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)10.13.231.0/24
network10.13.231.0/24
broadcast10.13.231.255
first host10.13.231.1
last host10.13.231.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.13.231.0/24
address00001010.00001101.11100111.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00001101.11100111.00000000
broadcast00001010.00001101.11100111.11111111
green = network part, grey = host part
hex0x0a0de700
decimal168683264
reverse dns0.231.13.10.in-addr.arpa
ipv4-mapped::ffff:a0d:e700

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.13.231.0/3110.13.231.0 – 10.13.231.110.13.231.1
210.13.231.2/3110.13.231.2 – 10.13.231.310.13.231.3
310.13.231.4/3110.13.231.4 – 10.13.231.510.13.231.5
410.13.231.6/3110.13.231.6 – 10.13.231.710.13.231.7
510.13.231.8/3110.13.231.8 – 10.13.231.910.13.231.9
610.13.231.10/3110.13.231.10 – 10.13.231.1110.13.231.11
710.13.231.12/3110.13.231.12 – 10.13.231.1310.13.231.13
810.13.231.14/3110.13.231.14 – 10.13.231.1510.13.231.15
910.13.231.16/3110.13.231.16 – 10.13.231.1710.13.231.17
1010.13.231.18/3110.13.231.18 – 10.13.231.1910.13.231.19
1110.13.231.20/3110.13.231.20 – 10.13.231.2110.13.231.21
1210.13.231.22/3110.13.231.22 – 10.13.231.2310.13.231.23
1310.13.231.24/3110.13.231.24 – 10.13.231.2510.13.231.25
1410.13.231.26/3110.13.231.26 – 10.13.231.2710.13.231.27
1510.13.231.28/3110.13.231.28 – 10.13.231.2910.13.231.29
1610.13.231.30/3110.13.231.30 – 10.13.231.3110.13.231.31
1710.13.231.32/3110.13.231.32 – 10.13.231.3310.13.231.33
1810.13.231.34/3110.13.231.34 – 10.13.231.3510.13.231.35
1910.13.231.36/3110.13.231.36 – 10.13.231.3710.13.231.37
2010.13.231.38/3110.13.231.38 – 10.13.231.3910.13.231.39
2110.13.231.40/3110.13.231.40 – 10.13.231.4110.13.231.41
2210.13.231.42/3110.13.231.42 – 10.13.231.4310.13.231.43
2310.13.231.44/3110.13.231.44 – 10.13.231.4510.13.231.45
2410.13.231.46/3110.13.231.46 – 10.13.231.4710.13.231.47
2510.13.231.48/3110.13.231.48 – 10.13.231.4910.13.231.49
2610.13.231.50/3110.13.231.50 – 10.13.231.5110.13.231.51
2710.13.231.52/3110.13.231.52 – 10.13.231.5310.13.231.53
2810.13.231.54/3110.13.231.54 – 10.13.231.5510.13.231.55
2910.13.231.56/3110.13.231.56 – 10.13.231.5710.13.231.57
3010.13.231.58/3110.13.231.58 – 10.13.231.5910.13.231.59
3110.13.231.60/3110.13.231.60 – 10.13.231.6110.13.231.61
3210.13.231.62/3110.13.231.62 – 10.13.231.6310.13.231.63
3310.13.231.64/3110.13.231.64 – 10.13.231.6510.13.231.65
3410.13.231.66/3110.13.231.66 – 10.13.231.6710.13.231.67
3510.13.231.68/3110.13.231.68 – 10.13.231.6910.13.231.69
3610.13.231.70/3110.13.231.70 – 10.13.231.7110.13.231.71
3710.13.231.72/3110.13.231.72 – 10.13.231.7310.13.231.73
3810.13.231.74/3110.13.231.74 – 10.13.231.7510.13.231.75
3910.13.231.76/3110.13.231.76 – 10.13.231.7710.13.231.77
