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)10.36.187.0/24
network10.36.187.0/24
broadcast10.36.187.255
first host10.36.187.1
last host10.36.187.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.36.187.0/24
address00001010.00100100.10111011.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00100100.10111011.00000000
broadcast00001010.00100100.10111011.11111111
green = network part, grey = host part
hex0x0a24bb00
decimal170179328
reverse dns0.187.36.10.in-addr.arpa
ipv4-mapped::ffff:a24:bb00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.36.187.0/3110.36.187.0 – 10.36.187.110.36.187.1
210.36.187.2/3110.36.187.2 – 10.36.187.310.36.187.3
310.36.187.4/3110.36.187.4 – 10.36.187.510.36.187.5
410.36.187.6/3110.36.187.6 – 10.36.187.710.36.187.7
510.36.187.8/3110.36.187.8 – 10.36.187.910.36.187.9
610.36.187.10/3110.36.187.10 – 10.36.187.1110.36.187.11
710.36.187.12/3110.36.187.12 – 10.36.187.1310.36.187.13
810.36.187.14/3110.36.187.14 – 10.36.187.1510.36.187.15
910.36.187.16/3110.36.187.16 – 10.36.187.1710.36.187.17
1010.36.187.18/3110.36.187.18 – 10.36.187.1910.36.187.19
1110.36.187.20/3110.36.187.20 – 10.36.187.2110.36.187.21
1210.36.187.22/3110.36.187.22 – 10.36.187.2310.36.187.23
1310.36.187.24/3110.36.187.24 – 10.36.187.2510.36.187.25
1410.36.187.26/3110.36.187.26 – 10.36.187.2710.36.187.27
1510.36.187.28/3110.36.187.28 – 10.36.187.2910.36.187.29
1610.36.187.30/3110.36.187.30 – 10.36.187.3110.36.187.31
1710.36.187.32/3110.36.187.32 – 10.36.187.3310.36.187.33
1810.36.187.34/3110.36.187.34 – 10.36.187.3510.36.187.35
1910.36.187.36/3110.36.187.36 – 10.36.187.3710.36.187.37
2010.36.187.38/3110.36.187.38 – 10.36.187.3910.36.187.39
2110.36.187.40/3110.36.187.40 – 10.36.187.4110.36.187.41
2210.36.187.42/3110.36.187.42 – 10.36.187.4310.36.187.43
2310.36.187.44/3110.36.187.44 – 10.36.187.4510.36.187.45
2410.36.187.46/3110.36.187.46 – 10.36.187.4710.36.187.47
2510.36.187.48/3110.36.187.48 – 10.36.187.4910.36.187.49
2610.36.187.50/3110.36.187.50 – 10.36.187.5110.36.187.51
2710.36.187.52/3110.36.187.52 – 10.36.187.5310.36.187.53
2810.36.187.54/3110.36.187.54 – 10.36.187.5510.36.187.55
2910.36.187.56/3110.36.187.56 – 10.36.187.5710.36.187.57
3010.36.187.58/3110.36.187.58 – 10.36.187.5910.36.187.59
3110.36.187.60/3110.36.187.60 – 10.36.187.6110.36.187.61
3210.36.187.62/3110.36.187.62 – 10.36.187.6310.36.187.63
3310.36.187.64/3110.36.187.64 – 10.36.187.6510.36.187.65
3410.36.187.66/3110.36.187.66 – 10.36.187.6710.36.187.67
3510.36.187.68/3110.36.187.68 – 10.36.187.6910.36.187.69
3610.36.187.70/3110.36.187.70 – 10.36.187.7110.36.187.71
3710.36.187.72/3110.36.187.72 – 10.36.187.7310.36.187.73
3810.36.187.74/3110.36.187.74 – 10.36.187.7510.36.187.75
3910.36.187.76/3110.36.187.76 – 10.36.187.7710.36.187.77
