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)10.232.124.0/23
network10.232.124.0/23
broadcast10.232.125.255
first host10.232.124.1
last host10.232.125.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.232.124.0/23
address00001010.11101000.01111100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.11101000.01111100.00000000
broadcast00001010.11101000.01111101.11111111
green = network part, grey = host part
hex0x0ae87c00
decimal183008256
reverse dns0.124.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:7c00

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.232.124.0/3010.232.124.1 – 10.232.124.210.232.124.3
210.232.124.4/3010.232.124.5 – 10.232.124.610.232.124.7
310.232.124.8/3010.232.124.9 – 10.232.124.1010.232.124.11
410.232.124.12/3010.232.124.13 – 10.232.124.1410.232.124.15
510.232.124.16/3010.232.124.17 – 10.232.124.1810.232.124.19
610.232.124.20/3010.232.124.21 – 10.232.124.2210.232.124.23
710.232.124.24/3010.232.124.25 – 10.232.124.2610.232.124.27
810.232.124.28/3010.232.124.29 – 10.232.124.3010.232.124.31
910.232.124.32/3010.232.124.33 – 10.232.124.3410.232.124.35
1010.232.124.36/3010.232.124.37 – 10.232.124.3810.232.124.39
1110.232.124.40/3010.232.124.41 – 10.232.124.4210.232.124.43
1210.232.124.44/3010.232.124.45 – 10.232.124.4610.232.124.47
1310.232.124.48/3010.232.124.49 – 10.232.124.5010.232.124.51
1410.232.124.52/3010.232.124.53 – 10.232.124.5410.232.124.55
1510.232.124.56/3010.232.124.57 – 10.232.124.5810.232.124.59
1610.232.124.60/3010.232.124.61 – 10.232.124.6210.232.124.63
1710.232.124.64/3010.232.124.65 – 10.232.124.6610.232.124.67
1810.232.124.68/3010.232.124.69 – 10.232.124.7010.232.124.71
1910.232.124.72/3010.232.124.73 – 10.232.124.7410.232.124.75
2010.232.124.76/3010.232.124.77 – 10.232.124.7810.232.124.79
2110.232.124.80/3010.232.124.81 – 10.232.124.8210.232.124.83
2210.232.124.84/3010.232.124.85 – 10.232.124.8610.232.124.87
2310.232.124.88/3010.232.124.89 – 10.232.124.9010.232.124.91
2410.232.124.92/3010.232.124.93 – 10.232.124.9410.232.124.95
2510.232.124.96/3010.232.124.97 – 10.232.124.9810.232.124.99
2610.232.124.100/3010.232.124.101 – 10.232.124.10210.232.124.103
2710.232.124.104/3010.232.124.105 – 10.232.124.10610.232.124.107
2810.232.124.108/3010.232.124.109 – 10.232.124.11010.232.124.111
2910.232.124.112/3010.232.124.113 – 10.232.124.11410.232.124.115
3010.232.124.116/3010.232.124.117 – 10.232.124.11810.232.124.119
3110.232.124.120/3010.232.124.121 – 10.232.124.12210.232.124.123
3210.232.124.124/3010.232.124.125 – 10.232.124.12610.232.124.127
3310.232.124.128/3010.232.124.129 – 10.232.124.13010.232.124.131
3410.232.124.132/3010.232.124.133 – 10.232.124.13410.232.124.135
3510.232.124.136/3010.232.124.137 – 10.232.124.13810.232.124.139
3610.232.124.140/3010.232.124.141 – 10.232.124.14210.232.124.143
3710.232.124.144/3010.232.124.145 – 10.232.124.14610.232.124.147
3810.232.124.148/3010.232.124.149 – 10.232.124.15010.232.124.151
3910.232.124.152/3010.232.124.153 – 10.232.124.15410.232.124.155
4010.232.124.156/3010.232.124.157 – 10.232.124.15810.232.124.159
