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)10.201.63.0/24
network10.201.63.0/24
broadcast10.201.63.255
first host10.201.63.1
last host10.201.63.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.201.63.0/24
address00001010.11001001.00111111.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.11001001.00111111.00000000
broadcast00001010.11001001.00111111.11111111
green = network part, grey = host part
hex0x0ac93f00
decimal180961024
reverse dns0.63.201.10.in-addr.arpa
ipv4-mapped::ffff:ac9:3f00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.201.63.0/3110.201.63.0 – 10.201.63.110.201.63.1
210.201.63.2/3110.201.63.2 – 10.201.63.310.201.63.3
310.201.63.4/3110.201.63.4 – 10.201.63.510.201.63.5
410.201.63.6/3110.201.63.6 – 10.201.63.710.201.63.7
510.201.63.8/3110.201.63.8 – 10.201.63.910.201.63.9
610.201.63.10/3110.201.63.10 – 10.201.63.1110.201.63.11
710.201.63.12/3110.201.63.12 – 10.201.63.1310.201.63.13
810.201.63.14/3110.201.63.14 – 10.201.63.1510.201.63.15
910.201.63.16/3110.201.63.16 – 10.201.63.1710.201.63.17
1010.201.63.18/3110.201.63.18 – 10.201.63.1910.201.63.19
1110.201.63.20/3110.201.63.20 – 10.201.63.2110.201.63.21
1210.201.63.22/3110.201.63.22 – 10.201.63.2310.201.63.23
1310.201.63.24/3110.201.63.24 – 10.201.63.2510.201.63.25
1410.201.63.26/3110.201.63.26 – 10.201.63.2710.201.63.27
1510.201.63.28/3110.201.63.28 – 10.201.63.2910.201.63.29
1610.201.63.30/3110.201.63.30 – 10.201.63.3110.201.63.31
1710.201.63.32/3110.201.63.32 – 10.201.63.3310.201.63.33
1810.201.63.34/3110.201.63.34 – 10.201.63.3510.201.63.35
1910.201.63.36/3110.201.63.36 – 10.201.63.3710.201.63.37
2010.201.63.38/3110.201.63.38 – 10.201.63.3910.201.63.39
2110.201.63.40/3110.201.63.40 – 10.201.63.4110.201.63.41
2210.201.63.42/3110.201.63.42 – 10.201.63.4310.201.63.43
2310.201.63.44/3110.201.63.44 – 10.201.63.4510.201.63.45
2410.201.63.46/3110.201.63.46 – 10.201.63.4710.201.63.47
2510.201.63.48/3110.201.63.48 – 10.201.63.4910.201.63.49
2610.201.63.50/3110.201.63.50 – 10.201.63.5110.201.63.51
2710.201.63.52/3110.201.63.52 – 10.201.63.5310.201.63.53
2810.201.63.54/3110.201.63.54 – 10.201.63.5510.201.63.55
2910.201.63.56/3110.201.63.56 – 10.201.63.5710.201.63.57
3010.201.63.58/3110.201.63.58 – 10.201.63.5910.201.63.59
3110.201.63.60/3110.201.63.60 – 10.201.63.6110.201.63.61
3210.201.63.62/3110.201.63.62 – 10.201.63.6310.201.63.63
3310.201.63.64/3110.201.63.64 – 10.201.63.6510.201.63.65
3410.201.63.66/3110.201.63.66 – 10.201.63.6710.201.63.67
3510.201.63.68/3110.201.63.68 – 10.201.63.6910.201.63.69
3610.201.63.70/3110.201.63.70 – 10.201.63.7110.201.63.71
3710.201.63.72/3110.201.63.72 – 10.201.63.7310.201.63.73
3810.201.63.74/3110.201.63.74 – 10.201.63.7510.201.63.75
3910.201.63.76/3110.201.63.76 – 10.201.63.7710.201.63.77
