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)10.78.7.0/24
network10.78.7.0/24
broadcast10.78.7.255
first host10.78.7.1
last host10.78.7.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.78.7.0/24
address00001010.01001110.00000111.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001110.00000111.00000000
broadcast00001010.01001110.00000111.11111111
green = network part, grey = host part
hex0x0a4e0700
decimal172885760
reverse dns0.7.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:700

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.7.0/3110.78.7.0 – 10.78.7.110.78.7.1
210.78.7.2/3110.78.7.2 – 10.78.7.310.78.7.3
310.78.7.4/3110.78.7.4 – 10.78.7.510.78.7.5
410.78.7.6/3110.78.7.6 – 10.78.7.710.78.7.7
510.78.7.8/3110.78.7.8 – 10.78.7.910.78.7.9
610.78.7.10/3110.78.7.10 – 10.78.7.1110.78.7.11
710.78.7.12/3110.78.7.12 – 10.78.7.1310.78.7.13
810.78.7.14/3110.78.7.14 – 10.78.7.1510.78.7.15
910.78.7.16/3110.78.7.16 – 10.78.7.1710.78.7.17
1010.78.7.18/3110.78.7.18 – 10.78.7.1910.78.7.19
1110.78.7.20/3110.78.7.20 – 10.78.7.2110.78.7.21
1210.78.7.22/3110.78.7.22 – 10.78.7.2310.78.7.23
1310.78.7.24/3110.78.7.24 – 10.78.7.2510.78.7.25
1410.78.7.26/3110.78.7.26 – 10.78.7.2710.78.7.27
1510.78.7.28/3110.78.7.28 – 10.78.7.2910.78.7.29
1610.78.7.30/3110.78.7.30 – 10.78.7.3110.78.7.31
1710.78.7.32/3110.78.7.32 – 10.78.7.3310.78.7.33
1810.78.7.34/3110.78.7.34 – 10.78.7.3510.78.7.35
1910.78.7.36/3110.78.7.36 – 10.78.7.3710.78.7.37
2010.78.7.38/3110.78.7.38 – 10.78.7.3910.78.7.39
2110.78.7.40/3110.78.7.40 – 10.78.7.4110.78.7.41
2210.78.7.42/3110.78.7.42 – 10.78.7.4310.78.7.43
2310.78.7.44/3110.78.7.44 – 10.78.7.4510.78.7.45
2410.78.7.46/3110.78.7.46 – 10.78.7.4710.78.7.47
2510.78.7.48/3110.78.7.48 – 10.78.7.4910.78.7.49
2610.78.7.50/3110.78.7.50 – 10.78.7.5110.78.7.51
2710.78.7.52/3110.78.7.52 – 10.78.7.5310.78.7.53
2810.78.7.54/3110.78.7.54 – 10.78.7.5510.78.7.55
2910.78.7.56/3110.78.7.56 – 10.78.7.5710.78.7.57
3010.78.7.58/3110.78.7.58 – 10.78.7.5910.78.7.59
3110.78.7.60/3110.78.7.60 – 10.78.7.6110.78.7.61
3210.78.7.62/3110.78.7.62 – 10.78.7.6310.78.7.63
3310.78.7.64/3110.78.7.64 – 10.78.7.6510.78.7.65
3410.78.7.66/3110.78.7.66 – 10.78.7.6710.78.7.67
3510.78.7.68/3110.78.7.68 – 10.78.7.6910.78.7.69
3610.78.7.70/3110.78.7.70 – 10.78.7.7110.78.7.71
3710.78.7.72/3110.78.7.72 – 10.78.7.7310.78.7.73
3810.78.7.74/3110.78.7.74 – 10.78.7.7510.78.7.75
