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)10.178.4.0/24
network10.178.4.0/24
broadcast10.178.4.255
first host10.178.4.1
last host10.178.4.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.178.4.0/24
address00001010.10110010.00000100.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10110010.00000100.00000000
broadcast00001010.10110010.00000100.11111111
green = network part, grey = host part
hex0x0ab20400
decimal179438592
reverse dns0.4.178.10.in-addr.arpa
ipv4-mapped::ffff:ab2:400

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.178.4.0/3110.178.4.0 – 10.178.4.110.178.4.1
210.178.4.2/3110.178.4.2 – 10.178.4.310.178.4.3
310.178.4.4/3110.178.4.4 – 10.178.4.510.178.4.5
410.178.4.6/3110.178.4.6 – 10.178.4.710.178.4.7
510.178.4.8/3110.178.4.8 – 10.178.4.910.178.4.9
610.178.4.10/3110.178.4.10 – 10.178.4.1110.178.4.11
710.178.4.12/3110.178.4.12 – 10.178.4.1310.178.4.13
810.178.4.14/3110.178.4.14 – 10.178.4.1510.178.4.15
910.178.4.16/3110.178.4.16 – 10.178.4.1710.178.4.17
1010.178.4.18/3110.178.4.18 – 10.178.4.1910.178.4.19
1110.178.4.20/3110.178.4.20 – 10.178.4.2110.178.4.21
1210.178.4.22/3110.178.4.22 – 10.178.4.2310.178.4.23
1310.178.4.24/3110.178.4.24 – 10.178.4.2510.178.4.25
1410.178.4.26/3110.178.4.26 – 10.178.4.2710.178.4.27
1510.178.4.28/3110.178.4.28 – 10.178.4.2910.178.4.29
1610.178.4.30/3110.178.4.30 – 10.178.4.3110.178.4.31
1710.178.4.32/3110.178.4.32 – 10.178.4.3310.178.4.33
1810.178.4.34/3110.178.4.34 – 10.178.4.3510.178.4.35
1910.178.4.36/3110.178.4.36 – 10.178.4.3710.178.4.37
2010.178.4.38/3110.178.4.38 – 10.178.4.3910.178.4.39
2110.178.4.40/3110.178.4.40 – 10.178.4.4110.178.4.41
2210.178.4.42/3110.178.4.42 – 10.178.4.4310.178.4.43
2310.178.4.44/3110.178.4.44 – 10.178.4.4510.178.4.45
2410.178.4.46/3110.178.4.46 – 10.178.4.4710.178.4.47
2510.178.4.48/3110.178.4.48 – 10.178.4.4910.178.4.49
2610.178.4.50/3110.178.4.50 – 10.178.4.5110.178.4.51
2710.178.4.52/3110.178.4.52 – 10.178.4.5310.178.4.53
2810.178.4.54/3110.178.4.54 – 10.178.4.5510.178.4.55
2910.178.4.56/3110.178.4.56 – 10.178.4.5710.178.4.57
3010.178.4.58/3110.178.4.58 – 10.178.4.5910.178.4.59
3110.178.4.60/3110.178.4.60 – 10.178.4.6110.178.4.61
3210.178.4.62/3110.178.4.62 – 10.178.4.6310.178.4.63
3310.178.4.64/3110.178.4.64 – 10.178.4.6510.178.4.65
3410.178.4.66/3110.178.4.66 – 10.178.4.6710.178.4.67
3510.178.4.68/3110.178.4.68 – 10.178.4.6910.178.4.69
3610.178.4.70/3110.178.4.70 – 10.178.4.7110.178.4.71
3710.178.4.72/3110.178.4.72 – 10.178.4.7310.178.4.73
3810.178.4.74/3110.178.4.74 – 10.178.4.7510.178.4.75
3910.178.4.76/3110.178.4.76 – 10.178.4.7710.178.4.77
