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)10.232.248.0/23
network10.232.248.0/23
broadcast10.232.249.255
first host10.232.248.1
last host10.232.249.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.232.248.0/23
address00001010.11101000.11111000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.11101000.11111000.00000000
broadcast00001010.11101000.11111001.11111111
green = network part, grey = host part
hex0x0ae8f800
decimal183040000
reverse dns0.248.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:f800

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.232.248.0/3010.232.248.1 – 10.232.248.210.232.248.3
210.232.248.4/3010.232.248.5 – 10.232.248.610.232.248.7
310.232.248.8/3010.232.248.9 – 10.232.248.1010.232.248.11
410.232.248.12/3010.232.248.13 – 10.232.248.1410.232.248.15
510.232.248.16/3010.232.248.17 – 10.232.248.1810.232.248.19
610.232.248.20/3010.232.248.21 – 10.232.248.2210.232.248.23
710.232.248.24/3010.232.248.25 – 10.232.248.2610.232.248.27
810.232.248.28/3010.232.248.29 – 10.232.248.3010.232.248.31
910.232.248.32/3010.232.248.33 – 10.232.248.3410.232.248.35
1010.232.248.36/3010.232.248.37 – 10.232.248.3810.232.248.39
1110.232.248.40/3010.232.248.41 – 10.232.248.4210.232.248.43
1210.232.248.44/3010.232.248.45 – 10.232.248.4610.232.248.47
1310.232.248.48/3010.232.248.49 – 10.232.248.5010.232.248.51
1410.232.248.52/3010.232.248.53 – 10.232.248.5410.232.248.55
1510.232.248.56/3010.232.248.57 – 10.232.248.5810.232.248.59
1610.232.248.60/3010.232.248.61 – 10.232.248.6210.232.248.63
1710.232.248.64/3010.232.248.65 – 10.232.248.6610.232.248.67
1810.232.248.68/3010.232.248.69 – 10.232.248.7010.232.248.71
1910.232.248.72/3010.232.248.73 – 10.232.248.7410.232.248.75
2010.232.248.76/3010.232.248.77 – 10.232.248.7810.232.248.79
2110.232.248.80/3010.232.248.81 – 10.232.248.8210.232.248.83
2210.232.248.84/3010.232.248.85 – 10.232.248.8610.232.248.87
2310.232.248.88/3010.232.248.89 – 10.232.248.9010.232.248.91
2410.232.248.92/3010.232.248.93 – 10.232.248.9410.232.248.95
2510.232.248.96/3010.232.248.97 – 10.232.248.9810.232.248.99
2610.232.248.100/3010.232.248.101 – 10.232.248.10210.232.248.103
2710.232.248.104/3010.232.248.105 – 10.232.248.10610.232.248.107
2810.232.248.108/3010.232.248.109 – 10.232.248.11010.232.248.111
2910.232.248.112/3010.232.248.113 – 10.232.248.11410.232.248.115
3010.232.248.116/3010.232.248.117 – 10.232.248.11810.232.248.119
3110.232.248.120/3010.232.248.121 – 10.232.248.12210.232.248.123
3210.232.248.124/3010.232.248.125 – 10.232.248.12610.232.248.127
3310.232.248.128/3010.232.248.129 – 10.232.248.13010.232.248.131
3410.232.248.132/3010.232.248.133 – 10.232.248.13410.232.248.135
3510.232.248.136/3010.232.248.137 – 10.232.248.13810.232.248.139
3610.232.248.140/3010.232.248.141 – 10.232.248.14210.232.248.143
3710.232.248.144/3010.232.248.145 – 10.232.248.14610.232.248.147
3810.232.248.148/3010.232.248.149 – 10.232.248.15010.232.248.151
