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)10.3.110.0/23
network10.3.110.0/23
broadcast10.3.111.255
first host10.3.110.1
last host10.3.111.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.3.110.0/23
address00001010.00000011.01101110.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000011.01101110.00000000
broadcast00001010.00000011.01101111.11111111
green = network part, grey = host part
hex0x0a036e00
decimal167996928
reverse dns0.110.3.10.in-addr.arpa
ipv4-mapped::ffff:a03:6e00

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.3.110.0/3010.3.110.1 – 10.3.110.210.3.110.3
210.3.110.4/3010.3.110.5 – 10.3.110.610.3.110.7
310.3.110.8/3010.3.110.9 – 10.3.110.1010.3.110.11
410.3.110.12/3010.3.110.13 – 10.3.110.1410.3.110.15
510.3.110.16/3010.3.110.17 – 10.3.110.1810.3.110.19
610.3.110.20/3010.3.110.21 – 10.3.110.2210.3.110.23
710.3.110.24/3010.3.110.25 – 10.3.110.2610.3.110.27
810.3.110.28/3010.3.110.29 – 10.3.110.3010.3.110.31
910.3.110.32/3010.3.110.33 – 10.3.110.3410.3.110.35
1010.3.110.36/3010.3.110.37 – 10.3.110.3810.3.110.39
1110.3.110.40/3010.3.110.41 – 10.3.110.4210.3.110.43
1210.3.110.44/3010.3.110.45 – 10.3.110.4610.3.110.47
1310.3.110.48/3010.3.110.49 – 10.3.110.5010.3.110.51
1410.3.110.52/3010.3.110.53 – 10.3.110.5410.3.110.55
1510.3.110.56/3010.3.110.57 – 10.3.110.5810.3.110.59
1610.3.110.60/3010.3.110.61 – 10.3.110.6210.3.110.63
1710.3.110.64/3010.3.110.65 – 10.3.110.6610.3.110.67
1810.3.110.68/3010.3.110.69 – 10.3.110.7010.3.110.71
1910.3.110.72/3010.3.110.73 – 10.3.110.7410.3.110.75
2010.3.110.76/3010.3.110.77 – 10.3.110.7810.3.110.79
2110.3.110.80/3010.3.110.81 – 10.3.110.8210.3.110.83
2210.3.110.84/3010.3.110.85 – 10.3.110.8610.3.110.87
2310.3.110.88/3010.3.110.89 – 10.3.110.9010.3.110.91
2410.3.110.92/3010.3.110.93 – 10.3.110.9410.3.110.95
2510.3.110.96/3010.3.110.97 – 10.3.110.9810.3.110.99
2610.3.110.100/3010.3.110.101 – 10.3.110.10210.3.110.103
2710.3.110.104/3010.3.110.105 – 10.3.110.10610.3.110.107
2810.3.110.108/3010.3.110.109 – 10.3.110.11010.3.110.111
2910.3.110.112/3010.3.110.113 – 10.3.110.11410.3.110.115
3010.3.110.116/3010.3.110.117 – 10.3.110.11810.3.110.119
3110.3.110.120/3010.3.110.121 – 10.3.110.12210.3.110.123
3210.3.110.124/3010.3.110.125 – 10.3.110.12610.3.110.127
3310.3.110.128/3010.3.110.129 – 10.3.110.13010.3.110.131
3410.3.110.132/3010.3.110.133 – 10.3.110.13410.3.110.135
3510.3.110.136/3010.3.110.137 – 10.3.110.13810.3.110.139
3610.3.110.140/3010.3.110.141 – 10.3.110.14210.3.110.143
3710.3.110.144/3010.3.110.145 – 10.3.110.14610.3.110.147
