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)10.32.76.0/23
network10.32.76.0/23
broadcast10.32.77.255
first host10.32.76.1
last host10.32.77.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.32.76.0/23
address00001010.00100000.01001100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00100000.01001100.00000000
broadcast00001010.00100000.01001101.11111111
green = network part, grey = host part
hex0x0a204c00
decimal169888768
reverse dns0.76.32.10.in-addr.arpa
ipv4-mapped::ffff:a20:4c00

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.32.76.0/3010.32.76.1 – 10.32.76.210.32.76.3
210.32.76.4/3010.32.76.5 – 10.32.76.610.32.76.7
310.32.76.8/3010.32.76.9 – 10.32.76.1010.32.76.11
410.32.76.12/3010.32.76.13 – 10.32.76.1410.32.76.15
510.32.76.16/3010.32.76.17 – 10.32.76.1810.32.76.19
610.32.76.20/3010.32.76.21 – 10.32.76.2210.32.76.23
710.32.76.24/3010.32.76.25 – 10.32.76.2610.32.76.27
810.32.76.28/3010.32.76.29 – 10.32.76.3010.32.76.31
910.32.76.32/3010.32.76.33 – 10.32.76.3410.32.76.35
1010.32.76.36/3010.32.76.37 – 10.32.76.3810.32.76.39
1110.32.76.40/3010.32.76.41 – 10.32.76.4210.32.76.43
1210.32.76.44/3010.32.76.45 – 10.32.76.4610.32.76.47
1310.32.76.48/3010.32.76.49 – 10.32.76.5010.32.76.51
1410.32.76.52/3010.32.76.53 – 10.32.76.5410.32.76.55
1510.32.76.56/3010.32.76.57 – 10.32.76.5810.32.76.59
1610.32.76.60/3010.32.76.61 – 10.32.76.6210.32.76.63
1710.32.76.64/3010.32.76.65 – 10.32.76.6610.32.76.67
1810.32.76.68/3010.32.76.69 – 10.32.76.7010.32.76.71
1910.32.76.72/3010.32.76.73 – 10.32.76.7410.32.76.75
2010.32.76.76/3010.32.76.77 – 10.32.76.7810.32.76.79
2110.32.76.80/3010.32.76.81 – 10.32.76.8210.32.76.83
2210.32.76.84/3010.32.76.85 – 10.32.76.8610.32.76.87
2310.32.76.88/3010.32.76.89 – 10.32.76.9010.32.76.91
2410.32.76.92/3010.32.76.93 – 10.32.76.9410.32.76.95
2510.32.76.96/3010.32.76.97 – 10.32.76.9810.32.76.99
2610.32.76.100/3010.32.76.101 – 10.32.76.10210.32.76.103
2710.32.76.104/3010.32.76.105 – 10.32.76.10610.32.76.107
2810.32.76.108/3010.32.76.109 – 10.32.76.11010.32.76.111
2910.32.76.112/3010.32.76.113 – 10.32.76.11410.32.76.115
3010.32.76.116/3010.32.76.117 – 10.32.76.11810.32.76.119
3110.32.76.120/3010.32.76.121 – 10.32.76.12210.32.76.123
3210.32.76.124/3010.32.76.125 – 10.32.76.12610.32.76.127
3310.32.76.128/3010.32.76.129 – 10.32.76.13010.32.76.131
3410.32.76.132/3010.32.76.133 – 10.32.76.13410.32.76.135
3510.32.76.136/3010.32.76.137 – 10.32.76.13810.32.76.139
3610.32.76.140/3010.32.76.141 – 10.32.76.14210.32.76.143
3710.32.76.144/3010.32.76.145 – 10.32.76.14610.32.76.147