3910.78.7.76/3110.78.7.76 – 10.78.7.7710.78.7.77
4010.78.7.78/3110.78.7.78 – 10.78.7.7910.78.7.79
4110.78.7.80/3110.78.7.80 – 10.78.7.8110.78.7.81
4210.78.7.82/3110.78.7.82 – 10.78.7.8310.78.7.83
4310.78.7.84/3110.78.7.84 – 10.78.7.8510.78.7.85
4410.78.7.86/3110.78.7.86 – 10.78.7.8710.78.7.87
4510.78.7.88/3110.78.7.88 – 10.78.7.8910.78.7.89
4610.78.7.90/3110.78.7.90 – 10.78.7.9110.78.7.91
4710.78.7.92/3110.78.7.92 – 10.78.7.9310.78.7.93
4810.78.7.94/3110.78.7.94 – 10.78.7.9510.78.7.95
4910.78.7.96/3110.78.7.96 – 10.78.7.9710.78.7.97
5010.78.7.98/3110.78.7.98 – 10.78.7.9910.78.7.99
5110.78.7.100/3110.78.7.100 – 10.78.7.10110.78.7.101
5210.78.7.102/3110.78.7.102 – 10.78.7.10310.78.7.103
5310.78.7.104/3110.78.7.104 – 10.78.7.10510.78.7.105
5410.78.7.106/3110.78.7.106 – 10.78.7.10710.78.7.107
5510.78.7.108/3110.78.7.108 – 10.78.7.10910.78.7.109
5610.78.7.110/3110.78.7.110 – 10.78.7.11110.78.7.111
5710.78.7.112/3110.78.7.112 – 10.78.7.11310.78.7.113
5810.78.7.114/3110.78.7.114 – 10.78.7.11510.78.7.115
5910.78.7.116/3110.78.7.116 – 10.78.7.11710.78.7.117
6010.78.7.118/3110.78.7.118 – 10.78.7.11910.78.7.119
6110.78.7.120/3110.78.7.120 – 10.78.7.12110.78.7.121
6210.78.7.122/3110.78.7.122 – 10.78.7.12310.78.7.123
6310.78.7.124/3110.78.7.124 – 10.78.7.12510.78.7.125
6410.78.7.126/3110.78.7.126 – 10.78.7.12710.78.7.127
6510.78.7.128/3110.78.7.128 – 10.78.7.12910.78.7.129
6610.78.7.130/3110.78.7.130 – 10.78.7.13110.78.7.131
6710.78.7.132/3110.78.7.132 – 10.78.7.13310.78.7.133
6810.78.7.134/3110.78.7.134 – 10.78.7.13510.78.7.135
6910.78.7.136/3110.78.7.136 – 10.78.7.13710.78.7.137
7010.78.7.138/3110.78.7.138 – 10.78.7.13910.78.7.139
7110.78.7.140/3110.78.7.140 – 10.78.7.14110.78.7.141
7210.78.7.142/3110.78.7.142 – 10.78.7.14310.78.7.143
7310.78.7.144/3110.78.7.144 – 10.78.7.14510.78.7.145
7410.78.7.146/3110.78.7.146 – 10.78.7.14710.78.7.147
7510.78.7.148/3110.78.7.148 – 10.78.7.14910.78.7.149
7610.78.7.150/3110.78.7.150 – 10.78.7.15110.78.7.151
7710.78.7.152/3110.78.7.152 – 10.78.7.15310.78.7.153
7810.78.7.154/3110.78.7.154 – 10.78.7.15510.78.7.155
7910.78.7.156/3110.78.7.156 – 10.78.7.15710.78.7.157
8010.78.7.158/3110.78.7.158 – 10.78.7.15910.78.7.159
8110.78.7.160/3110.78.7.160 – 10.78.7.16110.78.7.161
8210.78.7.162/3110.78.7.162 – 10.78.7.16310.78.7.163
8310.78.7.164/3110.78.7.164 – 10.78.7.16510.78.7.165
8410.78.7.166/3110.78.7.166 – 10.78.7.16710.78.7.167
