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)10.167.204.0/24
network10.167.204.0/24
broadcast10.167.204.255
first host10.167.204.1
last host10.167.204.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.167.204.0/24
address00001010.10100111.11001100.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10100111.11001100.00000000
broadcast00001010.10100111.11001100.11111111
green = network part, grey = host part
hex0x0aa7cc00
decimal178768896
reverse dns0.204.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:cc00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.204.0/3110.167.204.0 – 10.167.204.110.167.204.1
210.167.204.2/3110.167.204.2 – 10.167.204.310.167.204.3
310.167.204.4/3110.167.204.4 – 10.167.204.510.167.204.5
410.167.204.6/3110.167.204.6 – 10.167.204.710.167.204.7
510.167.204.8/3110.167.204.8 – 10.167.204.910.167.204.9
610.167.204.10/3110.167.204.10 – 10.167.204.1110.167.204.11
710.167.204.12/3110.167.204.12 – 10.167.204.1310.167.204.13
810.167.204.14/3110.167.204.14 – 10.167.204.1510.167.204.15
910.167.204.16/3110.167.204.16 – 10.167.204.1710.167.204.17
1010.167.204.18/3110.167.204.18 – 10.167.204.1910.167.204.19
1110.167.204.20/3110.167.204.20 – 10.167.204.2110.167.204.21
1210.167.204.22/3110.167.204.22 – 10.167.204.2310.167.204.23
1310.167.204.24/3110.167.204.24 – 10.167.204.2510.167.204.25
1410.167.204.26/3110.167.204.26 – 10.167.204.2710.167.204.27
1510.167.204.28/3110.167.204.28 – 10.167.204.2910.167.204.29
1610.167.204.30/3110.167.204.30 – 10.167.204.3110.167.204.31
1710.167.204.32/3110.167.204.32 – 10.167.204.3310.167.204.33
1810.167.204.34/3110.167.204.34 – 10.167.204.3510.167.204.35
1910.167.204.36/3110.167.204.36 – 10.167.204.3710.167.204.37
2010.167.204.38/3110.167.204.38 – 10.167.204.3910.167.204.39
2110.167.204.40/3110.167.204.40 – 10.167.204.4110.167.204.41
2210.167.204.42/3110.167.204.42 – 10.167.204.4310.167.204.43
2310.167.204.44/3110.167.204.44 – 10.167.204.4510.167.204.45
2410.167.204.46/3110.167.204.46 – 10.167.204.4710.167.204.47
2510.167.204.48/3110.167.204.48 – 10.167.204.4910.167.204.49
2610.167.204.50/3110.167.204.50 – 10.167.204.5110.167.204.51
2710.167.204.52/3110.167.204.52 – 10.167.204.5310.167.204.53
2810.167.204.54/3110.167.204.54 – 10.167.204.5510.167.204.55
2910.167.204.56/3110.167.204.56 – 10.167.204.5710.167.204.57
3010.167.204.58/3110.167.204.58 – 10.167.204.5910.167.204.59
3110.167.204.60/3110.167.204.60 – 10.167.204.6110.167.204.61
3210.167.204.62/3110.167.204.62 – 10.167.204.6310.167.204.63
3310.167.204.64/3110.167.204.64 – 10.167.204.6510.167.204.65
3410.167.204.66/3110.167.204.66 – 10.167.204.6710.167.204.67
3510.167.204.68/3110.167.204.68 – 10.167.204.6910.167.204.69
3610.167.204.70/3110.167.204.70 – 10.167.204.7110.167.204.71
3710.167.204.72/3110.167.204.72 – 10.167.204.7310.167.204.73
3810.167.204.74/3110.167.204.74 – 10.167.204.7510.167.204.75
3910.167.204.76/3110.167.204.76 – 10.167.204.7710.167.204.77
