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)10.131.52.0/23
network10.131.52.0/23
broadcast10.131.53.255
first host10.131.52.1
last host10.131.53.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.131.52.0/23
address00001010.10000011.00110100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10000011.00110100.00000000
broadcast00001010.10000011.00110101.11111111
green = network part, grey = host part
hex0x0a833400
decimal176370688
reverse dns0.52.131.10.in-addr.arpa
ipv4-mapped::ffff:a83:3400

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.131.52.0/3010.131.52.1 – 10.131.52.210.131.52.3
210.131.52.4/3010.131.52.5 – 10.131.52.610.131.52.7
310.131.52.8/3010.131.52.9 – 10.131.52.1010.131.52.11
410.131.52.12/3010.131.52.13 – 10.131.52.1410.131.52.15
510.131.52.16/3010.131.52.17 – 10.131.52.1810.131.52.19
610.131.52.20/3010.131.52.21 – 10.131.52.2210.131.52.23
710.131.52.24/3010.131.52.25 – 10.131.52.2610.131.52.27
810.131.52.28/3010.131.52.29 – 10.131.52.3010.131.52.31
910.131.52.32/3010.131.52.33 – 10.131.52.3410.131.52.35
1010.131.52.36/3010.131.52.37 – 10.131.52.3810.131.52.39
1110.131.52.40/3010.131.52.41 – 10.131.52.4210.131.52.43
1210.131.52.44/3010.131.52.45 – 10.131.52.4610.131.52.47
1310.131.52.48/3010.131.52.49 – 10.131.52.5010.131.52.51
1410.131.52.52/3010.131.52.53 – 10.131.52.5410.131.52.55
1510.131.52.56/3010.131.52.57 – 10.131.52.5810.131.52.59
1610.131.52.60/3010.131.52.61 – 10.131.52.6210.131.52.63
1710.131.52.64/3010.131.52.65 – 10.131.52.6610.131.52.67
1810.131.52.68/3010.131.52.69 – 10.131.52.7010.131.52.71
1910.131.52.72/3010.131.52.73 – 10.131.52.7410.131.52.75
2010.131.52.76/3010.131.52.77 – 10.131.52.7810.131.52.79
2110.131.52.80/3010.131.52.81 – 10.131.52.8210.131.52.83
2210.131.52.84/3010.131.52.85 – 10.131.52.8610.131.52.87
2310.131.52.88/3010.131.52.89 – 10.131.52.9010.131.52.91
2410.131.52.92/3010.131.52.93 – 10.131.52.9410.131.52.95
2510.131.52.96/3010.131.52.97 – 10.131.52.9810.131.52.99
2610.131.52.100/3010.131.52.101 – 10.131.52.10210.131.52.103
2710.131.52.104/3010.131.52.105 – 10.131.52.10610.131.52.107
2810.131.52.108/3010.131.52.109 – 10.131.52.11010.131.52.111
2910.131.52.112/3010.131.52.113 – 10.131.52.11410.131.52.115
3010.131.52.116/3010.131.52.117 – 10.131.52.11810.131.52.119
3110.131.52.120/3010.131.52.121 – 10.131.52.12210.131.52.123
3210.131.52.124/3010.131.52.125 – 10.131.52.12610.131.52.127
3310.131.52.128/3010.131.52.129 – 10.131.52.13010.131.52.131
3410.131.52.132/3010.131.52.133 – 10.131.52.13410.131.52.135
3510.131.52.136/3010.131.52.137 – 10.131.52.13810.131.52.139
3610.131.52.140/3010.131.52.141 – 10.131.52.14210.131.52.143
3710.131.52.144/3010.131.52.145 – 10.131.52.14610.131.52.147
3810.131.52.148/3010.131.52.149 – 10.131.52.15010.131.52.151
