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)10.167.235.0/24
network10.167.235.0/24
broadcast10.167.235.255
first host10.167.235.1
last host10.167.235.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.167.235.0/24
address00001010.10100111.11101011.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.10100111.11101011.00000000
broadcast00001010.10100111.11101011.11111111
green = network part, grey = host part
hex0x0aa7eb00
decimal178776832
reverse dns0.235.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:eb00

/24 split into /30 · 64 subnets

close ×
#networkhost rangebroadcast
110.167.235.0/3010.167.235.1 – 10.167.235.210.167.235.3
210.167.235.4/3010.167.235.5 – 10.167.235.610.167.235.7
310.167.235.8/3010.167.235.9 – 10.167.235.1010.167.235.11
410.167.235.12/3010.167.235.13 – 10.167.235.1410.167.235.15
510.167.235.16/3010.167.235.17 – 10.167.235.1810.167.235.19
610.167.235.20/3010.167.235.21 – 10.167.235.2210.167.235.23
710.167.235.24/3010.167.235.25 – 10.167.235.2610.167.235.27
810.167.235.28/3010.167.235.29 – 10.167.235.3010.167.235.31
910.167.235.32/3010.167.235.33 – 10.167.235.3410.167.235.35
1010.167.235.36/3010.167.235.37 – 10.167.235.3810.167.235.39
1110.167.235.40/3010.167.235.41 – 10.167.235.4210.167.235.43
1210.167.235.44/3010.167.235.45 – 10.167.235.4610.167.235.47
1310.167.235.48/3010.167.235.49 – 10.167.235.5010.167.235.51
1410.167.235.52/3010.167.235.53 – 10.167.235.5410.167.235.55
1510.167.235.56/3010.167.235.57 – 10.167.235.5810.167.235.59
1610.167.235.60/3010.167.235.61 – 10.167.235.6210.167.235.63
1710.167.235.64/3010.167.235.65 – 10.167.235.6610.167.235.67
1810.167.235.68/3010.167.235.69 – 10.167.235.7010.167.235.71
1910.167.235.72/3010.167.235.73 – 10.167.235.7410.167.235.75
2010.167.235.76/3010.167.235.77 – 10.167.235.7810.167.235.79
2110.167.235.80/3010.167.235.81 – 10.167.235.8210.167.235.83
2210.167.235.84/3010.167.235.85 – 10.167.235.8610.167.235.87
2310.167.235.88/3010.167.235.89 – 10.167.235.9010.167.235.91
2410.167.235.92/3010.167.235.93 – 10.167.235.9410.167.235.95
2510.167.235.96/3010.167.235.97 – 10.167.235.9810.167.235.99
2610.167.235.100/3010.167.235.101 – 10.167.235.10210.167.235.103
2710.167.235.104/3010.167.235.105 – 10.167.235.10610.167.235.107
2810.167.235.108/3010.167.235.109 – 10.167.235.11010.167.235.111
2910.167.235.112/3010.167.235.113 – 10.167.235.11410.167.235.115
3010.167.235.116/3010.167.235.117 – 10.167.235.11810.167.235.119
3110.167.235.120/3010.167.235.121 – 10.167.235.12210.167.235.123
3210.167.235.124/3010.167.235.125 – 10.167.235.12610.167.235.127
3310.167.235.128/3010.167.235.129 – 10.167.235.13010.167.235.131
3410.167.235.132/3010.167.235.133 – 10.167.235.13410.167.235.135
3510.167.235.136/3010.167.235.137 – 10.167.235.13810.167.235.139
3610.167.235.140/3010.167.235.141 – 10.167.235.14210.167.235.143
3710.167.235.144/3010.167.235.145 – 10.167.235.14610.167.235.147
3810.167.235.148/3010.167.235.149 – 10.167.235.15010.167.235.151
3910.167.235.152/3010.167.235.153 – 10.167.235.15410.167.235.155
4010.167.235.156/3010.167.235.157 – 10.167.235.15810.167.235.159
4110.167.235.160/3010.167.235.161 – 10.167.235.16210.167.235.163
4210.167.235.164/3010.167.235.165 – 10.167.235.16610.167.235.167
4310.167.235.168/3010.167.235.169 – 10.167.235.17010.167.235.171
4410.167.235.172/3010.167.235.173 – 10.167.235.17410.167.235.175
4510.167.235.176/3010.167.235.177 – 10.167.235.17810.167.235.179
4610.167.235.180/3010.167.235.181 – 10.167.235.18210.167.235.183
4710.167.235.184/3010.167.235.185 – 10.167.235.18610.167.235.187
4810.167.235.188/3010.167.235.189 – 10.167.235.19010.167.235.191
4910.167.235.192/3010.167.235.193 – 10.167.235.19410.167.235.195
5010.167.235.196/3010.167.235.197 – 10.167.235.19810.167.235.199
5110.167.235.200/3010.167.235.201 – 10.167.235.20210.167.235.203
5210.167.235.204/3010.167.235.205 – 10.167.235.20610.167.235.207
5310.167.235.208/3010.167.235.209 – 10.167.235.21010.167.235.211
5410.167.235.212/3010.167.235.213 – 10.167.235.21410.167.235.215
5510.167.235.216/3010.167.235.217 – 10.167.235.21810.167.235.219
5610.167.235.220/3010.167.235.221 – 10.167.235.22210.167.235.223
5710.167.235.224/3010.167.235.225 – 10.167.235.22610.167.235.227
5810.167.235.228/3010.167.235.229 – 10.167.235.23010.167.235.231
5910.167.235.232/3010.167.235.233 – 10.167.235.23410.167.235.235
6010.167.235.236/3010.167.235.237 – 10.167.235.23810.167.235.239
6110.167.235.240/3010.167.235.241 – 10.167.235.24210.167.235.243
6210.167.235.244/3010.167.235.245 – 10.167.235.24610.167.235.247
6310.167.235.248/3010.167.235.249 – 10.167.235.25010.167.235.251
6410.167.235.252/3010.167.235.253 – 10.167.235.25410.167.235.255
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 →