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)10.167.125.0/24
network10.167.125.0/24
broadcast10.167.125.255
first host10.167.125.1
last host10.167.125.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.167.125.0/24
address00001010.10100111.01111101.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10100111.01111101.00000000
broadcast00001010.10100111.01111101.11111111
green = network part, grey = host part
hex0x0aa77d00
decimal178748672
reverse dns0.125.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:7d00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.125.0/3110.167.125.0 – 10.167.125.110.167.125.1
210.167.125.2/3110.167.125.2 – 10.167.125.310.167.125.3
310.167.125.4/3110.167.125.4 – 10.167.125.510.167.125.5
410.167.125.6/3110.167.125.6 – 10.167.125.710.167.125.7
510.167.125.8/3110.167.125.8 – 10.167.125.910.167.125.9
610.167.125.10/3110.167.125.10 – 10.167.125.1110.167.125.11
710.167.125.12/3110.167.125.12 – 10.167.125.1310.167.125.13
810.167.125.14/3110.167.125.14 – 10.167.125.1510.167.125.15
910.167.125.16/3110.167.125.16 – 10.167.125.1710.167.125.17
1010.167.125.18/3110.167.125.18 – 10.167.125.1910.167.125.19
1110.167.125.20/3110.167.125.20 – 10.167.125.2110.167.125.21
1210.167.125.22/3110.167.125.22 – 10.167.125.2310.167.125.23
1310.167.125.24/3110.167.125.24 – 10.167.125.2510.167.125.25
1410.167.125.26/3110.167.125.26 – 10.167.125.2710.167.125.27
1510.167.125.28/3110.167.125.28 – 10.167.125.2910.167.125.29
1610.167.125.30/3110.167.125.30 – 10.167.125.3110.167.125.31
1710.167.125.32/3110.167.125.32 – 10.167.125.3310.167.125.33
1810.167.125.34/3110.167.125.34 – 10.167.125.3510.167.125.35
1910.167.125.36/3110.167.125.36 – 10.167.125.3710.167.125.37
2010.167.125.38/3110.167.125.38 – 10.167.125.3910.167.125.39
2110.167.125.40/3110.167.125.40 – 10.167.125.4110.167.125.41
2210.167.125.42/3110.167.125.42 – 10.167.125.4310.167.125.43
2310.167.125.44/3110.167.125.44 – 10.167.125.4510.167.125.45
2410.167.125.46/3110.167.125.46 – 10.167.125.4710.167.125.47
2510.167.125.48/3110.167.125.48 – 10.167.125.4910.167.125.49
2610.167.125.50/3110.167.125.50 – 10.167.125.5110.167.125.51
2710.167.125.52/3110.167.125.52 – 10.167.125.5310.167.125.53
2810.167.125.54/3110.167.125.54 – 10.167.125.5510.167.125.55
2910.167.125.56/3110.167.125.56 – 10.167.125.5710.167.125.57
3010.167.125.58/3110.167.125.58 – 10.167.125.5910.167.125.59
3110.167.125.60/3110.167.125.60 – 10.167.125.6110.167.125.61
3210.167.125.62/3110.167.125.62 – 10.167.125.6310.167.125.63
3310.167.125.64/3110.167.125.64 – 10.167.125.6510.167.125.65
3410.167.125.66/3110.167.125.66 – 10.167.125.6710.167.125.67
3510.167.125.68/3110.167.125.68 – 10.167.125.6910.167.125.69
3610.167.125.70/3110.167.125.70 – 10.167.125.7110.167.125.71
3710.167.125.72/3110.167.125.72 – 10.167.125.7310.167.125.73
3810.167.125.74/3110.167.125.74 – 10.167.125.7510.167.125.75
3910.167.125.76/3110.167.125.76 – 10.167.125.7710.167.125.77
