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)10.4.97.0/24
network10.4.97.0/24
broadcast10.4.97.255
first host10.4.97.1
last host10.4.97.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.4.97.0/24
address00001010.00000100.01100001.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000100.01100001.00000000
broadcast00001010.00000100.01100001.11111111
green = network part, grey = host part
hex0x0a046100
decimal168059136
reverse dns0.97.4.10.in-addr.arpa
ipv4-mapped::ffff:a04:6100

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.4.97.0/3110.4.97.0 – 10.4.97.110.4.97.1
210.4.97.2/3110.4.97.2 – 10.4.97.310.4.97.3
310.4.97.4/3110.4.97.4 – 10.4.97.510.4.97.5
410.4.97.6/3110.4.97.6 – 10.4.97.710.4.97.7
510.4.97.8/3110.4.97.8 – 10.4.97.910.4.97.9
610.4.97.10/3110.4.97.10 – 10.4.97.1110.4.97.11
710.4.97.12/3110.4.97.12 – 10.4.97.1310.4.97.13
810.4.97.14/3110.4.97.14 – 10.4.97.1510.4.97.15
910.4.97.16/3110.4.97.16 – 10.4.97.1710.4.97.17
1010.4.97.18/3110.4.97.18 – 10.4.97.1910.4.97.19
1110.4.97.20/3110.4.97.20 – 10.4.97.2110.4.97.21
1210.4.97.22/3110.4.97.22 – 10.4.97.2310.4.97.23
1310.4.97.24/3110.4.97.24 – 10.4.97.2510.4.97.25
1410.4.97.26/3110.4.97.26 – 10.4.97.2710.4.97.27
1510.4.97.28/3110.4.97.28 – 10.4.97.2910.4.97.29
1610.4.97.30/3110.4.97.30 – 10.4.97.3110.4.97.31
1710.4.97.32/3110.4.97.32 – 10.4.97.3310.4.97.33
1810.4.97.34/3110.4.97.34 – 10.4.97.3510.4.97.35
1910.4.97.36/3110.4.97.36 – 10.4.97.3710.4.97.37
2010.4.97.38/3110.4.97.38 – 10.4.97.3910.4.97.39
2110.4.97.40/3110.4.97.40 – 10.4.97.4110.4.97.41
2210.4.97.42/3110.4.97.42 – 10.4.97.4310.4.97.43
2310.4.97.44/3110.4.97.44 – 10.4.97.4510.4.97.45
2410.4.97.46/3110.4.97.46 – 10.4.97.4710.4.97.47
2510.4.97.48/3110.4.97.48 – 10.4.97.4910.4.97.49
2610.4.97.50/3110.4.97.50 – 10.4.97.5110.4.97.51
2710.4.97.52/3110.4.97.52 – 10.4.97.5310.4.97.53
2810.4.97.54/3110.4.97.54 – 10.4.97.5510.4.97.55
2910.4.97.56/3110.4.97.56 – 10.4.97.5710.4.97.57
3010.4.97.58/3110.4.97.58 – 10.4.97.5910.4.97.59
3110.4.97.60/3110.4.97.60 – 10.4.97.6110.4.97.61
3210.4.97.62/3110.4.97.62 – 10.4.97.6310.4.97.63
3310.4.97.64/3110.4.97.64 – 10.4.97.6510.4.97.65
3410.4.97.66/3110.4.97.66 – 10.4.97.6710.4.97.67
3510.4.97.68/3110.4.97.68 – 10.4.97.6910.4.97.69
3610.4.97.70/3110.4.97.70 – 10.4.97.7110.4.97.71
3710.4.97.72/3110.4.97.72 – 10.4.97.7310.4.97.73
3810.4.97.74/3110.4.97.74 – 10.4.97.7510.4.97.75
