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)10.78.29.0/24
network10.78.29.0/24
broadcast10.78.29.255
first host10.78.29.1
last host10.78.29.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.78.29.0/24
address00001010.01001110.00011101.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001110.00011101.00000000
broadcast00001010.01001110.00011101.11111111
green = network part, grey = host part
hex0x0a4e1d00
decimal172891392
reverse dns0.29.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:1d00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.29.0/3110.78.29.0 – 10.78.29.110.78.29.1
210.78.29.2/3110.78.29.2 – 10.78.29.310.78.29.3
310.78.29.4/3110.78.29.4 – 10.78.29.510.78.29.5
410.78.29.6/3110.78.29.6 – 10.78.29.710.78.29.7
510.78.29.8/3110.78.29.8 – 10.78.29.910.78.29.9
610.78.29.10/3110.78.29.10 – 10.78.29.1110.78.29.11
710.78.29.12/3110.78.29.12 – 10.78.29.1310.78.29.13
810.78.29.14/3110.78.29.14 – 10.78.29.1510.78.29.15
910.78.29.16/3110.78.29.16 – 10.78.29.1710.78.29.17
1010.78.29.18/3110.78.29.18 – 10.78.29.1910.78.29.19
1110.78.29.20/3110.78.29.20 – 10.78.29.2110.78.29.21
1210.78.29.22/3110.78.29.22 – 10.78.29.2310.78.29.23
1310.78.29.24/3110.78.29.24 – 10.78.29.2510.78.29.25
1410.78.29.26/3110.78.29.26 – 10.78.29.2710.78.29.27
1510.78.29.28/3110.78.29.28 – 10.78.29.2910.78.29.29
1610.78.29.30/3110.78.29.30 – 10.78.29.3110.78.29.31
1710.78.29.32/3110.78.29.32 – 10.78.29.3310.78.29.33
1810.78.29.34/3110.78.29.34 – 10.78.29.3510.78.29.35
1910.78.29.36/3110.78.29.36 – 10.78.29.3710.78.29.37
2010.78.29.38/3110.78.29.38 – 10.78.29.3910.78.29.39
2110.78.29.40/3110.78.29.40 – 10.78.29.4110.78.29.41
2210.78.29.42/3110.78.29.42 – 10.78.29.4310.78.29.43
2310.78.29.44/3110.78.29.44 – 10.78.29.4510.78.29.45
2410.78.29.46/3110.78.29.46 – 10.78.29.4710.78.29.47
2510.78.29.48/3110.78.29.48 – 10.78.29.4910.78.29.49
2610.78.29.50/3110.78.29.50 – 10.78.29.5110.78.29.51
2710.78.29.52/3110.78.29.52 – 10.78.29.5310.78.29.53
2810.78.29.54/3110.78.29.54 – 10.78.29.5510.78.29.55
2910.78.29.56/3110.78.29.56 – 10.78.29.5710.78.29.57
3010.78.29.58/3110.78.29.58 – 10.78.29.5910.78.29.59
3110.78.29.60/3110.78.29.60 – 10.78.29.6110.78.29.61
3210.78.29.62/3110.78.29.62 – 10.78.29.6310.78.29.63
3310.78.29.64/3110.78.29.64 – 10.78.29.6510.78.29.65
3410.78.29.66/3110.78.29.66 – 10.78.29.6710.78.29.67
3510.78.29.68/3110.78.29.68 – 10.78.29.6910.78.29.69
3610.78.29.70/3110.78.29.70 – 10.78.29.7110.78.29.71
3710.78.29.72/3110.78.29.72 – 10.78.29.7310.78.29.73
3810.78.29.74/3110.78.29.74 – 10.78.29.7510.78.29.75