4010.167.125.78/3110.167.125.78 – 10.167.125.7910.167.125.79
4110.167.125.80/3110.167.125.80 – 10.167.125.8110.167.125.81
4210.167.125.82/3110.167.125.82 – 10.167.125.8310.167.125.83
4310.167.125.84/3110.167.125.84 – 10.167.125.8510.167.125.85
4410.167.125.86/3110.167.125.86 – 10.167.125.8710.167.125.87
4510.167.125.88/3110.167.125.88 – 10.167.125.8910.167.125.89
4610.167.125.90/3110.167.125.90 – 10.167.125.9110.167.125.91
4710.167.125.92/3110.167.125.92 – 10.167.125.9310.167.125.93
4810.167.125.94/3110.167.125.94 – 10.167.125.9510.167.125.95
4910.167.125.96/3110.167.125.96 – 10.167.125.9710.167.125.97
5010.167.125.98/3110.167.125.98 – 10.167.125.9910.167.125.99
5110.167.125.100/3110.167.125.100 – 10.167.125.10110.167.125.101
5210.167.125.102/3110.167.125.102 – 10.167.125.10310.167.125.103
5310.167.125.104/3110.167.125.104 – 10.167.125.10510.167.125.105
5410.167.125.106/3110.167.125.106 – 10.167.125.10710.167.125.107
5510.167.125.108/3110.167.125.108 – 10.167.125.10910.167.125.109
5610.167.125.110/3110.167.125.110 – 10.167.125.11110.167.125.111
5710.167.125.112/3110.167.125.112 – 10.167.125.11310.167.125.113
5810.167.125.114/3110.167.125.114 – 10.167.125.11510.167.125.115
5910.167.125.116/3110.167.125.116 – 10.167.125.11710.167.125.117
6010.167.125.118/3110.167.125.118 – 10.167.125.11910.167.125.119
6110.167.125.120/3110.167.125.120 – 10.167.125.12110.167.125.121
6210.167.125.122/3110.167.125.122 – 10.167.125.12310.167.125.123
6310.167.125.124/3110.167.125.124 – 10.167.125.12510.167.125.125
6410.167.125.126/3110.167.125.126 – 10.167.125.12710.167.125.127
6510.167.125.128/3110.167.125.128 – 10.167.125.12910.167.125.129
6610.167.125.130/3110.167.125.130 – 10.167.125.13110.167.125.131
6710.167.125.132/3110.167.125.132 – 10.167.125.13310.167.125.133
6810.167.125.134/3110.167.125.134 – 10.167.125.13510.167.125.135
6910.167.125.136/3110.167.125.136 – 10.167.125.13710.167.125.137
7010.167.125.138/3110.167.125.138 – 10.167.125.13910.167.125.139
7110.167.125.140/3110.167.125.140 – 10.167.125.14110.167.125.141
7210.167.125.142/3110.167.125.142 – 10.167.125.14310.167.125.143
7310.167.125.144/3110.167.125.144 – 10.167.125.14510.167.125.145
7410.167.125.146/3110.167.125.146 – 10.167.125.14710.167.125.147
7510.167.125.148/3110.167.125.148 – 10.167.125.14910.167.125.149
7610.167.125.150/3110.167.125.150 – 10.167.125.15110.167.125.151
7710.167.125.152/3110.167.125.152 – 10.167.125.15310.167.125.153
7810.167.125.154/3110.167.125.154 – 10.167.125.15510.167.125.155
7910.167.125.156/3110.167.125.156 – 10.167.125.15710.167.125.157
8010.167.125.158/3110.167.125.158 – 10.167.125.15910.167.125.159
8110.167.125.160/3110.167.125.160 – 10.167.125.16110.167.125.161
8210.167.125.162/3110.167.125.162 – 10.167.125.16310.167.125.163
8310.167.125.164/3110.167.125.164 – 10.167.125.16510.167.125.165
8410.167.125.166/3110.167.125.166 – 10.167.125.16710.167.125.167
