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)10.7.32.0/23
network10.7.32.0/23
broadcast10.7.33.255
first host10.7.32.1
last host10.7.33.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.7.32.0/23
address00001010.00000111.00100000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000111.00100000.00000000
broadcast00001010.00000111.00100001.11111111
green = network part, grey = host part
hex0x0a072000
decimal168239104
reverse dns0.32.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:2000

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.7.32.0/3010.7.32.1 – 10.7.32.210.7.32.3
210.7.32.4/3010.7.32.5 – 10.7.32.610.7.32.7
310.7.32.8/3010.7.32.9 – 10.7.32.1010.7.32.11
410.7.32.12/3010.7.32.13 – 10.7.32.1410.7.32.15
510.7.32.16/3010.7.32.17 – 10.7.32.1810.7.32.19
610.7.32.20/3010.7.32.21 – 10.7.32.2210.7.32.23
710.7.32.24/3010.7.32.25 – 10.7.32.2610.7.32.27
810.7.32.28/3010.7.32.29 – 10.7.32.3010.7.32.31
910.7.32.32/3010.7.32.33 – 10.7.32.3410.7.32.35
1010.7.32.36/3010.7.32.37 – 10.7.32.3810.7.32.39
1110.7.32.40/3010.7.32.41 – 10.7.32.4210.7.32.43
1210.7.32.44/3010.7.32.45 – 10.7.32.4610.7.32.47
1310.7.32.48/3010.7.32.49 – 10.7.32.5010.7.32.51
1410.7.32.52/3010.7.32.53 – 10.7.32.5410.7.32.55
1510.7.32.56/3010.7.32.57 – 10.7.32.5810.7.32.59
1610.7.32.60/3010.7.32.61 – 10.7.32.6210.7.32.63
1710.7.32.64/3010.7.32.65 – 10.7.32.6610.7.32.67
1810.7.32.68/3010.7.32.69 – 10.7.32.7010.7.32.71
1910.7.32.72/3010.7.32.73 – 10.7.32.7410.7.32.75
2010.7.32.76/3010.7.32.77 – 10.7.32.7810.7.32.79
2110.7.32.80/3010.7.32.81 – 10.7.32.8210.7.32.83
2210.7.32.84/3010.7.32.85 – 10.7.32.8610.7.32.87
2310.7.32.88/3010.7.32.89 – 10.7.32.9010.7.32.91
2410.7.32.92/3010.7.32.93 – 10.7.32.9410.7.32.95
2510.7.32.96/3010.7.32.97 – 10.7.32.9810.7.32.99
2610.7.32.100/3010.7.32.101 – 10.7.32.10210.7.32.103
2710.7.32.104/3010.7.32.105 – 10.7.32.10610.7.32.107
2810.7.32.108/3010.7.32.109 – 10.7.32.11010.7.32.111
2910.7.32.112/3010.7.32.113 – 10.7.32.11410.7.32.115
3010.7.32.116/3010.7.32.117 – 10.7.32.11810.7.32.119
3110.7.32.120/3010.7.32.121 – 10.7.32.12210.7.32.123
3210.7.32.124/3010.7.32.125 – 10.7.32.12610.7.32.127
3310.7.32.128/3010.7.32.129 – 10.7.32.13010.7.32.131
3410.7.32.132/3010.7.32.133 – 10.7.32.13410.7.32.135
3510.7.32.136/3010.7.32.137 – 10.7.32.13810.7.32.139
3610.7.32.140/3010.7.32.141 – 10.7.32.14210.7.32.143
3710.7.32.144/3010.7.32.145 – 10.7.32.14610.7.32.147
