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)10.72.35.0/24
network10.72.35.0/24
broadcast10.72.35.255
first host10.72.35.1
last host10.72.35.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.72.35.0/24
address00001010.01001000.00100011.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001000.00100011.00000000
broadcast00001010.01001000.00100011.11111111
green = network part, grey = host part
hex0x0a482300
decimal172499712
reverse dns0.35.72.10.in-addr.arpa
ipv4-mapped::ffff:a48:2300

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.72.35.0/3110.72.35.0 – 10.72.35.110.72.35.1
210.72.35.2/3110.72.35.2 – 10.72.35.310.72.35.3
310.72.35.4/3110.72.35.4 – 10.72.35.510.72.35.5
410.72.35.6/3110.72.35.6 – 10.72.35.710.72.35.7
510.72.35.8/3110.72.35.8 – 10.72.35.910.72.35.9
610.72.35.10/3110.72.35.10 – 10.72.35.1110.72.35.11
710.72.35.12/3110.72.35.12 – 10.72.35.1310.72.35.13
810.72.35.14/3110.72.35.14 – 10.72.35.1510.72.35.15
910.72.35.16/3110.72.35.16 – 10.72.35.1710.72.35.17
1010.72.35.18/3110.72.35.18 – 10.72.35.1910.72.35.19
1110.72.35.20/3110.72.35.20 – 10.72.35.2110.72.35.21
1210.72.35.22/3110.72.35.22 – 10.72.35.2310.72.35.23
1310.72.35.24/3110.72.35.24 – 10.72.35.2510.72.35.25
1410.72.35.26/3110.72.35.26 – 10.72.35.2710.72.35.27
1510.72.35.28/3110.72.35.28 – 10.72.35.2910.72.35.29
1610.72.35.30/3110.72.35.30 – 10.72.35.3110.72.35.31
1710.72.35.32/3110.72.35.32 – 10.72.35.3310.72.35.33
1810.72.35.34/3110.72.35.34 – 10.72.35.3510.72.35.35
1910.72.35.36/3110.72.35.36 – 10.72.35.3710.72.35.37
2010.72.35.38/3110.72.35.38 – 10.72.35.3910.72.35.39
2110.72.35.40/3110.72.35.40 – 10.72.35.4110.72.35.41
2210.72.35.42/3110.72.35.42 – 10.72.35.4310.72.35.43
2310.72.35.44/3110.72.35.44 – 10.72.35.4510.72.35.45
2410.72.35.46/3110.72.35.46 – 10.72.35.4710.72.35.47
2510.72.35.48/3110.72.35.48 – 10.72.35.4910.72.35.49
2610.72.35.50/3110.72.35.50 – 10.72.35.5110.72.35.51
2710.72.35.52/3110.72.35.52 – 10.72.35.5310.72.35.53
2810.72.35.54/3110.72.35.54 – 10.72.35.5510.72.35.55
2910.72.35.56/3110.72.35.56 – 10.72.35.5710.72.35.57
3010.72.35.58/3110.72.35.58 – 10.72.35.5910.72.35.59
3110.72.35.60/3110.72.35.60 – 10.72.35.6110.72.35.61
3210.72.35.62/3110.72.35.62 – 10.72.35.6310.72.35.63
3310.72.35.64/3110.72.35.64 – 10.72.35.6510.72.35.65
3410.72.35.66/3110.72.35.66 – 10.72.35.6710.72.35.67
3510.72.35.68/3110.72.35.68 – 10.72.35.6910.72.35.69
3610.72.35.70/3110.72.35.70 – 10.72.35.7110.72.35.71
3710.72.35.72/3110.72.35.72 – 10.72.35.7310.72.35.73
3810.72.35.74/3110.72.35.74 – 10.72.35.7510.72.35.75
3910.72.35.76/3110.72.35.76 – 10.72.35.7710.72.35.77
