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)10.78.146.0/23
network10.78.146.0/23
broadcast10.78.147.255
first host10.78.146.1
last host10.78.147.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.78.146.0/23
address00001010.01001110.10010010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01001110.10010010.00000000
broadcast00001010.01001110.10010011.11111111
green = network part, grey = host part
hex0x0a4e9200
decimal172921344
reverse dns0.146.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:9200

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.146.0/3010.78.146.1 – 10.78.146.210.78.146.3
210.78.146.4/3010.78.146.5 – 10.78.146.610.78.146.7
310.78.146.8/3010.78.146.9 – 10.78.146.1010.78.146.11
410.78.146.12/3010.78.146.13 – 10.78.146.1410.78.146.15
510.78.146.16/3010.78.146.17 – 10.78.146.1810.78.146.19
610.78.146.20/3010.78.146.21 – 10.78.146.2210.78.146.23
710.78.146.24/3010.78.146.25 – 10.78.146.2610.78.146.27
810.78.146.28/3010.78.146.29 – 10.78.146.3010.78.146.31
910.78.146.32/3010.78.146.33 – 10.78.146.3410.78.146.35
1010.78.146.36/3010.78.146.37 – 10.78.146.3810.78.146.39
1110.78.146.40/3010.78.146.41 – 10.78.146.4210.78.146.43
1210.78.146.44/3010.78.146.45 – 10.78.146.4610.78.146.47
1310.78.146.48/3010.78.146.49 – 10.78.146.5010.78.146.51
1410.78.146.52/3010.78.146.53 – 10.78.146.5410.78.146.55
1510.78.146.56/3010.78.146.57 – 10.78.146.5810.78.146.59
1610.78.146.60/3010.78.146.61 – 10.78.146.6210.78.146.63
1710.78.146.64/3010.78.146.65 – 10.78.146.6610.78.146.67
1810.78.146.68/3010.78.146.69 – 10.78.146.7010.78.146.71
1910.78.146.72/3010.78.146.73 – 10.78.146.7410.78.146.75
2010.78.146.76/3010.78.146.77 – 10.78.146.7810.78.146.79
2110.78.146.80/3010.78.146.81 – 10.78.146.8210.78.146.83
2210.78.146.84/3010.78.146.85 – 10.78.146.8610.78.146.87
2310.78.146.88/3010.78.146.89 – 10.78.146.9010.78.146.91
2410.78.146.92/3010.78.146.93 – 10.78.146.9410.78.146.95
2510.78.146.96/3010.78.146.97 – 10.78.146.9810.78.146.99
2610.78.146.100/3010.78.146.101 – 10.78.146.10210.78.146.103
2710.78.146.104/3010.78.146.105 – 10.78.146.10610.78.146.107
2810.78.146.108/3010.78.146.109 – 10.78.146.11010.78.146.111
2910.78.146.112/3010.78.146.113 – 10.78.146.11410.78.146.115
3010.78.146.116/3010.78.146.117 – 10.78.146.11810.78.146.119
3110.78.146.120/3010.78.146.121 – 10.78.146.12210.78.146.123
3210.78.146.124/3010.78.146.125 – 10.78.146.12610.78.146.127
3310.78.146.128/3010.78.146.129 – 10.78.146.13010.78.146.131
3410.78.146.132/3010.78.146.133 – 10.78.146.13410.78.146.135
3510.78.146.136/3010.78.146.137 – 10.78.146.13810.78.146.139
3610.78.146.140/3010.78.146.141 – 10.78.146.14210.78.146.143
3710.78.146.144/3010.78.146.145 – 10.78.146.14610.78.146.147
3810.78.146.148/3010.78.146.149 – 10.78.146.15010.78.146.151
