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)10.2.222.0/24
network10.2.222.0/24
broadcast10.2.222.255
first host10.2.222.1
last host10.2.222.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.2.222.0/24
address00001010.00000010.11011110.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000010.11011110.00000000
broadcast00001010.00000010.11011110.11111111
green = network part, grey = host part
hex0x0a02de00
decimal167960064
reverse dns0.222.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:de00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.222.0/3110.2.222.0 – 10.2.222.110.2.222.1
210.2.222.2/3110.2.222.2 – 10.2.222.310.2.222.3
310.2.222.4/3110.2.222.4 – 10.2.222.510.2.222.5
410.2.222.6/3110.2.222.6 – 10.2.222.710.2.222.7
510.2.222.8/3110.2.222.8 – 10.2.222.910.2.222.9
610.2.222.10/3110.2.222.10 – 10.2.222.1110.2.222.11
710.2.222.12/3110.2.222.12 – 10.2.222.1310.2.222.13
810.2.222.14/3110.2.222.14 – 10.2.222.1510.2.222.15
910.2.222.16/3110.2.222.16 – 10.2.222.1710.2.222.17
1010.2.222.18/3110.2.222.18 – 10.2.222.1910.2.222.19
1110.2.222.20/3110.2.222.20 – 10.2.222.2110.2.222.21
1210.2.222.22/3110.2.222.22 – 10.2.222.2310.2.222.23
1310.2.222.24/3110.2.222.24 – 10.2.222.2510.2.222.25
1410.2.222.26/3110.2.222.26 – 10.2.222.2710.2.222.27
1510.2.222.28/3110.2.222.28 – 10.2.222.2910.2.222.29
1610.2.222.30/3110.2.222.30 – 10.2.222.3110.2.222.31
1710.2.222.32/3110.2.222.32 – 10.2.222.3310.2.222.33
1810.2.222.34/3110.2.222.34 – 10.2.222.3510.2.222.35
1910.2.222.36/3110.2.222.36 – 10.2.222.3710.2.222.37
2010.2.222.38/3110.2.222.38 – 10.2.222.3910.2.222.39
2110.2.222.40/3110.2.222.40 – 10.2.222.4110.2.222.41
2210.2.222.42/3110.2.222.42 – 10.2.222.4310.2.222.43
2310.2.222.44/3110.2.222.44 – 10.2.222.4510.2.222.45
2410.2.222.46/3110.2.222.46 – 10.2.222.4710.2.222.47
2510.2.222.48/3110.2.222.48 – 10.2.222.4910.2.222.49
2610.2.222.50/3110.2.222.50 – 10.2.222.5110.2.222.51
2710.2.222.52/3110.2.222.52 – 10.2.222.5310.2.222.53
2810.2.222.54/3110.2.222.54 – 10.2.222.5510.2.222.55
2910.2.222.56/3110.2.222.56 – 10.2.222.5710.2.222.57
3010.2.222.58/3110.2.222.58 – 10.2.222.5910.2.222.59
3110.2.222.60/3110.2.222.60 – 10.2.222.6110.2.222.61
3210.2.222.62/3110.2.222.62 – 10.2.222.6310.2.222.63
3310.2.222.64/3110.2.222.64 – 10.2.222.6510.2.222.65
3410.2.222.66/3110.2.222.66 – 10.2.222.6710.2.222.67
3510.2.222.68/3110.2.222.68 – 10.2.222.6910.2.222.69
3610.2.222.70/3110.2.222.70 – 10.2.222.7110.2.222.71
3710.2.222.72/3110.2.222.72 – 10.2.222.7310.2.222.73
3810.2.222.74/3110.2.222.74 – 10.2.222.7510.2.222.75