3810.3.110.148/3010.3.110.149 – 10.3.110.15010.3.110.151
3910.3.110.152/3010.3.110.153 – 10.3.110.15410.3.110.155
4010.3.110.156/3010.3.110.157 – 10.3.110.15810.3.110.159
4110.3.110.160/3010.3.110.161 – 10.3.110.16210.3.110.163
4210.3.110.164/3010.3.110.165 – 10.3.110.16610.3.110.167
4310.3.110.168/3010.3.110.169 – 10.3.110.17010.3.110.171
4410.3.110.172/3010.3.110.173 – 10.3.110.17410.3.110.175
4510.3.110.176/3010.3.110.177 – 10.3.110.17810.3.110.179
4610.3.110.180/3010.3.110.181 – 10.3.110.18210.3.110.183
4710.3.110.184/3010.3.110.185 – 10.3.110.18610.3.110.187
4810.3.110.188/3010.3.110.189 – 10.3.110.19010.3.110.191
4910.3.110.192/3010.3.110.193 – 10.3.110.19410.3.110.195
5010.3.110.196/3010.3.110.197 – 10.3.110.19810.3.110.199
5110.3.110.200/3010.3.110.201 – 10.3.110.20210.3.110.203
5210.3.110.204/3010.3.110.205 – 10.3.110.20610.3.110.207
5310.3.110.208/3010.3.110.209 – 10.3.110.21010.3.110.211
5410.3.110.212/3010.3.110.213 – 10.3.110.21410.3.110.215
5510.3.110.216/3010.3.110.217 – 10.3.110.21810.3.110.219
5610.3.110.220/3010.3.110.221 – 10.3.110.22210.3.110.223
5710.3.110.224/3010.3.110.225 – 10.3.110.22610.3.110.227
5810.3.110.228/3010.3.110.229 – 10.3.110.23010.3.110.231
5910.3.110.232/3010.3.110.233 – 10.3.110.23410.3.110.235
6010.3.110.236/3010.3.110.237 – 10.3.110.23810.3.110.239
6110.3.110.240/3010.3.110.241 – 10.3.110.24210.3.110.243
6210.3.110.244/3010.3.110.245 – 10.3.110.24610.3.110.247
6310.3.110.248/3010.3.110.249 – 10.3.110.25010.3.110.251
6410.3.110.252/3010.3.110.253 – 10.3.110.25410.3.110.255
6510.3.111.0/3010.3.111.1 – 10.3.111.210.3.111.3
6610.3.111.4/3010.3.111.5 – 10.3.111.610.3.111.7
6710.3.111.8/3010.3.111.9 – 10.3.111.1010.3.111.11
6810.3.111.12/3010.3.111.13 – 10.3.111.1410.3.111.15
6910.3.111.16/3010.3.111.17 – 10.3.111.1810.3.111.19
7010.3.111.20/3010.3.111.21 – 10.3.111.2210.3.111.23
7110.3.111.24/3010.3.111.25 – 10.3.111.2610.3.111.27
7210.3.111.28/3010.3.111.29 – 10.3.111.3010.3.111.31
7310.3.111.32/3010.3.111.33 – 10.3.111.3410.3.111.35
7410.3.111.36/3010.3.111.37 – 10.3.111.3810.3.111.39
7510.3.111.40/3010.3.111.41 – 10.3.111.4210.3.111.43
7610.3.111.44/3010.3.111.45 – 10.3.111.4610.3.111.47
7710.3.111.48/3010.3.111.49 – 10.3.111.5010.3.111.51
7810.3.111.52/3010.3.111.53 – 10.3.111.5410.3.111.55
7910.3.111.56/3010.3.111.57 – 10.3.111.5810.3.111.59
8010.3.111.60/3010.3.111.61 – 10.3.111.6210.3.111.63
8110.3.111.64/3010.3.111.65 – 10.3.111.6610.3.111.67
8210.3.111.68/3010.3.111.69 – 10.3.111.7010.3.111.71
8310.3.111.72/3010.3.111.73 – 10.3.111.7410.3.111.75
8410.3.111.76/3010.3.111.77 – 10.3.111.7810.3.111.79
