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)10.2.164.0/24
network10.2.164.0/24
broadcast10.2.164.255
first host10.2.164.1
last host10.2.164.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.2.164.0/24
address00001010.00000010.10100100.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000010.10100100.00000000
broadcast00001010.00000010.10100100.11111111
green = network part, grey = host part
hex0x0a02a400
decimal167945216
reverse dns0.164.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:a400

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.164.0/3110.2.164.0 – 10.2.164.110.2.164.1
210.2.164.2/3110.2.164.2 – 10.2.164.310.2.164.3
310.2.164.4/3110.2.164.4 – 10.2.164.510.2.164.5
410.2.164.6/3110.2.164.6 – 10.2.164.710.2.164.7
510.2.164.8/3110.2.164.8 – 10.2.164.910.2.164.9
610.2.164.10/3110.2.164.10 – 10.2.164.1110.2.164.11
710.2.164.12/3110.2.164.12 – 10.2.164.1310.2.164.13
810.2.164.14/3110.2.164.14 – 10.2.164.1510.2.164.15
910.2.164.16/3110.2.164.16 – 10.2.164.1710.2.164.17
1010.2.164.18/3110.2.164.18 – 10.2.164.1910.2.164.19
1110.2.164.20/3110.2.164.20 – 10.2.164.2110.2.164.21
1210.2.164.22/3110.2.164.22 – 10.2.164.2310.2.164.23
1310.2.164.24/3110.2.164.24 – 10.2.164.2510.2.164.25
1410.2.164.26/3110.2.164.26 – 10.2.164.2710.2.164.27
1510.2.164.28/3110.2.164.28 – 10.2.164.2910.2.164.29
1610.2.164.30/3110.2.164.30 – 10.2.164.3110.2.164.31
1710.2.164.32/3110.2.164.32 – 10.2.164.3310.2.164.33
1810.2.164.34/3110.2.164.34 – 10.2.164.3510.2.164.35
1910.2.164.36/3110.2.164.36 – 10.2.164.3710.2.164.37
2010.2.164.38/3110.2.164.38 – 10.2.164.3910.2.164.39
2110.2.164.40/3110.2.164.40 – 10.2.164.4110.2.164.41
2210.2.164.42/3110.2.164.42 – 10.2.164.4310.2.164.43
2310.2.164.44/3110.2.164.44 – 10.2.164.4510.2.164.45
2410.2.164.46/3110.2.164.46 – 10.2.164.4710.2.164.47
2510.2.164.48/3110.2.164.48 – 10.2.164.4910.2.164.49
2610.2.164.50/3110.2.164.50 – 10.2.164.5110.2.164.51
2710.2.164.52/3110.2.164.52 – 10.2.164.5310.2.164.53
2810.2.164.54/3110.2.164.54 – 10.2.164.5510.2.164.55
2910.2.164.56/3110.2.164.56 – 10.2.164.5710.2.164.57
3010.2.164.58/3110.2.164.58 – 10.2.164.5910.2.164.59
3110.2.164.60/3110.2.164.60 – 10.2.164.6110.2.164.61
3210.2.164.62/3110.2.164.62 – 10.2.164.6310.2.164.63
3310.2.164.64/3110.2.164.64 – 10.2.164.6510.2.164.65
3410.2.164.66/3110.2.164.66 – 10.2.164.6710.2.164.67
3510.2.164.68/3110.2.164.68 – 10.2.164.6910.2.164.69
3610.2.164.70/3110.2.164.70 – 10.2.164.7110.2.164.71
3710.2.164.72/3110.2.164.72 – 10.2.164.7310.2.164.73
3810.2.164.74/3110.2.164.74 – 10.2.164.7510.2.164.75
