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)10.72.167.0/24
network10.72.167.0/24
broadcast10.72.167.255
first host10.72.167.1
last host10.72.167.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.72.167.0/24
address00001010.01001000.10100111.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001000.10100111.00000000
broadcast00001010.01001000.10100111.11111111
green = network part, grey = host part
hex0x0a48a700
decimal172533504
reverse dns0.167.72.10.in-addr.arpa
ipv4-mapped::ffff:a48:a700

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.72.167.0/3110.72.167.0 – 10.72.167.110.72.167.1
210.72.167.2/3110.72.167.2 – 10.72.167.310.72.167.3
310.72.167.4/3110.72.167.4 – 10.72.167.510.72.167.5
410.72.167.6/3110.72.167.6 – 10.72.167.710.72.167.7
510.72.167.8/3110.72.167.8 – 10.72.167.910.72.167.9
610.72.167.10/3110.72.167.10 – 10.72.167.1110.72.167.11
710.72.167.12/3110.72.167.12 – 10.72.167.1310.72.167.13
810.72.167.14/3110.72.167.14 – 10.72.167.1510.72.167.15
910.72.167.16/3110.72.167.16 – 10.72.167.1710.72.167.17
1010.72.167.18/3110.72.167.18 – 10.72.167.1910.72.167.19
1110.72.167.20/3110.72.167.20 – 10.72.167.2110.72.167.21
1210.72.167.22/3110.72.167.22 – 10.72.167.2310.72.167.23
1310.72.167.24/3110.72.167.24 – 10.72.167.2510.72.167.25
1410.72.167.26/3110.72.167.26 – 10.72.167.2710.72.167.27
1510.72.167.28/3110.72.167.28 – 10.72.167.2910.72.167.29
1610.72.167.30/3110.72.167.30 – 10.72.167.3110.72.167.31
1710.72.167.32/3110.72.167.32 – 10.72.167.3310.72.167.33
1810.72.167.34/3110.72.167.34 – 10.72.167.3510.72.167.35
1910.72.167.36/3110.72.167.36 – 10.72.167.3710.72.167.37
2010.72.167.38/3110.72.167.38 – 10.72.167.3910.72.167.39
2110.72.167.40/3110.72.167.40 – 10.72.167.4110.72.167.41
2210.72.167.42/3110.72.167.42 – 10.72.167.4310.72.167.43
2310.72.167.44/3110.72.167.44 – 10.72.167.4510.72.167.45
2410.72.167.46/3110.72.167.46 – 10.72.167.4710.72.167.47
2510.72.167.48/3110.72.167.48 – 10.72.167.4910.72.167.49
2610.72.167.50/3110.72.167.50 – 10.72.167.5110.72.167.51
2710.72.167.52/3110.72.167.52 – 10.72.167.5310.72.167.53
2810.72.167.54/3110.72.167.54 – 10.72.167.5510.72.167.55
2910.72.167.56/3110.72.167.56 – 10.72.167.5710.72.167.57
3010.72.167.58/3110.72.167.58 – 10.72.167.5910.72.167.59
3110.72.167.60/3110.72.167.60 – 10.72.167.6110.72.167.61
3210.72.167.62/3110.72.167.62 – 10.72.167.6310.72.167.63
3310.72.167.64/3110.72.167.64 – 10.72.167.6510.72.167.65
3410.72.167.66/3110.72.167.66 – 10.72.167.6710.72.167.67
3510.72.167.68/3110.72.167.68 – 10.72.167.6910.72.167.69
3610.72.167.70/3110.72.167.70 – 10.72.167.7110.72.167.71
3710.72.167.72/3110.72.167.72 – 10.72.167.7310.72.167.73
3810.72.167.74/3110.72.167.74 – 10.72.167.7510.72.167.75
3910.72.167.76/3110.72.167.76 – 10.72.167.7710.72.167.77