4010.13.231.78/3110.13.231.78 – 10.13.231.7910.13.231.79
4110.13.231.80/3110.13.231.80 – 10.13.231.8110.13.231.81
4210.13.231.82/3110.13.231.82 – 10.13.231.8310.13.231.83
4310.13.231.84/3110.13.231.84 – 10.13.231.8510.13.231.85
4410.13.231.86/3110.13.231.86 – 10.13.231.8710.13.231.87
4510.13.231.88/3110.13.231.88 – 10.13.231.8910.13.231.89
4610.13.231.90/3110.13.231.90 – 10.13.231.9110.13.231.91
4710.13.231.92/3110.13.231.92 – 10.13.231.9310.13.231.93
4810.13.231.94/3110.13.231.94 – 10.13.231.9510.13.231.95
4910.13.231.96/3110.13.231.96 – 10.13.231.9710.13.231.97
5010.13.231.98/3110.13.231.98 – 10.13.231.9910.13.231.99
5110.13.231.100/3110.13.231.100 – 10.13.231.10110.13.231.101
5210.13.231.102/3110.13.231.102 – 10.13.231.10310.13.231.103
5310.13.231.104/3110.13.231.104 – 10.13.231.10510.13.231.105
5410.13.231.106/3110.13.231.106 – 10.13.231.10710.13.231.107
5510.13.231.108/3110.13.231.108 – 10.13.231.10910.13.231.109
5610.13.231.110/3110.13.231.110 – 10.13.231.11110.13.231.111
5710.13.231.112/3110.13.231.112 – 10.13.231.11310.13.231.113
5810.13.231.114/3110.13.231.114 – 10.13.231.11510.13.231.115
5910.13.231.116/3110.13.231.116 – 10.13.231.11710.13.231.117
6010.13.231.118/3110.13.231.118 – 10.13.231.11910.13.231.119
6110.13.231.120/3110.13.231.120 – 10.13.231.12110.13.231.121
6210.13.231.122/3110.13.231.122 – 10.13.231.12310.13.231.123
6310.13.231.124/3110.13.231.124 – 10.13.231.12510.13.231.125
6410.13.231.126/3110.13.231.126 – 10.13.231.12710.13.231.127
6510.13.231.128/3110.13.231.128 – 10.13.231.12910.13.231.129
6610.13.231.130/3110.13.231.130 – 10.13.231.13110.13.231.131
6710.13.231.132/3110.13.231.132 – 10.13.231.13310.13.231.133
6810.13.231.134/3110.13.231.134 – 10.13.231.13510.13.231.135
6910.13.231.136/3110.13.231.136 – 10.13.231.13710.13.231.137
7010.13.231.138/3110.13.231.138 – 10.13.231.13910.13.231.139
7110.13.231.140/3110.13.231.140 – 10.13.231.14110.13.231.141
7210.13.231.142/3110.13.231.142 – 10.13.231.14310.13.231.143
7310.13.231.144/3110.13.231.144 – 10.13.231.14510.13.231.145
7410.13.231.146/3110.13.231.146 – 10.13.231.14710.13.231.147
7510.13.231.148/3110.13.231.148 – 10.13.231.14910.13.231.149
7610.13.231.150/3110.13.231.150 – 10.13.231.15110.13.231.151
7710.13.231.152/3110.13.231.152 – 10.13.231.15310.13.231.153
7810.13.231.154/3110.13.231.154 – 10.13.231.15510.13.231.155
7910.13.231.156/3110.13.231.156 – 10.13.231.15710.13.231.157
8010.13.231.158/3110.13.231.158 – 10.13.231.15910.13.231.159
8110.13.231.160/3110.13.231.160 – 10.13.231.16110.13.231.161
8210.13.231.162/3110.13.231.162 – 10.13.231.16310.13.231.163
8310.13.231.164/3110.13.231.164 – 10.13.231.16510.13.231.165
8410.13.231.166/3110.13.231.166 – 10.13.231.16710.13.231.167
