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)10.2.104.0/24
network10.2.104.0/24
broadcast10.2.104.255
first host10.2.104.1
last host10.2.104.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.2.104.0/24
address00001010.00000010.01101000.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000010.01101000.00000000
broadcast00001010.00000010.01101000.11111111
green = network part, grey = host part
hex0x0a026800
decimal167929856
reverse dns0.104.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:6800

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.104.0/3110.2.104.0 – 10.2.104.110.2.104.1
210.2.104.2/3110.2.104.2 – 10.2.104.310.2.104.3
310.2.104.4/3110.2.104.4 – 10.2.104.510.2.104.5
410.2.104.6/3110.2.104.6 – 10.2.104.710.2.104.7
510.2.104.8/3110.2.104.8 – 10.2.104.910.2.104.9
610.2.104.10/3110.2.104.10 – 10.2.104.1110.2.104.11
710.2.104.12/3110.2.104.12 – 10.2.104.1310.2.104.13
810.2.104.14/3110.2.104.14 – 10.2.104.1510.2.104.15
910.2.104.16/3110.2.104.16 – 10.2.104.1710.2.104.17
1010.2.104.18/3110.2.104.18 – 10.2.104.1910.2.104.19
1110.2.104.20/3110.2.104.20 – 10.2.104.2110.2.104.21
1210.2.104.22/3110.2.104.22 – 10.2.104.2310.2.104.23
1310.2.104.24/3110.2.104.24 – 10.2.104.2510.2.104.25
1410.2.104.26/3110.2.104.26 – 10.2.104.2710.2.104.27
1510.2.104.28/3110.2.104.28 – 10.2.104.2910.2.104.29
1610.2.104.30/3110.2.104.30 – 10.2.104.3110.2.104.31
1710.2.104.32/3110.2.104.32 – 10.2.104.3310.2.104.33
1810.2.104.34/3110.2.104.34 – 10.2.104.3510.2.104.35
1910.2.104.36/3110.2.104.36 – 10.2.104.3710.2.104.37
2010.2.104.38/3110.2.104.38 – 10.2.104.3910.2.104.39
2110.2.104.40/3110.2.104.40 – 10.2.104.4110.2.104.41
2210.2.104.42/3110.2.104.42 – 10.2.104.4310.2.104.43
2310.2.104.44/3110.2.104.44 – 10.2.104.4510.2.104.45
2410.2.104.46/3110.2.104.46 – 10.2.104.4710.2.104.47
2510.2.104.48/3110.2.104.48 – 10.2.104.4910.2.104.49
2610.2.104.50/3110.2.104.50 – 10.2.104.5110.2.104.51
2710.2.104.52/3110.2.104.52 – 10.2.104.5310.2.104.53
2810.2.104.54/3110.2.104.54 – 10.2.104.5510.2.104.55
2910.2.104.56/3110.2.104.56 – 10.2.104.5710.2.104.57
3010.2.104.58/3110.2.104.58 – 10.2.104.5910.2.104.59
3110.2.104.60/3110.2.104.60 – 10.2.104.6110.2.104.61
3210.2.104.62/3110.2.104.62 – 10.2.104.6310.2.104.63
3310.2.104.64/3110.2.104.64 – 10.2.104.6510.2.104.65
3410.2.104.66/3110.2.104.66 – 10.2.104.6710.2.104.67
3510.2.104.68/3110.2.104.68 – 10.2.104.6910.2.104.69
3610.2.104.70/3110.2.104.70 – 10.2.104.7110.2.104.71
3710.2.104.72/3110.2.104.72 – 10.2.104.7310.2.104.73
3810.2.104.74/3110.2.104.74 – 10.2.104.7510.2.104.75
