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)10.7.9.0/24
network10.7.9.0/24
broadcast10.7.9.255
first host10.7.9.1
last host10.7.9.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.7.9.0/24
address00001010.00000111.00001001.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000111.00001001.00000000
broadcast00001010.00000111.00001001.11111111
green = network part, grey = host part
hex0x0a070900
decimal168233216
reverse dns0.9.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:900

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.7.9.0/3110.7.9.0 – 10.7.9.110.7.9.1
210.7.9.2/3110.7.9.2 – 10.7.9.310.7.9.3
310.7.9.4/3110.7.9.4 – 10.7.9.510.7.9.5
410.7.9.6/3110.7.9.6 – 10.7.9.710.7.9.7
510.7.9.8/3110.7.9.8 – 10.7.9.910.7.9.9
610.7.9.10/3110.7.9.10 – 10.7.9.1110.7.9.11
710.7.9.12/3110.7.9.12 – 10.7.9.1310.7.9.13
810.7.9.14/3110.7.9.14 – 10.7.9.1510.7.9.15
910.7.9.16/3110.7.9.16 – 10.7.9.1710.7.9.17
1010.7.9.18/3110.7.9.18 – 10.7.9.1910.7.9.19
1110.7.9.20/3110.7.9.20 – 10.7.9.2110.7.9.21
1210.7.9.22/3110.7.9.22 – 10.7.9.2310.7.9.23
1310.7.9.24/3110.7.9.24 – 10.7.9.2510.7.9.25
1410.7.9.26/3110.7.9.26 – 10.7.9.2710.7.9.27
1510.7.9.28/3110.7.9.28 – 10.7.9.2910.7.9.29
1610.7.9.30/3110.7.9.30 – 10.7.9.3110.7.9.31
1710.7.9.32/3110.7.9.32 – 10.7.9.3310.7.9.33
1810.7.9.34/3110.7.9.34 – 10.7.9.3510.7.9.35
1910.7.9.36/3110.7.9.36 – 10.7.9.3710.7.9.37
2010.7.9.38/3110.7.9.38 – 10.7.9.3910.7.9.39
2110.7.9.40/3110.7.9.40 – 10.7.9.4110.7.9.41
2210.7.9.42/3110.7.9.42 – 10.7.9.4310.7.9.43
2310.7.9.44/3110.7.9.44 – 10.7.9.4510.7.9.45
2410.7.9.46/3110.7.9.46 – 10.7.9.4710.7.9.47
2510.7.9.48/3110.7.9.48 – 10.7.9.4910.7.9.49
2610.7.9.50/3110.7.9.50 – 10.7.9.5110.7.9.51
2710.7.9.52/3110.7.9.52 – 10.7.9.5310.7.9.53
2810.7.9.54/3110.7.9.54 – 10.7.9.5510.7.9.55
2910.7.9.56/3110.7.9.56 – 10.7.9.5710.7.9.57
3010.7.9.58/3110.7.9.58 – 10.7.9.5910.7.9.59
3110.7.9.60/3110.7.9.60 – 10.7.9.6110.7.9.61
3210.7.9.62/3110.7.9.62 – 10.7.9.6310.7.9.63
3310.7.9.64/3110.7.9.64 – 10.7.9.6510.7.9.65
3410.7.9.66/3110.7.9.66 – 10.7.9.6710.7.9.67
3510.7.9.68/3110.7.9.68 – 10.7.9.6910.7.9.69
3610.7.9.70/3110.7.9.70 – 10.7.9.7110.7.9.71
3710.7.9.72/3110.7.9.72 – 10.7.9.7310.7.9.73
3810.7.9.74/3110.7.9.74 – 10.7.9.7510.7.9.75