3910.232.248.152/3010.232.248.153 – 10.232.248.15410.232.248.155
4010.232.248.156/3010.232.248.157 – 10.232.248.15810.232.248.159
4110.232.248.160/3010.232.248.161 – 10.232.248.16210.232.248.163
4210.232.248.164/3010.232.248.165 – 10.232.248.16610.232.248.167
4310.232.248.168/3010.232.248.169 – 10.232.248.17010.232.248.171
4410.232.248.172/3010.232.248.173 – 10.232.248.17410.232.248.175
4510.232.248.176/3010.232.248.177 – 10.232.248.17810.232.248.179
4610.232.248.180/3010.232.248.181 – 10.232.248.18210.232.248.183
4710.232.248.184/3010.232.248.185 – 10.232.248.18610.232.248.187
4810.232.248.188/3010.232.248.189 – 10.232.248.19010.232.248.191
4910.232.248.192/3010.232.248.193 – 10.232.248.19410.232.248.195
5010.232.248.196/3010.232.248.197 – 10.232.248.19810.232.248.199
5110.232.248.200/3010.232.248.201 – 10.232.248.20210.232.248.203
5210.232.248.204/3010.232.248.205 – 10.232.248.20610.232.248.207
5310.232.248.208/3010.232.248.209 – 10.232.248.21010.232.248.211
5410.232.248.212/3010.232.248.213 – 10.232.248.21410.232.248.215
5510.232.248.216/3010.232.248.217 – 10.232.248.21810.232.248.219
5610.232.248.220/3010.232.248.221 – 10.232.248.22210.232.248.223
5710.232.248.224/3010.232.248.225 – 10.232.248.22610.232.248.227
5810.232.248.228/3010.232.248.229 – 10.232.248.23010.232.248.231
5910.232.248.232/3010.232.248.233 – 10.232.248.23410.232.248.235
6010.232.248.236/3010.232.248.237 – 10.232.248.23810.232.248.239
6110.232.248.240/3010.232.248.241 – 10.232.248.24210.232.248.243
6210.232.248.244/3010.232.248.245 – 10.232.248.24610.232.248.247
6310.232.248.248/3010.232.248.249 – 10.232.248.25010.232.248.251
6410.232.248.252/3010.232.248.253 – 10.232.248.25410.232.248.255
6510.232.249.0/3010.232.249.1 – 10.232.249.210.232.249.3
6610.232.249.4/3010.232.249.5 – 10.232.249.610.232.249.7
6710.232.249.8/3010.232.249.9 – 10.232.249.1010.232.249.11
6810.232.249.12/3010.232.249.13 – 10.232.249.1410.232.249.15
6910.232.249.16/3010.232.249.17 – 10.232.249.1810.232.249.19
7010.232.249.20/3010.232.249.21 – 10.232.249.2210.232.249.23
7110.232.249.24/3010.232.249.25 – 10.232.249.2610.232.249.27
7210.232.249.28/3010.232.249.29 – 10.232.249.3010.232.249.31
7310.232.249.32/3010.232.249.33 – 10.232.249.3410.232.249.35
7410.232.249.36/3010.232.249.37 – 10.232.249.3810.232.249.39
7510.232.249.40/3010.232.249.41 – 10.232.249.4210.232.249.43
7610.232.249.44/3010.232.249.45 – 10.232.249.4610.232.249.47
7710.232.249.48/3010.232.249.49 – 10.232.249.5010.232.249.51
7810.232.249.52/3010.232.249.53 – 10.232.249.5410.232.249.55
7910.232.249.56/3010.232.249.57 – 10.232.249.5810.232.249.59
8010.232.249.60/3010.232.249.61 – 10.232.249.6210.232.249.63
8110.232.249.64/3010.232.249.65 – 10.232.249.6610.232.249.67
8210.232.249.68/3010.232.249.69 – 10.232.249.7010.232.249.71
8310.232.249.72/3010.232.249.73 – 10.232.249.7410.232.249.75
8410.232.249.76/3010.232.249.77 – 10.232.249.7810.232.249.79