4010.201.63.78/3110.201.63.78 – 10.201.63.7910.201.63.79
4110.201.63.80/3110.201.63.80 – 10.201.63.8110.201.63.81
4210.201.63.82/3110.201.63.82 – 10.201.63.8310.201.63.83
4310.201.63.84/3110.201.63.84 – 10.201.63.8510.201.63.85
4410.201.63.86/3110.201.63.86 – 10.201.63.8710.201.63.87
4510.201.63.88/3110.201.63.88 – 10.201.63.8910.201.63.89
4610.201.63.90/3110.201.63.90 – 10.201.63.9110.201.63.91
4710.201.63.92/3110.201.63.92 – 10.201.63.9310.201.63.93
4810.201.63.94/3110.201.63.94 – 10.201.63.9510.201.63.95
4910.201.63.96/3110.201.63.96 – 10.201.63.9710.201.63.97
5010.201.63.98/3110.201.63.98 – 10.201.63.9910.201.63.99
5110.201.63.100/3110.201.63.100 – 10.201.63.10110.201.63.101
5210.201.63.102/3110.201.63.102 – 10.201.63.10310.201.63.103
5310.201.63.104/3110.201.63.104 – 10.201.63.10510.201.63.105
5410.201.63.106/3110.201.63.106 – 10.201.63.10710.201.63.107
5510.201.63.108/3110.201.63.108 – 10.201.63.10910.201.63.109
5610.201.63.110/3110.201.63.110 – 10.201.63.11110.201.63.111
5710.201.63.112/3110.201.63.112 – 10.201.63.11310.201.63.113
5810.201.63.114/3110.201.63.114 – 10.201.63.11510.201.63.115
5910.201.63.116/3110.201.63.116 – 10.201.63.11710.201.63.117
6010.201.63.118/3110.201.63.118 – 10.201.63.11910.201.63.119
6110.201.63.120/3110.201.63.120 – 10.201.63.12110.201.63.121
6210.201.63.122/3110.201.63.122 – 10.201.63.12310.201.63.123
6310.201.63.124/3110.201.63.124 – 10.201.63.12510.201.63.125
6410.201.63.126/3110.201.63.126 – 10.201.63.12710.201.63.127
6510.201.63.128/3110.201.63.128 – 10.201.63.12910.201.63.129
6610.201.63.130/3110.201.63.130 – 10.201.63.13110.201.63.131
6710.201.63.132/3110.201.63.132 – 10.201.63.13310.201.63.133
6810.201.63.134/3110.201.63.134 – 10.201.63.13510.201.63.135
6910.201.63.136/3110.201.63.136 – 10.201.63.13710.201.63.137
7010.201.63.138/3110.201.63.138 – 10.201.63.13910.201.63.139
7110.201.63.140/3110.201.63.140 – 10.201.63.14110.201.63.141
7210.201.63.142/3110.201.63.142 – 10.201.63.14310.201.63.143
7310.201.63.144/3110.201.63.144 – 10.201.63.14510.201.63.145
7410.201.63.146/3110.201.63.146 – 10.201.63.14710.201.63.147
7510.201.63.148/3110.201.63.148 – 10.201.63.14910.201.63.149
7610.201.63.150/3110.201.63.150 – 10.201.63.15110.201.63.151
7710.201.63.152/3110.201.63.152 – 10.201.63.15310.201.63.153
7810.201.63.154/3110.201.63.154 – 10.201.63.15510.201.63.155
7910.201.63.156/3110.201.63.156 – 10.201.63.15710.201.63.157
8010.201.63.158/3110.201.63.158 – 10.201.63.15910.201.63.159
8110.201.63.160/3110.201.63.160 – 10.201.63.16110.201.63.161
8210.201.63.162/3110.201.63.162 – 10.201.63.16310.201.63.163
8310.201.63.164/3110.201.63.164 – 10.201.63.16510.201.63.165
8410.201.63.166/3110.201.63.166 – 10.201.63.16710.201.63.167