4010.72.167.78/3110.72.167.78 – 10.72.167.7910.72.167.79
4110.72.167.80/3110.72.167.80 – 10.72.167.8110.72.167.81
4210.72.167.82/3110.72.167.82 – 10.72.167.8310.72.167.83
4310.72.167.84/3110.72.167.84 – 10.72.167.8510.72.167.85
4410.72.167.86/3110.72.167.86 – 10.72.167.8710.72.167.87
4510.72.167.88/3110.72.167.88 – 10.72.167.8910.72.167.89
4610.72.167.90/3110.72.167.90 – 10.72.167.9110.72.167.91
4710.72.167.92/3110.72.167.92 – 10.72.167.9310.72.167.93
4810.72.167.94/3110.72.167.94 – 10.72.167.9510.72.167.95
4910.72.167.96/3110.72.167.96 – 10.72.167.9710.72.167.97
5010.72.167.98/3110.72.167.98 – 10.72.167.9910.72.167.99
5110.72.167.100/3110.72.167.100 – 10.72.167.10110.72.167.101
5210.72.167.102/3110.72.167.102 – 10.72.167.10310.72.167.103
5310.72.167.104/3110.72.167.104 – 10.72.167.10510.72.167.105
5410.72.167.106/3110.72.167.106 – 10.72.167.10710.72.167.107
5510.72.167.108/3110.72.167.108 – 10.72.167.10910.72.167.109
5610.72.167.110/3110.72.167.110 – 10.72.167.11110.72.167.111
5710.72.167.112/3110.72.167.112 – 10.72.167.11310.72.167.113
5810.72.167.114/3110.72.167.114 – 10.72.167.11510.72.167.115
5910.72.167.116/3110.72.167.116 – 10.72.167.11710.72.167.117
6010.72.167.118/3110.72.167.118 – 10.72.167.11910.72.167.119
6110.72.167.120/3110.72.167.120 – 10.72.167.12110.72.167.121
6210.72.167.122/3110.72.167.122 – 10.72.167.12310.72.167.123
6310.72.167.124/3110.72.167.124 – 10.72.167.12510.72.167.125
6410.72.167.126/3110.72.167.126 – 10.72.167.12710.72.167.127
6510.72.167.128/3110.72.167.128 – 10.72.167.12910.72.167.129
6610.72.167.130/3110.72.167.130 – 10.72.167.13110.72.167.131
6710.72.167.132/3110.72.167.132 – 10.72.167.13310.72.167.133
6810.72.167.134/3110.72.167.134 – 10.72.167.13510.72.167.135
6910.72.167.136/3110.72.167.136 – 10.72.167.13710.72.167.137
7010.72.167.138/3110.72.167.138 – 10.72.167.13910.72.167.139
7110.72.167.140/3110.72.167.140 – 10.72.167.14110.72.167.141
7210.72.167.142/3110.72.167.142 – 10.72.167.14310.72.167.143
7310.72.167.144/3110.72.167.144 – 10.72.167.14510.72.167.145
7410.72.167.146/3110.72.167.146 – 10.72.167.14710.72.167.147
7510.72.167.148/3110.72.167.148 – 10.72.167.14910.72.167.149
7610.72.167.150/3110.72.167.150 – 10.72.167.15110.72.167.151
7710.72.167.152/3110.72.167.152 – 10.72.167.15310.72.167.153
7810.72.167.154/3110.72.167.154 – 10.72.167.15510.72.167.155
7910.72.167.156/3110.72.167.156 – 10.72.167.15710.72.167.157
8010.72.167.158/3110.72.167.158 – 10.72.167.15910.72.167.159
8110.72.167.160/3110.72.167.160 – 10.72.167.16110.72.167.161
8210.72.167.162/3110.72.167.162 – 10.72.167.16310.72.167.163
8310.72.167.164/3110.72.167.164 – 10.72.167.16510.72.167.165
8410.72.167.166/3110.72.167.166 – 10.72.167.16710.72.167.167
