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)10.4.68.0/24
network10.4.68.0/24
broadcast10.4.68.255
first host10.4.68.1
last host10.4.68.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.4.68.0/24
address00001010.00000100.01000100.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000100.01000100.00000000
broadcast00001010.00000100.01000100.11111111
green = network part, grey = host part
hex0x0a044400
decimal168051712
reverse dns0.68.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:4400

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.4.68.0/3110.4.68.0 – 10.4.68.110.4.68.1
210.4.68.2/3110.4.68.2 – 10.4.68.310.4.68.3
310.4.68.4/3110.4.68.4 – 10.4.68.510.4.68.5
410.4.68.6/3110.4.68.6 – 10.4.68.710.4.68.7
510.4.68.8/3110.4.68.8 – 10.4.68.910.4.68.9
610.4.68.10/3110.4.68.10 – 10.4.68.1110.4.68.11
710.4.68.12/3110.4.68.12 – 10.4.68.1310.4.68.13
810.4.68.14/3110.4.68.14 – 10.4.68.1510.4.68.15
910.4.68.16/3110.4.68.16 – 10.4.68.1710.4.68.17
1010.4.68.18/3110.4.68.18 – 10.4.68.1910.4.68.19
1110.4.68.20/3110.4.68.20 – 10.4.68.2110.4.68.21
1210.4.68.22/3110.4.68.22 – 10.4.68.2310.4.68.23
1310.4.68.24/3110.4.68.24 – 10.4.68.2510.4.68.25
1410.4.68.26/3110.4.68.26 – 10.4.68.2710.4.68.27
1510.4.68.28/3110.4.68.28 – 10.4.68.2910.4.68.29
1610.4.68.30/3110.4.68.30 – 10.4.68.3110.4.68.31
1710.4.68.32/3110.4.68.32 – 10.4.68.3310.4.68.33
1810.4.68.34/3110.4.68.34 – 10.4.68.3510.4.68.35
1910.4.68.36/3110.4.68.36 – 10.4.68.3710.4.68.37
2010.4.68.38/3110.4.68.38 – 10.4.68.3910.4.68.39
2110.4.68.40/3110.4.68.40 – 10.4.68.4110.4.68.41
2210.4.68.42/3110.4.68.42 – 10.4.68.4310.4.68.43
2310.4.68.44/3110.4.68.44 – 10.4.68.4510.4.68.45
2410.4.68.46/3110.4.68.46 – 10.4.68.4710.4.68.47
2510.4.68.48/3110.4.68.48 – 10.4.68.4910.4.68.49
2610.4.68.50/3110.4.68.50 – 10.4.68.5110.4.68.51
2710.4.68.52/3110.4.68.52 – 10.4.68.5310.4.68.53
2810.4.68.54/3110.4.68.54 – 10.4.68.5510.4.68.55
2910.4.68.56/3110.4.68.56 – 10.4.68.5710.4.68.57
3010.4.68.58/3110.4.68.58 – 10.4.68.5910.4.68.59
3110.4.68.60/3110.4.68.60 – 10.4.68.6110.4.68.61
3210.4.68.62/3110.4.68.62 – 10.4.68.6310.4.68.63
3310.4.68.64/3110.4.68.64 – 10.4.68.6510.4.68.65
3410.4.68.66/3110.4.68.66 – 10.4.68.6710.4.68.67
3510.4.68.68/3110.4.68.68 – 10.4.68.6910.4.68.69
3610.4.68.70/3110.4.68.70 – 10.4.68.7110.4.68.71
3710.4.68.72/3110.4.68.72 – 10.4.68.7310.4.68.73
3810.4.68.74/3110.4.68.74 – 10.4.68.7510.4.68.75
