10.246 – 10.78.10.24710.78.10.247
12510.78.10.248/3110.78.10.248 – 10.78.10.24910.78.10.249
12610.78.10.250/3110.78.10.250 – 10.78.10.25110.78.10.251
12710.78.10.252/3110.78.10.252 – 10.78.10.25310.78.10.253
12810.78.10.254/3110.78.10.254 – 10.78.10.25510.78.10.255
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 →