3910.78.146.152/3010.78.146.153 – 10.78.146.15410.78.146.155
4010.78.146.156/3010.78.146.157 – 10.78.146.15810.78.146.159
4110.78.146.160/3010.78.146.161 – 10.78.146.16210.78.146.163
4210.78.146.164/3010.78.146.165 – 10.78.146.16610.78.146.167
4310.78.146.168/3010.78.146.169 – 10.78.146.17010.78.146.171
4410.78.146.172/3010.78.146.173 – 10.78.146.17410.78.146.175
4510.78.146.176/3010.78.146.177 – 10.78.146.17810.78.146.179
4610.78.146.180/3010.78.146.181 – 10.78.146.18210.78.146.183
4710.78.146.184/3010.78.146.185 – 10.78.146.18610.78.146.187
4810.78.146.188/3010.78.146.189 – 10.78.146.19010.78.146.191
4910.78.146.192/3010.78.146.193 – 10.78.146.19410.78.146.195
5010.78.146.196/3010.78.146.197 – 10.78.146.19810.78.146.199
5110.78.146.200/3010.78.146.201 – 10.78.146.20210.78.146.203
5210.78.146.204/3010.78.146.205 – 10.78.146.20610.78.146.207
5310.78.146.208/3010.78.146.209 – 10.78.146.21010.78.146.211
5410.78.146.212/3010.78.146.213 – 10.78.146.21410.78.146.215
5510.78.146.216/3010.78.146.217 – 10.78.146.21810.78.146.219
5610.78.146.220/3010.78.146.221 – 10.78.146.22210.78.146.223
5710.78.146.224/3010.78.146.225 – 10.78.146.22610.78.146.227
5810.78.146.228/3010.78.146.229 – 10.78.146.23010.78.146.231
5910.78.146.232/3010.78.146.233 – 10.78.146.23410.78.146.235
6010.78.146.236/3010.78.146.237 – 10.78.146.23810.78.146.239
6110.78.146.240/3010.78.146.241 – 10.78.146.24210.78.146.243
6210.78.146.244/3010.78.146.245 – 10.78.146.24610.78.146.247
6310.78.146.248/3010.78.146.249 – 10.78.146.25010.78.146.251
6410.78.146.252/3010.78.146.253 – 10.78.146.25410.78.146.255
6510.78.147.0/3010.78.147.1 – 10.78.147.210.78.147.3
6610.78.147.4/3010.78.147.5 – 10.78.147.610.78.147.7
6710.78.147.8/3010.78.147.9 – 10.78.147.1010.78.147.11
6810.78.147.12/3010.78.147.13 – 10.78.147.1410.78.147.15
6910.78.147.16/3010.78.147.17 – 10.78.147.1810.78.147.19
7010.78.147.20/3010.78.147.21 – 10.78.147.2210.78.147.23
7110.78.147.24/3010.78.147.25 – 10.78.147.2610.78.147.27
7210.78.147.28/3010.78.147.29 – 10.78.147.3010.78.147.31
7310.78.147.32/3010.78.147.33 – 10.78.147.3410.78.147.35
7410.78.147.36/3010.78.147.37 – 10.78.147.3810.78.147.39
7510.78.147.40/3010.78.147.41 – 10.78.147.4210.78.147.43
7610.78.147.44/3010.78.147.45 – 10.78.147.4610.78.147.47
7710.78.147.48/3010.78.147.49 – 10.78.147.5010.78.147.51
7810.78.147.52/3010.78.147.53 – 10.78.147.5410.78.147.55
7910.78.147.56/3010.78.147.57 – 10.78.147.5810.78.147.59
8010.78.147.60/3010.78.147.61 – 10.78.147.6210.78.147.63
8110.78.147.64/3010.78.147.65 – 10.78.147.6610.78.147.67
8210.78.147.68/3010.78.147.69 – 10.78.147.7010.78.147.71
8310.78.147.72/3010.78.147.73 – 10.78.147.7410.78.147.75
8410.78.147.76/3010.78.147.77 – 10.78.147.7810.78.147.79
