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)10.232.36.0/23
network10.232.36.0/23
broadcast10.232.37.255
first host10.232.36.1
last host10.232.37.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.232.36.0/23
address00001010.11101000.00100100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.11101000.00100100.00000000
broadcast00001010.11101000.00100101.11111111
green = network part, grey = host part
hex0x0ae82400
decimal182985728
reverse dns0.36.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:2400

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.232.36.0/3010.232.36.1 – 10.232.36.210.232.36.3
210.232.36.4/3010.232.36.5 – 10.232.36.610.232.36.7
310.232.36.8/3010.232.36.9 – 10.232.36.1010.232.36.11
410.232.36.12/3010.232.36.13 – 10.232.36.1410.232.36.15
510.232.36.16/3010.232.36.17 – 10.232.36.1810.232.36.19
610.232.36.20/3010.232.36.21 – 10.232.36.2210.232.36.23
710.232.36.24/3010.232.36.25 – 10.232.36.2610.232.36.27
810.232.36.28/3010.232.36.29 – 10.232.36.3010.232.36.31
910.232.36.32/3010.232.36.33 – 10.232.36.3410.232.36.35
1010.232.36.36/3010.232.36.37 – 10.232.36.3810.232.36.39
1110.232.36.40/3010.232.36.41 – 10.232.36.4210.232.36.43
1210.232.36.44/3010.232.36.45 – 10.232.36.4610.232.36.47
1310.232.36.48/3010.232.36.49 – 10.232.36.5010.232.36.51
1410.232.36.52/3010.232.36.53 – 10.232.36.5410.232.36.55
1510.232.36.56/3010.232.36.57 – 10.232.36.5810.232.36.59
1610.232.36.60/3010.232.36.61 – 10.232.36.6210.232.36.63
1710.232.36.64/3010.232.36.65 – 10.232.36.6610.232.36.67
1810.232.36.68/3010.232.36.69 – 10.232.36.7010.232.36.71
1910.232.36.72/3010.232.36.73 – 10.232.36.7410.232.36.75
2010.232.36.76/3010.232.36.77 – 10.232.36.7810.232.36.79
2110.232.36.80/3010.232.36.81 – 10.232.36.8210.232.36.83
2210.232.36.84/3010.232.36.85 – 10.232.36.8610.232.36.87
2310.232.36.88/3010.232.36.89 – 10.232.36.9010.232.36.91
2410.232.36.92/3010.232.36.93 – 10.232.36.9410.232.36.95
2510.232.36.96/3010.232.36.97 – 10.232.36.9810.232.36.99
2610.232.36.100/3010.232.36.101 – 10.232.36.10210.232.36.103
2710.232.36.104/3010.232.36.105 – 10.232.36.10610.232.36.107
2810.232.36.108/3010.232.36.109 – 10.232.36.11010.232.36.111
2910.232.36.112/3010.232.36.113 – 10.232.36.11410.232.36.115
3010.232.36.116/3010.232.36.117 – 10.232.36.11810.232.36.119
3110.232.36.120/3010.232.36.121 – 10.232.36.12210.232.36.123
3210.232.36.124/3010.232.36.125 – 10.232.36.12610.232.36.127
3310.232.36.128/3010.232.36.129 – 10.232.36.13010.232.36.131
3410.232.36.132/3010.232.36.133 – 10.232.36.13410.232.36.135
3510.232.36.136/3010.232.36.137 – 10.232.36.13810.232.36.139
3610.232.36.140/3010.232.36.141 – 10.232.36.14210.232.36.143
3710.232.36.144/3010.232.36.145 – 10.232.36.14610.232.36.147
3810.232.36.148/3010.232.36.149 – 10.232.36.15010.232.36.151