4010.167.204.78/3110.167.204.78 – 10.167.204.7910.167.204.79
4110.167.204.80/3110.167.204.80 – 10.167.204.8110.167.204.81
4210.167.204.82/3110.167.204.82 – 10.167.204.8310.167.204.83
4310.167.204.84/3110.167.204.84 – 10.167.204.8510.167.204.85
4410.167.204.86/3110.167.204.86 – 10.167.204.8710.167.204.87
4510.167.204.88/3110.167.204.88 – 10.167.204.8910.167.204.89
4610.167.204.90/3110.167.204.90 – 10.167.204.9110.167.204.91
4710.167.204.92/3110.167.204.92 – 10.167.204.9310.167.204.93
4810.167.204.94/3110.167.204.94 – 10.167.204.9510.167.204.95
4910.167.204.96/3110.167.204.96 – 10.167.204.9710.167.204.97
5010.167.204.98/3110.167.204.98 – 10.167.204.9910.167.204.99
5110.167.204.100/3110.167.204.100 – 10.167.204.10110.167.204.101
5210.167.204.102/3110.167.204.102 – 10.167.204.10310.167.204.103
5310.167.204.104/3110.167.204.104 – 10.167.204.10510.167.204.105
5410.167.204.106/3110.167.204.106 – 10.167.204.10710.167.204.107
5510.167.204.108/3110.167.204.108 – 10.167.204.10910.167.204.109
5610.167.204.110/3110.167.204.110 – 10.167.204.11110.167.204.111
5710.167.204.112/3110.167.204.112 – 10.167.204.11310.167.204.113
5810.167.204.114/3110.167.204.114 – 10.167.204.11510.167.204.115
5910.167.204.116/3110.167.204.116 – 10.167.204.11710.167.204.117
6010.167.204.118/3110.167.204.118 – 10.167.204.11910.167.204.119
6110.167.204.120/3110.167.204.120 – 10.167.204.12110.167.204.121
6210.167.204.122/3110.167.204.122 – 10.167.204.12310.167.204.123
6310.167.204.124/3110.167.204.124 – 10.167.204.12510.167.204.125
6410.167.204.126/3110.167.204.126 – 10.167.204.12710.167.204.127
6510.167.204.128/3110.167.204.128 – 10.167.204.12910.167.204.129
6610.167.204.130/3110.167.204.130 – 10.167.204.13110.167.204.131
6710.167.204.132/3110.167.204.132 – 10.167.204.13310.167.204.133
6810.167.204.134/3110.167.204.134 – 10.167.204.13510.167.204.135
6910.167.204.136/3110.167.204.136 – 10.167.204.13710.167.204.137
7010.167.204.138/3110.167.204.138 – 10.167.204.13910.167.204.139
7110.167.204.140/3110.167.204.140 – 10.167.204.14110.167.204.141
7210.167.204.142/3110.167.204.142 – 10.167.204.14310.167.204.143
7310.167.204.144/3110.167.204.144 – 10.167.204.14510.167.204.145
7410.167.204.146/3110.167.204.146 – 10.167.204.14710.167.204.147
7510.167.204.148/3110.167.204.148 – 10.167.204.14910.167.204.149
7610.167.204.150/3110.167.204.150 – 10.167.204.15110.167.204.151
7710.167.204.152/3110.167.204.152 – 10.167.204.15310.167.204.153
7810.167.204.154/3110.167.204.154 – 10.167.204.15510.167.204.155
7910.167.204.156/3110.167.204.156 – 10.167.204.15710.167.204.157
8010.167.204.158/3110.167.204.158 – 10.167.204.15910.167.204.159
8110.167.204.160/3110.167.204.160 – 10.167.204.16110.167.204.161
8210.167.204.162/3110.167.204.162 – 10.167.204.16310.167.204.163
8310.167.204.164/3110.167.204.164 – 10.167.204.16510.167.204.165
8410.167.204.166/3110.167.204.166 – 10.167.204.16710.167.204.167
