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)10.2.54.0/24
network10.2.54.0/24
broadcast10.2.54.255
first host10.2.54.1
last host10.2.54.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.2.54.0/24
address00001010.00000010.00110110.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00000010.00110110.00000000
broadcast00001010.00000010.00110110.11111111
green = network part, grey = host part
hex0x0a023600
decimal167917056
reverse dns0.54.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:3600

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.54.0/3110.2.54.0 – 10.2.54.110.2.54.1
210.2.54.2/3110.2.54.2 – 10.2.54.310.2.54.3
310.2.54.4/3110.2.54.4 – 10.2.54.510.2.54.5
410.2.54.6/3110.2.54.6 – 10.2.54.710.2.54.7
510.2.54.8/3110.2.54.8 – 10.2.54.910.2.54.9
610.2.54.10/3110.2.54.10 – 10.2.54.1110.2.54.11
710.2.54.12/3110.2.54.12 – 10.2.54.1310.2.54.13
810.2.54.14/3110.2.54.14 – 10.2.54.1510.2.54.15
910.2.54.16/3110.2.54.16 – 10.2.54.1710.2.54.17
1010.2.54.18/3110.2.54.18 – 10.2.54.1910.2.54.19
1110.2.54.20/3110.2.54.20 – 10.2.54.2110.2.54.21
1210.2.54.22/3110.2.54.22 – 10.2.54.2310.2.54.23
1310.2.54.24/3110.2.54.24 – 10.2.54.2510.2.54.25
1410.2.54.26/3110.2.54.26 – 10.2.54.2710.2.54.27
1510.2.54.28/3110.2.54.28 – 10.2.54.2910.2.54.29
1610.2.54.30/3110.2.54.30 – 10.2.54.3110.2.54.31
1710.2.54.32/3110.2.54.32 – 10.2.54.3310.2.54.33
1810.2.54.34/3110.2.54.34 – 10.2.54.3510.2.54.35
1910.2.54.36/3110.2.54.36 – 10.2.54.3710.2.54.37
2010.2.54.38/3110.2.54.38 – 10.2.54.3910.2.54.39
2110.2.54.40/3110.2.54.40 – 10.2.54.4110.2.54.41
2210.2.54.42/3110.2.54.42 – 10.2.54.4310.2.54.43
2310.2.54.44/3110.2.54.44 – 10.2.54.4510.2.54.45
2410.2.54.46/3110.2.54.46 – 10.2.54.4710.2.54.47
2510.2.54.48/3110.2.54.48 – 10.2.54.4910.2.54.49
2610.2.54.50/3110.2.54.50 – 10.2.54.5110.2.54.51
2710.2.54.52/3110.2.54.52 – 10.2.54.5310.2.54.53
2810.2.54.54/3110.2.54.54 – 10.2.54.5510.2.54.55
2910.2.54.56/3110.2.54.56 – 10.2.54.5710.2.54.57
3010.2.54.58/3110.2.54.58 – 10.2.54.5910.2.54.59
3110.2.54.60/3110.2.54.60 – 10.2.54.6110.2.54.61
3210.2.54.62/3110.2.54.62 – 10.2.54.6310.2.54.63
3310.2.54.64/3110.2.54.64 – 10.2.54.6510.2.54.65
3410.2.54.66/3110.2.54.66 – 10.2.54.6710.2.54.67
3510.2.54.68/3110.2.54.68 – 10.2.54.6910.2.54.69
3610.2.54.70/3110.2.54.70 – 10.2.54.7110.2.54.71
3710.2.54.72/3110.2.54.72 – 10.2.54.7310.2.54.73
3810.2.54.74/3110.2.54.74 – 10.2.54.7510.2.54.75