3910.2.222.76/3110.2.222.76 – 10.2.222.7710.2.222.77
4010.2.222.78/3110.2.222.78 – 10.2.222.7910.2.222.79
4110.2.222.80/3110.2.222.80 – 10.2.222.8110.2.222.81
4210.2.222.82/3110.2.222.82 – 10.2.222.8310.2.222.83
4310.2.222.84/3110.2.222.84 – 10.2.222.8510.2.222.85
4410.2.222.86/3110.2.222.86 – 10.2.222.8710.2.222.87
4510.2.222.88/3110.2.222.88 – 10.2.222.8910.2.222.89
4610.2.222.90/3110.2.222.90 – 10.2.222.9110.2.222.91
4710.2.222.92/3110.2.222.92 – 10.2.222.9310.2.222.93
4810.2.222.94/3110.2.222.94 – 10.2.222.9510.2.222.95
4910.2.222.96/3110.2.222.96 – 10.2.222.9710.2.222.97
5010.2.222.98/3110.2.222.98 – 10.2.222.9910.2.222.99
5110.2.222.100/3110.2.222.100 – 10.2.222.10110.2.222.101
5210.2.222.102/3110.2.222.102 – 10.2.222.10310.2.222.103
5310.2.222.104/3110.2.222.104 – 10.2.222.10510.2.222.105
5410.2.222.106/3110.2.222.106 – 10.2.222.10710.2.222.107
5510.2.222.108/3110.2.222.108 – 10.2.222.10910.2.222.109
5610.2.222.110/3110.2.222.110 – 10.2.222.11110.2.222.111
5710.2.222.112/3110.2.222.112 – 10.2.222.11310.2.222.113
5810.2.222.114/3110.2.222.114 – 10.2.222.11510.2.222.115
5910.2.222.116/3110.2.222.116 – 10.2.222.11710.2.222.117
6010.2.222.118/3110.2.222.118 – 10.2.222.11910.2.222.119
6110.2.222.120/3110.2.222.120 – 10.2.222.12110.2.222.121
6210.2.222.122/3110.2.222.122 – 10.2.222.12310.2.222.123
6310.2.222.124/3110.2.222.124 – 10.2.222.12510.2.222.125
6410.2.222.126/3110.2.222.126 – 10.2.222.12710.2.222.127
6510.2.222.128/3110.2.222.128 – 10.2.222.12910.2.222.129
6610.2.222.130/3110.2.222.130 – 10.2.222.13110.2.222.131
6710.2.222.132/3110.2.222.132 – 10.2.222.13310.2.222.133
6810.2.222.134/3110.2.222.134 – 10.2.222.13510.2.222.135
6910.2.222.136/3110.2.222.136 – 10.2.222.13710.2.222.137
7010.2.222.138/3110.2.222.138 – 10.2.222.13910.2.222.139
7110.2.222.140/3110.2.222.140 – 10.2.222.14110.2.222.141
7210.2.222.142/3110.2.222.142 – 10.2.222.14310.2.222.143
7310.2.222.144/3110.2.222.144 – 10.2.222.14510.2.222.145
7410.2.222.146/3110.2.222.146 – 10.2.222.14710.2.222.147
7510.2.222.148/3110.2.222.148 – 10.2.222.14910.2.222.149
7610.2.222.150/3110.2.222.150 – 10.2.222.15110.2.222.151
7710.2.222.152/3110.2.222.152 – 10.2.222.15310.2.222.153
7810.2.222.154/3110.2.222.154 – 10.2.222.15510.2.222.155
7910.2.222.156/3110.2.222.156 – 10.2.222.15710.2.222.157
8010.2.222.158/3110.2.222.158 – 10.2.222.15910.2.222.159
8110.2.222.160/3110.2.222.160 – 10.2.222.16110.2.222.161
8210.2.222.162/3110.2.222.162 – 10.2.222.16310.2.222.163
8310.2.222.164/3110.2.222.164 – 10.2.222.16510.2.222.165
8410.2.222.166/3110.2.222.166 – 10.2.222.16710.2.222.167