4010.36.187.78/3110.36.187.78 – 10.36.187.7910.36.187.79
4110.36.187.80/3110.36.187.80 – 10.36.187.8110.36.187.81
4210.36.187.82/3110.36.187.82 – 10.36.187.8310.36.187.83
4310.36.187.84/3110.36.187.84 – 10.36.187.8510.36.187.85
4410.36.187.86/3110.36.187.86 – 10.36.187.8710.36.187.87
4510.36.187.88/3110.36.187.88 – 10.36.187.8910.36.187.89
4610.36.187.90/3110.36.187.90 – 10.36.187.9110.36.187.91
4710.36.187.92/3110.36.187.92 – 10.36.187.9310.36.187.93
4810.36.187.94/3110.36.187.94 – 10.36.187.9510.36.187.95
4910.36.187.96/3110.36.187.96 – 10.36.187.9710.36.187.97
5010.36.187.98/3110.36.187.98 – 10.36.187.9910.36.187.99
5110.36.187.100/3110.36.187.100 – 10.36.187.10110.36.187.101
5210.36.187.102/3110.36.187.102 – 10.36.187.10310.36.187.103
5310.36.187.104/3110.36.187.104 – 10.36.187.10510.36.187.105
5410.36.187.106/3110.36.187.106 – 10.36.187.10710.36.187.107
5510.36.187.108/3110.36.187.108 – 10.36.187.10910.36.187.109
5610.36.187.110/3110.36.187.110 – 10.36.187.11110.36.187.111
5710.36.187.112/3110.36.187.112 – 10.36.187.11310.36.187.113
5810.36.187.114/3110.36.187.114 – 10.36.187.11510.36.187.115
5910.36.187.116/3110.36.187.116 – 10.36.187.11710.36.187.117
6010.36.187.118/3110.36.187.118 – 10.36.187.11910.36.187.119
6110.36.187.120/3110.36.187.120 – 10.36.187.12110.36.187.121
6210.36.187.122/3110.36.187.122 – 10.36.187.12310.36.187.123
6310.36.187.124/3110.36.187.124 – 10.36.187.12510.36.187.125
6410.36.187.126/3110.36.187.126 – 10.36.187.12710.36.187.127
6510.36.187.128/3110.36.187.128 – 10.36.187.12910.36.187.129
6610.36.187.130/3110.36.187.130 – 10.36.187.13110.36.187.131
6710.36.187.132/3110.36.187.132 – 10.36.187.13310.36.187.133
6810.36.187.134/3110.36.187.134 – 10.36.187.13510.36.187.135
6910.36.187.136/3110.36.187.136 – 10.36.187.13710.36.187.137
7010.36.187.138/3110.36.187.138 – 10.36.187.13910.36.187.139
7110.36.187.140/3110.36.187.140 – 10.36.187.14110.36.187.141
7210.36.187.142/3110.36.187.142 – 10.36.187.14310.36.187.143
7310.36.187.144/3110.36.187.144 – 10.36.187.14510.36.187.145
7410.36.187.146/3110.36.187.146 – 10.36.187.14710.36.187.147
7510.36.187.148/3110.36.187.148 – 10.36.187.14910.36.187.149
7610.36.187.150/3110.36.187.150 – 10.36.187.15110.36.187.151
7710.36.187.152/3110.36.187.152 – 10.36.187.15310.36.187.153
7810.36.187.154/3110.36.187.154 – 10.36.187.15510.36.187.155
7910.36.187.156/3110.36.187.156 – 10.36.187.15710.36.187.157
8010.36.187.158/3110.36.187.158 – 10.36.187.15910.36.187.159
8110.36.187.160/3110.36.187.160 – 10.36.187.16110.36.187.161
8210.36.187.162/3110.36.187.162 – 10.36.187.16310.36.187.163
8310.36.187.164/3110.36.187.164 – 10.36.187.16510.36.187.165
8410.36.187.166/3110.36.187.166 – 10.36.187.16710.36.187.167
