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)10.0.197.0/24
network10.0.197.0/24
broadcast10.0.197.255
first host10.0.197.1
last host10.0.197.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.0.197.0/24
address00001010.00000000.11000101.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000000.11000101.00000000
broadcast00001010.00000000.11000101.11111111
green = network part, grey = host part
hex0x0a00c500
decimal167822592
reverse dns0.197.0.10.in-addr.arpa
ipv4-mapped::ffff:a00:c500

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.0.197.0/3110.0.197.0 – 10.0.197.110.0.197.1
210.0.197.2/3110.0.197.2 – 10.0.197.310.0.197.3
310.0.197.4/3110.0.197.4 – 10.0.197.510.0.197.5
410.0.197.6/3110.0.197.6 – 10.0.197.710.0.197.7
510.0.197.8/3110.0.197.8 – 10.0.197.910.0.197.9
610.0.197.10/3110.0.197.10 – 10.0.197.1110.0.197.11
710.0.197.12/3110.0.197.12 – 10.0.197.1310.0.197.13
810.0.197.14/3110.0.197.14 – 10.0.197.1510.0.197.15
910.0.197.16/3110.0.197.16 – 10.0.197.1710.0.197.17
1010.0.197.18/3110.0.197.18 – 10.0.197.1910.0.197.19
1110.0.197.20/3110.0.197.20 – 10.0.197.2110.0.197.21
1210.0.197.22/3110.0.197.22 – 10.0.197.2310.0.197.23
1310.0.197.24/3110.0.197.24 – 10.0.197.2510.0.197.25
1410.0.197.26/3110.0.197.26 – 10.0.197.2710.0.197.27
1510.0.197.28/3110.0.197.28 – 10.0.197.2910.0.197.29
1610.0.197.30/3110.0.197.30 – 10.0.197.3110.0.197.31
1710.0.197.32/3110.0.197.32 – 10.0.197.3310.0.197.33
1810.0.197.34/3110.0.197.34 – 10.0.197.3510.0.197.35
1910.0.197.36/3110.0.197.36 – 10.0.197.3710.0.197.37
2010.0.197.38/3110.0.197.38 – 10.0.197.3910.0.197.39
2110.0.197.40/3110.0.197.40 – 10.0.197.4110.0.197.41
2210.0.197.42/3110.0.197.42 – 10.0.197.4310.0.197.43
2310.0.197.44/3110.0.197.44 – 10.0.197.4510.0.197.45
2410.0.197.46/3110.0.197.46 – 10.0.197.4710.0.197.47
2510.0.197.48/3110.0.197.48 – 10.0.197.4910.0.197.49
2610.0.197.50/3110.0.197.50 – 10.0.197.5110.0.197.51
2710.0.197.52/3110.0.197.52 – 10.0.197.5310.0.197.53
2810.0.197.54/3110.0.197.54 – 10.0.197.5510.0.197.55
2910.0.197.56/3110.0.197.56 – 10.0.197.5710.0.197.57
3010.0.197.58/3110.0.197.58 – 10.0.197.5910.0.197.59
3110.0.197.60/3110.0.197.60 – 10.0.197.6110.0.197.61
3210.0.197.62/3110.0.197.62 – 10.0.197.6310.0.197.63
3310.0.197.64/3110.0.197.64 – 10.0.197.6510.0.197.65
3410.0.197.66/3110.0.197.66 – 10.0.197.6710.0.197.67
3510.0.197.68/3110.0.197.68 – 10.0.197.6910.0.197.69
3610.0.197.70/3110.0.197.70 – 10.0.197.7110.0.197.71
3710.0.197.72/3110.0.197.72 – 10.0.197.7310.0.197.73
3810.0.197.74/3110.0.197.74 – 10.0.197.7510.0.197.75
3910.0.197.76/3110.0.197.76 – 10.0.197.7710.0.197.77