4010.178.4.78/3110.178.4.78 – 10.178.4.7910.178.4.79
4110.178.4.80/3110.178.4.80 – 10.178.4.8110.178.4.81
4210.178.4.82/3110.178.4.82 – 10.178.4.8310.178.4.83
4310.178.4.84/3110.178.4.84 – 10.178.4.8510.178.4.85
4410.178.4.86/3110.178.4.86 – 10.178.4.8710.178.4.87
4510.178.4.88/3110.178.4.88 – 10.178.4.8910.178.4.89
4610.178.4.90/3110.178.4.90 – 10.178.4.9110.178.4.91
4710.178.4.92/3110.178.4.92 – 10.178.4.9310.178.4.93
4810.178.4.94/3110.178.4.94 – 10.178.4.9510.178.4.95
4910.178.4.96/3110.178.4.96 – 10.178.4.9710.178.4.97
5010.178.4.98/3110.178.4.98 – 10.178.4.9910.178.4.99
5110.178.4.100/3110.178.4.100 – 10.178.4.10110.178.4.101
5210.178.4.102/3110.178.4.102 – 10.178.4.10310.178.4.103
5310.178.4.104/3110.178.4.104 – 10.178.4.10510.178.4.105
5410.178.4.106/3110.178.4.106 – 10.178.4.10710.178.4.107
5510.178.4.108/3110.178.4.108 – 10.178.4.10910.178.4.109
5610.178.4.110/3110.178.4.110 – 10.178.4.11110.178.4.111
5710.178.4.112/3110.178.4.112 – 10.178.4.11310.178.4.113
5810.178.4.114/3110.178.4.114 – 10.178.4.11510.178.4.115
5910.178.4.116/3110.178.4.116 – 10.178.4.11710.178.4.117
6010.178.4.118/3110.178.4.118 – 10.178.4.11910.178.4.119
6110.178.4.120/3110.178.4.120 – 10.178.4.12110.178.4.121
6210.178.4.122/3110.178.4.122 – 10.178.4.12310.178.4.123
6310.178.4.124/3110.178.4.124 – 10.178.4.12510.178.4.125
6410.178.4.126/3110.178.4.126 – 10.178.4.12710.178.4.127
6510.178.4.128/3110.178.4.128 – 10.178.4.12910.178.4.129
6610.178.4.130/3110.178.4.130 – 10.178.4.13110.178.4.131
6710.178.4.132/3110.178.4.132 – 10.178.4.13310.178.4.133
6810.178.4.134/3110.178.4.134 – 10.178.4.13510.178.4.135
6910.178.4.136/3110.178.4.136 – 10.178.4.13710.178.4.137
7010.178.4.138/3110.178.4.138 – 10.178.4.13910.178.4.139
7110.178.4.140/3110.178.4.140 – 10.178.4.14110.178.4.141
7210.178.4.142/3110.178.4.142 – 10.178.4.14310.178.4.143
7310.178.4.144/3110.178.4.144 – 10.178.4.14510.178.4.145
7410.178.4.146/3110.178.4.146 – 10.178.4.14710.178.4.147
7510.178.4.148/3110.178.4.148 – 10.178.4.14910.178.4.149
7610.178.4.150/3110.178.4.150 – 10.178.4.15110.178.4.151
7710.178.4.152/3110.178.4.152 – 10.178.4.15310.178.4.153
7810.178.4.154/3110.178.4.154 – 10.178.4.15510.178.4.155
7910.178.4.156/3110.178.4.156 – 10.178.4.15710.178.4.157
8010.178.4.158/3110.178.4.158 – 10.178.4.15910.178.4.159
8110.178.4.160/3110.178.4.160 – 10.178.4.16110.178.4.161
8210.178.4.162/3110.178.4.162 – 10.178.4.16310.178.4.163
8310.178.4.164/3110.178.4.164 – 10.178.4.16510.178.4.165
8410.178.4.166/3110.178.4.166 – 10.178.4.16710.178.4.167
