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)10.167.19.0/24
network10.167.19.0/24
broadcast10.167.19.255
first host10.167.19.1
last host10.167.19.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.167.19.0/24
address00001010.10100111.00010011.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10100111.00010011.00000000
broadcast00001010.10100111.00010011.11111111
green = network part, grey = host part
hex0x0aa71300
decimal178721536
reverse dns0.19.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:1300

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.19.0/3110.167.19.0 – 10.167.19.110.167.19.1
210.167.19.2/3110.167.19.2 – 10.167.19.310.167.19.3
310.167.19.4/3110.167.19.4 – 10.167.19.510.167.19.5
410.167.19.6/3110.167.19.6 – 10.167.19.710.167.19.7
510.167.19.8/3110.167.19.8 – 10.167.19.910.167.19.9
610.167.19.10/3110.167.19.10 – 10.167.19.1110.167.19.11
710.167.19.12/3110.167.19.12 – 10.167.19.1310.167.19.13
810.167.19.14/3110.167.19.14 – 10.167.19.1510.167.19.15
910.167.19.16/3110.167.19.16 – 10.167.19.1710.167.19.17
1010.167.19.18/3110.167.19.18 – 10.167.19.1910.167.19.19
1110.167.19.20/3110.167.19.20 – 10.167.19.2110.167.19.21
1210.167.19.22/3110.167.19.22 – 10.167.19.2310.167.19.23
1310.167.19.24/3110.167.19.24 – 10.167.19.2510.167.19.25
1410.167.19.26/3110.167.19.26 – 10.167.19.2710.167.19.27
1510.167.19.28/3110.167.19.28 – 10.167.19.2910.167.19.29
1610.167.19.30/3110.167.19.30 – 10.167.19.3110.167.19.31
1710.167.19.32/3110.167.19.32 – 10.167.19.3310.167.19.33
1810.167.19.34/3110.167.19.34 – 10.167.19.3510.167.19.35
1910.167.19.36/3110.167.19.36 – 10.167.19.3710.167.19.37
2010.167.19.38/3110.167.19.38 – 10.167.19.3910.167.19.39
2110.167.19.40/3110.167.19.40 – 10.167.19.4110.167.19.41
2210.167.19.42/3110.167.19.42 – 10.167.19.4310.167.19.43
2310.167.19.44/3110.167.19.44 – 10.167.19.4510.167.19.45
2410.167.19.46/3110.167.19.46 – 10.167.19.4710.167.19.47
2510.167.19.48/3110.167.19.48 – 10.167.19.4910.167.19.49
2610.167.19.50/3110.167.19.50 – 10.167.19.5110.167.19.51
2710.167.19.52/3110.167.19.52 – 10.167.19.5310.167.19.53
2810.167.19.54/3110.167.19.54 – 10.167.19.5510.167.19.55
2910.167.19.56/3110.167.19.56 – 10.167.19.5710.167.19.57
3010.167.19.58/3110.167.19.58 – 10.167.19.5910.167.19.59
3110.167.19.60/3110.167.19.60 – 10.167.19.6110.167.19.61
3210.167.19.62/3110.167.19.62 – 10.167.19.6310.167.19.63
3310.167.19.64/3110.167.19.64 – 10.167.19.6510.167.19.65
3410.167.19.66/3110.167.19.66 – 10.167.19.6710.167.19.67
3510.167.19.68/3110.167.19.68 – 10.167.19.6910.167.19.69
3610.167.19.70/3110.167.19.70 – 10.167.19.7110.167.19.71
3710.167.19.72/3110.167.19.72 – 10.167.19.7310.167.19.73
3810.167.19.74/3110.167.19.74 – 10.167.19.7510.167.19.75
3910.167.19.76/3110.167.19.76 – 10.167.19.7710.167.19.77