3910.4.68.76/3110.4.68.76 – 10.4.68.7710.4.68.77
4010.4.68.78/3110.4.68.78 – 10.4.68.7910.4.68.79
4110.4.68.80/3110.4.68.80 – 10.4.68.8110.4.68.81
4210.4.68.82/3110.4.68.82 – 10.4.68.8310.4.68.83
4310.4.68.84/3110.4.68.84 – 10.4.68.8510.4.68.85
4410.4.68.86/3110.4.68.86 – 10.4.68.8710.4.68.87
4510.4.68.88/3110.4.68.88 – 10.4.68.8910.4.68.89
4610.4.68.90/3110.4.68.90 – 10.4.68.9110.4.68.91
4710.4.68.92/3110.4.68.92 – 10.4.68.9310.4.68.93
4810.4.68.94/3110.4.68.94 – 10.4.68.9510.4.68.95
4910.4.68.96/3110.4.68.96 – 10.4.68.9710.4.68.97
5010.4.68.98/3110.4.68.98 – 10.4.68.9910.4.68.99
5110.4.68.100/3110.4.68.100 – 10.4.68.10110.4.68.101
5210.4.68.102/3110.4.68.102 – 10.4.68.10310.4.68.103
5310.4.68.104/3110.4.68.104 – 10.4.68.10510.4.68.105
5410.4.68.106/3110.4.68.106 – 10.4.68.10710.4.68.107
5510.4.68.108/3110.4.68.108 – 10.4.68.10910.4.68.109
5610.4.68.110/3110.4.68.110 – 10.4.68.11110.4.68.111
5710.4.68.112/3110.4.68.112 – 10.4.68.11310.4.68.113
5810.4.68.114/3110.4.68.114 – 10.4.68.11510.4.68.115
5910.4.68.116/3110.4.68.116 – 10.4.68.11710.4.68.117
6010.4.68.118/3110.4.68.118 – 10.4.68.11910.4.68.119
6110.4.68.120/3110.4.68.120 – 10.4.68.12110.4.68.121
6210.4.68.122/3110.4.68.122 – 10.4.68.12310.4.68.123
6310.4.68.124/3110.4.68.124 – 10.4.68.12510.4.68.125
6410.4.68.126/3110.4.68.126 – 10.4.68.12710.4.68.127
6510.4.68.128/3110.4.68.128 – 10.4.68.12910.4.68.129
6610.4.68.130/3110.4.68.130 – 10.4.68.13110.4.68.131
6710.4.68.132/3110.4.68.132 – 10.4.68.13310.4.68.133
6810.4.68.134/3110.4.68.134 – 10.4.68.13510.4.68.135
6910.4.68.136/3110.4.68.136 – 10.4.68.13710.4.68.137
7010.4.68.138/3110.4.68.138 – 10.4.68.13910.4.68.139
7110.4.68.140/3110.4.68.140 – 10.4.68.14110.4.68.141
7210.4.68.142/3110.4.68.142 – 10.4.68.14310.4.68.143
7310.4.68.144/3110.4.68.144 – 10.4.68.14510.4.68.145
7410.4.68.146/3110.4.68.146 – 10.4.68.14710.4.68.147
7510.4.68.148/3110.4.68.148 – 10.4.68.14910.4.68.149
7610.4.68.150/3110.4.68.150 – 10.4.68.15110.4.68.151
7710.4.68.152/3110.4.68.152 – 10.4.68.15310.4.68.153
7810.4.68.154/3110.4.68.154 – 10.4.68.15510.4.68.155
7910.4.68.156/3110.4.68.156 – 10.4.68.15710.4.68.157
8010.4.68.158/3110.4.68.158 – 10.4.68.15910.4.68.159
8110.4.68.160/3110.4.68.160 – 10.4.68.16110.4.68.161
8210.4.68.162/3110.4.68.162 – 10.4.68.16310.4.68.163
8310.4.68.164/3110.4.68.164 – 10.4.68.16510.4.68.165
8410.4.68.166/3110.4.68.166 – 10.4.68.16710.4.68.167