3910.78.29.76/3110.78.29.76 – 10.78.29.7710.78.29.77
4010.78.29.78/3110.78.29.78 – 10.78.29.7910.78.29.79
4110.78.29.80/3110.78.29.80 – 10.78.29.8110.78.29.81
4210.78.29.82/3110.78.29.82 – 10.78.29.8310.78.29.83
4310.78.29.84/3110.78.29.84 – 10.78.29.8510.78.29.85
4410.78.29.86/3110.78.29.86 – 10.78.29.8710.78.29.87
4510.78.29.88/3110.78.29.88 – 10.78.29.8910.78.29.89
4610.78.29.90/3110.78.29.90 – 10.78.29.9110.78.29.91
4710.78.29.92/3110.78.29.92 – 10.78.29.9310.78.29.93
4810.78.29.94/3110.78.29.94 – 10.78.29.9510.78.29.95
4910.78.29.96/3110.78.29.96 – 10.78.29.9710.78.29.97
5010.78.29.98/3110.78.29.98 – 10.78.29.9910.78.29.99
5110.78.29.100/3110.78.29.100 – 10.78.29.10110.78.29.101
5210.78.29.102/3110.78.29.102 – 10.78.29.10310.78.29.103
5310.78.29.104/3110.78.29.104 – 10.78.29.10510.78.29.105
5410.78.29.106/3110.78.29.106 – 10.78.29.10710.78.29.107
5510.78.29.108/3110.78.29.108 – 10.78.29.10910.78.29.109
5610.78.29.110/3110.78.29.110 – 10.78.29.11110.78.29.111
5710.78.29.112/3110.78.29.112 – 10.78.29.11310.78.29.113
5810.78.29.114/3110.78.29.114 – 10.78.29.11510.78.29.115
5910.78.29.116/3110.78.29.116 – 10.78.29.11710.78.29.117
6010.78.29.118/3110.78.29.118 – 10.78.29.11910.78.29.119
6110.78.29.120/3110.78.29.120 – 10.78.29.12110.78.29.121
6210.78.29.122/3110.78.29.122 – 10.78.29.12310.78.29.123
6310.78.29.124/3110.78.29.124 – 10.78.29.12510.78.29.125
6410.78.29.126/3110.78.29.126 – 10.78.29.12710.78.29.127
6510.78.29.128/3110.78.29.128 – 10.78.29.12910.78.29.129
6610.78.29.130/3110.78.29.130 – 10.78.29.13110.78.29.131
6710.78.29.132/3110.78.29.132 – 10.78.29.13310.78.29.133
6810.78.29.134/3110.78.29.134 – 10.78.29.13510.78.29.135
6910.78.29.136/3110.78.29.136 – 10.78.29.13710.78.29.137
7010.78.29.138/3110.78.29.138 – 10.78.29.13910.78.29.139
7110.78.29.140/3110.78.29.140 – 10.78.29.14110.78.29.141
7210.78.29.142/3110.78.29.142 – 10.78.29.14310.78.29.143
7310.78.29.144/3110.78.29.144 – 10.78.29.14510.78.29.145
7410.78.29.146/3110.78.29.146 – 10.78.29.14710.78.29.147
7510.78.29.148/3110.78.29.148 – 10.78.29.14910.78.29.149
7610.78.29.150/3110.78.29.150 – 10.78.29.15110.78.29.151
7710.78.29.152/3110.78.29.152 – 10.78.29.15310.78.29.153
7810.78.29.154/3110.78.29.154 – 10.78.29.15510.78.29.155
7910.78.29.156/3110.78.29.156 – 10.78.29.15710.78.29.157
8010.78.29.158/3110.78.29.158 – 10.78.29.15910.78.29.159
8110.78.29.160/3110.78.29.160 – 10.78.29.16110.78.29.161
8210.78.29.162/3110.78.29.162 – 10.78.29.16310.78.29.163
8310.78.29.164/3110.78.29.164 – 10.78.29.16510.78.29.165
8410.78.29.166/3110.78.29.166 – 10.78.29.16710.78.29.167