8510.178.4.168/3110.178.4.168 – 10.178.4.16910.178.4.169
8610.178.4.170/3110.178.4.170 – 10.178.4.17110.178.4.171
8710.178.4.172/3110.178.4.172 – 10.178.4.17310.178.4.173
8810.178.4.174/3110.178.4.174 – 10.178.4.17510.178.4.175
8910.178.4.176/3110.178.4.176 – 10.178.4.17710.178.4.177
9010.178.4.178/3110.178.4.178 – 10.178.4.17910.178.4.179
9110.178.4.180/3110.178.4.180 – 10.178.4.18110.178.4.181
9210.178.4.182/3110.178.4.182 – 10.178.4.18310.178.4.183
9310.178.4.184/3110.178.4.184 – 10.178.4.18510.178.4.185
9410.178.4.186/3110.178.4.186 – 10.178.4.18710.178.4.187
9510.178.4.188/3110.178.4.188 – 10.178.4.18910.178.4.189
9610.178.4.190/3110.178.4.190 – 10.178.4.19110.178.4.191
9710.178.4.192/3110.178.4.192 – 10.178.4.19310.178.4.193
9810.178.4.194/3110.178.4.194 – 10.178.4.19510.178.4.195
9910.178.4.196/3110.178.4.196 – 10.178.4.19710.178.4.197
10010.178.4.198/3110.178.4.198 – 10.178.4.19910.178.4.199
10110.178.4.200/3110.178.4.200 – 10.178.4.20110.178.4.201
10210.178.4.202/3110.178.4.202 – 10.178.4.20310.178.4.203
10310.178.4.204/3110.178.4.204 – 10.178.4.20510.178.4.205
10410.178.4.206/3110.178.4.206 – 10.178.4.20710.178.4.207
10510.178.4.208/3110.178.4.208 – 10.178.4.20910.178.4.209
10610.178.4.210/3110.178.4.210 – 10.178.4.21110.178.4.211
10710.178.4.212/3110.178.4.212 – 10.178.4.21310.178.4.213
10810.178.4.214/3110.178.4.214 – 10.178.4.21510.178.4.215
10910.178.4.216/3110.178.4.216 – 10.178.4.21710.178.4.217
11010.178.4.218/3110.178.4.218 – 10.178.4.21910.178.4.219
11110.178.4.220/3110.178.4.220 – 10.178.4.22110.178.4.221
11210.178.4.222/3110.178.4.222 – 10.178.4.22310.178.4.223
11310.178.4.224/3110.178.4.224 – 10.178.4.22510.178.4.225
11410.178.4.226/3110.178.4.226 – 10.178.4.22710.178.4.227
11510.178.4.228/3110.178.4.228 – 10.178.4.22910.178.4.229
11610.178.4.230/3110.178.4.230 – 10.178.4.23110.178.4.231
11710.178.4.232/3110.178.4.232 – 10.178.4.23310.178.4.233
11810.178.4.234/3110.178.4.234 – 10.178.4.23510.178.4.235
11910.178.4.236/3110.178.4.236 – 10.178.4.23710.178.4.237
12010.178.4.238/3110.178.4.238 – 10.178.4.23910.178.4.239
12110.178.4.240/3110.178.4.240 – 10.178.4.24110.178.4.241
12210.178.4.242/3110.178.4.242 – 10.178.4.24310.178.4.243
12310.178.4.244/3110.178.4.244 – 10.178.4.24510.178.4.245
12410.178.4.246/3110.178.4.246 – 10.178.4.24710.178.4.247
12510.178.4.248/3110.178.4.248 – 10.178.4.24910.178.4.249
12610.178.4.250/3110.178.4.250 – 10.178.4.25110.178.4.251
12710.178.4.252/3110.178.4.252 – 10.178.4.25310.178.4.253
12810.178.4.254/3110.178.4.254 – 10.178.4.25510.178.4.255
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 →