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
private IP (RFC 1918)10.131.124.0/24
network10.131.124.0/24
broadcast10.131.124.255
first host10.131.124.1
last host10.131.124.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.131.124.0/24
address00001010.10000011.01111100.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10000011.01111100.00000000
broadcast00001010.10000011.01111100.11111111
green = network part, grey = host part
hex0x0a837c00
decimal176389120
reverse dns0.124.131.10.in-addr.arpa
ipv4-mapped::ffff:a83:7c00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.131.124.0/3110.131.124.0 – 10.131.124.110.131.124.1
210.131.124.2/3110.131.124.2 – 10.131.124.310.131.124.3
310.131.124.4/3110.131.124.4 – 10.131.124.510.131.124.5
410.131.124.6/3110.131.124.6 – 10.131.124.710.131.124.7
510.131.124.8/3110.131.124.8 – 10.131.124.910.131.124.9
610.131.124.10/3110.131.124.10 – 10.131.124.1110.131.124.11
710.131.124.12/3110.131.124.12 – 10.131.124.1310.131.124.13
810.131.124.14/3110.131.124.14 – 10.131.124.1510.131.124.15
910.131.124.16/3110.131.124.16 – 10.131.124.1710.131.124.17
1010.131.124.18/3110.131.124.18 – 10.131.124.1910.131.124.19
1110.131.124.20/3110.131.124.20 – 10.131.124.2110.131.124.21
1210.131.124.22/3110.131.124.22 – 10.131.124.2310.131.124.23
1310.131.124.24/3110.131.124.24 – 10.131.124.2510.131.124.25
1410.131.124.26/3110.131.124.26 – 10.131.124.2710.131.124.27
1510.131.124.28/3110.131.124.28 – 10.131.124.2910.131.124.29
1610.131.124.30/3110.131.124.30 – 10.131.124.3110.131.124.31
1710.131.124.32/3110.131.124.32 – 10.131.124.3310.131.124.33
1810.131.124.34/3110.131.124.34 – 10.131.124.3510.131.124.35
1910.131.124.36/3110.131.124.36 – 10.131.124.3710.131.124.37
2010.131.124.38/3110.131.124.38 – 10.131.124.3910.131.124.39
2110.131.124.40/3110.131.124.40 – 10.131.124.4110.131.124.41
2210.131.124.42/3110.131.124.42 – 10.131.124.4310.131.124.43
2310.131.124.44/3110.131.124.44 – 10.131.124.4510.131.124.45
2410.131.124.46/3110.131.124.46 – 10.131.124.4710.131.124.47
2510.131.124.48/3110.131.124.48 – 10.131.124.4910.131.124.49
2610.131.124.50/3110.131.124.50 – 10.131.124.5110.131.124.51
2710.131.124.52/3110.131.124.52 – 10.131.124.5310.131.124.53
2810.131.124.54/3110.131.124.54 – 10.131.124.5510.131.124.55
2910.131.124.56/3110.131.124.56 – 10.131.124.5710.131.124.57
3010.131.124.58/3110.131.124.58 – 10.131.124.5910.131.124.59
3110.131.124.60/3110.131.124.60 – 10.131.124.6110.131.124.61
3210.131.124.62/3110.131.124.62 – 10.131.124.6310.131.124.63
3310.131.124.64/3110.131.124.64 – 10.131.124.6510.131.124.65
3410.131.124.66/3110.131.124.66 – 10.131.124.6710.131.124.67
3510.131.124.68/3110.131.124.68 – 10.131.124.6910.131.124.69
3610.131.124.70/3110.131.124.70 – 10.131.124.7110.131.124.71
3710.131.124.72/3110.131.124.72 – 10.131.124.7310.131.124.73
3810.131.124.74/3110.131.124.74 – 10.131.124.7510.131.124.75
3910.131.124.76/3110.131.124.76 – 10.131.124.7710.131.124.77
