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)10.2.50.0/24
network10.2.50.0/24
broadcast10.2.50.255
first host10.2.50.1
last host10.2.50.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.2.50.0/24
address00001010.00000010.00110010.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000010.00110010.00000000
broadcast00001010.00000010.00110010.11111111
green = network part, grey = host part
hex0x0a023200
decimal167916032
reverse dns0.50.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:3200

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.50.0/3110.2.50.0 – 10.2.50.110.2.50.1
210.2.50.2/3110.2.50.2 – 10.2.50.310.2.50.3
310.2.50.4/3110.2.50.4 – 10.2.50.510.2.50.5
410.2.50.6/3110.2.50.6 – 10.2.50.710.2.50.7
510.2.50.8/3110.2.50.8 – 10.2.50.910.2.50.9
610.2.50.10/3110.2.50.10 – 10.2.50.1110.2.50.11
710.2.50.12/3110.2.50.12 – 10.2.50.1310.2.50.13
810.2.50.14/3110.2.50.14 – 10.2.50.1510.2.50.15
910.2.50.16/3110.2.50.16 – 10.2.50.1710.2.50.17
1010.2.50.18/3110.2.50.18 – 10.2.50.1910.2.50.19
1110.2.50.20/3110.2.50.20 – 10.2.50.2110.2.50.21
1210.2.50.22/3110.2.50.22 – 10.2.50.2310.2.50.23
1310.2.50.24/3110.2.50.24 – 10.2.50.2510.2.50.25
1410.2.50.26/3110.2.50.26 – 10.2.50.2710.2.50.27
1510.2.50.28/3110.2.50.28 – 10.2.50.2910.2.50.29
1610.2.50.30/3110.2.50.30 – 10.2.50.3110.2.50.31
1710.2.50.32/3110.2.50.32 – 10.2.50.3310.2.50.33
1810.2.50.34/3110.2.50.34 – 10.2.50.3510.2.50.35
1910.2.50.36/3110.2.50.36 – 10.2.50.3710.2.50.37
2010.2.50.38/3110.2.50.38 – 10.2.50.3910.2.50.39
2110.2.50.40/3110.2.50.40 – 10.2.50.4110.2.50.41
2210.2.50.42/3110.2.50.42 – 10.2.50.4310.2.50.43
2310.2.50.44/3110.2.50.44 – 10.2.50.4510.2.50.45
2410.2.50.46/3110.2.50.46 – 10.2.50.4710.2.50.47
2510.2.50.48/3110.2.50.48 – 10.2.50.4910.2.50.49
2610.2.50.50/3110.2.50.50 – 10.2.50.5110.2.50.51
2710.2.50.52/3110.2.50.52 – 10.2.50.5310.2.50.53
2810.2.50.54/3110.2.50.54 – 10.2.50.5510.2.50.55
2910.2.50.56/3110.2.50.56 – 10.2.50.5710.2.50.57
3010.2.50.58/3110.2.50.58 – 10.2.50.5910.2.50.59
3110.2.50.60/3110.2.50.60 – 10.2.50.6110.2.50.61
3210.2.50.62/3110.2.50.62 – 10.2.50.6310.2.50.63
3310.2.50.64/3110.2.50.64 – 10.2.50.6510.2.50.65
3410.2.50.66/3110.2.50.66 – 10.2.50.6710.2.50.67
3510.2.50.68/3110.2.50.68 – 10.2.50.6910.2.50.69
3610.2.50.70/3110.2.50.70 – 10.2.50.7110.2.50.71
3710.2.50.72/3110.2.50.72 – 10.2.50.7310.2.50.73
3810.2.50.74/3110.2.50.74 – 10.2.50.7510.2.50.75
