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)10.7.166.0/24
network10.7.166.0/24
broadcast10.7.166.255
first host10.7.166.1
last host10.7.166.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.7.166.0/24
address00001010.00000111.10100110.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000111.10100110.00000000
broadcast00001010.00000111.10100110.11111111
green = network part, grey = host part
hex0x0a07a600
decimal168273408
reverse dns0.166.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:a600

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.7.166.0/3110.7.166.0 – 10.7.166.110.7.166.1
210.7.166.2/3110.7.166.2 – 10.7.166.310.7.166.3
310.7.166.4/3110.7.166.4 – 10.7.166.510.7.166.5
410.7.166.6/3110.7.166.6 – 10.7.166.710.7.166.7
510.7.166.8/3110.7.166.8 – 10.7.166.910.7.166.9
610.7.166.10/3110.7.166.10 – 10.7.166.1110.7.166.11
710.7.166.12/3110.7.166.12 – 10.7.166.1310.7.166.13
810.7.166.14/3110.7.166.14 – 10.7.166.1510.7.166.15
910.7.166.16/3110.7.166.16 – 10.7.166.1710.7.166.17
1010.7.166.18/3110.7.166.18 – 10.7.166.1910.7.166.19
1110.7.166.20/3110.7.166.20 – 10.7.166.2110.7.166.21
1210.7.166.22/3110.7.166.22 – 10.7.166.2310.7.166.23
1310.7.166.24/3110.7.166.24 – 10.7.166.2510.7.166.25
1410.7.166.26/3110.7.166.26 – 10.7.166.2710.7.166.27
1510.7.166.28/3110.7.166.28 – 10.7.166.2910.7.166.29
1610.7.166.30/3110.7.166.30 – 10.7.166.3110.7.166.31
1710.7.166.32/3110.7.166.32 – 10.7.166.3310.7.166.33
1810.7.166.34/3110.7.166.34 – 10.7.166.3510.7.166.35
1910.7.166.36/3110.7.166.36 – 10.7.166.3710.7.166.37
2010.7.166.38/3110.7.166.38 – 10.7.166.3910.7.166.39
2110.7.166.40/3110.7.166.40 – 10.7.166.4110.7.166.41
2210.7.166.42/3110.7.166.42 – 10.7.166.4310.7.166.43
2310.7.166.44/3110.7.166.44 – 10.7.166.4510.7.166.45
2410.7.166.46/3110.7.166.46 – 10.7.166.4710.7.166.47
2510.7.166.48/3110.7.166.48 – 10.7.166.4910.7.166.49
2610.7.166.50/3110.7.166.50 – 10.7.166.5110.7.166.51
2710.7.166.52/3110.7.166.52 – 10.7.166.5310.7.166.53
2810.7.166.54/3110.7.166.54 – 10.7.166.5510.7.166.55
2910.7.166.56/3110.7.166.56 – 10.7.166.5710.7.166.57
3010.7.166.58/3110.7.166.58 – 10.7.166.5910.7.166.59
3110.7.166.60/3110.7.166.60 – 10.7.166.6110.7.166.61
3210.7.166.62/3110.7.166.62 – 10.7.166.6310.7.166.63
3310.7.166.64/3110.7.166.64 – 10.7.166.6510.7.166.65
3410.7.166.66/3110.7.166.66 – 10.7.166.6710.7.166.67
3510.7.166.68/3110.7.166.68 – 10.7.166.6910.7.166.69
3610.7.166.70/3110.7.166.70 – 10.7.166.7110.7.166.71
3710.7.166.72/3110.7.166.72 – 10.7.166.7310.7.166.73
3810.7.166.74/3110.7.166.74 – 10.7.166.7510.7.166.75