8510.72.167.168/3110.72.167.168 – 10.72.167.16910.72.167.169
8610.72.167.170/3110.72.167.170 – 10.72.167.17110.72.167.171
8710.72.167.172/3110.72.167.172 – 10.72.167.17310.72.167.173
8810.72.167.174/3110.72.167.174 – 10.72.167.17510.72.167.175
8910.72.167.176/3110.72.167.176 – 10.72.167.17710.72.167.177
9010.72.167.178/3110.72.167.178 – 10.72.167.17910.72.167.179
9110.72.167.180/3110.72.167.180 – 10.72.167.18110.72.167.181
9210.72.167.182/3110.72.167.182 – 10.72.167.18310.72.167.183
9310.72.167.184/3110.72.167.184 – 10.72.167.18510.72.167.185
9410.72.167.186/3110.72.167.186 – 10.72.167.18710.72.167.187
9510.72.167.188/3110.72.167.188 – 10.72.167.18910.72.167.189
9610.72.167.190/3110.72.167.190 – 10.72.167.19110.72.167.191
9710.72.167.192/3110.72.167.192 – 10.72.167.19310.72.167.193
9810.72.167.194/3110.72.167.194 – 10.72.167.19510.72.167.195
9910.72.167.196/3110.72.167.196 – 10.72.167.19710.72.167.197
10010.72.167.198/3110.72.167.198 – 10.72.167.19910.72.167.199
10110.72.167.200/3110.72.167.200 – 10.72.167.20110.72.167.201
10210.72.167.202/3110.72.167.202 – 10.72.167.20310.72.167.203
10310.72.167.204/3110.72.167.204 – 10.72.167.20510.72.167.205
10410.72.167.206/3110.72.167.206 – 10.72.167.20710.72.167.207
10510.72.167.208/3110.72.167.208 – 10.72.167.20910.72.167.209
10610.72.167.210/3110.72.167.210 – 10.72.167.21110.72.167.211
10710.72.167.212/3110.72.167.212 – 10.72.167.21310.72.167.213
10810.72.167.214/3110.72.167.214 – 10.72.167.21510.72.167.215
10910.72.167.216/3110.72.167.216 – 10.72.167.21710.72.167.217
11010.72.167.218/3110.72.167.218 – 10.72.167.21910.72.167.219
11110.72.167.220/3110.72.167.220 – 10.72.167.22110.72.167.221
11210.72.167.222/3110.72.167.222 – 10.72.167.22310.72.167.223
11310.72.167.224/3110.72.167.224 – 10.72.167.22510.72.167.225
11410.72.167.226/3110.72.167.226 – 10.72.167.22710.72.167.227
11510.72.167.228/3110.72.167.228 – 10.72.167.22910.72.167.229
11610.72.167.230/3110.72.167.230 – 10.72.167.23110.72.167.231
11710.72.167.232/3110.72.167.232 – 10.72.167.23310.72.167.233
11810.72.167.234/3110.72.167.234 – 10.72.167.23510.72.167.235
11910.72.167.236/3110.72.167.236 – 10.72.167.23710.72.167.237
12010.72.167.238/3110.72.167.238 – 10.72.167.23910.72.167.239
12110.72.167.240/3110.72.167.240 – 10.72.167.24110.72.167.241
12210.72.167.242/3110.72.167.242 – 10.72.167.24310.72.167.243
12310.72.167.244/3110.72.167.244 – 10.72.167.24510.72.167.245
12410.72.167.246/3110.72.167.246 – 10.72.167.24710.72.167.247
12510.72.167.248/3110.72.167.248 – 10.72.167.24910.72.167.249
12610.72.167.250/3110.72.167.250 – 10.72.167.25110.72.167.251
12710.72.167.252/3110.72.167.252 – 10.72.167.25310.72.167.253
12810.72.167.254/3110.72.167.254 – 10.72.167.25510.72.167.255
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 →