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)10.63.201.0/24
network10.63.201.0/24
broadcast10.63.201.255
first host10.63.201.1
last host10.63.201.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.63.201.0/24
address00001010.00111111.11001001.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00111111.11001001.00000000
broadcast00001010.00111111.11001001.11111111
green = network part, grey = host part
hex0x0a3fc900
decimal171952384
reverse dns0.201.63.10.in-addr.arpa
ipv4-mapped::ffff:a3f:c900

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.63.201.0/3110.63.201.0 – 10.63.201.110.63.201.1
210.63.201.2/3110.63.201.2 – 10.63.201.310.63.201.3
310.63.201.4/3110.63.201.4 – 10.63.201.510.63.201.5
410.63.201.6/3110.63.201.6 – 10.63.201.710.63.201.7
510.63.201.8/3110.63.201.8 – 10.63.201.910.63.201.9
610.63.201.10/3110.63.201.10 – 10.63.201.1110.63.201.11
710.63.201.12/3110.63.201.12 – 10.63.201.1310.63.201.13
810.63.201.14/3110.63.201.14 – 10.63.201.1510.63.201.15
910.63.201.16/3110.63.201.16 – 10.63.201.1710.63.201.17
1010.63.201.18/3110.63.201.18 – 10.63.201.1910.63.201.19
1110.63.201.20/3110.63.201.20 – 10.63.201.2110.63.201.21
1210.63.201.22/3110.63.201.22 – 10.63.201.2310.63.201.23
1310.63.201.24/3110.63.201.24 – 10.63.201.2510.63.201.25
1410.63.201.26/3110.63.201.26 – 10.63.201.2710.63.201.27
1510.63.201.28/3110.63.201.28 – 10.63.201.2910.63.201.29
1610.63.201.30/3110.63.201.30 – 10.63.201.3110.63.201.31
1710.63.201.32/3110.63.201.32 – 10.63.201.3310.63.201.33
1810.63.201.34/3110.63.201.34 – 10.63.201.3510.63.201.35
1910.63.201.36/3110.63.201.36 – 10.63.201.3710.63.201.37
2010.63.201.38/3110.63.201.38 – 10.63.201.3910.63.201.39
2110.63.201.40/3110.63.201.40 – 10.63.201.4110.63.201.41
2210.63.201.42/3110.63.201.42 – 10.63.201.4310.63.201.43
2310.63.201.44/3110.63.201.44 – 10.63.201.4510.63.201.45
2410.63.201.46/3110.63.201.46 – 10.63.201.4710.63.201.47
2510.63.201.48/3110.63.201.48 – 10.63.201.4910.63.201.49
2610.63.201.50/3110.63.201.50 – 10.63.201.5110.63.201.51
2710.63.201.52/3110.63.201.52 – 10.63.201.5310.63.201.53
2810.63.201.54/3110.63.201.54 – 10.63.201.5510.63.201.55
2910.63.201.56/3110.63.201.56 – 10.63.201.5710.63.201.57
3010.63.201.58/3110.63.201.58 – 10.63.201.5910.63.201.59
3110.63.201.60/3110.63.201.60 – 10.63.201.6110.63.201.61
3210.63.201.62/3110.63.201.62 – 10.63.201.6310.63.201.63
3310.63.201.64/3110.63.201.64 – 10.63.201.6510.63.201.65
3410.63.201.66/3110.63.201.66 – 10.63.201.6710.63.201.67
3510.63.201.68/3110.63.201.68 – 10.63.201.6910.63.201.69
3610.63.201.70/3110.63.201.70 – 10.63.201.7110.63.201.71
3710.63.201.72/3110.63.201.72 – 10.63.201.7310.63.201.73
3810.63.201.74/3110.63.201.74 – 10.63.201.7510.63.201.75
3910.63.201.76/3110.63.201.76 – 10.63.201.7710.63.201.77