8510.201.63.168/3110.201.63.168 – 10.201.63.16910.201.63.169
8610.201.63.170/3110.201.63.170 – 10.201.63.17110.201.63.171
8710.201.63.172/3110.201.63.172 – 10.201.63.17310.201.63.173
8810.201.63.174/3110.201.63.174 – 10.201.63.17510.201.63.175
8910.201.63.176/3110.201.63.176 – 10.201.63.17710.201.63.177
9010.201.63.178/3110.201.63.178 – 10.201.63.17910.201.63.179
9110.201.63.180/3110.201.63.180 – 10.201.63.18110.201.63.181
9210.201.63.182/3110.201.63.182 – 10.201.63.18310.201.63.183
9310.201.63.184/3110.201.63.184 – 10.201.63.18510.201.63.185
9410.201.63.186/3110.201.63.186 – 10.201.63.18710.201.63.187
9510.201.63.188/3110.201.63.188 – 10.201.63.18910.201.63.189
9610.201.63.190/3110.201.63.190 – 10.201.63.19110.201.63.191
9710.201.63.192/3110.201.63.192 – 10.201.63.19310.201.63.193
9810.201.63.194/3110.201.63.194 – 10.201.63.19510.201.63.195
9910.201.63.196/3110.201.63.196 – 10.201.63.19710.201.63.197
10010.201.63.198/3110.201.63.198 – 10.201.63.19910.201.63.199
10110.201.63.200/3110.201.63.200 – 10.201.63.20110.201.63.201
10210.201.63.202/3110.201.63.202 – 10.201.63.20310.201.63.203
10310.201.63.204/3110.201.63.204 – 10.201.63.20510.201.63.205
10410.201.63.206/3110.201.63.206 – 10.201.63.20710.201.63.207
10510.201.63.208/3110.201.63.208 – 10.201.63.20910.201.63.209
10610.201.63.210/3110.201.63.210 – 10.201.63.21110.201.63.211
10710.201.63.212/3110.201.63.212 – 10.201.63.21310.201.63.213
10810.201.63.214/3110.201.63.214 – 10.201.63.21510.201.63.215
10910.201.63.216/3110.201.63.216 – 10.201.63.21710.201.63.217
11010.201.63.218/3110.201.63.218 – 10.201.63.21910.201.63.219
11110.201.63.220/3110.201.63.220 – 10.201.63.22110.201.63.221
11210.201.63.222/3110.201.63.222 – 10.201.63.22310.201.63.223
11310.201.63.224/3110.201.63.224 – 10.201.63.22510.201.63.225
11410.201.63.226/3110.201.63.226 – 10.201.63.22710.201.63.227
11510.201.63.228/3110.201.63.228 – 10.201.63.22910.201.63.229
11610.201.63.230/3110.201.63.230 – 10.201.63.23110.201.63.231
11710.201.63.232/3110.201.63.232 – 10.201.63.23310.201.63.233
11810.201.63.234/3110.201.63.234 – 10.201.63.23510.201.63.235
11910.201.63.236/3110.201.63.236 – 10.201.63.23710.201.63.237
12010.201.63.238/3110.201.63.238 – 10.201.63.23910.201.63.239
12110.201.63.240/3110.201.63.240 – 10.201.63.24110.201.63.241
12210.201.63.242/3110.201.63.242 – 10.201.63.24310.201.63.243
12310.201.63.244/3110.201.63.244 – 10.201.63.24510.201.63.245
12410.201.63.246/3110.201.63.246 – 10.201.63.24710.201.63.247
12510.201.63.248/3110.201.63.248 – 10.201.63.24910.201.63.249
12610.201.63.250/3110.201.63.250 – 10.201.63.25110.201.63.251
12710.201.63.252/3110.201.63.252 – 10.201.63.25310.201.63.253
12810.201.63.254/3110.201.63.254 – 10.201.63.25510.201.63.255
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 →