3810.7.32.148/3010.7.32.149 – 10.7.32.15010.7.32.151
3910.7.32.152/3010.7.32.153 – 10.7.32.15410.7.32.155
4010.7.32.156/3010.7.32.157 – 10.7.32.15810.7.32.159
4110.7.32.160/3010.7.32.161 – 10.7.32.16210.7.32.163
4210.7.32.164/3010.7.32.165 – 10.7.32.16610.7.32.167
4310.7.32.168/3010.7.32.169 – 10.7.32.17010.7.32.171
4410.7.32.172/3010.7.32.173 – 10.7.32.17410.7.32.175
4510.7.32.176/3010.7.32.177 – 10.7.32.17810.7.32.179
4610.7.32.180/3010.7.32.181 – 10.7.32.18210.7.32.183
4710.7.32.184/3010.7.32.185 – 10.7.32.18610.7.32.187
4810.7.32.188/3010.7.32.189 – 10.7.32.19010.7.32.191
4910.7.32.192/3010.7.32.193 – 10.7.32.19410.7.32.195
5010.7.32.196/3010.7.32.197 – 10.7.32.19810.7.32.199
5110.7.32.200/3010.7.32.201 – 10.7.32.20210.7.32.203
5210.7.32.204/3010.7.32.205 – 10.7.32.20610.7.32.207
5310.7.32.208/3010.7.32.209 – 10.7.32.21010.7.32.211
5410.7.32.212/3010.7.32.213 – 10.7.32.21410.7.32.215
5510.7.32.216/3010.7.32.217 – 10.7.32.21810.7.32.219
5610.7.32.220/3010.7.32.221 – 10.7.32.22210.7.32.223
5710.7.32.224/3010.7.32.225 – 10.7.32.22610.7.32.227
5810.7.32.228/3010.7.32.229 – 10.7.32.23010.7.32.231
5910.7.32.232/3010.7.32.233 – 10.7.32.23410.7.32.235
6010.7.32.236/3010.7.32.237 – 10.7.32.23810.7.32.239
6110.7.32.240/3010.7.32.241 – 10.7.32.24210.7.32.243
6210.7.32.244/3010.7.32.245 – 10.7.32.24610.7.32.247
6310.7.32.248/3010.7.32.249 – 10.7.32.25010.7.32.251
6410.7.32.252/3010.7.32.253 – 10.7.32.25410.7.32.255
6510.7.33.0/3010.7.33.1 – 10.7.33.210.7.33.3
6610.7.33.4/3010.7.33.5 – 10.7.33.610.7.33.7
6710.7.33.8/3010.7.33.9 – 10.7.33.1010.7.33.11
6810.7.33.12/3010.7.33.13 – 10.7.33.1410.7.33.15
6910.7.33.16/3010.7.33.17 – 10.7.33.1810.7.33.19
7010.7.33.20/3010.7.33.21 – 10.7.33.2210.7.33.23
7110.7.33.24/3010.7.33.25 – 10.7.33.2610.7.33.27
7210.7.33.28/3010.7.33.29 – 10.7.33.3010.7.33.31
7310.7.33.32/3010.7.33.33 – 10.7.33.3410.7.33.35
7410.7.33.36/3010.7.33.37 – 10.7.33.3810.7.33.39
7510.7.33.40/3010.7.33.41 – 10.7.33.4210.7.33.43
7610.7.33.44/3010.7.33.45 – 10.7.33.4610.7.33.47
7710.7.33.48/3010.7.33.49 – 10.7.33.5010.7.33.51
7810.7.33.52/3010.7.33.53 – 10.7.33.5410.7.33.55
7910.7.33.56/3010.7.33.57 – 10.7.33.5810.7.33.59
8010.7.33.60/3010.7.33.61 – 10.7.33.6210.7.33.63
8110.7.33.64/3010.7.33.65 – 10.7.33.6610.7.33.67
8210.7.33.68/3010.7.33.69 – 10.7.33.7010.7.33.71
8310.7.33.72/3010.7.33.73 – 10.7.33.7410.7.33.75
8410.7.33.76/3010.7.33.77 – 10.7.33.7810.7.33.79