4010.63.201.78/3110.63.201.78 – 10.63.201.7910.63.201.79
4110.63.201.80/3110.63.201.80 – 10.63.201.8110.63.201.81
4210.63.201.82/3110.63.201.82 – 10.63.201.8310.63.201.83
4310.63.201.84/3110.63.201.84 – 10.63.201.8510.63.201.85
4410.63.201.86/3110.63.201.86 – 10.63.201.8710.63.201.87
4510.63.201.88/3110.63.201.88 – 10.63.201.8910.63.201.89
4610.63.201.90/3110.63.201.90 – 10.63.201.9110.63.201.91
4710.63.201.92/3110.63.201.92 – 10.63.201.9310.63.201.93
4810.63.201.94/3110.63.201.94 – 10.63.201.9510.63.201.95
4910.63.201.96/3110.63.201.96 – 10.63.201.9710.63.201.97
5010.63.201.98/3110.63.201.98 – 10.63.201.9910.63.201.99
5110.63.201.100/3110.63.201.100 – 10.63.201.10110.63.201.101
5210.63.201.102/3110.63.201.102 – 10.63.201.10310.63.201.103
5310.63.201.104/3110.63.201.104 – 10.63.201.10510.63.201.105
5410.63.201.106/3110.63.201.106 – 10.63.201.10710.63.201.107
5510.63.201.108/3110.63.201.108 – 10.63.201.10910.63.201.109
5610.63.201.110/3110.63.201.110 – 10.63.201.11110.63.201.111
5710.63.201.112/3110.63.201.112 – 10.63.201.11310.63.201.113
5810.63.201.114/3110.63.201.114 – 10.63.201.11510.63.201.115
5910.63.201.116/3110.63.201.116 – 10.63.201.11710.63.201.117
6010.63.201.118/3110.63.201.118 – 10.63.201.11910.63.201.119
6110.63.201.120/3110.63.201.120 – 10.63.201.12110.63.201.121
6210.63.201.122/3110.63.201.122 – 10.63.201.12310.63.201.123
6310.63.201.124/3110.63.201.124 – 10.63.201.12510.63.201.125
6410.63.201.126/3110.63.201.126 – 10.63.201.12710.63.201.127
6510.63.201.128/3110.63.201.128 – 10.63.201.12910.63.201.129
6610.63.201.130/3110.63.201.130 – 10.63.201.13110.63.201.131
6710.63.201.132/3110.63.201.132 – 10.63.201.13310.63.201.133
6810.63.201.134/3110.63.201.134 – 10.63.201.13510.63.201.135
6910.63.201.136/3110.63.201.136 – 10.63.201.13710.63.201.137
7010.63.201.138/3110.63.201.138 – 10.63.201.13910.63.201.139
7110.63.201.140/3110.63.201.140 – 10.63.201.14110.63.201.141
7210.63.201.142/3110.63.201.142 – 10.63.201.14310.63.201.143
7310.63.201.144/3110.63.201.144 – 10.63.201.14510.63.201.145
7410.63.201.146/3110.63.201.146 – 10.63.201.14710.63.201.147
7510.63.201.148/3110.63.201.148 – 10.63.201.14910.63.201.149
7610.63.201.150/3110.63.201.150 – 10.63.201.15110.63.201.151
7710.63.201.152/3110.63.201.152 – 10.63.201.15310.63.201.153
7810.63.201.154/3110.63.201.154 – 10.63.201.15510.63.201.155
7910.63.201.156/3110.63.201.156 – 10.63.201.15710.63.201.157
8010.63.201.158/3110.63.201.158 – 10.63.201.15910.63.201.159
8110.63.201.160/3110.63.201.160 – 10.63.201.16110.63.201.161
8210.63.201.162/3110.63.201.162 – 10.63.201.16310.63.201.163
8310.63.201.164/3110.63.201.164 – 10.63.201.16510.63.201.165
8410.63.201.166/3110.63.201.166 – 10.63.201.16710.63.201.167