3910.4.97.76/3110.4.97.76 – 10.4.97.7710.4.97.77
4010.4.97.78/3110.4.97.78 – 10.4.97.7910.4.97.79
4110.4.97.80/3110.4.97.80 – 10.4.97.8110.4.97.81
4210.4.97.82/3110.4.97.82 – 10.4.97.8310.4.97.83
4310.4.97.84/3110.4.97.84 – 10.4.97.8510.4.97.85
4410.4.97.86/3110.4.97.86 – 10.4.97.8710.4.97.87
4510.4.97.88/3110.4.97.88 – 10.4.97.8910.4.97.89
4610.4.97.90/3110.4.97.90 – 10.4.97.9110.4.97.91
4710.4.97.92/3110.4.97.92 – 10.4.97.9310.4.97.93
4810.4.97.94/3110.4.97.94 – 10.4.97.9510.4.97.95
4910.4.97.96/3110.4.97.96 – 10.4.97.9710.4.97.97
5010.4.97.98/3110.4.97.98 – 10.4.97.9910.4.97.99
5110.4.97.100/3110.4.97.100 – 10.4.97.10110.4.97.101
5210.4.97.102/3110.4.97.102 – 10.4.97.10310.4.97.103
5310.4.97.104/3110.4.97.104 – 10.4.97.10510.4.97.105
5410.4.97.106/3110.4.97.106 – 10.4.97.10710.4.97.107
5510.4.97.108/3110.4.97.108 – 10.4.97.10910.4.97.109
5610.4.97.110/3110.4.97.110 – 10.4.97.11110.4.97.111
5710.4.97.112/3110.4.97.112 – 10.4.97.11310.4.97.113
5810.4.97.114/3110.4.97.114 – 10.4.97.11510.4.97.115
5910.4.97.116/3110.4.97.116 – 10.4.97.11710.4.97.117
6010.4.97.118/3110.4.97.118 – 10.4.97.11910.4.97.119
6110.4.97.120/3110.4.97.120 – 10.4.97.12110.4.97.121
6210.4.97.122/3110.4.97.122 – 10.4.97.12310.4.97.123
6310.4.97.124/3110.4.97.124 – 10.4.97.12510.4.97.125
6410.4.97.126/3110.4.97.126 – 10.4.97.12710.4.97.127
6510.4.97.128/3110.4.97.128 – 10.4.97.12910.4.97.129
6610.4.97.130/3110.4.97.130 – 10.4.97.13110.4.97.131
6710.4.97.132/3110.4.97.132 – 10.4.97.13310.4.97.133
6810.4.97.134/3110.4.97.134 – 10.4.97.13510.4.97.135
6910.4.97.136/3110.4.97.136 – 10.4.97.13710.4.97.137
7010.4.97.138/3110.4.97.138 – 10.4.97.13910.4.97.139
7110.4.97.140/3110.4.97.140 – 10.4.97.14110.4.97.141
7210.4.97.142/3110.4.97.142 – 10.4.97.14310.4.97.143
7310.4.97.144/3110.4.97.144 – 10.4.97.14510.4.97.145
7410.4.97.146/3110.4.97.146 – 10.4.97.14710.4.97.147
7510.4.97.148/3110.4.97.148 – 10.4.97.14910.4.97.149
7610.4.97.150/3110.4.97.150 – 10.4.97.15110.4.97.151
7710.4.97.152/3110.4.97.152 – 10.4.97.15310.4.97.153
7810.4.97.154/3110.4.97.154 – 10.4.97.15510.4.97.155
7910.4.97.156/3110.4.97.156 – 10.4.97.15710.4.97.157
8010.4.97.158/3110.4.97.158 – 10.4.97.15910.4.97.159
8110.4.97.160/3110.4.97.160 – 10.4.97.16110.4.97.161
8210.4.97.162/3110.4.97.162 – 10.4.97.16310.4.97.163
8310.4.97.164/3110.4.97.164 – 10.4.97.16510.4.97.165
8410.4.97.166/3110.4.97.166 – 10.4.97.16710.4.97.167
