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)10.78.77.0/24
network10.78.77.0/24
broadcast10.78.77.255
first host10.78.77.1
last host10.78.77.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.78.77.0/24
address00001010.01001110.01001101.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.01001110.01001101.00000000
broadcast00001010.01001110.01001101.11111111
green = network part, grey = host part
hex0x0a4e4d00
decimal172903680
reverse dns0.77.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:4d00

/24 split into /31 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.77.0/3110.78.77.0 – 10.78.77.110.78.77.1
210.78.77.2/3110.78.77.2 – 10.78.77.310.78.77.3
310.78.77.4/3110.78.77.4 – 10.78.77.510.78.77.5
410.78.77.6/3110.78.77.6 – 10.78.77.710.78.77.7
510.78.77.8/3110.78.77.8 – 10.78.77.910.78.77.9
610.78.77.10/3110.78.77.10 – 10.78.77.1110.78.77.11
710.78.77.12/3110.78.77.12 – 10.78.77.1310.78.77.13
810.78.77.14/3110.78.77.14 – 10.78.77.1510.78.77.15
910.78.77.16/3110.78.77.16 – 10.78.77.1710.78.77.17
1010.78.77.18/3110.78.77.18 – 10.78.77.1910.78.77.19
1110.78.77.20/3110.78.77.20 – 10.78.77.2110.78.77.21
1210.78.77.22/3110.78.77.22 – 10.78.77.2310.78.77.23
1310.78.77.24/3110.78.77.24 – 10.78.77.2510.78.77.25
1410.78.77.26/3110.78.77.26 – 10.78.77.2710.78.77.27
1510.78.77.28/3110.78.77.28 – 10.78.77.2910.78.77.29
1610.78.77.30/3110.78.77.30 – 10.78.77.3110.78.77.31
1710.78.77.32/3110.78.77.32 – 10.78.77.3310.78.77.33
1810.78.77.34/3110.78.77.34 – 10.78.77.3510.78.77.35
1910.78.77.36/3110.78.77.36 – 10.78.77.3710.78.77.37
2010.78.77.38/3110.78.77.38 – 10.78.77.3910.78.77.39
2110.78.77.40/3110.78.77.40 – 10.78.77.4110.78.77.41
2210.78.77.42/3110.78.77.42 – 10.78.77.4310.78.77.43
2310.78.77.44/3110.78.77.44 – 10.78.77.4510.78.77.45
2410.78.77.46/3110.78.77.46 – 10.78.77.4710.78.77.47
2510.78.77.48/3110.78.77.48 – 10.78.77.4910.78.77.49
2610.78.77.50/3110.78.77.50 – 10.78.77.5110.78.77.51
2710.78.77.52/3110.78.77.52 – 10.78.77.5310.78.77.53
2810.78.77.54/3110.78.77.54 – 10.78.77.5510.78.77.55
2910.78.77.56/3110.78.77.56 – 10.78.77.5710.78.77.57
3010.78.77.58/3110.78.77.58 – 10.78.77.5910.78.77.59
3110.78.77.60/3110.78.77.60 – 10.78.77.6110.78.77.61
3210.78.77.62/3110.78.77.62 – 10.78.77.6310.78.77.63
3310.78.77.64/3110.78.77.64 – 10.78.77.6510.78.77.65
3410.78.77.66/3110.78.77.66 – 10.78.77.6710.78.77.67
3510.78.77.68/3110.78.77.68 – 10.78.77.6910.78.77.69
3610.78.77.70/3110.78.77.70 – 10.78.77.7110.78.77.71
3710.78.77.72/3110.78.77.72 – 10.78.77.7310.78.77.73
3810.78.77.74/3110.78.77.74 – 10.78.77.7510.78.77.75