3910.131.52.152/3010.131.52.153 – 10.131.52.15410.131.52.155
4010.131.52.156/3010.131.52.157 – 10.131.52.15810.131.52.159
4110.131.52.160/3010.131.52.161 – 10.131.52.16210.131.52.163
4210.131.52.164/3010.131.52.165 – 10.131.52.16610.131.52.167
4310.131.52.168/3010.131.52.169 – 10.131.52.17010.131.52.171
4410.131.52.172/3010.131.52.173 – 10.131.52.17410.131.52.175
4510.131.52.176/3010.131.52.177 – 10.131.52.17810.131.52.179
4610.131.52.180/3010.131.52.181 – 10.131.52.18210.131.52.183
4710.131.52.184/3010.131.52.185 – 10.131.52.18610.131.52.187
4810.131.52.188/3010.131.52.189 – 10.131.52.19010.131.52.191
4910.131.52.192/3010.131.52.193 – 10.131.52.19410.131.52.195
5010.131.52.196/3010.131.52.197 – 10.131.52.19810.131.52.199
5110.131.52.200/3010.131.52.201 – 10.131.52.20210.131.52.203
5210.131.52.204/3010.131.52.205 – 10.131.52.20610.131.52.207
5310.131.52.208/3010.131.52.209 – 10.131.52.21010.131.52.211
5410.131.52.212/3010.131.52.213 – 10.131.52.21410.131.52.215
5510.131.52.216/3010.131.52.217 – 10.131.52.21810.131.52.219
5610.131.52.220/3010.131.52.221 – 10.131.52.22210.131.52.223
5710.131.52.224/3010.131.52.225 – 10.131.52.22610.131.52.227
5810.131.52.228/3010.131.52.229 – 10.131.52.23010.131.52.231
5910.131.52.232/3010.131.52.233 – 10.131.52.23410.131.52.235
6010.131.52.236/3010.131.52.237 – 10.131.52.23810.131.52.239
6110.131.52.240/3010.131.52.241 – 10.131.52.24210.131.52.243
6210.131.52.244/3010.131.52.245 – 10.131.52.24610.131.52.247
6310.131.52.248/3010.131.52.249 – 10.131.52.25010.131.52.251
6410.131.52.252/3010.131.52.253 – 10.131.52.25410.131.52.255
6510.131.53.0/3010.131.53.1 – 10.131.53.210.131.53.3
6610.131.53.4/3010.131.53.5 – 10.131.53.610.131.53.7
6710.131.53.8/3010.131.53.9 – 10.131.53.1010.131.53.11
6810.131.53.12/3010.131.53.13 – 10.131.53.1410.131.53.15
6910.131.53.16/3010.131.53.17 – 10.131.53.1810.131.53.19
7010.131.53.20/3010.131.53.21 – 10.131.53.2210.131.53.23
7110.131.53.24/3010.131.53.25 – 10.131.53.2610.131.53.27
7210.131.53.28/3010.131.53.29 – 10.131.53.3010.131.53.31
7310.131.53.32/3010.131.53.33 – 10.131.53.3410.131.53.35
7410.131.53.36/3010.131.53.37 – 10.131.53.3810.131.53.39
7510.131.53.40/3010.131.53.41 – 10.131.53.4210.131.53.43
7610.131.53.44/3010.131.53.45 – 10.131.53.4610.131.53.47
7710.131.53.48/3010.131.53.49 – 10.131.53.5010.131.53.51
7810.131.53.52/3010.131.53.53 – 10.131.53.5410.131.53.55
7910.131.53.56/3010.131.53.57 – 10.131.53.5810.131.53.59
8010.131.53.60/3010.131.53.61 – 10.131.53.6210.131.53.63
8110.131.53.64/3010.131.53.65 – 10.131.53.6610.131.53.67
8210.131.53.68/3010.131.53.69 – 10.131.53.7010.131.53.71
8310.131.53.72/3010.131.53.73 – 10.131.53.7410.131.53.75
8410.131.53.76/3010.131.53.77 – 10.131.53.7810.131.53.79
