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)10.2.38.0/24
network10.2.38.0/24
broadcast10.2.38.255
first host10.2.38.1
last host10.2.38.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.2.38.0/24
address00001010.00000010.00100110.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000010.00100110.00000000
broadcast00001010.00000010.00100110.11111111
green = network part, grey = host part
hex0x0a022600
decimal167912960
reverse dns0.38.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:2600

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.38.0/3110.2.38.0 – 10.2.38.110.2.38.1
210.2.38.2/3110.2.38.2 – 10.2.38.310.2.38.3
310.2.38.4/3110.2.38.4 – 10.2.38.510.2.38.5
410.2.38.6/3110.2.38.6 – 10.2.38.710.2.38.7
510.2.38.8/3110.2.38.8 – 10.2.38.910.2.38.9
610.2.38.10/3110.2.38.10 – 10.2.38.1110.2.38.11
710.2.38.12/3110.2.38.12 – 10.2.38.1310.2.38.13
810.2.38.14/3110.2.38.14 – 10.2.38.1510.2.38.15
910.2.38.16/3110.2.38.16 – 10.2.38.1710.2.38.17
1010.2.38.18/3110.2.38.18 – 10.2.38.1910.2.38.19
1110.2.38.20/3110.2.38.20 – 10.2.38.2110.2.38.21
1210.2.38.22/3110.2.38.22 – 10.2.38.2310.2.38.23
1310.2.38.24/3110.2.38.24 – 10.2.38.2510.2.38.25
1410.2.38.26/3110.2.38.26 – 10.2.38.2710.2.38.27
1510.2.38.28/3110.2.38.28 – 10.2.38.2910.2.38.29
1610.2.38.30/3110.2.38.30 – 10.2.38.3110.2.38.31
1710.2.38.32/3110.2.38.32 – 10.2.38.3310.2.38.33
1810.2.38.34/3110.2.38.34 – 10.2.38.3510.2.38.35
1910.2.38.36/3110.2.38.36 – 10.2.38.3710.2.38.37
2010.2.38.38/3110.2.38.38 – 10.2.38.3910.2.38.39
2110.2.38.40/3110.2.38.40 – 10.2.38.4110.2.38.41
2210.2.38.42/3110.2.38.42 – 10.2.38.4310.2.38.43
2310.2.38.44/3110.2.38.44 – 10.2.38.4510.2.38.45
2410.2.38.46/3110.2.38.46 – 10.2.38.4710.2.38.47
2510.2.38.48/3110.2.38.48 – 10.2.38.4910.2.38.49
2610.2.38.50/3110.2.38.50 – 10.2.38.5110.2.38.51
2710.2.38.52/3110.2.38.52 – 10.2.38.5310.2.38.53
2810.2.38.54/3110.2.38.54 – 10.2.38.5510.2.38.55
2910.2.38.56/3110.2.38.56 – 10.2.38.5710.2.38.57
3010.2.38.58/3110.2.38.58 – 10.2.38.5910.2.38.59
3110.2.38.60/3110.2.38.60 – 10.2.38.6110.2.38.61
3210.2.38.62/3110.2.38.62 – 10.2.38.6310.2.38.63
3310.2.38.64/3110.2.38.64 – 10.2.38.6510.2.38.65
3410.2.38.66/3110.2.38.66 – 10.2.38.6710.2.38.67
3510.2.38.68/3110.2.38.68 – 10.2.38.6910.2.38.69
3610.2.38.70/3110.2.38.70 – 10.2.38.7110.2.38.71
3710.2.38.72/3110.2.38.72 – 10.2.38.7310.2.38.73
3810.2.38.74/3110.2.38.74 – 10.2.38.7510.2.38.75