3910.7.166.76/3110.7.166.76 – 10.7.166.7710.7.166.77
4010.7.166.78/3110.7.166.78 – 10.7.166.7910.7.166.79
4110.7.166.80/3110.7.166.80 – 10.7.166.8110.7.166.81
4210.7.166.82/3110.7.166.82 – 10.7.166.8310.7.166.83
4310.7.166.84/3110.7.166.84 – 10.7.166.8510.7.166.85
4410.7.166.86/3110.7.166.86 – 10.7.166.8710.7.166.87
4510.7.166.88/3110.7.166.88 – 10.7.166.8910.7.166.89
4610.7.166.90/3110.7.166.90 – 10.7.166.9110.7.166.91
4710.7.166.92/3110.7.166.92 – 10.7.166.9310.7.166.93
4810.7.166.94/3110.7.166.94 – 10.7.166.9510.7.166.95
4910.7.166.96/3110.7.166.96 – 10.7.166.9710.7.166.97
5010.7.166.98/3110.7.166.98 – 10.7.166.9910.7.166.99
5110.7.166.100/3110.7.166.100 – 10.7.166.10110.7.166.101
5210.7.166.102/3110.7.166.102 – 10.7.166.10310.7.166.103
5310.7.166.104/3110.7.166.104 – 10.7.166.10510.7.166.105
5410.7.166.106/3110.7.166.106 – 10.7.166.10710.7.166.107
5510.7.166.108/3110.7.166.108 – 10.7.166.10910.7.166.109
5610.7.166.110/3110.7.166.110 – 10.7.166.11110.7.166.111
5710.7.166.112/3110.7.166.112 – 10.7.166.11310.7.166.113
5810.7.166.114/3110.7.166.114 – 10.7.166.11510.7.166.115
5910.7.166.116/3110.7.166.116 – 10.7.166.11710.7.166.117
6010.7.166.118/3110.7.166.118 – 10.7.166.11910.7.166.119
6110.7.166.120/3110.7.166.120 – 10.7.166.12110.7.166.121
6210.7.166.122/3110.7.166.122 – 10.7.166.12310.7.166.123
6310.7.166.124/3110.7.166.124 – 10.7.166.12510.7.166.125
6410.7.166.126/3110.7.166.126 – 10.7.166.12710.7.166.127
6510.7.166.128/3110.7.166.128 – 10.7.166.12910.7.166.129
6610.7.166.130/3110.7.166.130 – 10.7.166.13110.7.166.131
6710.7.166.132/3110.7.166.132 – 10.7.166.13310.7.166.133
6810.7.166.134/3110.7.166.134 – 10.7.166.13510.7.166.135
6910.7.166.136/3110.7.166.136 – 10.7.166.13710.7.166.137
7010.7.166.138/3110.7.166.138 – 10.7.166.13910.7.166.139
7110.7.166.140/3110.7.166.140 – 10.7.166.14110.7.166.141
7210.7.166.142/3110.7.166.142 – 10.7.166.14310.7.166.143
7310.7.166.144/3110.7.166.144 – 10.7.166.14510.7.166.145
7410.7.166.146/3110.7.166.146 – 10.7.166.14710.7.166.147
7510.7.166.148/3110.7.166.148 – 10.7.166.14910.7.166.149
7610.7.166.150/3110.7.166.150 – 10.7.166.15110.7.166.151
7710.7.166.152/3110.7.166.152 – 10.7.166.15310.7.166.153
7810.7.166.154/3110.7.166.154 – 10.7.166.15510.7.166.155
7910.7.166.156/3110.7.166.156 – 10.7.166.15710.7.166.157
8010.7.166.158/3110.7.166.158 – 10.7.166.15910.7.166.159
8110.7.166.160/3110.7.166.160 – 10.7.166.16110.7.166.161
8210.7.166.162/3110.7.166.162 – 10.7.166.16310.7.166.163
8310.7.166.164/3110.7.166.164 – 10.7.166.16510.7.166.165
8410.7.166.166/3110.7.166.166 – 10.7.166.16710.7.166.167
