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)10.167.120.0/24
network10.167.120.0/24
broadcast10.167.120.255
first host10.167.120.1
last host10.167.120.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.167.120.0/24
address00001010.10100111.01111000.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10100111.01111000.00000000
broadcast00001010.10100111.01111000.11111111
green = network part, grey = host part
hex0x0aa77800
decimal178747392
reverse dns0.120.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:7800

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.120.0/3110.167.120.0 – 10.167.120.110.167.120.1
210.167.120.2/3110.167.120.2 – 10.167.120.310.167.120.3
310.167.120.4/3110.167.120.4 – 10.167.120.510.167.120.5
410.167.120.6/3110.167.120.6 – 10.167.120.710.167.120.7
510.167.120.8/3110.167.120.8 – 10.167.120.910.167.120.9
610.167.120.10/3110.167.120.10 – 10.167.120.1110.167.120.11
710.167.120.12/3110.167.120.12 – 10.167.120.1310.167.120.13
810.167.120.14/3110.167.120.14 – 10.167.120.1510.167.120.15
910.167.120.16/3110.167.120.16 – 10.167.120.1710.167.120.17
1010.167.120.18/3110.167.120.18 – 10.167.120.1910.167.120.19
1110.167.120.20/3110.167.120.20 – 10.167.120.2110.167.120.21
1210.167.120.22/3110.167.120.22 – 10.167.120.2310.167.120.23
1310.167.120.24/3110.167.120.24 – 10.167.120.2510.167.120.25
1410.167.120.26/3110.167.120.26 – 10.167.120.2710.167.120.27
1510.167.120.28/3110.167.120.28 – 10.167.120.2910.167.120.29
1610.167.120.30/3110.167.120.30 – 10.167.120.3110.167.120.31
1710.167.120.32/3110.167.120.32 – 10.167.120.3310.167.120.33
1810.167.120.34/3110.167.120.34 – 10.167.120.3510.167.120.35
1910.167.120.36/3110.167.120.36 – 10.167.120.3710.167.120.37
2010.167.120.38/3110.167.120.38 – 10.167.120.3910.167.120.39
2110.167.120.40/3110.167.120.40 – 10.167.120.4110.167.120.41
2210.167.120.42/3110.167.120.42 – 10.167.120.4310.167.120.43
2310.167.120.44/3110.167.120.44 – 10.167.120.4510.167.120.45
2410.167.120.46/3110.167.120.46 – 10.167.120.4710.167.120.47
2510.167.120.48/3110.167.120.48 – 10.167.120.4910.167.120.49
2610.167.120.50/3110.167.120.50 – 10.167.120.5110.167.120.51
2710.167.120.52/3110.167.120.52 – 10.167.120.5310.167.120.53
2810.167.120.54/3110.167.120.54 – 10.167.120.5510.167.120.55
2910.167.120.56/3110.167.120.56 – 10.167.120.5710.167.120.57
3010.167.120.58/3110.167.120.58 – 10.167.120.5910.167.120.59
3110.167.120.60/3110.167.120.60 – 10.167.120.6110.167.120.61
3210.167.120.62/3110.167.120.62 – 10.167.120.6310.167.120.63
3310.167.120.64/3110.167.120.64 – 10.167.120.6510.167.120.65
3410.167.120.66/3110.167.120.66 – 10.167.120.6710.167.120.67
3510.167.120.68/3110.167.120.68 – 10.167.120.6910.167.120.69
3610.167.120.70/3110.167.120.70 – 10.167.120.7110.167.120.71
3710.167.120.72/3110.167.120.72 – 10.167.120.7310.167.120.73
3810.167.120.74/3110.167.120.74 – 10.167.120.7510.167.120.75
3910.167.120.76/3110.167.120.76 – 10.167.120.7710.167.120.77
