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)10.7.192.0/23
network10.7.192.0/23
broadcast10.7.193.255
first host10.7.192.1
last host10.7.193.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.7.192.0/23
address00001010.00000111.11000000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000111.11000000.00000000
broadcast00001010.00000111.11000001.11111111
green = network part, grey = host part
hex0x0a07c000
decimal168280064
reverse dns0.192.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:c000

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.7.192.0/3010.7.192.1 – 10.7.192.210.7.192.3
210.7.192.4/3010.7.192.5 – 10.7.192.610.7.192.7
310.7.192.8/3010.7.192.9 – 10.7.192.1010.7.192.11
410.7.192.12/3010.7.192.13 – 10.7.192.1410.7.192.15
510.7.192.16/3010.7.192.17 – 10.7.192.1810.7.192.19
610.7.192.20/3010.7.192.21 – 10.7.192.2210.7.192.23
710.7.192.24/3010.7.192.25 – 10.7.192.2610.7.192.27
810.7.192.28/3010.7.192.29 – 10.7.192.3010.7.192.31
910.7.192.32/3010.7.192.33 – 10.7.192.3410.7.192.35
1010.7.192.36/3010.7.192.37 – 10.7.192.3810.7.192.39
1110.7.192.40/3010.7.192.41 – 10.7.192.4210.7.192.43
1210.7.192.44/3010.7.192.45 – 10.7.192.4610.7.192.47
1310.7.192.48/3010.7.192.49 – 10.7.192.5010.7.192.51
1410.7.192.52/3010.7.192.53 – 10.7.192.5410.7.192.55
1510.7.192.56/3010.7.192.57 – 10.7.192.5810.7.192.59
1610.7.192.60/3010.7.192.61 – 10.7.192.6210.7.192.63
1710.7.192.64/3010.7.192.65 – 10.7.192.6610.7.192.67
1810.7.192.68/3010.7.192.69 – 10.7.192.7010.7.192.71
1910.7.192.72/3010.7.192.73 – 10.7.192.7410.7.192.75
2010.7.192.76/3010.7.192.77 – 10.7.192.7810.7.192.79
2110.7.192.80/3010.7.192.81 – 10.7.192.8210.7.192.83
2210.7.192.84/3010.7.192.85 – 10.7.192.8610.7.192.87
2310.7.192.88/3010.7.192.89 – 10.7.192.9010.7.192.91
2410.7.192.92/3010.7.192.93 – 10.7.192.9410.7.192.95
2510.7.192.96/3010.7.192.97 – 10.7.192.9810.7.192.99
2610.7.192.100/3010.7.192.101 – 10.7.192.10210.7.192.103
2710.7.192.104/3010.7.192.105 – 10.7.192.10610.7.192.107
2810.7.192.108/3010.7.192.109 – 10.7.192.11010.7.192.111
2910.7.192.112/3010.7.192.113 – 10.7.192.11410.7.192.115
3010.7.192.116/3010.7.192.117 – 10.7.192.11810.7.192.119
3110.7.192.120/3010.7.192.121 – 10.7.192.12210.7.192.123
3210.7.192.124/3010.7.192.125 – 10.7.192.12610.7.192.127
3310.7.192.128/3010.7.192.129 – 10.7.192.13010.7.192.131
3410.7.192.132/3010.7.192.133 – 10.7.192.13410.7.192.135
3510.7.192.136/3010.7.192.137 – 10.7.192.13810.7.192.139
3610.7.192.140/3010.7.192.141 – 10.7.192.14210.7.192.143
3710.7.192.144/3010.7.192.145 – 10.7.192.14610.7.192.147