3910.2.50.76/3110.2.50.76 – 10.2.50.7710.2.50.77
4010.2.50.78/3110.2.50.78 – 10.2.50.7910.2.50.79
4110.2.50.80/3110.2.50.80 – 10.2.50.8110.2.50.81
4210.2.50.82/3110.2.50.82 – 10.2.50.8310.2.50.83
4310.2.50.84/3110.2.50.84 – 10.2.50.8510.2.50.85
4410.2.50.86/3110.2.50.86 – 10.2.50.8710.2.50.87
4510.2.50.88/3110.2.50.88 – 10.2.50.8910.2.50.89
4610.2.50.90/3110.2.50.90 – 10.2.50.9110.2.50.91
4710.2.50.92/3110.2.50.92 – 10.2.50.9310.2.50.93
4810.2.50.94/3110.2.50.94 – 10.2.50.9510.2.50.95
4910.2.50.96/3110.2.50.96 – 10.2.50.9710.2.50.97
5010.2.50.98/3110.2.50.98 – 10.2.50.9910.2.50.99
5110.2.50.100/3110.2.50.100 – 10.2.50.10110.2.50.101
5210.2.50.102/3110.2.50.102 – 10.2.50.10310.2.50.103
5310.2.50.104/3110.2.50.104 – 10.2.50.10510.2.50.105
5410.2.50.106/3110.2.50.106 – 10.2.50.10710.2.50.107
5510.2.50.108/3110.2.50.108 – 10.2.50.10910.2.50.109
5610.2.50.110/3110.2.50.110 – 10.2.50.11110.2.50.111
5710.2.50.112/3110.2.50.112 – 10.2.50.11310.2.50.113
5810.2.50.114/3110.2.50.114 – 10.2.50.11510.2.50.115
5910.2.50.116/3110.2.50.116 – 10.2.50.11710.2.50.117
6010.2.50.118/3110.2.50.118 – 10.2.50.11910.2.50.119
6110.2.50.120/3110.2.50.120 – 10.2.50.12110.2.50.121
6210.2.50.122/3110.2.50.122 – 10.2.50.12310.2.50.123
6310.2.50.124/3110.2.50.124 – 10.2.50.12510.2.50.125
6410.2.50.126/3110.2.50.126 – 10.2.50.12710.2.50.127
6510.2.50.128/3110.2.50.128 – 10.2.50.12910.2.50.129
6610.2.50.130/3110.2.50.130 – 10.2.50.13110.2.50.131
6710.2.50.132/3110.2.50.132 – 10.2.50.13310.2.50.133
6810.2.50.134/3110.2.50.134 – 10.2.50.13510.2.50.135
6910.2.50.136/3110.2.50.136 – 10.2.50.13710.2.50.137
7010.2.50.138/3110.2.50.138 – 10.2.50.13910.2.50.139
7110.2.50.140/3110.2.50.140 – 10.2.50.14110.2.50.141
7210.2.50.142/3110.2.50.142 – 10.2.50.14310.2.50.143
7310.2.50.144/3110.2.50.144 – 10.2.50.14510.2.50.145
7410.2.50.146/3110.2.50.146 – 10.2.50.14710.2.50.147
7510.2.50.148/3110.2.50.148 – 10.2.50.14910.2.50.149
7610.2.50.150/3110.2.50.150 – 10.2.50.15110.2.50.151
7710.2.50.152/3110.2.50.152 – 10.2.50.15310.2.50.153
7810.2.50.154/3110.2.50.154 – 10.2.50.15510.2.50.155
7910.2.50.156/3110.2.50.156 – 10.2.50.15710.2.50.157
8010.2.50.158/3110.2.50.158 – 10.2.50.15910.2.50.159
8110.2.50.160/3110.2.50.160 – 10.2.50.16110.2.50.161
8210.2.50.162/3110.2.50.162 – 10.2.50.16310.2.50.163
8310.2.50.164/3110.2.50.164 – 10.2.50.16510.2.50.165
8410.2.50.166/3110.2.50.166 – 10.2.50.16710.2.50.167