8510.4.68.168/3110.4.68.168 – 10.4.68.16910.4.68.169
8610.4.68.170/3110.4.68.170 – 10.4.68.17110.4.68.171
8710.4.68.172/3110.4.68.172 – 10.4.68.17310.4.68.173
8810.4.68.174/3110.4.68.174 – 10.4.68.17510.4.68.175
8910.4.68.176/3110.4.68.176 – 10.4.68.17710.4.68.177
9010.4.68.178/3110.4.68.178 – 10.4.68.17910.4.68.179
9110.4.68.180/3110.4.68.180 – 10.4.68.18110.4.68.181
9210.4.68.182/3110.4.68.182 – 10.4.68.18310.4.68.183
9310.4.68.184/3110.4.68.184 – 10.4.68.18510.4.68.185
9410.4.68.186/3110.4.68.186 – 10.4.68.18710.4.68.187
9510.4.68.188/3110.4.68.188 – 10.4.68.18910.4.68.189
9610.4.68.190/3110.4.68.190 – 10.4.68.19110.4.68.191
9710.4.68.192/3110.4.68.192 – 10.4.68.19310.4.68.193
9810.4.68.194/3110.4.68.194 – 10.4.68.19510.4.68.195
9910.4.68.196/3110.4.68.196 – 10.4.68.19710.4.68.197
10010.4.68.198/3110.4.68.198 – 10.4.68.19910.4.68.199
10110.4.68.200/3110.4.68.200 – 10.4.68.20110.4.68.201
10210.4.68.202/3110.4.68.202 – 10.4.68.20310.4.68.203
10310.4.68.204/3110.4.68.204 – 10.4.68.20510.4.68.205
10410.4.68.206/3110.4.68.206 – 10.4.68.20710.4.68.207
10510.4.68.208/3110.4.68.208 – 10.4.68.20910.4.68.209
10610.4.68.210/3110.4.68.210 – 10.4.68.21110.4.68.211
10710.4.68.212/3110.4.68.212 – 10.4.68.21310.4.68.213
10810.4.68.214/3110.4.68.214 – 10.4.68.21510.4.68.215
10910.4.68.216/3110.4.68.216 – 10.4.68.21710.4.68.217
11010.4.68.218/3110.4.68.218 – 10.4.68.21910.4.68.219
11110.4.68.220/3110.4.68.220 – 10.4.68.22110.4.68.221
11210.4.68.222/3110.4.68.222 – 10.4.68.22310.4.68.223
11310.4.68.224/3110.4.68.224 – 10.4.68.22510.4.68.225
11410.4.68.226/3110.4.68.226 – 10.4.68.22710.4.68.227
11510.4.68.228/3110.4.68.228 – 10.4.68.22910.4.68.229
11610.4.68.230/3110.4.68.230 – 10.4.68.23110.4.68.231
11710.4.68.232/3110.4.68.232 – 10.4.68.23310.4.68.233
11810.4.68.234/3110.4.68.234 – 10.4.68.23510.4.68.235
11910.4.68.236/3110.4.68.236 – 10.4.68.23710.4.68.237
12010.4.68.238/3110.4.68.238 – 10.4.68.23910.4.68.239
12110.4.68.240/3110.4.68.240 – 10.4.68.24110.4.68.241
12210.4.68.242/3110.4.68.242 – 10.4.68.24310.4.68.243
12310.4.68.244/3110.4.68.244 – 10.4.68.24510.4.68.245
12410.4.68.246/3110.4.68.246 – 10.4.68.24710.4.68.247
12510.4.68.248/3110.4.68.248 – 10.4.68.24910.4.68.249
12610.4.68.250/3110.4.68.250 – 10.4.68.25110.4.68.251
12710.4.68.252/3110.4.68.252 – 10.4.68.25310.4.68.253
12810.4.68.254/3110.4.68.254 – 10.4.68.25510.4.68.255
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 →