8510.78.147.80/3010.78.147.81 – 10.78.147.8210.78.147.83
8610.78.147.84/3010.78.147.85 – 10.78.147.8610.78.147.87
8710.78.147.88/3010.78.147.89 – 10.78.147.9010.78.147.91
8810.78.147.92/3010.78.147.93 – 10.78.147.9410.78.147.95
8910.78.147.96/3010.78.147.97 – 10.78.147.9810.78.147.99
9010.78.147.100/3010.78.147.101 – 10.78.147.10210.78.147.103
9110.78.147.104/3010.78.147.105 – 10.78.147.10610.78.147.107
9210.78.147.108/3010.78.147.109 – 10.78.147.11010.78.147.111
9310.78.147.112/3010.78.147.113 – 10.78.147.11410.78.147.115
9410.78.147.116/3010.78.147.117 – 10.78.147.11810.78.147.119
9510.78.147.120/3010.78.147.121 – 10.78.147.12210.78.147.123
9610.78.147.124/3010.78.147.125 – 10.78.147.12610.78.147.127
9710.78.147.128/3010.78.147.129 – 10.78.147.13010.78.147.131
9810.78.147.132/3010.78.147.133 – 10.78.147.13410.78.147.135
9910.78.147.136/3010.78.147.137 – 10.78.147.13810.78.147.139
10010.78.147.140/3010.78.147.141 – 10.78.147.14210.78.147.143
10110.78.147.144/3010.78.147.145 – 10.78.147.14610.78.147.147
10210.78.147.148/3010.78.147.149 – 10.78.147.15010.78.147.151
10310.78.147.152/3010.78.147.153 – 10.78.147.15410.78.147.155
10410.78.147.156/3010.78.147.157 – 10.78.147.15810.78.147.159
10510.78.147.160/3010.78.147.161 – 10.78.147.16210.78.147.163
10610.78.147.164/3010.78.147.165 – 10.78.147.16610.78.147.167
10710.78.147.168/3010.78.147.169 – 10.78.147.17010.78.147.171
10810.78.147.172/3010.78.147.173 – 10.78.147.17410.78.147.175
10910.78.147.176/3010.78.147.177 – 10.78.147.17810.78.147.179
11010.78.147.180/3010.78.147.181 – 10.78.147.18210.78.147.183
11110.78.147.184/3010.78.147.185 – 10.78.147.18610.78.147.187
11210.78.147.188/3010.78.147.189 – 10.78.147.19010.78.147.191
11310.78.147.192/3010.78.147.193 – 10.78.147.19410.78.147.195
11410.78.147.196/3010.78.147.197 – 10.78.147.19810.78.147.199
11510.78.147.200/3010.78.147.201 – 10.78.147.20210.78.147.203
11610.78.147.204/3010.78.147.205 – 10.78.147.20610.78.147.207
11710.78.147.208/3010.78.147.209 – 10.78.147.21010.78.147.211
11810.78.147.212/3010.78.147.213 – 10.78.147.21410.78.147.215
11910.78.147.216/3010.78.147.217 – 10.78.147.21810.78.147.219
12010.78.147.220/3010.78.147.221 – 10.78.147.22210.78.147.223
12110.78.147.224/3010.78.147.225 – 10.78.147.22610.78.147.227
12210.78.147.228/3010.78.147.229 – 10.78.147.23010.78.147.231
12310.78.147.232/3010.78.147.233 – 10.78.147.23410.78.147.235
12410.78.147.236/3010.78.147.237 – 10.78.147.23810.78.147.239
12510.78.147.240/3010.78.147.241 – 10.78.147.24210.78.147.243
12610.78.147.244/3010.78.147.245 – 10.78.147.24610.78.147.247
12710.78.147.248/3010.78.147.249 – 10.78.147.25010.78.147.251
12810.78.147.252/3010.78.147.253 – 10.78.147.25410.78.147.255
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 →