8510.232.249.80/3010.232.249.81 – 10.232.249.8210.232.249.83
8610.232.249.84/3010.232.249.85 – 10.232.249.8610.232.249.87
8710.232.249.88/3010.232.249.89 – 10.232.249.9010.232.249.91
8810.232.249.92/3010.232.249.93 – 10.232.249.9410.232.249.95
8910.232.249.96/3010.232.249.97 – 10.232.249.9810.232.249.99
9010.232.249.100/3010.232.249.101 – 10.232.249.10210.232.249.103
9110.232.249.104/3010.232.249.105 – 10.232.249.10610.232.249.107
9210.232.249.108/3010.232.249.109 – 10.232.249.11010.232.249.111
9310.232.249.112/3010.232.249.113 – 10.232.249.11410.232.249.115
9410.232.249.116/3010.232.249.117 – 10.232.249.11810.232.249.119
9510.232.249.120/3010.232.249.121 – 10.232.249.12210.232.249.123
9610.232.249.124/3010.232.249.125 – 10.232.249.12610.232.249.127
9710.232.249.128/3010.232.249.129 – 10.232.249.13010.232.249.131
9810.232.249.132/3010.232.249.133 – 10.232.249.13410.232.249.135
9910.232.249.136/3010.232.249.137 – 10.232.249.13810.232.249.139
10010.232.249.140/3010.232.249.141 – 10.232.249.14210.232.249.143
10110.232.249.144/3010.232.249.145 – 10.232.249.14610.232.249.147
10210.232.249.148/3010.232.249.149 – 10.232.249.15010.232.249.151
10310.232.249.152/3010.232.249.153 – 10.232.249.15410.232.249.155
10410.232.249.156/3010.232.249.157 – 10.232.249.15810.232.249.159
10510.232.249.160/3010.232.249.161 – 10.232.249.16210.232.249.163
10610.232.249.164/3010.232.249.165 – 10.232.249.16610.232.249.167
10710.232.249.168/3010.232.249.169 – 10.232.249.17010.232.249.171
10810.232.249.172/3010.232.249.173 – 10.232.249.17410.232.249.175
10910.232.249.176/3010.232.249.177 – 10.232.249.17810.232.249.179
11010.232.249.180/3010.232.249.181 – 10.232.249.18210.232.249.183
11110.232.249.184/3010.232.249.185 – 10.232.249.18610.232.249.187
11210.232.249.188/3010.232.249.189 – 10.232.249.19010.232.249.191
11310.232.249.192/3010.232.249.193 – 10.232.249.19410.232.249.195
11410.232.249.196/3010.232.249.197 – 10.232.249.19810.232.249.199
11510.232.249.200/3010.232.249.201 – 10.232.249.20210.232.249.203
11610.232.249.204/3010.232.249.205 – 10.232.249.20610.232.249.207
11710.232.249.208/3010.232.249.209 – 10.232.249.21010.232.249.211
11810.232.249.212/3010.232.249.213 – 10.232.249.21410.232.249.215
11910.232.249.216/3010.232.249.217 – 10.232.249.21810.232.249.219
12010.232.249.220/3010.232.249.221 – 10.232.249.22210.232.249.223
12110.232.249.224/3010.232.249.225 – 10.232.249.22610.232.249.227
12210.232.249.228/3010.232.249.229 – 10.232.249.23010.232.249.231
12310.232.249.232/3010.232.249.233 – 10.232.249.23410.232.249.235
12410.232.249.236/3010.232.249.237 – 10.232.249.23810.232.249.239
12510.232.249.240/3010.232.249.241 – 10.232.249.24210.232.249.243
12610.232.249.244/3010.232.249.245 – 10.232.249.24610.232.249.247
12710.232.249.248/3010.232.249.249 – 10.232.249.25010.232.249.251
12810.232.249.252/3010.232.249.253 – 10.232.249.25410.232.249.255
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 →