8510.4.97.168/3110.4.97.168 – 10.4.97.16910.4.97.169
8610.4.97.170/3110.4.97.170 – 10.4.97.17110.4.97.171
8710.4.97.172/3110.4.97.172 – 10.4.97.17310.4.97.173
8810.4.97.174/3110.4.97.174 – 10.4.97.17510.4.97.175
8910.4.97.176/3110.4.97.176 – 10.4.97.17710.4.97.177
9010.4.97.178/3110.4.97.178 – 10.4.97.17910.4.97.179
9110.4.97.180/3110.4.97.180 – 10.4.97.18110.4.97.181
9210.4.97.182/3110.4.97.182 – 10.4.97.18310.4.97.183
9310.4.97.184/3110.4.97.184 – 10.4.97.18510.4.97.185
9410.4.97.186/3110.4.97.186 – 10.4.97.18710.4.97.187
9510.4.97.188/3110.4.97.188 – 10.4.97.18910.4.97.189
9610.4.97.190/3110.4.97.190 – 10.4.97.19110.4.97.191
9710.4.97.192/3110.4.97.192 – 10.4.97.19310.4.97.193
9810.4.97.194/3110.4.97.194 – 10.4.97.19510.4.97.195
9910.4.97.196/3110.4.97.196 – 10.4.97.19710.4.97.197
10010.4.97.198/3110.4.97.198 – 10.4.97.19910.4.97.199
10110.4.97.200/3110.4.97.200 – 10.4.97.20110.4.97.201
10210.4.97.202/3110.4.97.202 – 10.4.97.20310.4.97.203
10310.4.97.204/3110.4.97.204 – 10.4.97.20510.4.97.205
10410.4.97.206/3110.4.97.206 – 10.4.97.20710.4.97.207
10510.4.97.208/3110.4.97.208 – 10.4.97.20910.4.97.209
10610.4.97.210/3110.4.97.210 – 10.4.97.21110.4.97.211
10710.4.97.212/3110.4.97.212 – 10.4.97.21310.4.97.213
10810.4.97.214/3110.4.97.214 – 10.4.97.21510.4.97.215
10910.4.97.216/3110.4.97.216 – 10.4.97.21710.4.97.217
11010.4.97.218/3110.4.97.218 – 10.4.97.21910.4.97.219
11110.4.97.220/3110.4.97.220 – 10.4.97.22110.4.97.221
11210.4.97.222/3110.4.97.222 – 10.4.97.22310.4.97.223
11310.4.97.224/3110.4.97.224 – 10.4.97.22510.4.97.225
11410.4.97.226/3110.4.97.226 – 10.4.97.22710.4.97.227
11510.4.97.228/3110.4.97.228 – 10.4.97.22910.4.97.229
11610.4.97.230/3110.4.97.230 – 10.4.97.23110.4.97.231
11710.4.97.232/3110.4.97.232 – 10.4.97.23310.4.97.233
11810.4.97.234/3110.4.97.234 – 10.4.97.23510.4.97.235
11910.4.97.236/3110.4.97.236 – 10.4.97.23710.4.97.237
12010.4.97.238/3110.4.97.238 – 10.4.97.23910.4.97.239
12110.4.97.240/3110.4.97.240 – 10.4.97.24110.4.97.241
12210.4.97.242/3110.4.97.242 – 10.4.97.24310.4.97.243
12310.4.97.244/3110.4.97.244 – 10.4.97.24510.4.97.245
12410.4.97.246/3110.4.97.246 – 10.4.97.24710.4.97.247
12510.4.97.248/3110.4.97.248 – 10.4.97.24910.4.97.249
12610.4.97.250/3110.4.97.250 – 10.4.97.25110.4.97.251
12710.4.97.252/3110.4.97.252 – 10.4.97.25310.4.97.253
12810.4.97.254/3110.4.97.254 – 10.4.97.25510.4.97.255
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 →