8510.78.7.168/3110.78.7.168 – 10.78.7.16910.78.7.169
8610.78.7.170/3110.78.7.170 – 10.78.7.17110.78.7.171
8710.78.7.172/3110.78.7.172 – 10.78.7.17310.78.7.173
8810.78.7.174/3110.78.7.174 – 10.78.7.17510.78.7.175
8910.78.7.176/3110.78.7.176 – 10.78.7.17710.78.7.177
9010.78.7.178/3110.78.7.178 – 10.78.7.17910.78.7.179
9110.78.7.180/3110.78.7.180 – 10.78.7.18110.78.7.181
9210.78.7.182/3110.78.7.182 – 10.78.7.18310.78.7.183
9310.78.7.184/3110.78.7.184 – 10.78.7.18510.78.7.185
9410.78.7.186/3110.78.7.186 – 10.78.7.18710.78.7.187
9510.78.7.188/3110.78.7.188 – 10.78.7.18910.78.7.189
9610.78.7.190/3110.78.7.190 – 10.78.7.19110.78.7.191
9710.78.7.192/3110.78.7.192 – 10.78.7.19310.78.7.193
9810.78.7.194/3110.78.7.194 – 10.78.7.19510.78.7.195
9910.78.7.196/3110.78.7.196 – 10.78.7.19710.78.7.197
10010.78.7.198/3110.78.7.198 – 10.78.7.19910.78.7.199
10110.78.7.200/3110.78.7.200 – 10.78.7.20110.78.7.201
10210.78.7.202/3110.78.7.202 – 10.78.7.20310.78.7.203
10310.78.7.204/3110.78.7.204 – 10.78.7.20510.78.7.205
10410.78.7.206/3110.78.7.206 – 10.78.7.20710.78.7.207
10510.78.7.208/3110.78.7.208 – 10.78.7.20910.78.7.209
10610.78.7.210/3110.78.7.210 – 10.78.7.21110.78.7.211
10710.78.7.212/3110.78.7.212 – 10.78.7.21310.78.7.213
10810.78.7.214/3110.78.7.214 – 10.78.7.21510.78.7.215
10910.78.7.216/3110.78.7.216 – 10.78.7.21710.78.7.217
11010.78.7.218/3110.78.7.218 – 10.78.7.21910.78.7.219
11110.78.7.220/3110.78.7.220 – 10.78.7.22110.78.7.221
11210.78.7.222/3110.78.7.222 – 10.78.7.22310.78.7.223
11310.78.7.224/3110.78.7.224 – 10.78.7.22510.78.7.225
11410.78.7.226/3110.78.7.226 – 10.78.7.22710.78.7.227
11510.78.7.228/3110.78.7.228 – 10.78.7.22910.78.7.229
11610.78.7.230/3110.78.7.230 – 10.78.7.23110.78.7.231
11710.78.7.232/3110.78.7.232 – 10.78.7.23310.78.7.233
11810.78.7.234/3110.78.7.234 – 10.78.7.23510.78.7.235
11910.78.7.236/3110.78.7.236 – 10.78.7.23710.78.7.237
12010.78.7.238/3110.78.7.238 – 10.78.7.23910.78.7.239
12110.78.7.240/3110.78.7.240 – 10.78.7.24110.78.7.241
12210.78.7.242/3110.78.7.242 – 10.78.7.24310.78.7.243
12310.78.7.244/3110.78.7.244 – 10.78.7.24510.78.7.245
12410.78.7.246/3110.78.7.246 – 10.78.7.24710.78.7.247
12510.78.7.248/3110.78.7.248 – 10.78.7.24910.78.7.249
12610.78.7.250/3110.78.7.250 – 10.78.7.25110.78.7.251
12710.78.7.252/3110.78.7.252 – 10.78.7.25310.78.7.253
12810.78.7.254/3110.78.7.254 – 10.78.7.25510.78.7.255
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 →