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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)10.44.84.0/24
network10.44.84.0/24
broadcast10.44.84.255
first host10.44.84.1
last host10.44.84.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.44.84.0/24
address00001010.00101100.01010100.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00101100.01010100.00000000
broadcast00001010.00101100.01010100.11111111
green = network part, grey = host part
hex0x0a2c5400
decimal170677248
reverse dns0.84.44.10.in-addr.arpa
ipv4-mapped::ffff:a2c:5400

/24 split into /30 · 64 subnets

close ×
#networkhost rangebroadcast
110.44.84.0/3010.44.84.1 – 10.44.84.210.44.84.3
210.44.84.4/3010.44.84.5 – 10.44.84.610.44.84.7
310.44.84.8/3010.44.84.9 – 10.44.84.1010.44.84.11
410.44.84.12/3010.44.84.13 – 10.44.84.1410.44.84.15
510.44.84.16/3010.44.84.17 – 10.44.84.1810.44.84.19
610.44.84.20/3010.44.84.21 – 10.44.84.2210.44.84.23
710.44.84.24/3010.44.84.25 – 10.44.84.2610.44.84.27
810.44.84.28/3010.44.84.29 – 10.44.84.3010.44.84.31
910.44.84.32/3010.44.84.33 – 10.44.84.3410.44.84.35
1010.44.84.36/3010.44.84.37 – 10.44.84.3810.44.84.39
1110.44.84.40/3010.44.84.41 – 10.44.84.4210.44.84.43
1210.44.84.44/3010.44.84.45 – 10.44.84.4610.44.84.47
1310.44.84.48/3010.44.84.49 – 10.44.84.5010.44.84.51
1410.44.84.52/3010.44.84.53 – 10.44.84.5410.44.84.55
1510.44.84.56/3010.44.84.57 – 10.44.84.5810.44.84.59
1610.44.84.60/3010.44.84.61 – 10.44.84.6210.44.84.63
1710.44.84.64/3010.44.84.65 – 10.44.84.6610.44.84.67
1810.44.84.68/3010.44.84.69 – 10.44.84.7010.44.84.71
1910.44.84.72/3010.44.84.73 – 10.44.84.7410.44.84.75
2010.44.84.76/3010.44.84.77 – 10.44.84.7810.44.84.79
2110.44.84.80/3010.44.84.81 – 10.44.84.8210.44.84.83
2210.44.84.84/3010.44.84.85 – 10.44.84.8610.44.84.87
2310.44.84.88/3010.44.84.89 – 10.44.84.9010.44.84.91
2410.44.84.92/3010.44.84.93 – 10.44.84.9410.44.84.95
2510.44.84.96/3010.44.84.97 – 10.44.84.9810.44.84.99
2610.44.84.100/3010.44.84.101 – 10.44.84.10210.44.84.103
2710.44.84.104/3010.44.84.105 – 10.44.84.10610.44.84.107
2810.44.84.108/3010.44.84.109 – 10.44.84.11010.44.84.111
2910.44.84.112/3010.44.84.113 – 10.44.84.11410.44.84.115
3010.44.84.116/3010.44.84.117 – 10.44.84.11810.44.84.119
3110.44.84.120/3010.44.84.121 – 10.44.84.12210.44.84.123
3210.44.84.124/3010.44.84.125 – 10.44.84.12610.44.84.127
3310.44.84.128/3010.44.84.129 – 10.44.84.13010.44.84.131
3410.44.84.132/3010.44.84.133 – 10.44.84.13410.44.84.135
3510.44.84.136/3010.44.84.137 – 10.44.84.13810.44.84.139
3610.44.84.140/3010.44.84.141 – 10.44.84.14210.44.84.143
3710.44.84.144/3010.44.84.145 – 10.44.84.14610.44.84.147
3810.44.84.148/3010.44.84.149 – 10.44.84.15010.44.84.151
3910.44.84.152/3010.44.84.153 – 10.44.84.15410.44.84.155
4010.44.84.156/3010.44.84.157 – 10.44.84.15810.44.84.159
4110.44.84.160/3010.44.84.161 – 10.44.84.16210.44.84.163
4210.44.84.164/3010.44.84.165 – 10.44.84.16610.44.84.167
4310.44.84.168/3010.44.84.169 – 10.44.84.17010.44.84.171
4410.44.84.172/3010.44.84.173 – 10.44.84.17410.44.84.175
4510.44.84.176/3010.44.84.177 – 10.44.84.17810.44.84.179
4610.44.84.180/3010.44.84.181 – 10.44.84.18210.44.84.183
4710.44.84.184/3010.44.84.185 – 10.44.84.18610.44.84.187
4810.44.84.188/3010.44.84.189 – 10.44.84.19010.44.84.191
4910.44.84.192/3010.44.84.193 – 10.44.84.19410.44.84.195
5010.44.84.196/3010.44.84.197 – 10.44.84.19810.44.84.199
5110.44.84.200/3010.44.84.201 – 10.44.84.20210.44.84.203
5210.44.84.204/3010.44.84.205 – 10.44.84.20610.44.84.207
5310.44.84.208/3010.44.84.209 – 10.44.84.21010.44.84.211
5410.44.84.212/3010.44.84.213 – 10.44.84.21410.44.84.215
5510.44.84.216/3010.44.84.217 – 10.44.84.21810.44.84.219
5610.44.84.220/3010.44.84.221 – 10.44.84.22210.44.84.223
5710.44.84.224/3010.44.84.225 – 10.44.84.22610.44.84.227
5810.44.84.228/3010.44.84.229 – 10.44.84.23010.44.84.231
5910.44.84.232/3010.44.84.233 – 10.44.84.23410.44.84.235
6010.44.84.236/3010.44.84.237 – 10.44.84.23810.44.84.239
6110.44.84.240/3010.44.84.241 – 10.44.84.24210.44.84.243
6210.44.84.244/3010.44.84.245 – 10.44.84.24610.44.84.247
6310.44.84.248/3010.44.84.249 – 10.44.84.25010.44.84.251
6410.44.84.252/3010.44.84.253 – 10.44.84.25410.44.84.255
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 →