4110.232.124.160/3010.232.124.161 – 10.232.124.16210.232.124.163
4210.232.124.164/3010.232.124.165 – 10.232.124.16610.232.124.167
4310.232.124.168/3010.232.124.169 – 10.232.124.17010.232.124.171
4410.232.124.172/3010.232.124.173 – 10.232.124.17410.232.124.175
4510.232.124.176/3010.232.124.177 – 10.232.124.17810.232.124.179
4610.232.124.180/3010.232.124.181 – 10.232.124.18210.232.124.183
4710.232.124.184/3010.232.124.185 – 10.232.124.18610.232.124.187
4810.232.124.188/3010.232.124.189 – 10.232.124.19010.232.124.191
4910.232.124.192/3010.232.124.193 – 10.232.124.19410.232.124.195
5010.232.124.196/3010.232.124.197 – 10.232.124.19810.232.124.199
5110.232.124.200/3010.232.124.201 – 10.232.124.20210.232.124.203
5210.232.124.204/3010.232.124.205 – 10.232.124.20610.232.124.207
5310.232.124.208/3010.232.124.209 – 10.232.124.21010.232.124.211
5410.232.124.212/3010.232.124.213 – 10.232.124.21410.232.124.215
5510.232.124.216/3010.232.124.217 – 10.232.124.21810.232.124.219
5610.232.124.220/3010.232.124.221 – 10.232.124.22210.232.124.223
5710.232.124.224/3010.232.124.225 – 10.232.124.22610.232.124.227
5810.232.124.228/3010.232.124.229 – 10.232.124.23010.232.124.231
5910.232.124.232/3010.232.124.233 – 10.232.124.23410.232.124.235
6010.232.124.236/3010.232.124.237 – 10.232.124.23810.232.124.239
6110.232.124.240/3010.232.124.241 – 10.232.124.24210.232.124.243
6210.232.124.244/3010.232.124.245 – 10.232.124.24610.232.124.247
6310.232.124.248/3010.232.124.249 – 10.232.124.25010.232.124.251
6410.232.124.252/3010.232.124.253 – 10.232.124.25410.232.124.255
6510.232.125.0/3010.232.125.1 – 10.232.125.210.232.125.3
6610.232.125.4/3010.232.125.5 – 10.232.125.610.232.125.7
6710.232.125.8/3010.232.125.9 – 10.232.125.1010.232.125.11
6810.232.125.12/3010.232.125.13 – 10.232.125.1410.232.125.15
6910.232.125.16/3010.232.125.17 – 10.232.125.1810.232.125.19
7010.232.125.20/3010.232.125.21 – 10.232.125.2210.232.125.23
7110.232.125.24/3010.232.125.25 – 10.232.125.2610.232.125.27
7210.232.125.28/3010.232.125.29 – 10.232.125.3010.232.125.31
7310.232.125.32/3010.232.125.33 – 10.232.125.3410.232.125.35
7410.232.125.36/3010.232.125.37 – 10.232.125.3810.232.125.39
7510.232.125.40/3010.232.125.41 – 10.232.125.4210.232.125.43
7610.232.125.44/3010.232.125.45 – 10.232.125.4610.232.125.47
7710.232.125.48/3010.232.125.49 – 10.232.125.5010.232.125.51
7810.232.125.52/3010.232.125.53 – 10.232.125.5410.232.125.55
7910.232.125.56/3010.232.125.57 – 10.232.125.5810.232.125.59
8010.232.125.60/3010.232.125.61 – 10.232.125.6210.232.125.63
8110.232.125.64/3010.232.125.65 – 10.232.125.6610.232.125.67
8210.232.125.68/3010.232.125.69 – 10.232.125.7010.232.125.71
8310.232.125.72/3010.232.125.73 – 10.232.125.7410.232.125.75
8410.232.125.76/3010.232.125.77 – 10.232.125.7810.232.125.79
8510.232.125.80/3010.232.125.81 – 10.232.125.8210.232.125.83
8610.232.125.84/3010.232.125.85 – 10.232.125.8610.232.125.87
8710.232.125.88/3010.232.125.89 – 10.232.125.9010.232.125.91
8810.232.125.92/3010.232.125.93 – 10.232.125.9410.232.125.95
8910.232.125.96/3010.232.125.97 – 10.232.125.9810.232.125.99