8510.167.204.168/3110.167.204.168 – 10.167.204.16910.167.204.169
8610.167.204.170/3110.167.204.170 – 10.167.204.17110.167.204.171
8710.167.204.172/3110.167.204.172 – 10.167.204.17310.167.204.173
8810.167.204.174/3110.167.204.174 – 10.167.204.17510.167.204.175
8910.167.204.176/3110.167.204.176 – 10.167.204.17710.167.204.177
9010.167.204.178/3110.167.204.178 – 10.167.204.17910.167.204.179
9110.167.204.180/3110.167.204.180 – 10.167.204.18110.167.204.181
9210.167.204.182/3110.167.204.182 – 10.167.204.18310.167.204.183
9310.167.204.184/3110.167.204.184 – 10.167.204.18510.167.204.185
9410.167.204.186/3110.167.204.186 – 10.167.204.18710.167.204.187
9510.167.204.188/3110.167.204.188 – 10.167.204.18910.167.204.189
9610.167.204.190/3110.167.204.190 – 10.167.204.19110.167.204.191
9710.167.204.192/3110.167.204.192 – 10.167.204.19310.167.204.193
9810.167.204.194/3110.167.204.194 – 10.167.204.19510.167.204.195
9910.167.204.196/3110.167.204.196 – 10.167.204.19710.167.204.197
10010.167.204.198/3110.167.204.198 – 10.167.204.19910.167.204.199
10110.167.204.200/3110.167.204.200 – 10.167.204.20110.167.204.201
10210.167.204.202/3110.167.204.202 – 10.167.204.20310.167.204.203
10310.167.204.204/3110.167.204.204 – 10.167.204.20510.167.204.205
10410.167.204.206/3110.167.204.206 – 10.167.204.20710.167.204.207
10510.167.204.208/3110.167.204.208 – 10.167.204.20910.167.204.209
10610.167.204.210/3110.167.204.210 – 10.167.204.21110.167.204.211
10710.167.204.212/3110.167.204.212 – 10.167.204.21310.167.204.213
10810.167.204.214/3110.167.204.214 – 10.167.204.21510.167.204.215
10910.167.204.216/3110.167.204.216 – 10.167.204.21710.167.204.217
11010.167.204.218/3110.167.204.218 – 10.167.204.21910.167.204.219
11110.167.204.220/3110.167.204.220 – 10.167.204.22110.167.204.221
11210.167.204.222/3110.167.204.222 – 10.167.204.22310.167.204.223
11310.167.204.224/3110.167.204.224 – 10.167.204.22510.167.204.225
11410.167.204.226/3110.167.204.226 – 10.167.204.22710.167.204.227
11510.167.204.228/3110.167.204.228 – 10.167.204.22910.167.204.229
11610.167.204.230/3110.167.204.230 – 10.167.204.23110.167.204.231
11710.167.204.232/3110.167.204.232 – 10.167.204.23310.167.204.233
11810.167.204.234/3110.167.204.234 – 10.167.204.23510.167.204.235
11910.167.204.236/3110.167.204.236 – 10.167.204.23710.167.204.237
12010.167.204.238/3110.167.204.238 – 10.167.204.23910.167.204.239
12110.167.204.240/3110.167.204.240 – 10.167.204.24110.167.204.241
12210.167.204.242/3110.167.204.242 – 10.167.204.24310.167.204.243
12310.167.204.244/3110.167.204.244 – 10.167.204.24510.167.204.245
12410.167.204.246/3110.167.204.246 – 10.167.204.24710.167.204.247
12510.167.204.248/3110.167.204.248 – 10.167.204.24910.167.204.249
12610.167.204.250/3110.167.204.250 – 10.167.204.25110.167.204.251
12710.167.204.252/3110.167.204.252 – 10.167.204.25310.167.204.253
12810.167.204.254/3110.167.204.254 – 10.167.204.25510.167.204.255
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 →