3910.232.36.152/3010.232.36.153 – 10.232.36.15410.232.36.155
4010.232.36.156/3010.232.36.157 – 10.232.36.15810.232.36.159
4110.232.36.160/3010.232.36.161 – 10.232.36.16210.232.36.163
4210.232.36.164/3010.232.36.165 – 10.232.36.16610.232.36.167
4310.232.36.168/3010.232.36.169 – 10.232.36.17010.232.36.171
4410.232.36.172/3010.232.36.173 – 10.232.36.17410.232.36.175
4510.232.36.176/3010.232.36.177 – 10.232.36.17810.232.36.179
4610.232.36.180/3010.232.36.181 – 10.232.36.18210.232.36.183
4710.232.36.184/3010.232.36.185 – 10.232.36.18610.232.36.187
4810.232.36.188/3010.232.36.189 – 10.232.36.19010.232.36.191
4910.232.36.192/3010.232.36.193 – 10.232.36.19410.232.36.195
5010.232.36.196/3010.232.36.197 – 10.232.36.19810.232.36.199
5110.232.36.200/3010.232.36.201 – 10.232.36.20210.232.36.203
5210.232.36.204/3010.232.36.205 – 10.232.36.20610.232.36.207
5310.232.36.208/3010.232.36.209 – 10.232.36.21010.232.36.211
5410.232.36.212/3010.232.36.213 – 10.232.36.21410.232.36.215
5510.232.36.216/3010.232.36.217 – 10.232.36.21810.232.36.219
5610.232.36.220/3010.232.36.221 – 10.232.36.22210.232.36.223
5710.232.36.224/3010.232.36.225 – 10.232.36.22610.232.36.227
5810.232.36.228/3010.232.36.229 – 10.232.36.23010.232.36.231
5910.232.36.232/3010.232.36.233 – 10.232.36.23410.232.36.235
6010.232.36.236/3010.232.36.237 – 10.232.36.23810.232.36.239
6110.232.36.240/3010.232.36.241 – 10.232.36.24210.232.36.243
6210.232.36.244/3010.232.36.245 – 10.232.36.24610.232.36.247
6310.232.36.248/3010.232.36.249 – 10.232.36.25010.232.36.251
6410.232.36.252/3010.232.36.253 – 10.232.36.25410.232.36.255
6510.232.37.0/3010.232.37.1 – 10.232.37.210.232.37.3
6610.232.37.4/3010.232.37.5 – 10.232.37.610.232.37.7
6710.232.37.8/3010.232.37.9 – 10.232.37.1010.232.37.11
6810.232.37.12/3010.232.37.13 – 10.232.37.1410.232.37.15
6910.232.37.16/3010.232.37.17 – 10.232.37.1810.232.37.19
7010.232.37.20/3010.232.37.21 – 10.232.37.2210.232.37.23
7110.232.37.24/3010.232.37.25 – 10.232.37.2610.232.37.27
7210.232.37.28/3010.232.37.29 – 10.232.37.3010.232.37.31
7310.232.37.32/3010.232.37.33 – 10.232.37.3410.232.37.35
7410.232.37.36/3010.232.37.37 – 10.232.37.3810.232.37.39
7510.232.37.40/3010.232.37.41 – 10.232.37.4210.232.37.43
7610.232.37.44/3010.232.37.45 – 10.232.37.4610.232.37.47
7710.232.37.48/3010.232.37.49 – 10.232.37.5010.232.37.51
7810.232.37.52/3010.232.37.53 – 10.232.37.5410.232.37.55
7910.232.37.56/3010.232.37.57 – 10.232.37.5810.232.37.59
8010.232.37.60/3010.232.37.61 – 10.232.37.6210.232.37.63
8110.232.37.64/3010.232.37.65 – 10.232.37.6610.232.37.67
8210.232.37.68/3010.232.37.69 – 10.232.37.7010.232.37.71
8310.232.37.72/3010.232.37.73 – 10.232.37.7410.232.37.75
8410.232.37.76/3010.232.37.77 – 10.232.37.7810.232.37.79