3910.78.77.76/3110.78.77.76 – 10.78.77.7710.78.77.77
4010.78.77.78/3110.78.77.78 – 10.78.77.7910.78.77.79
4110.78.77.80/3110.78.77.80 – 10.78.77.8110.78.77.81
4210.78.77.82/3110.78.77.82 – 10.78.77.8310.78.77.83
4310.78.77.84/3110.78.77.84 – 10.78.77.8510.78.77.85
4410.78.77.86/3110.78.77.86 – 10.78.77.8710.78.77.87
4510.78.77.88/3110.78.77.88 – 10.78.77.8910.78.77.89
4610.78.77.90/3110.78.77.90 – 10.78.77.9110.78.77.91
4710.78.77.92/3110.78.77.92 – 10.78.77.9310.78.77.93
4810.78.77.94/3110.78.77.94 – 10.78.77.9510.78.77.95
4910.78.77.96/3110.78.77.96 – 10.78.77.9710.78.77.97
5010.78.77.98/3110.78.77.98 – 10.78.77.9910.78.77.99
5110.78.77.100/3110.78.77.100 – 10.78.77.10110.78.77.101
5210.78.77.102/3110.78.77.102 – 10.78.77.10310.78.77.103
5310.78.77.104/3110.78.77.104 – 10.78.77.10510.78.77.105
5410.78.77.106/3110.78.77.106 – 10.78.77.10710.78.77.107
5510.78.77.108/3110.78.77.108 – 10.78.77.10910.78.77.109
5610.78.77.110/3110.78.77.110 – 10.78.77.11110.78.77.111
5710.78.77.112/3110.78.77.112 – 10.78.77.11310.78.77.113
5810.78.77.114/3110.78.77.114 – 10.78.77.11510.78.77.115
5910.78.77.116/3110.78.77.116 – 10.78.77.11710.78.77.117
6010.78.77.118/3110.78.77.118 – 10.78.77.11910.78.77.119
6110.78.77.120/3110.78.77.120 – 10.78.77.12110.78.77.121
6210.78.77.122/3110.78.77.122 – 10.78.77.12310.78.77.123
6310.78.77.124/3110.78.77.124 – 10.78.77.12510.78.77.125
6410.78.77.126/3110.78.77.126 – 10.78.77.12710.78.77.127
6510.78.77.128/3110.78.77.128 – 10.78.77.12910.78.77.129
6610.78.77.130/3110.78.77.130 – 10.78.77.13110.78.77.131
6710.78.77.132/3110.78.77.132 – 10.78.77.13310.78.77.133
6810.78.77.134/3110.78.77.134 – 10.78.77.13510.78.77.135
6910.78.77.136/3110.78.77.136 – 10.78.77.13710.78.77.137
7010.78.77.138/3110.78.77.138 – 10.78.77.13910.78.77.139
7110.78.77.140/3110.78.77.140 – 10.78.77.14110.78.77.141
7210.78.77.142/3110.78.77.142 – 10.78.77.14310.78.77.143
7310.78.77.144/3110.78.77.144 – 10.78.77.14510.78.77.145
7410.78.77.146/3110.78.77.146 – 10.78.77.14710.78.77.147
7510.78.77.148/3110.78.77.148 – 10.78.77.14910.78.77.149
7610.78.77.150/3110.78.77.150 – 10.78.77.15110.78.77.151
7710.78.77.152/3110.78.77.152 – 10.78.77.15310.78.77.153
7810.78.77.154/3110.78.77.154 – 10.78.77.15510.78.77.155
7910.78.77.156/3110.78.77.156 – 10.78.77.15710.78.77.157
8010.78.77.158/3110.78.77.158 – 10.78.77.15910.78.77.159
8110.78.77.160/3110.78.77.160 – 10.78.77.16110.78.77.161
8210.78.77.162/3110.78.77.162 – 10.78.77.16310.78.77.163
8310.78.77.164/3110.78.77.164 – 10.78.77.16510.78.77.165
8410.78.77.166/3110.78.77.166 – 10.78.77.16710.78.77.167
