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)10.166.232.0/23
network10.166.232.0/23
broadcast10.166.233.255
first host10.166.232.1
last host10.166.233.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.166.232.0/23
address00001010.10100110.11101000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10100110.11101000.00000000
broadcast00001010.10100110.11101001.11111111
green = network part, grey = host part
hex0x0aa6e800
decimal178710528
reverse dns0.232.166.10.in-addr.arpa
ipv4-mapped::ffff:aa6:e800

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.166.232.0/3010.166.232.1 – 10.166.232.210.166.232.3
210.166.232.4/3010.166.232.5 – 10.166.232.610.166.232.7
310.166.232.8/3010.166.232.9 – 10.166.232.1010.166.232.11
410.166.232.12/3010.166.232.13 – 10.166.232.1410.166.232.15
510.166.232.16/3010.166.232.17 – 10.166.232.1810.166.232.19
610.166.232.20/3010.166.232.21 – 10.166.232.2210.166.232.23
710.166.232.24/3010.166.232.25 – 10.166.232.2610.166.232.27
810.166.232.28/3010.166.232.29 – 10.166.232.3010.166.232.31
910.166.232.32/3010.166.232.33 – 10.166.232.3410.166.232.35
1010.166.232.36/3010.166.232.37 – 10.166.232.3810.166.232.39
1110.166.232.40/3010.166.232.41 – 10.166.232.4210.166.232.43
1210.166.232.44/3010.166.232.45 – 10.166.232.4610.166.232.47
1310.166.232.48/3010.166.232.49 – 10.166.232.5010.166.232.51
1410.166.232.52/3010.166.232.53 – 10.166.232.5410.166.232.55
1510.166.232.56/3010.166.232.57 – 10.166.232.5810.166.232.59
1610.166.232.60/3010.166.232.61 – 10.166.232.6210.166.232.63
1710.166.232.64/3010.166.232.65 – 10.166.232.6610.166.232.67
1810.166.232.68/3010.166.232.69 – 10.166.232.7010.166.232.71
1910.166.232.72/3010.166.232.73 – 10.166.232.7410.166.232.75
2010.166.232.76/3010.166.232.77 – 10.166.232.7810.166.232.79
2110.166.232.80/3010.166.232.81 – 10.166.232.8210.166.232.83
2210.166.232.84/3010.166.232.85 – 10.166.232.8610.166.232.87
2310.166.232.88/3010.166.232.89 – 10.166.232.9010.166.232.91
2410.166.232.92/3010.166.232.93 – 10.166.232.9410.166.232.95
2510.166.232.96/3010.166.232.97 – 10.166.232.9810.166.232.99
2610.166.232.100/3010.166.232.101 – 10.166.232.10210.166.232.103
2710.166.232.104/3010.166.232.105 – 10.166.232.10610.166.232.107
2810.166.232.108/3010.166.232.109 – 10.166.232.11010.166.232.111
2910.166.232.112/3010.166.232.113 – 10.166.232.11410.166.232.115
3010.166.232.116/3010.166.232.117 – 10.166.232.11810.166.232.119
3110.166.232.120/3010.166.232.121 – 10.166.232.12210.166.232.123
3210.166.232.124/3010.166.232.125 – 10.166.232.12610.166.232.127
3310.166.232.128/3010.166.232.129 – 10.166.232.13010.166.232.131
3410.166.232.132/3010.166.232.133 – 10.166.232.13410.166.232.135
3510.166.232.136/3010.166.232.137 – 10.166.232.13810.166.232.139
3610.166.232.140/3010.166.232.141 – 10.166.232.14210.166.232.143
3710.166.232.144/3010.166.232.145 – 10.166.232.14610.166.232.147
3810.166.232.148/3010.166.232.149 – 10.166.232.15010.166.232.151