8510.167.125.168/3110.167.125.168 – 10.167.125.16910.167.125.169
8610.167.125.170/3110.167.125.170 – 10.167.125.17110.167.125.171
8710.167.125.172/3110.167.125.172 – 10.167.125.17310.167.125.173
8810.167.125.174/3110.167.125.174 – 10.167.125.17510.167.125.175
8910.167.125.176/3110.167.125.176 – 10.167.125.17710.167.125.177
9010.167.125.178/3110.167.125.178 – 10.167.125.17910.167.125.179
9110.167.125.180/3110.167.125.180 – 10.167.125.18110.167.125.181
9210.167.125.182/3110.167.125.182 – 10.167.125.18310.167.125.183
9310.167.125.184/3110.167.125.184 – 10.167.125.18510.167.125.185
9410.167.125.186/3110.167.125.186 – 10.167.125.18710.167.125.187
9510.167.125.188/3110.167.125.188 – 10.167.125.18910.167.125.189
9610.167.125.190/3110.167.125.190 – 10.167.125.19110.167.125.191
9710.167.125.192/3110.167.125.192 – 10.167.125.19310.167.125.193
9810.167.125.194/3110.167.125.194 – 10.167.125.19510.167.125.195
9910.167.125.196/3110.167.125.196 – 10.167.125.19710.167.125.197
10010.167.125.198/3110.167.125.198 – 10.167.125.19910.167.125.199
10110.167.125.200/3110.167.125.200 – 10.167.125.20110.167.125.201
10210.167.125.202/3110.167.125.202 – 10.167.125.20310.167.125.203
10310.167.125.204/3110.167.125.204 – 10.167.125.20510.167.125.205
10410.167.125.206/3110.167.125.206 – 10.167.125.20710.167.125.207
10510.167.125.208/3110.167.125.208 – 10.167.125.20910.167.125.209
10610.167.125.210/3110.167.125.210 – 10.167.125.21110.167.125.211
10710.167.125.212/3110.167.125.212 – 10.167.125.21310.167.125.213
10810.167.125.214/3110.167.125.214 – 10.167.125.21510.167.125.215
10910.167.125.216/3110.167.125.216 – 10.167.125.21710.167.125.217
11010.167.125.218/3110.167.125.218 – 10.167.125.21910.167.125.219
11110.167.125.220/3110.167.125.220 – 10.167.125.22110.167.125.221
11210.167.125.222/3110.167.125.222 – 10.167.125.22310.167.125.223
11310.167.125.224/3110.167.125.224 – 10.167.125.22510.167.125.225
11410.167.125.226/3110.167.125.226 – 10.167.125.22710.167.125.227
11510.167.125.228/3110.167.125.228 – 10.167.125.22910.167.125.229
11610.167.125.230/3110.167.125.230 – 10.167.125.23110.167.125.231
11710.167.125.232/3110.167.125.232 – 10.167.125.23310.167.125.233
11810.167.125.234/3110.167.125.234 – 10.167.125.23510.167.125.235
11910.167.125.236/3110.167.125.236 – 10.167.125.23710.167.125.237
12010.167.125.238/3110.167.125.238 – 10.167.125.23910.167.125.239
12110.167.125.240/3110.167.125.240 – 10.167.125.24110.167.125.241
12210.167.125.242/3110.167.125.242 – 10.167.125.24310.167.125.243
12310.167.125.244/3110.167.125.244 – 10.167.125.24510.167.125.245
12410.167.125.246/3110.167.125.246 – 10.167.125.24710.167.125.247
12510.167.125.248/3110.167.125.248 – 10.167.125.24910.167.125.249
12610.167.125.250/3110.167.125.250 – 10.167.125.25110.167.125.251
12710.167.125.252/3110.167.125.252 – 10.167.125.25310.167.125.253
12810.167.125.254/3110.167.125.254 – 10.167.125.25510.167.125.255
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 →