4010.167.120.78/3110.167.120.78 – 10.167.120.7910.167.120.79
4110.167.120.80/3110.167.120.80 – 10.167.120.8110.167.120.81
4210.167.120.82/3110.167.120.82 – 10.167.120.8310.167.120.83
4310.167.120.84/3110.167.120.84 – 10.167.120.8510.167.120.85
4410.167.120.86/3110.167.120.86 – 10.167.120.8710.167.120.87
4510.167.120.88/3110.167.120.88 – 10.167.120.8910.167.120.89
4610.167.120.90/3110.167.120.90 – 10.167.120.9110.167.120.91
4710.167.120.92/3110.167.120.92 – 10.167.120.9310.167.120.93
4810.167.120.94/3110.167.120.94 – 10.167.120.9510.167.120.95
4910.167.120.96/3110.167.120.96 – 10.167.120.9710.167.120.97
5010.167.120.98/3110.167.120.98 – 10.167.120.9910.167.120.99
5110.167.120.100/3110.167.120.100 – 10.167.120.10110.167.120.101
5210.167.120.102/3110.167.120.102 – 10.167.120.10310.167.120.103
5310.167.120.104/3110.167.120.104 – 10.167.120.10510.167.120.105
5410.167.120.106/3110.167.120.106 – 10.167.120.10710.167.120.107
5510.167.120.108/3110.167.120.108 – 10.167.120.10910.167.120.109
5610.167.120.110/3110.167.120.110 – 10.167.120.11110.167.120.111
5710.167.120.112/3110.167.120.112 – 10.167.120.11310.167.120.113
5810.167.120.114/3110.167.120.114 – 10.167.120.11510.167.120.115
5910.167.120.116/3110.167.120.116 – 10.167.120.11710.167.120.117
6010.167.120.118/3110.167.120.118 – 10.167.120.11910.167.120.119
6110.167.120.120/3110.167.120.120 – 10.167.120.12110.167.120.121
6210.167.120.122/3110.167.120.122 – 10.167.120.12310.167.120.123
6310.167.120.124/3110.167.120.124 – 10.167.120.12510.167.120.125
6410.167.120.126/3110.167.120.126 – 10.167.120.12710.167.120.127
6510.167.120.128/3110.167.120.128 – 10.167.120.12910.167.120.129
6610.167.120.130/3110.167.120.130 – 10.167.120.13110.167.120.131
6710.167.120.132/3110.167.120.132 – 10.167.120.13310.167.120.133
6810.167.120.134/3110.167.120.134 – 10.167.120.13510.167.120.135
6910.167.120.136/3110.167.120.136 – 10.167.120.13710.167.120.137
7010.167.120.138/3110.167.120.138 – 10.167.120.13910.167.120.139
7110.167.120.140/3110.167.120.140 – 10.167.120.14110.167.120.141
7210.167.120.142/3110.167.120.142 – 10.167.120.14310.167.120.143
7310.167.120.144/3110.167.120.144 – 10.167.120.14510.167.120.145
7410.167.120.146/3110.167.120.146 – 10.167.120.14710.167.120.147
7510.167.120.148/3110.167.120.148 – 10.167.120.14910.167.120.149
7610.167.120.150/3110.167.120.150 – 10.167.120.15110.167.120.151
7710.167.120.152/3110.167.120.152 – 10.167.120.15310.167.120.153
7810.167.120.154/3110.167.120.154 – 10.167.120.15510.167.120.155
7910.167.120.156/3110.167.120.156 – 10.167.120.15710.167.120.157
8010.167.120.158/3110.167.120.158 – 10.167.120.15910.167.120.159
8110.167.120.160/3110.167.120.160 – 10.167.120.16110.167.120.161
8210.167.120.162/3110.167.120.162 – 10.167.120.16310.167.120.163
8310.167.120.164/3110.167.120.164 – 10.167.120.16510.167.120.165
8410.167.120.166/3110.167.120.166 – 10.167.120.16710.167.120.167