3810.32.76.148/3010.32.76.149 – 10.32.76.15010.32.76.151
3910.32.76.152/3010.32.76.153 – 10.32.76.15410.32.76.155
4010.32.76.156/3010.32.76.157 – 10.32.76.15810.32.76.159
4110.32.76.160/3010.32.76.161 – 10.32.76.16210.32.76.163
4210.32.76.164/3010.32.76.165 – 10.32.76.16610.32.76.167
4310.32.76.168/3010.32.76.169 – 10.32.76.17010.32.76.171
4410.32.76.172/3010.32.76.173 – 10.32.76.17410.32.76.175
4510.32.76.176/3010.32.76.177 – 10.32.76.17810.32.76.179
4610.32.76.180/3010.32.76.181 – 10.32.76.18210.32.76.183
4710.32.76.184/3010.32.76.185 – 10.32.76.18610.32.76.187
4810.32.76.188/3010.32.76.189 – 10.32.76.19010.32.76.191
4910.32.76.192/3010.32.76.193 – 10.32.76.19410.32.76.195
5010.32.76.196/3010.32.76.197 – 10.32.76.19810.32.76.199
5110.32.76.200/3010.32.76.201 – 10.32.76.20210.32.76.203
5210.32.76.204/3010.32.76.205 – 10.32.76.20610.32.76.207
5310.32.76.208/3010.32.76.209 – 10.32.76.21010.32.76.211
5410.32.76.212/3010.32.76.213 – 10.32.76.21410.32.76.215
5510.32.76.216/3010.32.76.217 – 10.32.76.21810.32.76.219
5610.32.76.220/3010.32.76.221 – 10.32.76.22210.32.76.223
5710.32.76.224/3010.32.76.225 – 10.32.76.22610.32.76.227
5810.32.76.228/3010.32.76.229 – 10.32.76.23010.32.76.231
5910.32.76.232/3010.32.76.233 – 10.32.76.23410.32.76.235
6010.32.76.236/3010.32.76.237 – 10.32.76.23810.32.76.239
6110.32.76.240/3010.32.76.241 – 10.32.76.24210.32.76.243
6210.32.76.244/3010.32.76.245 – 10.32.76.24610.32.76.247
6310.32.76.248/3010.32.76.249 – 10.32.76.25010.32.76.251
6410.32.76.252/3010.32.76.253 – 10.32.76.25410.32.76.255
6510.32.77.0/3010.32.77.1 – 10.32.77.210.32.77.3
6610.32.77.4/3010.32.77.5 – 10.32.77.610.32.77.7
6710.32.77.8/3010.32.77.9 – 10.32.77.1010.32.77.11
6810.32.77.12/3010.32.77.13 – 10.32.77.1410.32.77.15
6910.32.77.16/3010.32.77.17 – 10.32.77.1810.32.77.19
7010.32.77.20/3010.32.77.21 – 10.32.77.2210.32.77.23
7110.32.77.24/3010.32.77.25 – 10.32.77.2610.32.77.27
7210.32.77.28/3010.32.77.29 – 10.32.77.3010.32.77.31
7310.32.77.32/3010.32.77.33 – 10.32.77.3410.32.77.35
7410.32.77.36/3010.32.77.37 – 10.32.77.3810.32.77.39
7510.32.77.40/3010.32.77.41 – 10.32.77.4210.32.77.43
7610.32.77.44/3010.32.77.45 – 10.32.77.4610.32.77.47
7710.32.77.48/3010.32.77.49 – 10.32.77.5010.32.77.51
7810.32.77.52/3010.32.77.53 – 10.32.77.5410.32.77.55
7910.32.77.56/3010.32.77.57 – 10.32.77.5810.32.77.59
8010.32.77.60/3010.32.77.61 – 10.32.77.6210.32.77.63
8110.32.77.64/3010.32.77.65 – 10.32.77.6610.32.77.67
8210.32.77.68/3010.32.77.69 – 10.32.77.7010.32.77.71
8310.32.77.72/3010.32.77.73 – 10.32.77.7410.32.77.75
8410.32.77.76/3010.32.77.77 – 10.32.77.7810.32.77.79