3910.2.104.76/3110.2.104.76 – 10.2.104.7710.2.104.77
4010.2.104.78/3110.2.104.78 – 10.2.104.7910.2.104.79
4110.2.104.80/3110.2.104.80 – 10.2.104.8110.2.104.81
4210.2.104.82/3110.2.104.82 – 10.2.104.8310.2.104.83
4310.2.104.84/3110.2.104.84 – 10.2.104.8510.2.104.85
4410.2.104.86/3110.2.104.86 – 10.2.104.8710.2.104.87
4510.2.104.88/3110.2.104.88 – 10.2.104.8910.2.104.89
4610.2.104.90/3110.2.104.90 – 10.2.104.9110.2.104.91
4710.2.104.92/3110.2.104.92 – 10.2.104.9310.2.104.93
4810.2.104.94/3110.2.104.94 – 10.2.104.9510.2.104.95
4910.2.104.96/3110.2.104.96 – 10.2.104.9710.2.104.97
5010.2.104.98/3110.2.104.98 – 10.2.104.9910.2.104.99
5110.2.104.100/3110.2.104.100 – 10.2.104.10110.2.104.101
5210.2.104.102/3110.2.104.102 – 10.2.104.10310.2.104.103
5310.2.104.104/3110.2.104.104 – 10.2.104.10510.2.104.105
5410.2.104.106/3110.2.104.106 – 10.2.104.10710.2.104.107
5510.2.104.108/3110.2.104.108 – 10.2.104.10910.2.104.109
5610.2.104.110/3110.2.104.110 – 10.2.104.11110.2.104.111
5710.2.104.112/3110.2.104.112 – 10.2.104.11310.2.104.113
5810.2.104.114/3110.2.104.114 – 10.2.104.11510.2.104.115
5910.2.104.116/3110.2.104.116 – 10.2.104.11710.2.104.117
6010.2.104.118/3110.2.104.118 – 10.2.104.11910.2.104.119
6110.2.104.120/3110.2.104.120 – 10.2.104.12110.2.104.121
6210.2.104.122/3110.2.104.122 – 10.2.104.12310.2.104.123
6310.2.104.124/3110.2.104.124 – 10.2.104.12510.2.104.125
6410.2.104.126/3110.2.104.126 – 10.2.104.12710.2.104.127
6510.2.104.128/3110.2.104.128 – 10.2.104.12910.2.104.129
6610.2.104.130/3110.2.104.130 – 10.2.104.13110.2.104.131
6710.2.104.132/3110.2.104.132 – 10.2.104.13310.2.104.133
6810.2.104.134/3110.2.104.134 – 10.2.104.13510.2.104.135
6910.2.104.136/3110.2.104.136 – 10.2.104.13710.2.104.137
7010.2.104.138/3110.2.104.138 – 10.2.104.13910.2.104.139
7110.2.104.140/3110.2.104.140 – 10.2.104.14110.2.104.141
7210.2.104.142/3110.2.104.142 – 10.2.104.14310.2.104.143
7310.2.104.144/3110.2.104.144 – 10.2.104.14510.2.104.145
7410.2.104.146/3110.2.104.146 – 10.2.104.14710.2.104.147
7510.2.104.148/3110.2.104.148 – 10.2.104.14910.2.104.149
7610.2.104.150/3110.2.104.150 – 10.2.104.15110.2.104.151
7710.2.104.152/3110.2.104.152 – 10.2.104.15310.2.104.153
7810.2.104.154/3110.2.104.154 – 10.2.104.15510.2.104.155
7910.2.104.156/3110.2.104.156 – 10.2.104.15710.2.104.157
8010.2.104.158/3110.2.104.158 – 10.2.104.15910.2.104.159
8110.2.104.160/3110.2.104.160 – 10.2.104.16110.2.104.161
8210.2.104.162/3110.2.104.162 – 10.2.104.16310.2.104.163
8310.2.104.164/3110.2.104.164 – 10.2.104.16510.2.104.165
8410.2.104.166/3110.2.104.166 – 10.2.104.16710.2.104.167