8510.78.77.168/3110.78.77.168 – 10.78.77.16910.78.77.169
8610.78.77.170/3110.78.77.170 – 10.78.77.17110.78.77.171
8710.78.77.172/3110.78.77.172 – 10.78.77.17310.78.77.173
8810.78.77.174/3110.78.77.174 – 10.78.77.17510.78.77.175
8910.78.77.176/3110.78.77.176 – 10.78.77.17710.78.77.177
9010.78.77.178/3110.78.77.178 – 10.78.77.17910.78.77.179
9110.78.77.180/3110.78.77.180 – 10.78.77.18110.78.77.181
9210.78.77.182/3110.78.77.182 – 10.78.77.18310.78.77.183
9310.78.77.184/3110.78.77.184 – 10.78.77.18510.78.77.185
9410.78.77.186/3110.78.77.186 – 10.78.77.18710.78.77.187
9510.78.77.188/3110.78.77.188 – 10.78.77.18910.78.77.189
9610.78.77.190/3110.78.77.190 – 10.78.77.19110.78.77.191
9710.78.77.192/3110.78.77.192 – 10.78.77.19310.78.77.193
9810.78.77.194/3110.78.77.194 – 10.78.77.19510.78.77.195
9910.78.77.196/3110.78.77.196 – 10.78.77.19710.78.77.197
10010.78.77.198/3110.78.77.198 – 10.78.77.19910.78.77.199
10110.78.77.200/3110.78.77.200 – 10.78.77.20110.78.77.201
10210.78.77.202/3110.78.77.202 – 10.78.77.20310.78.77.203
10310.78.77.204/3110.78.77.204 – 10.78.77.20510.78.77.205
10410.78.77.206/3110.78.77.206 – 10.78.77.20710.78.77.207
10510.78.77.208/3110.78.77.208 – 10.78.77.20910.78.77.209
10610.78.77.210/3110.78.77.210 – 10.78.77.21110.78.77.211
10710.78.77.212/3110.78.77.212 – 10.78.77.21310.78.77.213
10810.78.77.214/3110.78.77.214 – 10.78.77.21510.78.77.215
10910.78.77.216/3110.78.77.216 – 10.78.77.21710.78.77.217
11010.78.77.218/3110.78.77.218 – 10.78.77.21910.78.77.219
11110.78.77.220/3110.78.77.220 – 10.78.77.22110.78.77.221
11210.78.77.222/3110.78.77.222 – 10.78.77.22310.78.77.223
11310.78.77.224/3110.78.77.224 – 10.78.77.22510.78.77.225
11410.78.77.226/3110.78.77.226 – 10.78.77.22710.78.77.227
11510.78.77.228/3110.78.77.228 – 10.78.77.22910.78.77.229
11610.78.77.230/3110.78.77.230 – 10.78.77.23110.78.77.231
11710.78.77.232/3110.78.77.232 – 10.78.77.23310.78.77.233
11810.78.77.234/3110.78.77.234 – 10.78.77.23510.78.77.235
11910.78.77.236/3110.78.77.236 – 10.78.77.23710.78.77.237
12010.78.77.238/3110.78.77.238 – 10.78.77.23910.78.77.239
12110.78.77.240/3110.78.77.240 – 10.78.77.24110.78.77.241
12210.78.77.242/3110.78.77.242 – 10.78.77.24310.78.77.243
12310.78.77.244/3110.78.77.244 – 10.78.77.24510.78.77.245
12410.78.77.246/3110.78.77.246 – 10.78.77.24710.78.77.247
12510.78.77.248/3110.78.77.248 – 10.78.77.24910.78.77.249
12610.78.77.250/3110.78.77.250 – 10.78.77.25110.78.77.251
12710.78.77.252/3110.78.77.252 – 10.78.77.25310.78.77.253
12810.78.77.254/3110.78.77.254 – 10.78.77.25510.78.77.255
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 →