8510.32.77.80/3010.32.77.81 – 10.32.77.8210.32.77.83
8610.32.77.84/3010.32.77.85 – 10.32.77.8610.32.77.87
8710.32.77.88/3010.32.77.89 – 10.32.77.9010.32.77.91
8810.32.77.92/3010.32.77.93 – 10.32.77.9410.32.77.95
8910.32.77.96/3010.32.77.97 – 10.32.77.9810.32.77.99
9010.32.77.100/3010.32.77.101 – 10.32.77.10210.32.77.103
9110.32.77.104/3010.32.77.105 – 10.32.77.10610.32.77.107
9210.32.77.108/3010.32.77.109 – 10.32.77.11010.32.77.111
9310.32.77.112/3010.32.77.113 – 10.32.77.11410.32.77.115
9410.32.77.116/3010.32.77.117 – 10.32.77.11810.32.77.119
9510.32.77.120/3010.32.77.121 – 10.32.77.12210.32.77.123
9610.32.77.124/3010.32.77.125 – 10.32.77.12610.32.77.127
9710.32.77.128/3010.32.77.129 – 10.32.77.13010.32.77.131
9810.32.77.132/3010.32.77.133 – 10.32.77.13410.32.77.135
9910.32.77.136/3010.32.77.137 – 10.32.77.13810.32.77.139
10010.32.77.140/3010.32.77.141 – 10.32.77.14210.32.77.143
10110.32.77.144/3010.32.77.145 – 10.32.77.14610.32.77.147
10210.32.77.148/3010.32.77.149 – 10.32.77.15010.32.77.151
10310.32.77.152/3010.32.77.153 – 10.32.77.15410.32.77.155
10410.32.77.156/3010.32.77.157 – 10.32.77.15810.32.77.159
10510.32.77.160/3010.32.77.161 – 10.32.77.16210.32.77.163
10610.32.77.164/3010.32.77.165 – 10.32.77.16610.32.77.167
10710.32.77.168/3010.32.77.169 – 10.32.77.17010.32.77.171
10810.32.77.172/3010.32.77.173 – 10.32.77.17410.32.77.175
10910.32.77.176/3010.32.77.177 – 10.32.77.17810.32.77.179
11010.32.77.180/3010.32.77.181 – 10.32.77.18210.32.77.183
11110.32.77.184/3010.32.77.185 – 10.32.77.18610.32.77.187
11210.32.77.188/3010.32.77.189 – 10.32.77.19010.32.77.191
11310.32.77.192/3010.32.77.193 – 10.32.77.19410.32.77.195
11410.32.77.196/3010.32.77.197 – 10.32.77.19810.32.77.199
11510.32.77.200/3010.32.77.201 – 10.32.77.20210.32.77.203
11610.32.77.204/3010.32.77.205 – 10.32.77.20610.32.77.207
11710.32.77.208/3010.32.77.209 – 10.32.77.21010.32.77.211
11810.32.77.212/3010.32.77.213 – 10.32.77.21410.32.77.215
11910.32.77.216/3010.32.77.217 – 10.32.77.21810.32.77.219
12010.32.77.220/3010.32.77.221 – 10.32.77.22210.32.77.223
12110.32.77.224/3010.32.77.225 – 10.32.77.22610.32.77.227
12210.32.77.228/3010.32.77.229 – 10.32.77.23010.32.77.231
12310.32.77.232/3010.32.77.233 – 10.32.77.23410.32.77.235
12410.32.77.236/3010.32.77.237 – 10.32.77.23810.32.77.239
12510.32.77.240/3010.32.77.241 – 10.32.77.24210.32.77.243
12610.32.77.244/3010.32.77.245 – 10.32.77.24610.32.77.247
12710.32.77.248/3010.32.77.249 – 10.32.77.25010.32.77.251
12810.32.77.252/3010.32.77.253 – 10.32.77.25410.32.77.255
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 →