8510.167.120.168/3110.167.120.168 – 10.167.120.16910.167.120.169
8610.167.120.170/3110.167.120.170 – 10.167.120.17110.167.120.171
8710.167.120.172/3110.167.120.172 – 10.167.120.17310.167.120.173
8810.167.120.174/3110.167.120.174 – 10.167.120.17510.167.120.175
8910.167.120.176/3110.167.120.176 – 10.167.120.17710.167.120.177
9010.167.120.178/3110.167.120.178 – 10.167.120.17910.167.120.179
9110.167.120.180/3110.167.120.180 – 10.167.120.18110.167.120.181
9210.167.120.182/3110.167.120.182 – 10.167.120.18310.167.120.183
9310.167.120.184/3110.167.120.184 – 10.167.120.18510.167.120.185
9410.167.120.186/3110.167.120.186 – 10.167.120.18710.167.120.187
9510.167.120.188/3110.167.120.188 – 10.167.120.18910.167.120.189
9610.167.120.190/3110.167.120.190 – 10.167.120.19110.167.120.191
9710.167.120.192/3110.167.120.192 – 10.167.120.19310.167.120.193
9810.167.120.194/3110.167.120.194 – 10.167.120.19510.167.120.195
9910.167.120.196/3110.167.120.196 – 10.167.120.19710.167.120.197
10010.167.120.198/3110.167.120.198 – 10.167.120.19910.167.120.199
10110.167.120.200/3110.167.120.200 – 10.167.120.20110.167.120.201
10210.167.120.202/3110.167.120.202 – 10.167.120.20310.167.120.203
10310.167.120.204/3110.167.120.204 – 10.167.120.20510.167.120.205
10410.167.120.206/3110.167.120.206 – 10.167.120.20710.167.120.207
10510.167.120.208/3110.167.120.208 – 10.167.120.20910.167.120.209
10610.167.120.210/3110.167.120.210 – 10.167.120.21110.167.120.211
10710.167.120.212/3110.167.120.212 – 10.167.120.21310.167.120.213
10810.167.120.214/3110.167.120.214 – 10.167.120.21510.167.120.215
10910.167.120.216/3110.167.120.216 – 10.167.120.21710.167.120.217
11010.167.120.218/3110.167.120.218 – 10.167.120.21910.167.120.219
11110.167.120.220/3110.167.120.220 – 10.167.120.22110.167.120.221
11210.167.120.222/3110.167.120.222 – 10.167.120.22310.167.120.223
11310.167.120.224/3110.167.120.224 – 10.167.120.22510.167.120.225
11410.167.120.226/3110.167.120.226 – 10.167.120.22710.167.120.227
11510.167.120.228/3110.167.120.228 – 10.167.120.22910.167.120.229
11610.167.120.230/3110.167.120.230 – 10.167.120.23110.167.120.231
11710.167.120.232/3110.167.120.232 – 10.167.120.23310.167.120.233
11810.167.120.234/3110.167.120.234 – 10.167.120.23510.167.120.235
11910.167.120.236/3110.167.120.236 – 10.167.120.23710.167.120.237
12010.167.120.238/3110.167.120.238 – 10.167.120.23910.167.120.239
12110.167.120.240/3110.167.120.240 – 10.167.120.24110.167.120.241
12210.167.120.242/3110.167.120.242 – 10.167.120.24310.167.120.243
12310.167.120.244/3110.167.120.244 – 10.167.120.24510.167.120.245
12410.167.120.246/3110.167.120.246 – 10.167.120.24710.167.120.247
12510.167.120.248/3110.167.120.248 – 10.167.120.24910.167.120.249
12610.167.120.250/3110.167.120.250 – 10.167.120.25110.167.120.251
12710.167.120.252/3110.167.120.252 – 10.167.120.25310.167.120.253
12810.167.120.254/3110.167.120.254 – 10.167.120.25510.167.120.255
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 →