3910.2.54.76/3110.2.54.76 – 10.2.54.7710.2.54.77
4010.2.54.78/3110.2.54.78 – 10.2.54.7910.2.54.79
4110.2.54.80/3110.2.54.80 – 10.2.54.8110.2.54.81
4210.2.54.82/3110.2.54.82 – 10.2.54.8310.2.54.83
4310.2.54.84/3110.2.54.84 – 10.2.54.8510.2.54.85
4410.2.54.86/3110.2.54.86 – 10.2.54.8710.2.54.87
4510.2.54.88/3110.2.54.88 – 10.2.54.8910.2.54.89
4610.2.54.90/3110.2.54.90 – 10.2.54.9110.2.54.91
4710.2.54.92/3110.2.54.92 – 10.2.54.9310.2.54.93
4810.2.54.94/3110.2.54.94 – 10.2.54.9510.2.54.95
4910.2.54.96/3110.2.54.96 – 10.2.54.9710.2.54.97
5010.2.54.98/3110.2.54.98 – 10.2.54.9910.2.54.99
5110.2.54.100/3110.2.54.100 – 10.2.54.10110.2.54.101
5210.2.54.102/3110.2.54.102 – 10.2.54.10310.2.54.103
5310.2.54.104/3110.2.54.104 – 10.2.54.10510.2.54.105
5410.2.54.106/3110.2.54.106 – 10.2.54.10710.2.54.107
5510.2.54.108/3110.2.54.108 – 10.2.54.10910.2.54.109
5610.2.54.110/3110.2.54.110 – 10.2.54.11110.2.54.111
5710.2.54.112/3110.2.54.112 – 10.2.54.11310.2.54.113
5810.2.54.114/3110.2.54.114 – 10.2.54.11510.2.54.115
5910.2.54.116/3110.2.54.116 – 10.2.54.11710.2.54.117
6010.2.54.118/3110.2.54.118 – 10.2.54.11910.2.54.119
6110.2.54.120/3110.2.54.120 – 10.2.54.12110.2.54.121
6210.2.54.122/3110.2.54.122 – 10.2.54.12310.2.54.123
6310.2.54.124/3110.2.54.124 – 10.2.54.12510.2.54.125
6410.2.54.126/3110.2.54.126 – 10.2.54.12710.2.54.127
6510.2.54.128/3110.2.54.128 – 10.2.54.12910.2.54.129
6610.2.54.130/3110.2.54.130 – 10.2.54.13110.2.54.131
6710.2.54.132/3110.2.54.132 – 10.2.54.13310.2.54.133
6810.2.54.134/3110.2.54.134 – 10.2.54.13510.2.54.135
6910.2.54.136/3110.2.54.136 – 10.2.54.13710.2.54.137
7010.2.54.138/3110.2.54.138 – 10.2.54.13910.2.54.139
7110.2.54.140/3110.2.54.140 – 10.2.54.14110.2.54.141
7210.2.54.142/3110.2.54.142 – 10.2.54.14310.2.54.143
7310.2.54.144/3110.2.54.144 – 10.2.54.14510.2.54.145
7410.2.54.146/3110.2.54.146 – 10.2.54.14710.2.54.147
7510.2.54.148/3110.2.54.148 – 10.2.54.14910.2.54.149
7610.2.54.150/3110.2.54.150 – 10.2.54.15110.2.54.151
7710.2.54.152/3110.2.54.152 – 10.2.54.15310.2.54.153
7810.2.54.154/3110.2.54.154 – 10.2.54.15510.2.54.155
7910.2.54.156/3110.2.54.156 – 10.2.54.15710.2.54.157
8010.2.54.158/3110.2.54.158 – 10.2.54.15910.2.54.159
8110.2.54.160/3110.2.54.160 – 10.2.54.16110.2.54.161
8210.2.54.162/3110.2.54.162 – 10.2.54.16310.2.54.163
8310.2.54.164/3110.2.54.164 – 10.2.54.16510.2.54.165
8410.2.54.166/3110.2.54.166 – 10.2.54.16710.2.54.167