4010.72.35.78/3110.72.35.78 – 10.72.35.7910.72.35.79
4110.72.35.80/3110.72.35.80 – 10.72.35.8110.72.35.81
4210.72.35.82/3110.72.35.82 – 10.72.35.8310.72.35.83
4310.72.35.84/3110.72.35.84 – 10.72.35.8510.72.35.85
4410.72.35.86/3110.72.35.86 – 10.72.35.8710.72.35.87
4510.72.35.88/3110.72.35.88 – 10.72.35.8910.72.35.89
4610.72.35.90/3110.72.35.90 – 10.72.35.9110.72.35.91
4710.72.35.92/3110.72.35.92 – 10.72.35.9310.72.35.93
4810.72.35.94/3110.72.35.94 – 10.72.35.9510.72.35.95
4910.72.35.96/3110.72.35.96 – 10.72.35.9710.72.35.97
5010.72.35.98/3110.72.35.98 – 10.72.35.9910.72.35.99
5110.72.35.100/3110.72.35.100 – 10.72.35.10110.72.35.101
5210.72.35.102/3110.72.35.102 – 10.72.35.10310.72.35.103
5310.72.35.104/3110.72.35.104 – 10.72.35.10510.72.35.105
5410.72.35.106/3110.72.35.106 – 10.72.35.10710.72.35.107
5510.72.35.108/3110.72.35.108 – 10.72.35.10910.72.35.109
5610.72.35.110/3110.72.35.110 – 10.72.35.11110.72.35.111
5710.72.35.112/3110.72.35.112 – 10.72.35.11310.72.35.113
5810.72.35.114/3110.72.35.114 – 10.72.35.11510.72.35.115
5910.72.35.116/3110.72.35.116 – 10.72.35.11710.72.35.117
6010.72.35.118/3110.72.35.118 – 10.72.35.11910.72.35.119
6110.72.35.120/3110.72.35.120 – 10.72.35.12110.72.35.121
6210.72.35.122/3110.72.35.122 – 10.72.35.12310.72.35.123
6310.72.35.124/3110.72.35.124 – 10.72.35.12510.72.35.125
6410.72.35.126/3110.72.35.126 – 10.72.35.12710.72.35.127
6510.72.35.128/3110.72.35.128 – 10.72.35.12910.72.35.129
6610.72.35.130/3110.72.35.130 – 10.72.35.13110.72.35.131
6710.72.35.132/3110.72.35.132 – 10.72.35.13310.72.35.133
6810.72.35.134/3110.72.35.134 – 10.72.35.13510.72.35.135
6910.72.35.136/3110.72.35.136 – 10.72.35.13710.72.35.137
7010.72.35.138/3110.72.35.138 – 10.72.35.13910.72.35.139
7110.72.35.140/3110.72.35.140 – 10.72.35.14110.72.35.141
7210.72.35.142/3110.72.35.142 – 10.72.35.14310.72.35.143
7310.72.35.144/3110.72.35.144 – 10.72.35.14510.72.35.145
7410.72.35.146/3110.72.35.146 – 10.72.35.14710.72.35.147
7510.72.35.148/3110.72.35.148 – 10.72.35.14910.72.35.149
7610.72.35.150/3110.72.35.150 – 10.72.35.15110.72.35.151
7710.72.35.152/3110.72.35.152 – 10.72.35.15310.72.35.153
7810.72.35.154/3110.72.35.154 – 10.72.35.15510.72.35.155
7910.72.35.156/3110.72.35.156 – 10.72.35.15710.72.35.157
8010.72.35.158/3110.72.35.158 – 10.72.35.15910.72.35.159
8110.72.35.160/3110.72.35.160 – 10.72.35.16110.72.35.161
8210.72.35.162/3110.72.35.162 – 10.72.35.16310.72.35.163
8310.72.35.164/3110.72.35.164 – 10.72.35.16510.72.35.165
8410.72.35.166/3110.72.35.166 – 10.72.35.16710.72.35.167