3910.166.232.152/3010.166.232.153 – 10.166.232.15410.166.232.155
4010.166.232.156/3010.166.232.157 – 10.166.232.15810.166.232.159
4110.166.232.160/3010.166.232.161 – 10.166.232.16210.166.232.163
4210.166.232.164/3010.166.232.165 – 10.166.232.16610.166.232.167
4310.166.232.168/3010.166.232.169 – 10.166.232.17010.166.232.171
4410.166.232.172/3010.166.232.173 – 10.166.232.17410.166.232.175
4510.166.232.176/3010.166.232.177 – 10.166.232.17810.166.232.179
4610.166.232.180/3010.166.232.181 – 10.166.232.18210.166.232.183
4710.166.232.184/3010.166.232.185 – 10.166.232.18610.166.232.187
4810.166.232.188/3010.166.232.189 – 10.166.232.19010.166.232.191
4910.166.232.192/3010.166.232.193 – 10.166.232.19410.166.232.195
5010.166.232.196/3010.166.232.197 – 10.166.232.19810.166.232.199
5110.166.232.200/3010.166.232.201 – 10.166.232.20210.166.232.203
5210.166.232.204/3010.166.232.205 – 10.166.232.20610.166.232.207
5310.166.232.208/3010.166.232.209 – 10.166.232.21010.166.232.211
5410.166.232.212/3010.166.232.213 – 10.166.232.21410.166.232.215
5510.166.232.216/3010.166.232.217 – 10.166.232.21810.166.232.219
5610.166.232.220/3010.166.232.221 – 10.166.232.22210.166.232.223
5710.166.232.224/3010.166.232.225 – 10.166.232.22610.166.232.227
5810.166.232.228/3010.166.232.229 – 10.166.232.23010.166.232.231
5910.166.232.232/3010.166.232.233 – 10.166.232.23410.166.232.235
6010.166.232.236/3010.166.232.237 – 10.166.232.23810.166.232.239
6110.166.232.240/3010.166.232.241 – 10.166.232.24210.166.232.243
6210.166.232.244/3010.166.232.245 – 10.166.232.24610.166.232.247
6310.166.232.248/3010.166.232.249 – 10.166.232.25010.166.232.251
6410.166.232.252/3010.166.232.253 – 10.166.232.25410.166.232.255
6510.166.233.0/3010.166.233.1 – 10.166.233.210.166.233.3
6610.166.233.4/3010.166.233.5 – 10.166.233.610.166.233.7
6710.166.233.8/3010.166.233.9 – 10.166.233.1010.166.233.11
6810.166.233.12/3010.166.233.13 – 10.166.233.1410.166.233.15
6910.166.233.16/3010.166.233.17 – 10.166.233.1810.166.233.19
7010.166.233.20/3010.166.233.21 – 10.166.233.2210.166.233.23
7110.166.233.24/3010.166.233.25 – 10.166.233.2610.166.233.27
7210.166.233.28/3010.166.233.29 – 10.166.233.3010.166.233.31
7310.166.233.32/3010.166.233.33 – 10.166.233.3410.166.233.35
7410.166.233.36/3010.166.233.37 – 10.166.233.3810.166.233.39
7510.166.233.40/3010.166.233.41 – 10.166.233.4210.166.233.43
7610.166.233.44/3010.166.233.45 – 10.166.233.4610.166.233.47
7710.166.233.48/3010.166.233.49 – 10.166.233.5010.166.233.51
7810.166.233.52/3010.166.233.53 – 10.166.233.5410.166.233.55
7910.166.233.56/3010.166.233.57 – 10.166.233.5810.166.233.59
8010.166.233.60/3010.166.233.61 – 10.166.233.6210.166.233.63
8110.166.233.64/3010.166.233.65 – 10.166.233.6610.166.233.67
8210.166.233.68/3010.166.233.69 – 10.166.233.7010.166.233.71
8310.166.233.72/3010.166.233.73 – 10.166.233.7410.166.233.75
8410.166.233.76/3010.166.233.77 – 10.166.233.7810.166.233.79