8510.78.29.168/3110.78.29.168 – 10.78.29.16910.78.29.169
8610.78.29.170/3110.78.29.170 – 10.78.29.17110.78.29.171
8710.78.29.172/3110.78.29.172 – 10.78.29.17310.78.29.173
8810.78.29.174/3110.78.29.174 – 10.78.29.17510.78.29.175
8910.78.29.176/3110.78.29.176 – 10.78.29.17710.78.29.177
9010.78.29.178/3110.78.29.178 – 10.78.29.17910.78.29.179
9110.78.29.180/3110.78.29.180 – 10.78.29.18110.78.29.181
9210.78.29.182/3110.78.29.182 – 10.78.29.18310.78.29.183
9310.78.29.184/3110.78.29.184 – 10.78.29.18510.78.29.185
9410.78.29.186/3110.78.29.186 – 10.78.29.18710.78.29.187
9510.78.29.188/3110.78.29.188 – 10.78.29.18910.78.29.189
9610.78.29.190/3110.78.29.190 – 10.78.29.19110.78.29.191
9710.78.29.192/3110.78.29.192 – 10.78.29.19310.78.29.193
9810.78.29.194/3110.78.29.194 – 10.78.29.19510.78.29.195
9910.78.29.196/3110.78.29.196 – 10.78.29.19710.78.29.197
10010.78.29.198/3110.78.29.198 – 10.78.29.19910.78.29.199
10110.78.29.200/3110.78.29.200 – 10.78.29.20110.78.29.201
10210.78.29.202/3110.78.29.202 – 10.78.29.20310.78.29.203
10310.78.29.204/3110.78.29.204 – 10.78.29.20510.78.29.205
10410.78.29.206/3110.78.29.206 – 10.78.29.20710.78.29.207
10510.78.29.208/3110.78.29.208 – 10.78.29.20910.78.29.209
10610.78.29.210/3110.78.29.210 – 10.78.29.21110.78.29.211
10710.78.29.212/3110.78.29.212 – 10.78.29.21310.78.29.213
10810.78.29.214/3110.78.29.214 – 10.78.29.21510.78.29.215
10910.78.29.216/3110.78.29.216 – 10.78.29.21710.78.29.217
11010.78.29.218/3110.78.29.218 – 10.78.29.21910.78.29.219
11110.78.29.220/3110.78.29.220 – 10.78.29.22110.78.29.221
11210.78.29.222/3110.78.29.222 – 10.78.29.22310.78.29.223
11310.78.29.224/3110.78.29.224 – 10.78.29.22510.78.29.225
11410.78.29.226/3110.78.29.226 – 10.78.29.22710.78.29.227
11510.78.29.228/3110.78.29.228 – 10.78.29.22910.78.29.229
11610.78.29.230/3110.78.29.230 – 10.78.29.23110.78.29.231
11710.78.29.232/3110.78.29.232 – 10.78.29.23310.78.29.233
11810.78.29.234/3110.78.29.234 – 10.78.29.23510.78.29.235
11910.78.29.236/3110.78.29.236 – 10.78.29.23710.78.29.237
12010.78.29.238/3110.78.29.238 – 10.78.29.23910.78.29.239
12110.78.29.240/3110.78.29.240 – 10.78.29.24110.78.29.241
12210.78.29.242/3110.78.29.242 – 10.78.29.24310.78.29.243
12310.78.29.244/3110.78.29.244 – 10.78.29.24510.78.29.245
12410.78.29.246/3110.78.29.246 – 10.78.29.24710.78.29.247
12510.78.29.248/3110.78.29.248 – 10.78.29.24910.78.29.249
12610.78.29.250/3110.78.29.250 – 10.78.29.25110.78.29.251
12710.78.29.252/3110.78.29.252 – 10.78.29.25310.78.29.253
12810.78.29.254/3110.78.29.254 – 10.78.29.25510.78.29.255
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 →