3810.7.192.148/3010.7.192.149 – 10.7.192.15010.7.192.151
3910.7.192.152/3010.7.192.153 – 10.7.192.15410.7.192.155
4010.7.192.156/3010.7.192.157 – 10.7.192.15810.7.192.159
4110.7.192.160/3010.7.192.161 – 10.7.192.16210.7.192.163
4210.7.192.164/3010.7.192.165 – 10.7.192.16610.7.192.167
4310.7.192.168/3010.7.192.169 – 10.7.192.17010.7.192.171
4410.7.192.172/3010.7.192.173 – 10.7.192.17410.7.192.175
4510.7.192.176/3010.7.192.177 – 10.7.192.17810.7.192.179
4610.7.192.180/3010.7.192.181 – 10.7.192.18210.7.192.183
4710.7.192.184/3010.7.192.185 – 10.7.192.18610.7.192.187
4810.7.192.188/3010.7.192.189 – 10.7.192.19010.7.192.191
4910.7.192.192/3010.7.192.193 – 10.7.192.19410.7.192.195
5010.7.192.196/3010.7.192.197 – 10.7.192.19810.7.192.199
5110.7.192.200/3010.7.192.201 – 10.7.192.20210.7.192.203
5210.7.192.204/3010.7.192.205 – 10.7.192.20610.7.192.207
5310.7.192.208/3010.7.192.209 – 10.7.192.21010.7.192.211
5410.7.192.212/3010.7.192.213 – 10.7.192.21410.7.192.215
5510.7.192.216/3010.7.192.217 – 10.7.192.21810.7.192.219
5610.7.192.220/3010.7.192.221 – 10.7.192.22210.7.192.223
5710.7.192.224/3010.7.192.225 – 10.7.192.22610.7.192.227
5810.7.192.228/3010.7.192.229 – 10.7.192.23010.7.192.231
5910.7.192.232/3010.7.192.233 – 10.7.192.23410.7.192.235
6010.7.192.236/3010.7.192.237 – 10.7.192.23810.7.192.239
6110.7.192.240/3010.7.192.241 – 10.7.192.24210.7.192.243
6210.7.192.244/3010.7.192.245 – 10.7.192.24610.7.192.247
6310.7.192.248/3010.7.192.249 – 10.7.192.25010.7.192.251
6410.7.192.252/3010.7.192.253 – 10.7.192.25410.7.192.255
6510.7.193.0/3010.7.193.1 – 10.7.193.210.7.193.3
6610.7.193.4/3010.7.193.5 – 10.7.193.610.7.193.7
6710.7.193.8/3010.7.193.9 – 10.7.193.1010.7.193.11
6810.7.193.12/3010.7.193.13 – 10.7.193.1410.7.193.15
6910.7.193.16/3010.7.193.17 – 10.7.193.1810.7.193.19
7010.7.193.20/3010.7.193.21 – 10.7.193.2210.7.193.23
7110.7.193.24/3010.7.193.25 – 10.7.193.2610.7.193.27
7210.7.193.28/3010.7.193.29 – 10.7.193.3010.7.193.31
7310.7.193.32/3010.7.193.33 – 10.7.193.3410.7.193.35
7410.7.193.36/3010.7.193.37 – 10.7.193.3810.7.193.39
7510.7.193.40/3010.7.193.41 – 10.7.193.4210.7.193.43
7610.7.193.44/3010.7.193.45 – 10.7.193.4610.7.193.47
7710.7.193.48/3010.7.193.49 – 10.7.193.5010.7.193.51
7810.7.193.52/3010.7.193.53 – 10.7.193.5410.7.193.55
7910.7.193.56/3010.7.193.57 – 10.7.193.5810.7.193.59
8010.7.193.60/3010.7.193.61 – 10.7.193.6210.7.193.63
8110.7.193.64/3010.7.193.65 – 10.7.193.6610.7.193.67
8210.7.193.68/3010.7.193.69 – 10.7.193.7010.7.193.71
8310.7.193.72/3010.7.193.73 – 10.7.193.7410.7.193.75
8410.7.193.76/3010.7.193.77 – 10.7.193.7810.7.193.79