8510.131.53.80/3010.131.53.81 – 10.131.53.8210.131.53.83
8610.131.53.84/3010.131.53.85 – 10.131.53.8610.131.53.87
8710.131.53.88/3010.131.53.89 – 10.131.53.9010.131.53.91
8810.131.53.92/3010.131.53.93 – 10.131.53.9410.131.53.95
8910.131.53.96/3010.131.53.97 – 10.131.53.9810.131.53.99
9010.131.53.100/3010.131.53.101 – 10.131.53.10210.131.53.103
9110.131.53.104/3010.131.53.105 – 10.131.53.10610.131.53.107
9210.131.53.108/3010.131.53.109 – 10.131.53.11010.131.53.111
9310.131.53.112/3010.131.53.113 – 10.131.53.11410.131.53.115
9410.131.53.116/3010.131.53.117 – 10.131.53.11810.131.53.119
9510.131.53.120/3010.131.53.121 – 10.131.53.12210.131.53.123
9610.131.53.124/3010.131.53.125 – 10.131.53.12610.131.53.127
9710.131.53.128/3010.131.53.129 – 10.131.53.13010.131.53.131
9810.131.53.132/3010.131.53.133 – 10.131.53.13410.131.53.135
9910.131.53.136/3010.131.53.137 – 10.131.53.13810.131.53.139
10010.131.53.140/3010.131.53.141 – 10.131.53.14210.131.53.143
10110.131.53.144/3010.131.53.145 – 10.131.53.14610.131.53.147
10210.131.53.148/3010.131.53.149 – 10.131.53.15010.131.53.151
10310.131.53.152/3010.131.53.153 – 10.131.53.15410.131.53.155
10410.131.53.156/3010.131.53.157 – 10.131.53.15810.131.53.159
10510.131.53.160/3010.131.53.161 – 10.131.53.16210.131.53.163
10610.131.53.164/3010.131.53.165 – 10.131.53.16610.131.53.167
10710.131.53.168/3010.131.53.169 – 10.131.53.17010.131.53.171
10810.131.53.172/3010.131.53.173 – 10.131.53.17410.131.53.175
10910.131.53.176/3010.131.53.177 – 10.131.53.17810.131.53.179
11010.131.53.180/3010.131.53.181 – 10.131.53.18210.131.53.183
11110.131.53.184/3010.131.53.185 – 10.131.53.18610.131.53.187
11210.131.53.188/3010.131.53.189 – 10.131.53.19010.131.53.191
11310.131.53.192/3010.131.53.193 – 10.131.53.19410.131.53.195
11410.131.53.196/3010.131.53.197 – 10.131.53.19810.131.53.199
11510.131.53.200/3010.131.53.201 – 10.131.53.20210.131.53.203
11610.131.53.204/3010.131.53.205 – 10.131.53.20610.131.53.207
11710.131.53.208/3010.131.53.209 – 10.131.53.21010.131.53.211
11810.131.53.212/3010.131.53.213 – 10.131.53.21410.131.53.215
11910.131.53.216/3010.131.53.217 – 10.131.53.21810.131.53.219
12010.131.53.220/3010.131.53.221 – 10.131.53.22210.131.53.223
12110.131.53.224/3010.131.53.225 – 10.131.53.22610.131.53.227
12210.131.53.228/3010.131.53.229 – 10.131.53.23010.131.53.231
12310.131.53.232/3010.131.53.233 – 10.131.53.23410.131.53.235
12410.131.53.236/3010.131.53.237 – 10.131.53.23810.131.53.239
12510.131.53.240/3010.131.53.241 – 10.131.53.24210.131.53.243
12610.131.53.244/3010.131.53.245 – 10.131.53.24610.131.53.247
12710.131.53.248/3010.131.53.249 – 10.131.53.25010.131.53.251
12810.131.53.252/3010.131.53.253 – 10.131.53.25410.131.53.255
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 →