3910.2.38.76/3110.2.38.76 – 10.2.38.7710.2.38.77
4010.2.38.78/3110.2.38.78 – 10.2.38.7910.2.38.79
4110.2.38.80/3110.2.38.80 – 10.2.38.8110.2.38.81
4210.2.38.82/3110.2.38.82 – 10.2.38.8310.2.38.83
4310.2.38.84/3110.2.38.84 – 10.2.38.8510.2.38.85
4410.2.38.86/3110.2.38.86 – 10.2.38.8710.2.38.87
4510.2.38.88/3110.2.38.88 – 10.2.38.8910.2.38.89
4610.2.38.90/3110.2.38.90 – 10.2.38.9110.2.38.91
4710.2.38.92/3110.2.38.92 – 10.2.38.9310.2.38.93
4810.2.38.94/3110.2.38.94 – 10.2.38.9510.2.38.95
4910.2.38.96/3110.2.38.96 – 10.2.38.9710.2.38.97
5010.2.38.98/3110.2.38.98 – 10.2.38.9910.2.38.99
5110.2.38.100/3110.2.38.100 – 10.2.38.10110.2.38.101
5210.2.38.102/3110.2.38.102 – 10.2.38.10310.2.38.103
5310.2.38.104/3110.2.38.104 – 10.2.38.10510.2.38.105
5410.2.38.106/3110.2.38.106 – 10.2.38.10710.2.38.107
5510.2.38.108/3110.2.38.108 – 10.2.38.10910.2.38.109
5610.2.38.110/3110.2.38.110 – 10.2.38.11110.2.38.111
5710.2.38.112/3110.2.38.112 – 10.2.38.11310.2.38.113
5810.2.38.114/3110.2.38.114 – 10.2.38.11510.2.38.115
5910.2.38.116/3110.2.38.116 – 10.2.38.11710.2.38.117
6010.2.38.118/3110.2.38.118 – 10.2.38.11910.2.38.119
6110.2.38.120/3110.2.38.120 – 10.2.38.12110.2.38.121
6210.2.38.122/3110.2.38.122 – 10.2.38.12310.2.38.123
6310.2.38.124/3110.2.38.124 – 10.2.38.12510.2.38.125
6410.2.38.126/3110.2.38.126 – 10.2.38.12710.2.38.127
6510.2.38.128/3110.2.38.128 – 10.2.38.12910.2.38.129
6610.2.38.130/3110.2.38.130 – 10.2.38.13110.2.38.131
6710.2.38.132/3110.2.38.132 – 10.2.38.13310.2.38.133
6810.2.38.134/3110.2.38.134 – 10.2.38.13510.2.38.135
6910.2.38.136/3110.2.38.136 – 10.2.38.13710.2.38.137
7010.2.38.138/3110.2.38.138 – 10.2.38.13910.2.38.139
7110.2.38.140/3110.2.38.140 – 10.2.38.14110.2.38.141
7210.2.38.142/3110.2.38.142 – 10.2.38.14310.2.38.143
7310.2.38.144/3110.2.38.144 – 10.2.38.14510.2.38.145
7410.2.38.146/3110.2.38.146 – 10.2.38.14710.2.38.147
7510.2.38.148/3110.2.38.148 – 10.2.38.14910.2.38.149
7610.2.38.150/3110.2.38.150 – 10.2.38.15110.2.38.151
7710.2.38.152/3110.2.38.152 – 10.2.38.15310.2.38.153
7810.2.38.154/3110.2.38.154 – 10.2.38.15510.2.38.155
7910.2.38.156/3110.2.38.156 – 10.2.38.15710.2.38.157
8010.2.38.158/3110.2.38.158 – 10.2.38.15910.2.38.159
8110.2.38.160/3110.2.38.160 – 10.2.38.16110.2.38.161
8210.2.38.162/3110.2.38.162 – 10.2.38.16310.2.38.163
8310.2.38.164/3110.2.38.164 – 10.2.38.16510.2.38.165
8410.2.38.166/3110.2.38.166 – 10.2.38.16710.2.38.167