4010.167.19.78/3110.167.19.78 – 10.167.19.7910.167.19.79
4110.167.19.80/3110.167.19.80 – 10.167.19.8110.167.19.81
4210.167.19.82/3110.167.19.82 – 10.167.19.8310.167.19.83
4310.167.19.84/3110.167.19.84 – 10.167.19.8510.167.19.85
4410.167.19.86/3110.167.19.86 – 10.167.19.8710.167.19.87
4510.167.19.88/3110.167.19.88 – 10.167.19.8910.167.19.89
4610.167.19.90/3110.167.19.90 – 10.167.19.9110.167.19.91
4710.167.19.92/3110.167.19.92 – 10.167.19.9310.167.19.93
4810.167.19.94/3110.167.19.94 – 10.167.19.9510.167.19.95
4910.167.19.96/3110.167.19.96 – 10.167.19.9710.167.19.97
5010.167.19.98/3110.167.19.98 – 10.167.19.9910.167.19.99
5110.167.19.100/3110.167.19.100 – 10.167.19.10110.167.19.101
5210.167.19.102/3110.167.19.102 – 10.167.19.10310.167.19.103
5310.167.19.104/3110.167.19.104 – 10.167.19.10510.167.19.105
5410.167.19.106/3110.167.19.106 – 10.167.19.10710.167.19.107
5510.167.19.108/3110.167.19.108 – 10.167.19.10910.167.19.109
5610.167.19.110/3110.167.19.110 – 10.167.19.11110.167.19.111
5710.167.19.112/3110.167.19.112 – 10.167.19.11310.167.19.113
5810.167.19.114/3110.167.19.114 – 10.167.19.11510.167.19.115
5910.167.19.116/3110.167.19.116 – 10.167.19.11710.167.19.117
6010.167.19.118/3110.167.19.118 – 10.167.19.11910.167.19.119
6110.167.19.120/3110.167.19.120 – 10.167.19.12110.167.19.121
6210.167.19.122/3110.167.19.122 – 10.167.19.12310.167.19.123
6310.167.19.124/3110.167.19.124 – 10.167.19.12510.167.19.125
6410.167.19.126/3110.167.19.126 – 10.167.19.12710.167.19.127
6510.167.19.128/3110.167.19.128 – 10.167.19.12910.167.19.129
6610.167.19.130/3110.167.19.130 – 10.167.19.13110.167.19.131
6710.167.19.132/3110.167.19.132 – 10.167.19.13310.167.19.133
6810.167.19.134/3110.167.19.134 – 10.167.19.13510.167.19.135
6910.167.19.136/3110.167.19.136 – 10.167.19.13710.167.19.137
7010.167.19.138/3110.167.19.138 – 10.167.19.13910.167.19.139
7110.167.19.140/3110.167.19.140 – 10.167.19.14110.167.19.141
7210.167.19.142/3110.167.19.142 – 10.167.19.14310.167.19.143
7310.167.19.144/3110.167.19.144 – 10.167.19.14510.167.19.145
7410.167.19.146/3110.167.19.146 – 10.167.19.14710.167.19.147
7510.167.19.148/3110.167.19.148 – 10.167.19.14910.167.19.149
7610.167.19.150/3110.167.19.150 – 10.167.19.15110.167.19.151
7710.167.19.152/3110.167.19.152 – 10.167.19.15310.167.19.153
7810.167.19.154/3110.167.19.154 – 10.167.19.15510.167.19.155
7910.167.19.156/3110.167.19.156 – 10.167.19.15710.167.19.157
8010.167.19.158/3110.167.19.158 – 10.167.19.15910.167.19.159
8110.167.19.160/3110.167.19.160 – 10.167.19.16110.167.19.161
8210.167.19.162/3110.167.19.162 – 10.167.19.16310.167.19.163
8310.167.19.164/3110.167.19.164 – 10.167.19.16510.167.19.165
8410.167.19.166/3110.167.19.166 – 10.167.19.16710.167.19.167