9010.232.125.100/3010.232.125.101 – 10.232.125.10210.232.125.103
9110.232.125.104/3010.232.125.105 – 10.232.125.10610.232.125.107
9210.232.125.108/3010.232.125.109 – 10.232.125.11010.232.125.111
9310.232.125.112/3010.232.125.113 – 10.232.125.11410.232.125.115
9410.232.125.116/3010.232.125.117 – 10.232.125.11810.232.125.119
9510.232.125.120/3010.232.125.121 – 10.232.125.12210.232.125.123
9610.232.125.124/3010.232.125.125 – 10.232.125.12610.232.125.127
9710.232.125.128/3010.232.125.129 – 10.232.125.13010.232.125.131
9810.232.125.132/3010.232.125.133 – 10.232.125.13410.232.125.135
9910.232.125.136/3010.232.125.137 – 10.232.125.13810.232.125.139
10010.232.125.140/3010.232.125.141 – 10.232.125.14210.232.125.143
10110.232.125.144/3010.232.125.145 – 10.232.125.14610.232.125.147
10210.232.125.148/3010.232.125.149 – 10.232.125.15010.232.125.151
10310.232.125.152/3010.232.125.153 – 10.232.125.15410.232.125.155
10410.232.125.156/3010.232.125.157 – 10.232.125.15810.232.125.159
10510.232.125.160/3010.232.125.161 – 10.232.125.16210.232.125.163
10610.232.125.164/3010.232.125.165 – 10.232.125.16610.232.125.167
10710.232.125.168/3010.232.125.169 – 10.232.125.17010.232.125.171
10810.232.125.172/3010.232.125.173 – 10.232.125.17410.232.125.175
10910.232.125.176/3010.232.125.177 – 10.232.125.17810.232.125.179
11010.232.125.180/3010.232.125.181 – 10.232.125.18210.232.125.183
11110.232.125.184/3010.232.125.185 – 10.232.125.18610.232.125.187
11210.232.125.188/3010.232.125.189 – 10.232.125.19010.232.125.191
11310.232.125.192/3010.232.125.193 – 10.232.125.19410.232.125.195
11410.232.125.196/3010.232.125.197 – 10.232.125.19810.232.125.199
11510.232.125.200/3010.232.125.201 – 10.232.125.20210.232.125.203
11610.232.125.204/3010.232.125.205 – 10.232.125.20610.232.125.207
11710.232.125.208/3010.232.125.209 – 10.232.125.21010.232.125.211
11810.232.125.212/3010.232.125.213 – 10.232.125.21410.232.125.215
11910.232.125.216/3010.232.125.217 – 10.232.125.21810.232.125.219
12010.232.125.220/3010.232.125.221 – 10.232.125.22210.232.125.223
12110.232.125.224/3010.232.125.225 – 10.232.125.22610.232.125.227
12210.232.125.228/3010.232.125.229 – 10.232.125.23010.232.125.231
12310.232.125.232/3010.232.125.233 – 10.232.125.23410.232.125.235
12410.232.125.236/3010.232.125.237 – 10.232.125.23810.232.125.239
12510.232.125.240/3010.232.125.241 – 10.232.125.24210.232.125.243
12610.232.125.244/3010.232.125.245 – 10.232.125.24610.232.125.247
12710.232.125.248/3010.232.125.249 – 10.232.125.25010.232.125.251
12810.232.125.252/3010.232.125.253 – 10.232.125.25410.232.125.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /23
/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-
/23255.255.254.05125101
/24255.255.255.02562542 split →
/25255.255.255.1281281264 split →
/26255.255.255.19264628 split →
/27255.255.255.224323016 split →
/28255.255.255.240161432 split →
/29255.255.255.2488664 split →
/30255.255.255.25242128 split →
/31255.255.255.25422256 split →
/32255.255.255.25511512 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 →