8510.7.33.80/3010.7.33.81 – 10.7.33.8210.7.33.83
8610.7.33.84/3010.7.33.85 – 10.7.33.8610.7.33.87
8710.7.33.88/3010.7.33.89 – 10.7.33.9010.7.33.91
8810.7.33.92/3010.7.33.93 – 10.7.33.9410.7.33.95
8910.7.33.96/3010.7.33.97 – 10.7.33.9810.7.33.99
9010.7.33.100/3010.7.33.101 – 10.7.33.10210.7.33.103
9110.7.33.104/3010.7.33.105 – 10.7.33.10610.7.33.107
9210.7.33.108/3010.7.33.109 – 10.7.33.11010.7.33.111
9310.7.33.112/3010.7.33.113 – 10.7.33.11410.7.33.115
9410.7.33.116/3010.7.33.117 – 10.7.33.11810.7.33.119
9510.7.33.120/3010.7.33.121 – 10.7.33.12210.7.33.123
9610.7.33.124/3010.7.33.125 – 10.7.33.12610.7.33.127
9710.7.33.128/3010.7.33.129 – 10.7.33.13010.7.33.131
9810.7.33.132/3010.7.33.133 – 10.7.33.13410.7.33.135
9910.7.33.136/3010.7.33.137 – 10.7.33.13810.7.33.139
10010.7.33.140/3010.7.33.141 – 10.7.33.14210.7.33.143
10110.7.33.144/3010.7.33.145 – 10.7.33.14610.7.33.147
10210.7.33.148/3010.7.33.149 – 10.7.33.15010.7.33.151
10310.7.33.152/3010.7.33.153 – 10.7.33.15410.7.33.155
10410.7.33.156/3010.7.33.157 – 10.7.33.15810.7.33.159
10510.7.33.160/3010.7.33.161 – 10.7.33.16210.7.33.163
10610.7.33.164/3010.7.33.165 – 10.7.33.16610.7.33.167
10710.7.33.168/3010.7.33.169 – 10.7.33.17010.7.33.171
10810.7.33.172/3010.7.33.173 – 10.7.33.17410.7.33.175
10910.7.33.176/3010.7.33.177 – 10.7.33.17810.7.33.179
11010.7.33.180/3010.7.33.181 – 10.7.33.18210.7.33.183
11110.7.33.184/3010.7.33.185 – 10.7.33.18610.7.33.187
11210.7.33.188/3010.7.33.189 – 10.7.33.19010.7.33.191
11310.7.33.192/3010.7.33.193 – 10.7.33.19410.7.33.195
11410.7.33.196/3010.7.33.197 – 10.7.33.19810.7.33.199
11510.7.33.200/3010.7.33.201 – 10.7.33.20210.7.33.203
11610.7.33.204/3010.7.33.205 – 10.7.33.20610.7.33.207
11710.7.33.208/3010.7.33.209 – 10.7.33.21010.7.33.211
11810.7.33.212/3010.7.33.213 – 10.7.33.21410.7.33.215
11910.7.33.216/3010.7.33.217 – 10.7.33.21810.7.33.219
12010.7.33.220/3010.7.33.221 – 10.7.33.22210.7.33.223
12110.7.33.224/3010.7.33.225 – 10.7.33.22610.7.33.227
12210.7.33.228/3010.7.33.229 – 10.7.33.23010.7.33.231
12310.7.33.232/3010.7.33.233 – 10.7.33.23410.7.33.235
12410.7.33.236/3010.7.33.237 – 10.7.33.23810.7.33.239
12510.7.33.240/3010.7.33.241 – 10.7.33.24210.7.33.243
12610.7.33.244/3010.7.33.245 – 10.7.33.24610.7.33.247
12710.7.33.248/3010.7.33.249 – 10.7.33.25010.7.33.251
12810.7.33.252/3010.7.33.253 – 10.7.33.25410.7.33.255
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 →