3910.2.164.76/3110.2.164.76 – 10.2.164.7710.2.164.77
4010.2.164.78/3110.2.164.78 – 10.2.164.7910.2.164.79
4110.2.164.80/3110.2.164.80 – 10.2.164.8110.2.164.81
4210.2.164.82/3110.2.164.82 – 10.2.164.8310.2.164.83
4310.2.164.84/3110.2.164.84 – 10.2.164.8510.2.164.85
4410.2.164.86/3110.2.164.86 – 10.2.164.8710.2.164.87
4510.2.164.88/3110.2.164.88 – 10.2.164.8910.2.164.89
4610.2.164.90/3110.2.164.90 – 10.2.164.9110.2.164.91
4710.2.164.92/3110.2.164.92 – 10.2.164.9310.2.164.93
4810.2.164.94/3110.2.164.94 – 10.2.164.9510.2.164.95
4910.2.164.96/3110.2.164.96 – 10.2.164.9710.2.164.97
5010.2.164.98/3110.2.164.98 – 10.2.164.9910.2.164.99
5110.2.164.100/3110.2.164.100 – 10.2.164.10110.2.164.101
5210.2.164.102/3110.2.164.102 – 10.2.164.10310.2.164.103
5310.2.164.104/3110.2.164.104 – 10.2.164.10510.2.164.105
5410.2.164.106/3110.2.164.106 – 10.2.164.10710.2.164.107
5510.2.164.108/3110.2.164.108 – 10.2.164.10910.2.164.109
5610.2.164.110/3110.2.164.110 – 10.2.164.11110.2.164.111
5710.2.164.112/3110.2.164.112 – 10.2.164.11310.2.164.113
5810.2.164.114/3110.2.164.114 – 10.2.164.11510.2.164.115
5910.2.164.116/3110.2.164.116 – 10.2.164.11710.2.164.117
6010.2.164.118/3110.2.164.118 – 10.2.164.11910.2.164.119
6110.2.164.120/3110.2.164.120 – 10.2.164.12110.2.164.121
6210.2.164.122/3110.2.164.122 – 10.2.164.12310.2.164.123
6310.2.164.124/3110.2.164.124 – 10.2.164.12510.2.164.125
6410.2.164.126/3110.2.164.126 – 10.2.164.12710.2.164.127
6510.2.164.128/3110.2.164.128 – 10.2.164.12910.2.164.129
6610.2.164.130/3110.2.164.130 – 10.2.164.13110.2.164.131
6710.2.164.132/3110.2.164.132 – 10.2.164.13310.2.164.133
6810.2.164.134/3110.2.164.134 – 10.2.164.13510.2.164.135
6910.2.164.136/3110.2.164.136 – 10.2.164.13710.2.164.137
7010.2.164.138/3110.2.164.138 – 10.2.164.13910.2.164.139
7110.2.164.140/3110.2.164.140 – 10.2.164.14110.2.164.141
7210.2.164.142/3110.2.164.142 – 10.2.164.14310.2.164.143
7310.2.164.144/3110.2.164.144 – 10.2.164.14510.2.164.145
7410.2.164.146/3110.2.164.146 – 10.2.164.14710.2.164.147
7510.2.164.148/3110.2.164.148 – 10.2.164.14910.2.164.149
7610.2.164.150/3110.2.164.150 – 10.2.164.15110.2.164.151
7710.2.164.152/3110.2.164.152 – 10.2.164.15310.2.164.153
7810.2.164.154/3110.2.164.154 – 10.2.164.15510.2.164.155
7910.2.164.156/3110.2.164.156 – 10.2.164.15710.2.164.157
8010.2.164.158/3110.2.164.158 – 10.2.164.15910.2.164.159
8110.2.164.160/3110.2.164.160 – 10.2.164.16110.2.164.161
8210.2.164.162/3110.2.164.162 – 10.2.164.16310.2.164.163
8310.2.164.164/3110.2.164.164 – 10.2.164.16510.2.164.165
8410.2.164.166/3110.2.164.166 – 10.2.164.16710.2.164.167