8510.7.193.80/3010.7.193.81 – 10.7.193.8210.7.193.83
8610.7.193.84/3010.7.193.85 – 10.7.193.8610.7.193.87
8710.7.193.88/3010.7.193.89 – 10.7.193.9010.7.193.91
8810.7.193.92/3010.7.193.93 – 10.7.193.9410.7.193.95
8910.7.193.96/3010.7.193.97 – 10.7.193.9810.7.193.99
9010.7.193.100/3010.7.193.101 – 10.7.193.10210.7.193.103
9110.7.193.104/3010.7.193.105 – 10.7.193.10610.7.193.107
9210.7.193.108/3010.7.193.109 – 10.7.193.11010.7.193.111
9310.7.193.112/3010.7.193.113 – 10.7.193.11410.7.193.115
9410.7.193.116/3010.7.193.117 – 10.7.193.11810.7.193.119
9510.7.193.120/3010.7.193.121 – 10.7.193.12210.7.193.123
9610.7.193.124/3010.7.193.125 – 10.7.193.12610.7.193.127
9710.7.193.128/3010.7.193.129 – 10.7.193.13010.7.193.131
9810.7.193.132/3010.7.193.133 – 10.7.193.13410.7.193.135
9910.7.193.136/3010.7.193.137 – 10.7.193.13810.7.193.139
10010.7.193.140/3010.7.193.141 – 10.7.193.14210.7.193.143
10110.7.193.144/3010.7.193.145 – 10.7.193.14610.7.193.147
10210.7.193.148/3010.7.193.149 – 10.7.193.15010.7.193.151
10310.7.193.152/3010.7.193.153 – 10.7.193.15410.7.193.155
10410.7.193.156/3010.7.193.157 – 10.7.193.15810.7.193.159
10510.7.193.160/3010.7.193.161 – 10.7.193.16210.7.193.163
10610.7.193.164/3010.7.193.165 – 10.7.193.16610.7.193.167
10710.7.193.168/3010.7.193.169 – 10.7.193.17010.7.193.171
10810.7.193.172/3010.7.193.173 – 10.7.193.17410.7.193.175
10910.7.193.176/3010.7.193.177 – 10.7.193.17810.7.193.179
11010.7.193.180/3010.7.193.181 – 10.7.193.18210.7.193.183
11110.7.193.184/3010.7.193.185 – 10.7.193.18610.7.193.187
11210.7.193.188/3010.7.193.189 – 10.7.193.19010.7.193.191
11310.7.193.192/3010.7.193.193 – 10.7.193.19410.7.193.195
11410.7.193.196/3010.7.193.197 – 10.7.193.19810.7.193.199
11510.7.193.200/3010.7.193.201 – 10.7.193.20210.7.193.203
11610.7.193.204/3010.7.193.205 – 10.7.193.20610.7.193.207
11710.7.193.208/3010.7.193.209 – 10.7.193.21010.7.193.211
11810.7.193.212/3010.7.193.213 – 10.7.193.21410.7.193.215
11910.7.193.216/3010.7.193.217 – 10.7.193.21810.7.193.219
12010.7.193.220/3010.7.193.221 – 10.7.193.22210.7.193.223
12110.7.193.224/3010.7.193.225 – 10.7.193.22610.7.193.227
12210.7.193.228/3010.7.193.229 – 10.7.193.23010.7.193.231
12310.7.193.232/3010.7.193.233 – 10.7.193.23410.7.193.235
12410.7.193.236/3010.7.193.237 – 10.7.193.23810.7.193.239
12510.7.193.240/3010.7.193.241 – 10.7.193.24210.7.193.243
12610.7.193.244/3010.7.193.245 – 10.7.193.24610.7.193.247
12710.7.193.248/3010.7.193.249 – 10.7.193.25010.7.193.251
12810.7.193.252/3010.7.193.253 – 10.7.193.25410.7.193.255
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 →