8510.2.38.168/3110.2.38.168 – 10.2.38.16910.2.38.169
8610.2.38.170/3110.2.38.170 – 10.2.38.17110.2.38.171
8710.2.38.172/3110.2.38.172 – 10.2.38.17310.2.38.173
8810.2.38.174/3110.2.38.174 – 10.2.38.17510.2.38.175
8910.2.38.176/3110.2.38.176 – 10.2.38.17710.2.38.177
9010.2.38.178/3110.2.38.178 – 10.2.38.17910.2.38.179
9110.2.38.180/3110.2.38.180 – 10.2.38.18110.2.38.181
9210.2.38.182/3110.2.38.182 – 10.2.38.18310.2.38.183
9310.2.38.184/3110.2.38.184 – 10.2.38.18510.2.38.185
9410.2.38.186/3110.2.38.186 – 10.2.38.18710.2.38.187
9510.2.38.188/3110.2.38.188 – 10.2.38.18910.2.38.189
9610.2.38.190/3110.2.38.190 – 10.2.38.19110.2.38.191
9710.2.38.192/3110.2.38.192 – 10.2.38.19310.2.38.193
9810.2.38.194/3110.2.38.194 – 10.2.38.19510.2.38.195
9910.2.38.196/3110.2.38.196 – 10.2.38.19710.2.38.197
10010.2.38.198/3110.2.38.198 – 10.2.38.19910.2.38.199
10110.2.38.200/3110.2.38.200 – 10.2.38.20110.2.38.201
10210.2.38.202/3110.2.38.202 – 10.2.38.20310.2.38.203
10310.2.38.204/3110.2.38.204 – 10.2.38.20510.2.38.205
10410.2.38.206/3110.2.38.206 – 10.2.38.20710.2.38.207
10510.2.38.208/3110.2.38.208 – 10.2.38.20910.2.38.209
10610.2.38.210/3110.2.38.210 – 10.2.38.21110.2.38.211
10710.2.38.212/3110.2.38.212 – 10.2.38.21310.2.38.213
10810.2.38.214/3110.2.38.214 – 10.2.38.21510.2.38.215
10910.2.38.216/3110.2.38.216 – 10.2.38.21710.2.38.217
11010.2.38.218/3110.2.38.218 – 10.2.38.21910.2.38.219
11110.2.38.220/3110.2.38.220 – 10.2.38.22110.2.38.221
11210.2.38.222/3110.2.38.222 – 10.2.38.22310.2.38.223
11310.2.38.224/3110.2.38.224 – 10.2.38.22510.2.38.225
11410.2.38.226/3110.2.38.226 – 10.2.38.22710.2.38.227
11510.2.38.228/3110.2.38.228 – 10.2.38.22910.2.38.229
11610.2.38.230/3110.2.38.230 – 10.2.38.23110.2.38.231
11710.2.38.232/3110.2.38.232 – 10.2.38.23310.2.38.233
11810.2.38.234/3110.2.38.234 – 10.2.38.23510.2.38.235
11910.2.38.236/3110.2.38.236 – 10.2.38.23710.2.38.237
12010.2.38.238/3110.2.38.238 – 10.2.38.23910.2.38.239
12110.2.38.240/3110.2.38.240 – 10.2.38.24110.2.38.241
12210.2.38.242/3110.2.38.242 – 10.2.38.24310.2.38.243
12310.2.38.244/3110.2.38.244 – 10.2.38.24510.2.38.245
12410.2.38.246/3110.2.38.246 – 10.2.38.24710.2.38.247
12510.2.38.248/3110.2.38.248 – 10.2.38.24910.2.38.249
12610.2.38.250/3110.2.38.250 – 10.2.38.25110.2.38.251
12710.2.38.252/3110.2.38.252 – 10.2.38.25310.2.38.253
12810.2.38.254/3110.2.38.254 – 10.2.38.25510.2.38.255
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 →