8510.2.164.168/3110.2.164.168 – 10.2.164.16910.2.164.169
8610.2.164.170/3110.2.164.170 – 10.2.164.17110.2.164.171
8710.2.164.172/3110.2.164.172 – 10.2.164.17310.2.164.173
8810.2.164.174/3110.2.164.174 – 10.2.164.17510.2.164.175
8910.2.164.176/3110.2.164.176 – 10.2.164.17710.2.164.177
9010.2.164.178/3110.2.164.178 – 10.2.164.17910.2.164.179
9110.2.164.180/3110.2.164.180 – 10.2.164.18110.2.164.181
9210.2.164.182/3110.2.164.182 – 10.2.164.18310.2.164.183
9310.2.164.184/3110.2.164.184 – 10.2.164.18510.2.164.185
9410.2.164.186/3110.2.164.186 – 10.2.164.18710.2.164.187
9510.2.164.188/3110.2.164.188 – 10.2.164.18910.2.164.189
9610.2.164.190/3110.2.164.190 – 10.2.164.19110.2.164.191
9710.2.164.192/3110.2.164.192 – 10.2.164.19310.2.164.193
9810.2.164.194/3110.2.164.194 – 10.2.164.19510.2.164.195
9910.2.164.196/3110.2.164.196 – 10.2.164.19710.2.164.197
10010.2.164.198/3110.2.164.198 – 10.2.164.19910.2.164.199
10110.2.164.200/3110.2.164.200 – 10.2.164.20110.2.164.201
10210.2.164.202/3110.2.164.202 – 10.2.164.20310.2.164.203
10310.2.164.204/3110.2.164.204 – 10.2.164.20510.2.164.205
10410.2.164.206/3110.2.164.206 – 10.2.164.20710.2.164.207
10510.2.164.208/3110.2.164.208 – 10.2.164.20910.2.164.209
10610.2.164.210/3110.2.164.210 – 10.2.164.21110.2.164.211
10710.2.164.212/3110.2.164.212 – 10.2.164.21310.2.164.213
10810.2.164.214/3110.2.164.214 – 10.2.164.21510.2.164.215
10910.2.164.216/3110.2.164.216 – 10.2.164.21710.2.164.217
11010.2.164.218/3110.2.164.218 – 10.2.164.21910.2.164.219
11110.2.164.220/3110.2.164.220 – 10.2.164.22110.2.164.221
11210.2.164.222/3110.2.164.222 – 10.2.164.22310.2.164.223
11310.2.164.224/3110.2.164.224 – 10.2.164.22510.2.164.225
11410.2.164.226/3110.2.164.226 – 10.2.164.22710.2.164.227
11510.2.164.228/3110.2.164.228 – 10.2.164.22910.2.164.229
11610.2.164.230/3110.2.164.230 – 10.2.164.23110.2.164.231
11710.2.164.232/3110.2.164.232 – 10.2.164.23310.2.164.233
11810.2.164.234/3110.2.164.234 – 10.2.164.23510.2.164.235
11910.2.164.236/3110.2.164.236 – 10.2.164.23710.2.164.237
12010.2.164.238/3110.2.164.238 – 10.2.164.23910.2.164.239
12110.2.164.240/3110.2.164.240 – 10.2.164.24110.2.164.241
12210.2.164.242/3110.2.164.242 – 10.2.164.24310.2.164.243
12310.2.164.244/3110.2.164.244 – 10.2.164.24510.2.164.245
12410.2.164.246/3110.2.164.246 – 10.2.164.24710.2.164.247
12510.2.164.248/3110.2.164.248 – 10.2.164.24910.2.164.249
12610.2.164.250/3110.2.164.250 – 10.2.164.25110.2.164.251
12710.2.164.252/3110.2.164.252 – 10.2.164.25310.2.164.253
12810.2.164.254/3110.2.164.254 – 10.2.164.25510.2.164.255
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 →