3910.7.9.76/3110.7.9.76 – 10.7.9.7710.7.9.77
4010.7.9.78/3110.7.9.78 – 10.7.9.7910.7.9.79
4110.7.9.80/3110.7.9.80 – 10.7.9.8110.7.9.81
4210.7.9.82/3110.7.9.82 – 10.7.9.8310.7.9.83
4310.7.9.84/3110.7.9.84 – 10.7.9.8510.7.9.85
4410.7.9.86/3110.7.9.86 – 10.7.9.8710.7.9.87
4510.7.9.88/3110.7.9.88 – 10.7.9.8910.7.9.89
4610.7.9.90/3110.7.9.90 – 10.7.9.9110.7.9.91
4710.7.9.92/3110.7.9.92 – 10.7.9.9310.7.9.93
4810.7.9.94/3110.7.9.94 – 10.7.9.9510.7.9.95
4910.7.9.96/3110.7.9.96 – 10.7.9.9710.7.9.97
5010.7.9.98/3110.7.9.98 – 10.7.9.9910.7.9.99
5110.7.9.100/3110.7.9.100 – 10.7.9.10110.7.9.101
5210.7.9.102/3110.7.9.102 – 10.7.9.10310.7.9.103
5310.7.9.104/3110.7.9.104 – 10.7.9.10510.7.9.105
5410.7.9.106/3110.7.9.106 – 10.7.9.10710.7.9.107
5510.7.9.108/3110.7.9.108 – 10.7.9.10910.7.9.109
5610.7.9.110/3110.7.9.110 – 10.7.9.11110.7.9.111
5710.7.9.112/3110.7.9.112 – 10.7.9.11310.7.9.113
5810.7.9.114/3110.7.9.114 – 10.7.9.11510.7.9.115
5910.7.9.116/3110.7.9.116 – 10.7.9.11710.7.9.117
6010.7.9.118/3110.7.9.118 – 10.7.9.11910.7.9.119
6110.7.9.120/3110.7.9.120 – 10.7.9.12110.7.9.121
6210.7.9.122/3110.7.9.122 – 10.7.9.12310.7.9.123
6310.7.9.124/3110.7.9.124 – 10.7.9.12510.7.9.125
6410.7.9.126/3110.7.9.126 – 10.7.9.12710.7.9.127
6510.7.9.128/3110.7.9.128 – 10.7.9.12910.7.9.129
6610.7.9.130/3110.7.9.130 – 10.7.9.13110.7.9.131
6710.7.9.132/3110.7.9.132 – 10.7.9.13310.7.9.133
6810.7.9.134/3110.7.9.134 – 10.7.9.13510.7.9.135
6910.7.9.136/3110.7.9.136 – 10.7.9.13710.7.9.137
7010.7.9.138/3110.7.9.138 – 10.7.9.13910.7.9.139
7110.7.9.140/3110.7.9.140 – 10.7.9.14110.7.9.141
7210.7.9.142/3110.7.9.142 – 10.7.9.14310.7.9.143
7310.7.9.144/3110.7.9.144 – 10.7.9.14510.7.9.145
7410.7.9.146/3110.7.9.146 – 10.7.9.14710.7.9.147
7510.7.9.148/3110.7.9.148 – 10.7.9.14910.7.9.149
7610.7.9.150/3110.7.9.150 – 10.7.9.15110.7.9.151
7710.7.9.152/3110.7.9.152 – 10.7.9.15310.7.9.153
7810.7.9.154/3110.7.9.154 – 10.7.9.15510.7.9.155
7910.7.9.156/3110.7.9.156 – 10.7.9.15710.7.9.157
8010.7.9.158/3110.7.9.158 – 10.7.9.15910.7.9.159
8110.7.9.160/3110.7.9.160 – 10.7.9.16110.7.9.161
8210.7.9.162/3110.7.9.162 – 10.7.9.16310.7.9.163
8310.7.9.164/3110.7.9.164 – 10.7.9.16510.7.9.165
8410.7.9.166/3110.7.9.166 – 10.7.9.16710.7.9.167