8510.166.233.80/3010.166.233.81 – 10.166.233.8210.166.233.83
8610.166.233.84/3010.166.233.85 – 10.166.233.8610.166.233.87
8710.166.233.88/3010.166.233.89 – 10.166.233.9010.166.233.91
8810.166.233.92/3010.166.233.93 – 10.166.233.9410.166.233.95
8910.166.233.96/3010.166.233.97 – 10.166.233.9810.166.233.99
9010.166.233.100/3010.166.233.101 – 10.166.233.10210.166.233.103
9110.166.233.104/3010.166.233.105 – 10.166.233.10610.166.233.107
9210.166.233.108/3010.166.233.109 – 10.166.233.11010.166.233.111
9310.166.233.112/3010.166.233.113 – 10.166.233.11410.166.233.115
9410.166.233.116/3010.166.233.117 – 10.166.233.11810.166.233.119
9510.166.233.120/3010.166.233.121 – 10.166.233.12210.166.233.123
9610.166.233.124/3010.166.233.125 – 10.166.233.12610.166.233.127
9710.166.233.128/3010.166.233.129 – 10.166.233.13010.166.233.131
9810.166.233.132/3010.166.233.133 – 10.166.233.13410.166.233.135
9910.166.233.136/3010.166.233.137 – 10.166.233.13810.166.233.139
10010.166.233.140/3010.166.233.141 – 10.166.233.14210.166.233.143
10110.166.233.144/3010.166.233.145 – 10.166.233.14610.166.233.147
10210.166.233.148/3010.166.233.149 – 10.166.233.15010.166.233.151
10310.166.233.152/3010.166.233.153 – 10.166.233.15410.166.233.155
10410.166.233.156/3010.166.233.157 – 10.166.233.15810.166.233.159
10510.166.233.160/3010.166.233.161 – 10.166.233.16210.166.233.163
10610.166.233.164/3010.166.233.165 – 10.166.233.16610.166.233.167
10710.166.233.168/3010.166.233.169 – 10.166.233.17010.166.233.171
10810.166.233.172/3010.166.233.173 – 10.166.233.17410.166.233.175
10910.166.233.176/3010.166.233.177 – 10.166.233.17810.166.233.179
11010.166.233.180/3010.166.233.181 – 10.166.233.18210.166.233.183
11110.166.233.184/3010.166.233.185 – 10.166.233.18610.166.233.187
11210.166.233.188/3010.166.233.189 – 10.166.233.19010.166.233.191
11310.166.233.192/3010.166.233.193 – 10.166.233.19410.166.233.195
11410.166.233.196/3010.166.233.197 – 10.166.233.19810.166.233.199
11510.166.233.200/3010.166.233.201 – 10.166.233.20210.166.233.203
11610.166.233.204/3010.166.233.205 – 10.166.233.20610.166.233.207
11710.166.233.208/3010.166.233.209 – 10.166.233.21010.166.233.211
11810.166.233.212/3010.166.233.213 – 10.166.233.21410.166.233.215
11910.166.233.216/3010.166.233.217 – 10.166.233.21810.166.233.219
12010.166.233.220/3010.166.233.221 – 10.166.233.22210.166.233.223
12110.166.233.224/3010.166.233.225 – 10.166.233.22610.166.233.227
12210.166.233.228/3010.166.233.229 – 10.166.233.23010.166.233.231
12310.166.233.232/3010.166.233.233 – 10.166.233.23410.166.233.235
12410.166.233.236/3010.166.233.237 – 10.166.233.23810.166.233.239
12510.166.233.240/3010.166.233.241 – 10.166.233.24210.166.233.243
12610.166.233.244/3010.166.233.245 – 10.166.233.24610.166.233.247
12710.166.233.248/3010.166.233.249 – 10.166.233.25010.166.233.251
12810.166.233.252/3010.166.233.253 – 10.166.233.25410.166.233.255
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 →