8510.36.187.168/3110.36.187.168 – 10.36.187.16910.36.187.169
8610.36.187.170/3110.36.187.170 – 10.36.187.17110.36.187.171
8710.36.187.172/3110.36.187.172 – 10.36.187.17310.36.187.173
8810.36.187.174/3110.36.187.174 – 10.36.187.17510.36.187.175
8910.36.187.176/3110.36.187.176 – 10.36.187.17710.36.187.177
9010.36.187.178/3110.36.187.178 – 10.36.187.17910.36.187.179
9110.36.187.180/3110.36.187.180 – 10.36.187.18110.36.187.181
9210.36.187.182/3110.36.187.182 – 10.36.187.18310.36.187.183
9310.36.187.184/3110.36.187.184 – 10.36.187.18510.36.187.185
9410.36.187.186/3110.36.187.186 – 10.36.187.18710.36.187.187
9510.36.187.188/3110.36.187.188 – 10.36.187.18910.36.187.189
9610.36.187.190/3110.36.187.190 – 10.36.187.19110.36.187.191
9710.36.187.192/3110.36.187.192 – 10.36.187.19310.36.187.193
9810.36.187.194/3110.36.187.194 – 10.36.187.19510.36.187.195
9910.36.187.196/3110.36.187.196 – 10.36.187.19710.36.187.197
10010.36.187.198/3110.36.187.198 – 10.36.187.19910.36.187.199
10110.36.187.200/3110.36.187.200 – 10.36.187.20110.36.187.201
10210.36.187.202/3110.36.187.202 – 10.36.187.20310.36.187.203
10310.36.187.204/3110.36.187.204 – 10.36.187.20510.36.187.205
10410.36.187.206/3110.36.187.206 – 10.36.187.20710.36.187.207
10510.36.187.208/3110.36.187.208 – 10.36.187.20910.36.187.209
10610.36.187.210/3110.36.187.210 – 10.36.187.21110.36.187.211
10710.36.187.212/3110.36.187.212 – 10.36.187.21310.36.187.213
10810.36.187.214/3110.36.187.214 – 10.36.187.21510.36.187.215
10910.36.187.216/3110.36.187.216 – 10.36.187.21710.36.187.217
11010.36.187.218/3110.36.187.218 – 10.36.187.21910.36.187.219
11110.36.187.220/3110.36.187.220 – 10.36.187.22110.36.187.221
11210.36.187.222/3110.36.187.222 – 10.36.187.22310.36.187.223
11310.36.187.224/3110.36.187.224 – 10.36.187.22510.36.187.225
11410.36.187.226/3110.36.187.226 – 10.36.187.22710.36.187.227
11510.36.187.228/3110.36.187.228 – 10.36.187.22910.36.187.229
11610.36.187.230/3110.36.187.230 – 10.36.187.23110.36.187.231
11710.36.187.232/3110.36.187.232 – 10.36.187.23310.36.187.233
11810.36.187.234/3110.36.187.234 – 10.36.187.23510.36.187.235
11910.36.187.236/3110.36.187.236 – 10.36.187.23710.36.187.237
12010.36.187.238/3110.36.187.238 – 10.36.187.23910.36.187.239
12110.36.187.240/3110.36.187.240 – 10.36.187.24110.36.187.241
12210.36.187.242/3110.36.187.242 – 10.36.187.24310.36.187.243
12310.36.187.244/3110.36.187.244 – 10.36.187.24510.36.187.245
12410.36.187.246/3110.36.187.246 – 10.36.187.24710.36.187.247
12510.36.187.248/3110.36.187.248 – 10.36.187.24910.36.187.249
12610.36.187.250/3110.36.187.250 – 10.36.187.25110.36.187.251
12710.36.187.252/3110.36.187.252 – 10.36.187.25310.36.187.253
12810.36.187.254/3110.36.187.254 – 10.36.187.25510.36.187.255
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 →