4010.0.197.78/3110.0.197.78 – 10.0.197.7910.0.197.79
4110.0.197.80/3110.0.197.80 – 10.0.197.8110.0.197.81
4210.0.197.82/3110.0.197.82 – 10.0.197.8310.0.197.83
4310.0.197.84/3110.0.197.84 – 10.0.197.8510.0.197.85
4410.0.197.86/3110.0.197.86 – 10.0.197.8710.0.197.87
4510.0.197.88/3110.0.197.88 – 10.0.197.8910.0.197.89
4610.0.197.90/3110.0.197.90 – 10.0.197.9110.0.197.91
4710.0.197.92/3110.0.197.92 – 10.0.197.9310.0.197.93
4810.0.197.94/3110.0.197.94 – 10.0.197.9510.0.197.95
4910.0.197.96/3110.0.197.96 – 10.0.197.9710.0.197.97
5010.0.197.98/3110.0.197.98 – 10.0.197.9910.0.197.99
5110.0.197.100/3110.0.197.100 – 10.0.197.10110.0.197.101
5210.0.197.102/3110.0.197.102 – 10.0.197.10310.0.197.103
5310.0.197.104/3110.0.197.104 – 10.0.197.10510.0.197.105
5410.0.197.106/3110.0.197.106 – 10.0.197.10710.0.197.107
5510.0.197.108/3110.0.197.108 – 10.0.197.10910.0.197.109
5610.0.197.110/3110.0.197.110 – 10.0.197.11110.0.197.111
5710.0.197.112/3110.0.197.112 – 10.0.197.11310.0.197.113
5810.0.197.114/3110.0.197.114 – 10.0.197.11510.0.197.115
5910.0.197.116/3110.0.197.116 – 10.0.197.11710.0.197.117
6010.0.197.118/3110.0.197.118 – 10.0.197.11910.0.197.119
6110.0.197.120/3110.0.197.120 – 10.0.197.12110.0.197.121
6210.0.197.122/3110.0.197.122 – 10.0.197.12310.0.197.123
6310.0.197.124/3110.0.197.124 – 10.0.197.12510.0.197.125
6410.0.197.126/3110.0.197.126 – 10.0.197.12710.0.197.127
6510.0.197.128/3110.0.197.128 – 10.0.197.12910.0.197.129
6610.0.197.130/3110.0.197.130 – 10.0.197.13110.0.197.131
6710.0.197.132/3110.0.197.132 – 10.0.197.13310.0.197.133
6810.0.197.134/3110.0.197.134 – 10.0.197.13510.0.197.135
6910.0.197.136/3110.0.197.136 – 10.0.197.13710.0.197.137
7010.0.197.138/3110.0.197.138 – 10.0.197.13910.0.197.139
7110.0.197.140/3110.0.197.140 – 10.0.197.14110.0.197.141
7210.0.197.142/3110.0.197.142 – 10.0.197.14310.0.197.143
7310.0.197.144/3110.0.197.144 – 10.0.197.14510.0.197.145
7410.0.197.146/3110.0.197.146 – 10.0.197.14710.0.197.147
7510.0.197.148/3110.0.197.148 – 10.0.197.14910.0.197.149
7610.0.197.150/3110.0.197.150 – 10.0.197.15110.0.197.151
7710.0.197.152/3110.0.197.152 – 10.0.197.15310.0.197.153
7810.0.197.154/3110.0.197.154 – 10.0.197.15510.0.197.155
7910.0.197.156/3110.0.197.156 – 10.0.197.15710.0.197.157
8010.0.197.158/3110.0.197.158 – 10.0.197.15910.0.197.159
8110.0.197.160/3110.0.197.160 – 10.0.197.16110.0.197.161
8210.0.197.162/3110.0.197.162 – 10.0.197.16310.0.197.163
8310.0.197.164/3110.0.197.164 – 10.0.197.16510.0.197.165
8410.0.197.166/3110.0.197.166 – 10.0.197.16710.0.197.167