8510.2.104.168/3110.2.104.168 – 10.2.104.16910.2.104.169
8610.2.104.170/3110.2.104.170 – 10.2.104.17110.2.104.171
8710.2.104.172/3110.2.104.172 – 10.2.104.17310.2.104.173
8810.2.104.174/3110.2.104.174 – 10.2.104.17510.2.104.175
8910.2.104.176/3110.2.104.176 – 10.2.104.17710.2.104.177
9010.2.104.178/3110.2.104.178 – 10.2.104.17910.2.104.179
9110.2.104.180/3110.2.104.180 – 10.2.104.18110.2.104.181
9210.2.104.182/3110.2.104.182 – 10.2.104.18310.2.104.183
9310.2.104.184/3110.2.104.184 – 10.2.104.18510.2.104.185
9410.2.104.186/3110.2.104.186 – 10.2.104.18710.2.104.187
9510.2.104.188/3110.2.104.188 – 10.2.104.18910.2.104.189
9610.2.104.190/3110.2.104.190 – 10.2.104.19110.2.104.191
9710.2.104.192/3110.2.104.192 – 10.2.104.19310.2.104.193
9810.2.104.194/3110.2.104.194 – 10.2.104.19510.2.104.195
9910.2.104.196/3110.2.104.196 – 10.2.104.19710.2.104.197
10010.2.104.198/3110.2.104.198 – 10.2.104.19910.2.104.199
10110.2.104.200/3110.2.104.200 – 10.2.104.20110.2.104.201
10210.2.104.202/3110.2.104.202 – 10.2.104.20310.2.104.203
10310.2.104.204/3110.2.104.204 – 10.2.104.20510.2.104.205
10410.2.104.206/3110.2.104.206 – 10.2.104.20710.2.104.207
10510.2.104.208/3110.2.104.208 – 10.2.104.20910.2.104.209
10610.2.104.210/3110.2.104.210 – 10.2.104.21110.2.104.211
10710.2.104.212/3110.2.104.212 – 10.2.104.21310.2.104.213
10810.2.104.214/3110.2.104.214 – 10.2.104.21510.2.104.215
10910.2.104.216/3110.2.104.216 – 10.2.104.21710.2.104.217
11010.2.104.218/3110.2.104.218 – 10.2.104.21910.2.104.219
11110.2.104.220/3110.2.104.220 – 10.2.104.22110.2.104.221
11210.2.104.222/3110.2.104.222 – 10.2.104.22310.2.104.223
11310.2.104.224/3110.2.104.224 – 10.2.104.22510.2.104.225
11410.2.104.226/3110.2.104.226 – 10.2.104.22710.2.104.227
11510.2.104.228/3110.2.104.228 – 10.2.104.22910.2.104.229
11610.2.104.230/3110.2.104.230 – 10.2.104.23110.2.104.231
11710.2.104.232/3110.2.104.232 – 10.2.104.23310.2.104.233
11810.2.104.234/3110.2.104.234 – 10.2.104.23510.2.104.235
11910.2.104.236/3110.2.104.236 – 10.2.104.23710.2.104.237
12010.2.104.238/3110.2.104.238 – 10.2.104.23910.2.104.239
12110.2.104.240/3110.2.104.240 – 10.2.104.24110.2.104.241
12210.2.104.242/3110.2.104.242 – 10.2.104.24310.2.104.243
12310.2.104.244/3110.2.104.244 – 10.2.104.24510.2.104.245
12410.2.104.246/3110.2.104.246 – 10.2.104.24710.2.104.247
12510.2.104.248/3110.2.104.248 – 10.2.104.24910.2.104.249
12610.2.104.250/3110.2.104.250 – 10.2.104.25110.2.104.251
12710.2.104.252/3110.2.104.252 – 10.2.104.25310.2.104.253
12810.2.104.254/3110.2.104.254 – 10.2.104.25510.2.104.255
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 →