8510.3.111.80/3010.3.111.81 – 10.3.111.8210.3.111.83
8610.3.111.84/3010.3.111.85 – 10.3.111.8610.3.111.87
8710.3.111.88/3010.3.111.89 – 10.3.111.9010.3.111.91
8810.3.111.92/3010.3.111.93 – 10.3.111.9410.3.111.95
8910.3.111.96/3010.3.111.97 – 10.3.111.9810.3.111.99
9010.3.111.100/3010.3.111.101 – 10.3.111.10210.3.111.103
9110.3.111.104/3010.3.111.105 – 10.3.111.10610.3.111.107
9210.3.111.108/3010.3.111.109 – 10.3.111.11010.3.111.111
9310.3.111.112/3010.3.111.113 – 10.3.111.11410.3.111.115
9410.3.111.116/3010.3.111.117 – 10.3.111.11810.3.111.119
9510.3.111.120/3010.3.111.121 – 10.3.111.12210.3.111.123
9610.3.111.124/3010.3.111.125 – 10.3.111.12610.3.111.127
9710.3.111.128/3010.3.111.129 – 10.3.111.13010.3.111.131
9810.3.111.132/3010.3.111.133 – 10.3.111.13410.3.111.135
9910.3.111.136/3010.3.111.137 – 10.3.111.13810.3.111.139
10010.3.111.140/3010.3.111.141 – 10.3.111.14210.3.111.143
10110.3.111.144/3010.3.111.145 – 10.3.111.14610.3.111.147
10210.3.111.148/3010.3.111.149 – 10.3.111.15010.3.111.151
10310.3.111.152/3010.3.111.153 – 10.3.111.15410.3.111.155
10410.3.111.156/3010.3.111.157 – 10.3.111.15810.3.111.159
10510.3.111.160/3010.3.111.161 – 10.3.111.16210.3.111.163
10610.3.111.164/3010.3.111.165 – 10.3.111.16610.3.111.167
10710.3.111.168/3010.3.111.169 – 10.3.111.17010.3.111.171
10810.3.111.172/3010.3.111.173 – 10.3.111.17410.3.111.175
10910.3.111.176/3010.3.111.177 – 10.3.111.17810.3.111.179
11010.3.111.180/3010.3.111.181 – 10.3.111.18210.3.111.183
11110.3.111.184/3010.3.111.185 – 10.3.111.18610.3.111.187
11210.3.111.188/3010.3.111.189 – 10.3.111.19010.3.111.191
11310.3.111.192/3010.3.111.193 – 10.3.111.19410.3.111.195
11410.3.111.196/3010.3.111.197 – 10.3.111.19810.3.111.199
11510.3.111.200/3010.3.111.201 – 10.3.111.20210.3.111.203
11610.3.111.204/3010.3.111.205 – 10.3.111.20610.3.111.207
11710.3.111.208/3010.3.111.209 – 10.3.111.21010.3.111.211
11810.3.111.212/3010.3.111.213 – 10.3.111.21410.3.111.215
11910.3.111.216/3010.3.111.217 – 10.3.111.21810.3.111.219
12010.3.111.220/3010.3.111.221 – 10.3.111.22210.3.111.223
12110.3.111.224/3010.3.111.225 – 10.3.111.22610.3.111.227
12210.3.111.228/3010.3.111.229 – 10.3.111.23010.3.111.231
12310.3.111.232/3010.3.111.233 – 10.3.111.23410.3.111.235
12410.3.111.236/3010.3.111.237 – 10.3.111.23810.3.111.239
12510.3.111.240/3010.3.111.241 – 10.3.111.24210.3.111.243
12610.3.111.244/3010.3.111.245 – 10.3.111.24610.3.111.247
12710.3.111.248/3010.3.111.249 – 10.3.111.25010.3.111.251
12810.3.111.252/3010.3.111.253 – 10.3.111.25410.3.111.255
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 →