8510.2.54.168/3110.2.54.168 – 10.2.54.16910.2.54.169
8610.2.54.170/3110.2.54.170 – 10.2.54.17110.2.54.171
8710.2.54.172/3110.2.54.172 – 10.2.54.17310.2.54.173
8810.2.54.174/3110.2.54.174 – 10.2.54.17510.2.54.175
8910.2.54.176/3110.2.54.176 – 10.2.54.17710.2.54.177
9010.2.54.178/3110.2.54.178 – 10.2.54.17910.2.54.179
9110.2.54.180/3110.2.54.180 – 10.2.54.18110.2.54.181
9210.2.54.182/3110.2.54.182 – 10.2.54.18310.2.54.183
9310.2.54.184/3110.2.54.184 – 10.2.54.18510.2.54.185
9410.2.54.186/3110.2.54.186 – 10.2.54.18710.2.54.187
9510.2.54.188/3110.2.54.188 – 10.2.54.18910.2.54.189
9610.2.54.190/3110.2.54.190 – 10.2.54.19110.2.54.191
9710.2.54.192/3110.2.54.192 – 10.2.54.19310.2.54.193
9810.2.54.194/3110.2.54.194 – 10.2.54.19510.2.54.195
9910.2.54.196/3110.2.54.196 – 10.2.54.19710.2.54.197
10010.2.54.198/3110.2.54.198 – 10.2.54.19910.2.54.199
10110.2.54.200/3110.2.54.200 – 10.2.54.20110.2.54.201
10210.2.54.202/3110.2.54.202 – 10.2.54.20310.2.54.203
10310.2.54.204/3110.2.54.204 – 10.2.54.20510.2.54.205
10410.2.54.206/3110.2.54.206 – 10.2.54.20710.2.54.207
10510.2.54.208/3110.2.54.208 – 10.2.54.20910.2.54.209
10610.2.54.210/3110.2.54.210 – 10.2.54.21110.2.54.211
10710.2.54.212/3110.2.54.212 – 10.2.54.21310.2.54.213
10810.2.54.214/3110.2.54.214 – 10.2.54.21510.2.54.215
10910.2.54.216/3110.2.54.216 – 10.2.54.21710.2.54.217
11010.2.54.218/3110.2.54.218 – 10.2.54.21910.2.54.219
11110.2.54.220/3110.2.54.220 – 10.2.54.22110.2.54.221
11210.2.54.222/3110.2.54.222 – 10.2.54.22310.2.54.223
11310.2.54.224/3110.2.54.224 – 10.2.54.22510.2.54.225
11410.2.54.226/3110.2.54.226 – 10.2.54.22710.2.54.227
11510.2.54.228/3110.2.54.228 – 10.2.54.22910.2.54.229
11610.2.54.230/3110.2.54.230 – 10.2.54.23110.2.54.231
11710.2.54.232/3110.2.54.232 – 10.2.54.23310.2.54.233
11810.2.54.234/3110.2.54.234 – 10.2.54.23510.2.54.235
11910.2.54.236/3110.2.54.236 – 10.2.54.23710.2.54.237
12010.2.54.238/3110.2.54.238 – 10.2.54.23910.2.54.239
12110.2.54.240/3110.2.54.240 – 10.2.54.24110.2.54.241
12210.2.54.242/3110.2.54.242 – 10.2.54.24310.2.54.243
12310.2.54.244/3110.2.54.244 – 10.2.54.24510.2.54.245
12410.2.54.246/3110.2.54.246 – 10.2.54.24710.2.54.247
12510.2.54.248/3110.2.54.248 – 10.2.54.24910.2.54.249
12610.2.54.250/3110.2.54.250 – 10.2.54.25110.2.54.251
12710.2.54.252/3110.2.54.252 – 10.2.54.25310.2.54.253
12810.2.54.254/3110.2.54.254 – 10.2.54.25510.2.54.255
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 →