8510.167.19.168/3110.167.19.168 – 10.167.19.16910.167.19.169
8610.167.19.170/3110.167.19.170 – 10.167.19.17110.167.19.171
8710.167.19.172/3110.167.19.172 – 10.167.19.17310.167.19.173
8810.167.19.174/3110.167.19.174 – 10.167.19.17510.167.19.175
8910.167.19.176/3110.167.19.176 – 10.167.19.17710.167.19.177
9010.167.19.178/3110.167.19.178 – 10.167.19.17910.167.19.179
9110.167.19.180/3110.167.19.180 – 10.167.19.18110.167.19.181
9210.167.19.182/3110.167.19.182 – 10.167.19.18310.167.19.183
9310.167.19.184/3110.167.19.184 – 10.167.19.18510.167.19.185
9410.167.19.186/3110.167.19.186 – 10.167.19.18710.167.19.187
9510.167.19.188/3110.167.19.188 – 10.167.19.18910.167.19.189
9610.167.19.190/3110.167.19.190 – 10.167.19.19110.167.19.191
9710.167.19.192/3110.167.19.192 – 10.167.19.19310.167.19.193
9810.167.19.194/3110.167.19.194 – 10.167.19.19510.167.19.195
9910.167.19.196/3110.167.19.196 – 10.167.19.19710.167.19.197
10010.167.19.198/3110.167.19.198 – 10.167.19.19910.167.19.199
10110.167.19.200/3110.167.19.200 – 10.167.19.20110.167.19.201
10210.167.19.202/3110.167.19.202 – 10.167.19.20310.167.19.203
10310.167.19.204/3110.167.19.204 – 10.167.19.20510.167.19.205
10410.167.19.206/3110.167.19.206 – 10.167.19.20710.167.19.207
10510.167.19.208/3110.167.19.208 – 10.167.19.20910.167.19.209
10610.167.19.210/3110.167.19.210 – 10.167.19.21110.167.19.211
10710.167.19.212/3110.167.19.212 – 10.167.19.21310.167.19.213
10810.167.19.214/3110.167.19.214 – 10.167.19.21510.167.19.215
10910.167.19.216/3110.167.19.216 – 10.167.19.21710.167.19.217
11010.167.19.218/3110.167.19.218 – 10.167.19.21910.167.19.219
11110.167.19.220/3110.167.19.220 – 10.167.19.22110.167.19.221
11210.167.19.222/3110.167.19.222 – 10.167.19.22310.167.19.223
11310.167.19.224/3110.167.19.224 – 10.167.19.22510.167.19.225
11410.167.19.226/3110.167.19.226 – 10.167.19.22710.167.19.227
11510.167.19.228/3110.167.19.228 – 10.167.19.22910.167.19.229
11610.167.19.230/3110.167.19.230 – 10.167.19.23110.167.19.231
11710.167.19.232/3110.167.19.232 – 10.167.19.23310.167.19.233
11810.167.19.234/3110.167.19.234 – 10.167.19.23510.167.19.235
11910.167.19.236/3110.167.19.236 – 10.167.19.23710.167.19.237
12010.167.19.238/3110.167.19.238 – 10.167.19.23910.167.19.239
12110.167.19.240/3110.167.19.240 – 10.167.19.24110.167.19.241
12210.167.19.242/3110.167.19.242 – 10.167.19.24310.167.19.243
12310.167.19.244/3110.167.19.244 – 10.167.19.24510.167.19.245
12410.167.19.246/3110.167.19.246 – 10.167.19.24710.167.19.247
12510.167.19.248/3110.167.19.248 – 10.167.19.24910.167.19.249
12610.167.19.250/3110.167.19.250 – 10.167.19.25110.167.19.251
12710.167.19.252/3110.167.19.252 – 10.167.19.25310.167.19.253
12810.167.19.254/3110.167.19.254 – 10.167.19.25510.167.19.255
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 →