8510.7.9.168/3110.7.9.168 – 10.7.9.16910.7.9.169
8610.7.9.170/3110.7.9.170 – 10.7.9.17110.7.9.171
8710.7.9.172/3110.7.9.172 – 10.7.9.17310.7.9.173
8810.7.9.174/3110.7.9.174 – 10.7.9.17510.7.9.175
8910.7.9.176/3110.7.9.176 – 10.7.9.17710.7.9.177
9010.7.9.178/3110.7.9.178 – 10.7.9.17910.7.9.179
9110.7.9.180/3110.7.9.180 – 10.7.9.18110.7.9.181
9210.7.9.182/3110.7.9.182 – 10.7.9.18310.7.9.183
9310.7.9.184/3110.7.9.184 – 10.7.9.18510.7.9.185
9410.7.9.186/3110.7.9.186 – 10.7.9.18710.7.9.187
9510.7.9.188/3110.7.9.188 – 10.7.9.18910.7.9.189
9610.7.9.190/3110.7.9.190 – 10.7.9.19110.7.9.191
9710.7.9.192/3110.7.9.192 – 10.7.9.19310.7.9.193
9810.7.9.194/3110.7.9.194 – 10.7.9.19510.7.9.195
9910.7.9.196/3110.7.9.196 – 10.7.9.19710.7.9.197
10010.7.9.198/3110.7.9.198 – 10.7.9.19910.7.9.199
10110.7.9.200/3110.7.9.200 – 10.7.9.20110.7.9.201
10210.7.9.202/3110.7.9.202 – 10.7.9.20310.7.9.203
10310.7.9.204/3110.7.9.204 – 10.7.9.20510.7.9.205
10410.7.9.206/3110.7.9.206 – 10.7.9.20710.7.9.207
10510.7.9.208/3110.7.9.208 – 10.7.9.20910.7.9.209
10610.7.9.210/3110.7.9.210 – 10.7.9.21110.7.9.211
10710.7.9.212/3110.7.9.212 – 10.7.9.21310.7.9.213
10810.7.9.214/3110.7.9.214 – 10.7.9.21510.7.9.215
10910.7.9.216/3110.7.9.216 – 10.7.9.21710.7.9.217
11010.7.9.218/3110.7.9.218 – 10.7.9.21910.7.9.219
11110.7.9.220/3110.7.9.220 – 10.7.9.22110.7.9.221
11210.7.9.222/3110.7.9.222 – 10.7.9.22310.7.9.223
11310.7.9.224/3110.7.9.224 – 10.7.9.22510.7.9.225
11410.7.9.226/3110.7.9.226 – 10.7.9.22710.7.9.227
11510.7.9.228/3110.7.9.228 – 10.7.9.22910.7.9.229
11610.7.9.230/3110.7.9.230 – 10.7.9.23110.7.9.231
11710.7.9.232/3110.7.9.232 – 10.7.9.23310.7.9.233
11810.7.9.234/3110.7.9.234 – 10.7.9.23510.7.9.235
11910.7.9.236/3110.7.9.236 – 10.7.9.23710.7.9.237
12010.7.9.238/3110.7.9.238 – 10.7.9.23910.7.9.239
12110.7.9.240/3110.7.9.240 – 10.7.9.24110.7.9.241
12210.7.9.242/3110.7.9.242 – 10.7.9.24310.7.9.243
12310.7.9.244/3110.7.9.244 – 10.7.9.24510.7.9.245
12410.7.9.246/3110.7.9.246 – 10.7.9.24710.7.9.247
12510.7.9.248/3110.7.9.248 – 10.7.9.24910.7.9.249
12610.7.9.250/3110.7.9.250 – 10.7.9.25110.7.9.251
12710.7.9.252/3110.7.9.252 – 10.7.9.25310.7.9.253
12810.7.9.254/3110.7.9.254 – 10.7.9.25510.7.9.255
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 →