4010.131.124.78/3110.131.124.78 – 10.131.124.7910.131.124.79
4110.131.124.80/3110.131.124.80 – 10.131.124.8110.131.124.81
4210.131.124.82/3110.131.124.82 – 10.131.124.8310.131.124.83
4310.131.124.84/3110.131.124.84 – 10.131.124.8510.131.124.85
4410.131.124.86/3110.131.124.86 – 10.131.124.8710.131.124.87
4510.131.124.88/3110.131.124.88 – 10.131.124.8910.131.124.89
4610.131.124.90/3110.131.124.90 – 10.131.124.9110.131.124.91
4710.131.124.92/3110.131.124.92 – 10.131.124.9310.131.124.93
4810.131.124.94/3110.131.124.94 – 10.131.124.9510.131.124.95
4910.131.124.96/3110.131.124.96 – 10.131.124.9710.131.124.97
5010.131.124.98/3110.131.124.98 – 10.131.124.9910.131.124.99
5110.131.124.100/3110.131.124.100 – 10.131.124.10110.131.124.101
5210.131.124.102/3110.131.124.102 – 10.131.124.10310.131.124.103
5310.131.124.104/3110.131.124.104 – 10.131.124.10510.131.124.105
5410.131.124.106/3110.131.124.106 – 10.131.124.10710.131.124.107
5510.131.124.108/3110.131.124.108 – 10.131.124.10910.131.124.109
5610.131.124.110/3110.131.124.110 – 10.131.124.11110.131.124.111
5710.131.124.112/3110.131.124.112 – 10.131.124.11310.131.124.113
5810.131.124.114/3110.131.124.114 – 10.131.124.11510.131.124.115
5910.131.124.116/3110.131.124.116 – 10.131.124.11710.131.124.117
6010.131.124.118/3110.131.124.118 – 10.131.124.11910.131.124.119
6110.131.124.120/3110.131.124.120 – 10.131.124.12110.131.124.121
6210.131.124.122/3110.131.124.122 – 10.131.124.12310.131.124.123
6310.131.124.124/3110.131.124.124 – 10.131.124.12510.131.124.125
6410.131.124.126/3110.131.124.126 – 10.131.124.12710.131.124.127
6510.131.124.128/3110.131.124.128 – 10.131.124.12910.131.124.129
6610.131.124.130/3110.131.124.130 – 10.131.124.13110.131.124.131
6710.131.124.132/3110.131.124.132 – 10.131.124.13310.131.124.133
6810.131.124.134/3110.131.124.134 – 10.131.124.13510.131.124.135
6910.131.124.136/3110.131.124.136 – 10.131.124.13710.131.124.137
7010.131.124.138/3110.131.124.138 – 10.131.124.13910.131.124.139
7110.131.124.140/3110.131.124.140 – 10.131.124.14110.131.124.141
7210.131.124.142/3110.131.124.142 – 10.131.124.14310.131.124.143
7310.131.124.144/3110.131.124.144 – 10.131.124.14510.131.124.145
7410.131.124.146/3110.131.124.146 – 10.131.124.14710.131.124.147
7510.131.124.148/3110.131.124.148 – 10.131.124.14910.131.124.149
7610.131.124.150/3110.131.124.150 – 10.131.124.15110.131.124.151
7710.131.124.152/3110.131.124.152 – 10.131.124.15310.131.124.153
7810.131.124.154/3110.131.124.154 – 10.131.124.15510.131.124.155
7910.131.124.156/3110.131.124.156 – 10.131.124.15710.131.124.157
8010.131.124.158/3110.131.124.158 – 10.131.124.15910.131.124.159
8110.131.124.160/3110.131.124.160 – 10.131.124.16110.131.124.161
8210.131.124.162/3110.131.124.162 – 10.131.124.16310.131.124.163
8310.131.124.164/3110.131.124.164 – 10.131.124.16510.131.124.165
8410.131.124.166/3110.131.124.166 – 10.131.124.16710.131.124.167