8510.63.201.168/3110.63.201.168 – 10.63.201.16910.63.201.169
8610.63.201.170/3110.63.201.170 – 10.63.201.17110.63.201.171
8710.63.201.172/3110.63.201.172 – 10.63.201.17310.63.201.173
8810.63.201.174/3110.63.201.174 – 10.63.201.17510.63.201.175
8910.63.201.176/3110.63.201.176 – 10.63.201.17710.63.201.177
9010.63.201.178/3110.63.201.178 – 10.63.201.17910.63.201.179
9110.63.201.180/3110.63.201.180 – 10.63.201.18110.63.201.181
9210.63.201.182/3110.63.201.182 – 10.63.201.18310.63.201.183
9310.63.201.184/3110.63.201.184 – 10.63.201.18510.63.201.185
9410.63.201.186/3110.63.201.186 – 10.63.201.18710.63.201.187
9510.63.201.188/3110.63.201.188 – 10.63.201.18910.63.201.189
9610.63.201.190/3110.63.201.190 – 10.63.201.19110.63.201.191
9710.63.201.192/3110.63.201.192 – 10.63.201.19310.63.201.193
9810.63.201.194/3110.63.201.194 – 10.63.201.19510.63.201.195
9910.63.201.196/3110.63.201.196 – 10.63.201.19710.63.201.197
10010.63.201.198/3110.63.201.198 – 10.63.201.19910.63.201.199
10110.63.201.200/3110.63.201.200 – 10.63.201.20110.63.201.201
10210.63.201.202/3110.63.201.202 – 10.63.201.20310.63.201.203
10310.63.201.204/3110.63.201.204 – 10.63.201.20510.63.201.205
10410.63.201.206/3110.63.201.206 – 10.63.201.20710.63.201.207
10510.63.201.208/3110.63.201.208 – 10.63.201.20910.63.201.209
10610.63.201.210/3110.63.201.210 – 10.63.201.21110.63.201.211
10710.63.201.212/3110.63.201.212 – 10.63.201.21310.63.201.213
10810.63.201.214/3110.63.201.214 – 10.63.201.21510.63.201.215
10910.63.201.216/3110.63.201.216 – 10.63.201.21710.63.201.217
11010.63.201.218/3110.63.201.218 – 10.63.201.21910.63.201.219
11110.63.201.220/3110.63.201.220 – 10.63.201.22110.63.201.221
11210.63.201.222/3110.63.201.222 – 10.63.201.22310.63.201.223
11310.63.201.224/3110.63.201.224 – 10.63.201.22510.63.201.225
11410.63.201.226/3110.63.201.226 – 10.63.201.22710.63.201.227
11510.63.201.228/3110.63.201.228 – 10.63.201.22910.63.201.229
11610.63.201.230/3110.63.201.230 – 10.63.201.23110.63.201.231
11710.63.201.232/3110.63.201.232 – 10.63.201.23310.63.201.233
11810.63.201.234/3110.63.201.234 – 10.63.201.23510.63.201.235
11910.63.201.236/3110.63.201.236 – 10.63.201.23710.63.201.237
12010.63.201.238/3110.63.201.238 – 10.63.201.23910.63.201.239
12110.63.201.240/3110.63.201.240 – 10.63.201.24110.63.201.241
12210.63.201.242/3110.63.201.242 – 10.63.201.24310.63.201.243
12310.63.201.244/3110.63.201.244 – 10.63.201.24510.63.201.245
12410.63.201.246/3110.63.201.246 – 10.63.201.24710.63.201.247
12510.63.201.248/3110.63.201.248 – 10.63.201.24910.63.201.249
12610.63.201.250/3110.63.201.250 – 10.63.201.25110.63.201.251
12710.63.201.252/3110.63.201.252 – 10.63.201.25310.63.201.253
12810.63.201.254/3110.63.201.254 – 10.63.201.25510.63.201.255
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 →