8510.232.37.80/3010.232.37.81 – 10.232.37.8210.232.37.83
8610.232.37.84/3010.232.37.85 – 10.232.37.8610.232.37.87
8710.232.37.88/3010.232.37.89 – 10.232.37.9010.232.37.91
8810.232.37.92/3010.232.37.93 – 10.232.37.9410.232.37.95
8910.232.37.96/3010.232.37.97 – 10.232.37.9810.232.37.99
9010.232.37.100/3010.232.37.101 – 10.232.37.10210.232.37.103
9110.232.37.104/3010.232.37.105 – 10.232.37.10610.232.37.107
9210.232.37.108/3010.232.37.109 – 10.232.37.11010.232.37.111
9310.232.37.112/3010.232.37.113 – 10.232.37.11410.232.37.115
9410.232.37.116/3010.232.37.117 – 10.232.37.11810.232.37.119
9510.232.37.120/3010.232.37.121 – 10.232.37.12210.232.37.123
9610.232.37.124/3010.232.37.125 – 10.232.37.12610.232.37.127
9710.232.37.128/3010.232.37.129 – 10.232.37.13010.232.37.131
9810.232.37.132/3010.232.37.133 – 10.232.37.13410.232.37.135
9910.232.37.136/3010.232.37.137 – 10.232.37.13810.232.37.139
10010.232.37.140/3010.232.37.141 – 10.232.37.14210.232.37.143
10110.232.37.144/3010.232.37.145 – 10.232.37.14610.232.37.147
10210.232.37.148/3010.232.37.149 – 10.232.37.15010.232.37.151
10310.232.37.152/3010.232.37.153 – 10.232.37.15410.232.37.155
10410.232.37.156/3010.232.37.157 – 10.232.37.15810.232.37.159
10510.232.37.160/3010.232.37.161 – 10.232.37.16210.232.37.163
10610.232.37.164/3010.232.37.165 – 10.232.37.16610.232.37.167
10710.232.37.168/3010.232.37.169 – 10.232.37.17010.232.37.171
10810.232.37.172/3010.232.37.173 – 10.232.37.17410.232.37.175
10910.232.37.176/3010.232.37.177 – 10.232.37.17810.232.37.179
11010.232.37.180/3010.232.37.181 – 10.232.37.18210.232.37.183
11110.232.37.184/3010.232.37.185 – 10.232.37.18610.232.37.187
11210.232.37.188/3010.232.37.189 – 10.232.37.19010.232.37.191
11310.232.37.192/3010.232.37.193 – 10.232.37.19410.232.37.195
11410.232.37.196/3010.232.37.197 – 10.232.37.19810.232.37.199
11510.232.37.200/3010.232.37.201 – 10.232.37.20210.232.37.203
11610.232.37.204/3010.232.37.205 – 10.232.37.20610.232.37.207
11710.232.37.208/3010.232.37.209 – 10.232.37.21010.232.37.211
11810.232.37.212/3010.232.37.213 – 10.232.37.21410.232.37.215
11910.232.37.216/3010.232.37.217 – 10.232.37.21810.232.37.219
12010.232.37.220/3010.232.37.221 – 10.232.37.22210.232.37.223
12110.232.37.224/3010.232.37.225 – 10.232.37.22610.232.37.227
12210.232.37.228/3010.232.37.229 – 10.232.37.23010.232.37.231
12310.232.37.232/3010.232.37.233 – 10.232.37.23410.232.37.235
12410.232.37.236/3010.232.37.237 – 10.232.37.23810.232.37.239
12510.232.37.240/3010.232.37.241 – 10.232.37.24210.232.37.243
12610.232.37.244/3010.232.37.245 – 10.232.37.24610.232.37.247
12710.232.37.248/3010.232.37.249 – 10.232.37.25010.232.37.251
12810.232.37.252/3010.232.37.253 – 10.232.37.25410.232.37.255
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 →