8510.13.231.168/3110.13.231.168 – 10.13.231.16910.13.231.169
8610.13.231.170/3110.13.231.170 – 10.13.231.17110.13.231.171
8710.13.231.172/3110.13.231.172 – 10.13.231.17310.13.231.173
8810.13.231.174/3110.13.231.174 – 10.13.231.17510.13.231.175
8910.13.231.176/3110.13.231.176 – 10.13.231.17710.13.231.177
9010.13.231.178/3110.13.231.178 – 10.13.231.17910.13.231.179
9110.13.231.180/3110.13.231.180 – 10.13.231.18110.13.231.181
9210.13.231.182/3110.13.231.182 – 10.13.231.18310.13.231.183
9310.13.231.184/3110.13.231.184 – 10.13.231.18510.13.231.185
9410.13.231.186/3110.13.231.186 – 10.13.231.18710.13.231.187
9510.13.231.188/3110.13.231.188 – 10.13.231.18910.13.231.189
9610.13.231.190/3110.13.231.190 – 10.13.231.19110.13.231.191
9710.13.231.192/3110.13.231.192 – 10.13.231.19310.13.231.193
9810.13.231.194/3110.13.231.194 – 10.13.231.19510.13.231.195
9910.13.231.196/3110.13.231.196 – 10.13.231.19710.13.231.197
10010.13.231.198/3110.13.231.198 – 10.13.231.19910.13.231.199
10110.13.231.200/3110.13.231.200 – 10.13.231.20110.13.231.201
10210.13.231.202/3110.13.231.202 – 10.13.231.20310.13.231.203
10310.13.231.204/3110.13.231.204 – 10.13.231.20510.13.231.205
10410.13.231.206/3110.13.231.206 – 10.13.231.20710.13.231.207
10510.13.231.208/3110.13.231.208 – 10.13.231.20910.13.231.209
10610.13.231.210/3110.13.231.210 – 10.13.231.21110.13.231.211
10710.13.231.212/3110.13.231.212 – 10.13.231.21310.13.231.213
10810.13.231.214/3110.13.231.214 – 10.13.231.21510.13.231.215
10910.13.231.216/3110.13.231.216 – 10.13.231.21710.13.231.217
11010.13.231.218/3110.13.231.218 – 10.13.231.21910.13.231.219
11110.13.231.220/3110.13.231.220 – 10.13.231.22110.13.231.221
11210.13.231.222/3110.13.231.222 – 10.13.231.22310.13.231.223
11310.13.231.224/3110.13.231.224 – 10.13.231.22510.13.231.225
11410.13.231.226/3110.13.231.226 – 10.13.231.22710.13.231.227
11510.13.231.228/3110.13.231.228 – 10.13.231.22910.13.231.229
11610.13.231.230/3110.13.231.230 – 10.13.231.23110.13.231.231
11710.13.231.232/3110.13.231.232 – 10.13.231.23310.13.231.233
11810.13.231.234/3110.13.231.234 – 10.13.231.23510.13.231.235
11910.13.231.236/3110.13.231.236 – 10.13.231.23710.13.231.237
12010.13.231.238/3110.13.231.238 – 10.13.231.23910.13.231.239
12110.13.231.240/3110.13.231.240 – 10.13.231.24110.13.231.241
12210.13.231.242/3110.13.231.242 – 10.13.231.24310.13.231.243
12310.13.231.244/3110.13.231.244 – 10.13.231.24510.13.231.245
12410.13.231.246/3110.13.231.246 – 10.13.231.24710.13.231.247
12510.13.231.248/3110.13.231.248 – 10.13.231.24910.13.231.249
12610.13.231.250/3110.13.231.250 – 10.13.231.25110.13.231.251
12710.13.231.252/3110.13.231.252 – 10.13.231.25310.13.231.253
12810.13.231.254/3110.13.231.254 – 10.13.231.25510.13.231.255
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 →