8510.0.197.168/3110.0.197.168 – 10.0.197.16910.0.197.169
8610.0.197.170/3110.0.197.170 – 10.0.197.17110.0.197.171
8710.0.197.172/3110.0.197.172 – 10.0.197.17310.0.197.173
8810.0.197.174/3110.0.197.174 – 10.0.197.17510.0.197.175
8910.0.197.176/3110.0.197.176 – 10.0.197.17710.0.197.177
9010.0.197.178/3110.0.197.178 – 10.0.197.17910.0.197.179
9110.0.197.180/3110.0.197.180 – 10.0.197.18110.0.197.181
9210.0.197.182/3110.0.197.182 – 10.0.197.18310.0.197.183
9310.0.197.184/3110.0.197.184 – 10.0.197.18510.0.197.185
9410.0.197.186/3110.0.197.186 – 10.0.197.18710.0.197.187
9510.0.197.188/3110.0.197.188 – 10.0.197.18910.0.197.189
9610.0.197.190/3110.0.197.190 – 10.0.197.19110.0.197.191
9710.0.197.192/3110.0.197.192 – 10.0.197.19310.0.197.193
9810.0.197.194/3110.0.197.194 – 10.0.197.19510.0.197.195
9910.0.197.196/3110.0.197.196 – 10.0.197.19710.0.197.197
10010.0.197.198/3110.0.197.198 – 10.0.197.19910.0.197.199
10110.0.197.200/3110.0.197.200 – 10.0.197.20110.0.197.201
10210.0.197.202/3110.0.197.202 – 10.0.197.20310.0.197.203
10310.0.197.204/3110.0.197.204 – 10.0.197.20510.0.197.205
10410.0.197.206/3110.0.197.206 – 10.0.197.20710.0.197.207
10510.0.197.208/3110.0.197.208 – 10.0.197.20910.0.197.209
10610.0.197.210/3110.0.197.210 – 10.0.197.21110.0.197.211
10710.0.197.212/3110.0.197.212 – 10.0.197.21310.0.197.213
10810.0.197.214/3110.0.197.214 – 10.0.197.21510.0.197.215
10910.0.197.216/3110.0.197.216 – 10.0.197.21710.0.197.217
11010.0.197.218/3110.0.197.218 – 10.0.197.21910.0.197.219
11110.0.197.220/3110.0.197.220 – 10.0.197.22110.0.197.221
11210.0.197.222/3110.0.197.222 – 10.0.197.22310.0.197.223
11310.0.197.224/3110.0.197.224 – 10.0.197.22510.0.197.225
11410.0.197.226/3110.0.197.226 – 10.0.197.22710.0.197.227
11510.0.197.228/3110.0.197.228 – 10.0.197.22910.0.197.229
11610.0.197.230/3110.0.197.230 – 10.0.197.23110.0.197.231
11710.0.197.232/3110.0.197.232 – 10.0.197.23310.0.197.233
11810.0.197.234/3110.0.197.234 – 10.0.197.23510.0.197.235
11910.0.197.236/3110.0.197.236 – 10.0.197.23710.0.197.237
12010.0.197.238/3110.0.197.238 – 10.0.197.23910.0.197.239
12110.0.197.240/3110.0.197.240 – 10.0.197.24110.0.197.241
12210.0.197.242/3110.0.197.242 – 10.0.197.24310.0.197.243
12310.0.197.244/3110.0.197.244 – 10.0.197.24510.0.197.245
12410.0.197.246/3110.0.197.246 – 10.0.197.24710.0.197.247
12510.0.197.248/3110.0.197.248 – 10.0.197.24910.0.197.249
12610.0.197.250/3110.0.197.250 – 10.0.197.25110.0.197.251
12710.0.197.252/3110.0.197.252 – 10.0.197.25310.0.197.253
12810.0.197.254/3110.0.197.254 – 10.0.197.25510.0.197.255
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 →