8510.72.35.168/3110.72.35.168 – 10.72.35.16910.72.35.169
8610.72.35.170/3110.72.35.170 – 10.72.35.17110.72.35.171
8710.72.35.172/3110.72.35.172 – 10.72.35.17310.72.35.173
8810.72.35.174/3110.72.35.174 – 10.72.35.17510.72.35.175
8910.72.35.176/3110.72.35.176 – 10.72.35.17710.72.35.177
9010.72.35.178/3110.72.35.178 – 10.72.35.17910.72.35.179
9110.72.35.180/3110.72.35.180 – 10.72.35.18110.72.35.181
9210.72.35.182/3110.72.35.182 – 10.72.35.18310.72.35.183
9310.72.35.184/3110.72.35.184 – 10.72.35.18510.72.35.185
9410.72.35.186/3110.72.35.186 – 10.72.35.18710.72.35.187
9510.72.35.188/3110.72.35.188 – 10.72.35.18910.72.35.189
9610.72.35.190/3110.72.35.190 – 10.72.35.19110.72.35.191
9710.72.35.192/3110.72.35.192 – 10.72.35.19310.72.35.193
9810.72.35.194/3110.72.35.194 – 10.72.35.19510.72.35.195
9910.72.35.196/3110.72.35.196 – 10.72.35.19710.72.35.197
10010.72.35.198/3110.72.35.198 – 10.72.35.19910.72.35.199
10110.72.35.200/3110.72.35.200 – 10.72.35.20110.72.35.201
10210.72.35.202/3110.72.35.202 – 10.72.35.20310.72.35.203
10310.72.35.204/3110.72.35.204 – 10.72.35.20510.72.35.205
10410.72.35.206/3110.72.35.206 – 10.72.35.20710.72.35.207
10510.72.35.208/3110.72.35.208 – 10.72.35.20910.72.35.209
10610.72.35.210/3110.72.35.210 – 10.72.35.21110.72.35.211
10710.72.35.212/3110.72.35.212 – 10.72.35.21310.72.35.213
10810.72.35.214/3110.72.35.214 – 10.72.35.21510.72.35.215
10910.72.35.216/3110.72.35.216 – 10.72.35.21710.72.35.217
11010.72.35.218/3110.72.35.218 – 10.72.35.21910.72.35.219
11110.72.35.220/3110.72.35.220 – 10.72.35.22110.72.35.221
11210.72.35.222/3110.72.35.222 – 10.72.35.22310.72.35.223
11310.72.35.224/3110.72.35.224 – 10.72.35.22510.72.35.225
11410.72.35.226/3110.72.35.226 – 10.72.35.22710.72.35.227
11510.72.35.228/3110.72.35.228 – 10.72.35.22910.72.35.229
11610.72.35.230/3110.72.35.230 – 10.72.35.23110.72.35.231
11710.72.35.232/3110.72.35.232 – 10.72.35.23310.72.35.233
11810.72.35.234/3110.72.35.234 – 10.72.35.23510.72.35.235
11910.72.35.236/3110.72.35.236 – 10.72.35.23710.72.35.237
12010.72.35.238/3110.72.35.238 – 10.72.35.23910.72.35.239
12110.72.35.240/3110.72.35.240 – 10.72.35.24110.72.35.241
12210.72.35.242/3110.72.35.242 – 10.72.35.24310.72.35.243
12310.72.35.244/3110.72.35.244 – 10.72.35.24510.72.35.245
12410.72.35.246/3110.72.35.246 – 10.72.35.24710.72.35.247
12510.72.35.248/3110.72.35.248 – 10.72.35.24910.72.35.249
12610.72.35.250/3110.72.35.250 – 10.72.35.25110.72.35.251
12710.72.35.252/3110.72.35.252 – 10.72.35.25310.72.35.253
12810.72.35.254/3110.72.35.254 – 10.72.35.25510.72.35.255
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 →