8510.7.166.168/3110.7.166.168 – 10.7.166.16910.7.166.169
8610.7.166.170/3110.7.166.170 – 10.7.166.17110.7.166.171
8710.7.166.172/3110.7.166.172 – 10.7.166.17310.7.166.173
8810.7.166.174/3110.7.166.174 – 10.7.166.17510.7.166.175
8910.7.166.176/3110.7.166.176 – 10.7.166.17710.7.166.177
9010.7.166.178/3110.7.166.178 – 10.7.166.17910.7.166.179
9110.7.166.180/3110.7.166.180 – 10.7.166.18110.7.166.181
9210.7.166.182/3110.7.166.182 – 10.7.166.18310.7.166.183
9310.7.166.184/3110.7.166.184 – 10.7.166.18510.7.166.185
9410.7.166.186/3110.7.166.186 – 10.7.166.18710.7.166.187
9510.7.166.188/3110.7.166.188 – 10.7.166.18910.7.166.189
9610.7.166.190/3110.7.166.190 – 10.7.166.19110.7.166.191
9710.7.166.192/3110.7.166.192 – 10.7.166.19310.7.166.193
9810.7.166.194/3110.7.166.194 – 10.7.166.19510.7.166.195
9910.7.166.196/3110.7.166.196 – 10.7.166.19710.7.166.197
10010.7.166.198/3110.7.166.198 – 10.7.166.19910.7.166.199
10110.7.166.200/3110.7.166.200 – 10.7.166.20110.7.166.201
10210.7.166.202/3110.7.166.202 – 10.7.166.20310.7.166.203
10310.7.166.204/3110.7.166.204 – 10.7.166.20510.7.166.205
10410.7.166.206/3110.7.166.206 – 10.7.166.20710.7.166.207
10510.7.166.208/3110.7.166.208 – 10.7.166.20910.7.166.209
10610.7.166.210/3110.7.166.210 – 10.7.166.21110.7.166.211
10710.7.166.212/3110.7.166.212 – 10.7.166.21310.7.166.213
10810.7.166.214/3110.7.166.214 – 10.7.166.21510.7.166.215
10910.7.166.216/3110.7.166.216 – 10.7.166.21710.7.166.217
11010.7.166.218/3110.7.166.218 – 10.7.166.21910.7.166.219
11110.7.166.220/3110.7.166.220 – 10.7.166.22110.7.166.221
11210.7.166.222/3110.7.166.222 – 10.7.166.22310.7.166.223
11310.7.166.224/3110.7.166.224 – 10.7.166.22510.7.166.225
11410.7.166.226/3110.7.166.226 – 10.7.166.22710.7.166.227
11510.7.166.228/3110.7.166.228 – 10.7.166.22910.7.166.229
11610.7.166.230/3110.7.166.230 – 10.7.166.23110.7.166.231
11710.7.166.232/3110.7.166.232 – 10.7.166.23310.7.166.233
11810.7.166.234/3110.7.166.234 – 10.7.166.23510.7.166.235
11910.7.166.236/3110.7.166.236 – 10.7.166.23710.7.166.237
12010.7.166.238/3110.7.166.238 – 10.7.166.23910.7.166.239
12110.7.166.240/3110.7.166.240 – 10.7.166.24110.7.166.241
12210.7.166.242/3110.7.166.242 – 10.7.166.24310.7.166.243
12310.7.166.244/3110.7.166.244 – 10.7.166.24510.7.166.245
12410.7.166.246/3110.7.166.246 – 10.7.166.24710.7.166.247
12510.7.166.248/3110.7.166.248 – 10.7.166.24910.7.166.249
12610.7.166.250/3110.7.166.250 – 10.7.166.25110.7.166.251
12710.7.166.252/3110.7.166.252 – 10.7.166.25310.7.166.253
12810.7.166.254/3110.7.166.254 – 10.7.166.25510.7.166.255
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 →