8510.131.124.168/3110.131.124.168 – 10.131.124.16910.131.124.169
8610.131.124.170/3110.131.124.170 – 10.131.124.17110.131.124.171
8710.131.124.172/3110.131.124.172 – 10.131.124.17310.131.124.173
8810.131.124.174/3110.131.124.174 – 10.131.124.17510.131.124.175
8910.131.124.176/3110.131.124.176 – 10.131.124.17710.131.124.177
9010.131.124.178/3110.131.124.178 – 10.131.124.17910.131.124.179
9110.131.124.180/3110.131.124.180 – 10.131.124.18110.131.124.181
9210.131.124.182/3110.131.124.182 – 10.131.124.18310.131.124.183
9310.131.124.184/3110.131.124.184 – 10.131.124.18510.131.124.185
9410.131.124.186/3110.131.124.186 – 10.131.124.18710.131.124.187
9510.131.124.188/3110.131.124.188 – 10.131.124.18910.131.124.189
9610.131.124.190/3110.131.124.190 – 10.131.124.19110.131.124.191
9710.131.124.192/3110.131.124.192 – 10.131.124.19310.131.124.193
9810.131.124.194/3110.131.124.194 – 10.131.124.19510.131.124.195
9910.131.124.196/3110.131.124.196 – 10.131.124.19710.131.124.197
10010.131.124.198/3110.131.124.198 – 10.131.124.19910.131.124.199
10110.131.124.200/3110.131.124.200 – 10.131.124.20110.131.124.201
10210.131.124.202/3110.131.124.202 – 10.131.124.20310.131.124.203
10310.131.124.204/3110.131.124.204 – 10.131.124.20510.131.124.205
10410.131.124.206/3110.131.124.206 – 10.131.124.20710.131.124.207
10510.131.124.208/3110.131.124.208 – 10.131.124.20910.131.124.209
10610.131.124.210/3110.131.124.210 – 10.131.124.21110.131.124.211
10710.131.124.212/3110.131.124.212 – 10.131.124.21310.131.124.213
10810.131.124.214/3110.131.124.214 – 10.131.124.21510.131.124.215
10910.131.124.216/3110.131.124.216 – 10.131.124.21710.131.124.217
11010.131.124.218/3110.131.124.218 – 10.131.124.21910.131.124.219
11110.131.124.220/3110.131.124.220 – 10.131.124.22110.131.124.221
11210.131.124.222/3110.131.124.222 – 10.131.124.22310.131.124.223
11310.131.124.224/3110.131.124.224 – 10.131.124.22510.131.124.225
11410.131.124.226/3110.131.124.226 – 10.131.124.22710.131.124.227
11510.131.124.228/3110.131.124.228 – 10.131.124.22910.131.124.229
11610.131.124.230/3110.131.124.230 – 10.131.124.23110.131.124.231
11710.131.124.232/3110.131.124.232 – 10.131.124.23310.131.124.233
11810.131.124.234/3110.131.124.234 – 10.131.124.23510.131.124.235
11910.131.124.236/3110.131.124.236 – 10.131.124.23710.131.124.237
12010.131.124.238/3110.131.124.238 – 10.131.124.23910.131.124.239
12110.131.124.240/3110.131.124.240 – 10.131.124.24110.131.124.241
12210.131.124.242/3110.131.124.242 – 10.131.124.24310.131.124.243
12310.131.124.244/3110.131.124.244 – 10.131.124.24510.131.124.245
12410.131.124.246/3110.131.124.246 – 10.131.124.24710.131.124.247
12510.131.124.248/3110.131.124.248 – 10.131.124.24910.131.124.249
12610.131.124.250/3110.131.124.250 – 10.131.124.25110.131.124.251
12710.131.124.252/3110.131.124.252 – 10.131.124.25310.131.124.253
12810.131.124.254/3110.131.124.254 – 10.131.124.25510.131.124.255
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 →