8510.2.222.168/3110.2.222.168 – 10.2.222.16910.2.222.169
8610.2.222.170/3110.2.222.170 – 10.2.222.17110.2.222.171
8710.2.222.172/3110.2.222.172 – 10.2.222.17310.2.222.173
8810.2.222.174/3110.2.222.174 – 10.2.222.17510.2.222.175
8910.2.222.176/3110.2.222.176 – 10.2.222.17710.2.222.177
9010.2.222.178/3110.2.222.178 – 10.2.222.17910.2.222.179
9110.2.222.180/3110.2.222.180 – 10.2.222.18110.2.222.181
9210.2.222.182/3110.2.222.182 – 10.2.222.18310.2.222.183
9310.2.222.184/3110.2.222.184 – 10.2.222.18510.2.222.185
9410.2.222.186/3110.2.222.186 – 10.2.222.18710.2.222.187
9510.2.222.188/3110.2.222.188 – 10.2.222.18910.2.222.189
9610.2.222.190/3110.2.222.190 – 10.2.222.19110.2.222.191
9710.2.222.192/3110.2.222.192 – 10.2.222.19310.2.222.193
9810.2.222.194/3110.2.222.194 – 10.2.222.19510.2.222.195
9910.2.222.196/3110.2.222.196 – 10.2.222.19710.2.222.197
10010.2.222.198/3110.2.222.198 – 10.2.222.19910.2.222.199
10110.2.222.200/3110.2.222.200 – 10.2.222.20110.2.222.201
10210.2.222.202/3110.2.222.202 – 10.2.222.20310.2.222.203
10310.2.222.204/3110.2.222.204 – 10.2.222.20510.2.222.205
10410.2.222.206/3110.2.222.206 – 10.2.222.20710.2.222.207
10510.2.222.208/3110.2.222.208 – 10.2.222.20910.2.222.209
10610.2.222.210/3110.2.222.210 – 10.2.222.21110.2.222.211
10710.2.222.212/3110.2.222.212 – 10.2.222.21310.2.222.213
10810.2.222.214/3110.2.222.214 – 10.2.222.21510.2.222.215
10910.2.222.216/3110.2.222.216 – 10.2.222.21710.2.222.217
11010.2.222.218/3110.2.222.218 – 10.2.222.21910.2.222.219
11110.2.222.220/3110.2.222.220 – 10.2.222.22110.2.222.221
11210.2.222.222/3110.2.222.222 – 10.2.222.22310.2.222.223
11310.2.222.224/3110.2.222.224 – 10.2.222.22510.2.222.225
11410.2.222.226/3110.2.222.226 – 10.2.222.22710.2.222.227
11510.2.222.228/3110.2.222.228 – 10.2.222.22910.2.222.229
11610.2.222.230/3110.2.222.230 – 10.2.222.23110.2.222.231
11710.2.222.232/3110.2.222.232 – 10.2.222.23310.2.222.233
11810.2.222.234/3110.2.222.234 – 10.2.222.23510.2.222.235
11910.2.222.236/3110.2.222.236 – 10.2.222.23710.2.222.237
12010.2.222.238/3110.2.222.238 – 10.2.222.23910.2.222.239
12110.2.222.240/3110.2.222.240 – 10.2.222.24110.2.222.241
12210.2.222.242/3110.2.222.242 – 10.2.222.24310.2.222.243
12310.2.222.244/3110.2.222.244 – 10.2.222.24510.2.222.245
12410.2.222.246/3110.2.222.246 – 10.2.222.24710.2.222.247
12510.2.222.248/3110.2.222.248 – 10.2.222.24910.2.222.249
12610.2.222.250/3110.2.222.250 – 10.2.222.25110.2.222.251
12710.2.222.252/3110.2.222.252 – 10.2.222.25310.2.222.253
12810.2.222.254/3110.2.222.254 – 10.2.222.25510.2.222.255
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 →