8510.2.50.168/3110.2.50.168 – 10.2.50.16910.2.50.169
8610.2.50.170/3110.2.50.170 – 10.2.50.17110.2.50.171
8710.2.50.172/3110.2.50.172 – 10.2.50.17310.2.50.173
8810.2.50.174/3110.2.50.174 – 10.2.50.17510.2.50.175
8910.2.50.176/3110.2.50.176 – 10.2.50.17710.2.50.177
9010.2.50.178/3110.2.50.178 – 10.2.50.17910.2.50.179
9110.2.50.180/3110.2.50.180 – 10.2.50.18110.2.50.181
9210.2.50.182/3110.2.50.182 – 10.2.50.18310.2.50.183
9310.2.50.184/3110.2.50.184 – 10.2.50.18510.2.50.185
9410.2.50.186/3110.2.50.186 – 10.2.50.18710.2.50.187
9510.2.50.188/3110.2.50.188 – 10.2.50.18910.2.50.189
9610.2.50.190/3110.2.50.190 – 10.2.50.19110.2.50.191
9710.2.50.192/3110.2.50.192 – 10.2.50.19310.2.50.193
9810.2.50.194/3110.2.50.194 – 10.2.50.19510.2.50.195
9910.2.50.196/3110.2.50.196 – 10.2.50.19710.2.50.197
10010.2.50.198/3110.2.50.198 – 10.2.50.19910.2.50.199
10110.2.50.200/3110.2.50.200 – 10.2.50.20110.2.50.201
10210.2.50.202/3110.2.50.202 – 10.2.50.20310.2.50.203
10310.2.50.204/3110.2.50.204 – 10.2.50.20510.2.50.205
10410.2.50.206/3110.2.50.206 – 10.2.50.20710.2.50.207
10510.2.50.208/3110.2.50.208 – 10.2.50.20910.2.50.209
10610.2.50.210/3110.2.50.210 – 10.2.50.21110.2.50.211
10710.2.50.212/3110.2.50.212 – 10.2.50.21310.2.50.213
10810.2.50.214/3110.2.50.214 – 10.2.50.21510.2.50.215
10910.2.50.216/3110.2.50.216 – 10.2.50.21710.2.50.217
11010.2.50.218/3110.2.50.218 – 10.2.50.21910.2.50.219
11110.2.50.220/3110.2.50.220 – 10.2.50.22110.2.50.221
11210.2.50.222/3110.2.50.222 – 10.2.50.22310.2.50.223
11310.2.50.224/3110.2.50.224 – 10.2.50.22510.2.50.225
11410.2.50.226/3110.2.50.226 – 10.2.50.22710.2.50.227
11510.2.50.228/3110.2.50.228 – 10.2.50.22910.2.50.229
11610.2.50.230/3110.2.50.230 – 10.2.50.23110.2.50.231
11710.2.50.232/3110.2.50.232 – 10.2.50.23310.2.50.233
11810.2.50.234/3110.2.50.234 – 10.2.50.23510.2.50.235
11910.2.50.236/3110.2.50.236 – 10.2.50.23710.2.50.237
12010.2.50.238/3110.2.50.238 – 10.2.50.23910.2.50.239
12110.2.50.240/3110.2.50.240 – 10.2.50.24110.2.50.241
12210.2.50.242/3110.2.50.242 – 10.2.50.24310.2.50.243
12310.2.50.244/3110.2.50.244 – 10.2.50.24510.2.50.245
12410.2.50.246/3110.2.50.246 – 10.2.50.24710.2.50.247
12510.2.50.248/3110.2.50.248 – 10.2.50.24910.2.50.249
12610.2.50.250/3110.2.50.250 – 10.2.50.25110.2.50.251
12710.2.50.252/3110.2.50.252 – 10.2.50.25310.2.50.253
12810.2.50.254/3110.2.50.254 – 10.2.50.25510.2.50.255
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 →