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)10.78.152.0/23
network10.78.152.0/23
broadcast10.78.153.255
first host10.78.152.1
last host10.78.153.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.78.152.0/23
address00001010.01001110.10011000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01001110.10011000.00000000
broadcast00001010.01001110.10011001.11111111
green = network part, grey = host part
hex0x0a4e9800
decimal172922880
reverse dns0.152.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:9800

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.152.0/3010.78.152.1 – 10.78.152.210.78.152.3
210.78.152.4/3010.78.152.5 – 10.78.152.610.78.152.7
310.78.152.8/3010.78.152.9 – 10.78.152.1010.78.152.11
410.78.152.12/3010.78.152.13 – 10.78.152.1410.78.152.15
510.78.152.16/3010.78.152.17 – 10.78.152.1810.78.152.19
610.78.152.20/3010.78.152.21 – 10.78.152.2210.78.152.23
710.78.152.24/3010.78.152.25 – 10.78.152.2610.78.152.27
810.78.152.28/3010.78.152.29 – 10.78.152.3010.78.152.31
910.78.152.32/3010.78.152.33 – 10.78.152.3410.78.152.35
1010.78.152.36/3010.78.152.37 – 10.78.152.3810.78.152.39
1110.78.152.40/3010.78.152.41 – 10.78.152.4210.78.152.43
1210.78.152.44/3010.78.152.45 – 10.78.152.4610.78.152.47
1310.78.152.48/3010.78.152.49 – 10.78.152.5010.78.152.51
1410.78.152.52/3010.78.152.53 – 10.78.152.5410.78.152.55
1510.78.152.56/3010.78.152.57 – 10.78.152.5810.78.152.59
1610.78.152.60/3010.78.152.61 – 10.78.152.6210.78.152.63
1710.78.152.64/3010.78.152.65 – 10.78.152.6610.78.152.67
1810.78.152.68/3010.78.152.69 – 10.78.152.7010.78.152.71
1910.78.152.72/3010.78.152.73 – 10.78.152.7410.78.152.75
2010.78.152.76/3010.78.152.77 – 10.78.152.7810.78.152.79
2110.78.152.80/3010.78.152.81 – 10.78.152.8210.78.152.83
2210.78.152.84/3010.78.152.85 – 10.78.152.8610.78.152.87
2310.78.152.88/3010.78.152.89 – 10.78.152.9010.78.152.91
2410.78.152.92/3010.78.152.93 – 10.78.152.9410.78.152.95
2510.78.152.96/3010.78.152.97 – 10.78.152.9810.78.152.99
2610.78.152.100/3010.78.152.101 – 10.78.152.10210.78.152.103
2710.78.152.104/3010.78.152.105 – 10.78.152.10610.78.152.107
2810.78.152.108/3010.78.152.109 – 10.78.152.11010.78.152.111
2910.78.152.112/3010.78.152.113 – 10.78.152.11410.78.152.115
3010.78.152.116/3010.78.152.117 – 10.78.152.11810.78.152.119
3110.78.152.120/3010.78.152.121 – 10.78.152.12210.78.152.123
3210.78.152.124/3010.78.152.125 – 10.78.152.12610.78.152.127
3310.78.152.128/3010.78.152.129 – 10.78.152.13010.78.152.131
3410.78.152.132/3010.78.152.133 – 10.78.152.13410.78.152.135
3510.78.152.136/3010.78.152.137 – 10.78.152.13810.78.152.139
3610.78.152.140/3010.78.152.141 – 10.78.152.14210.78.152.143
3710.78.152.144/3010.78.152.145 – 10.78.152.14610.78.152.147
3810.78.152.148/3010.78.152.149 – 10.78.152.15010.78.152.151
3910.78.152.152/3010.78.152.153 – 10.78.152.15410.78.152.155
4010.78.152.156/3010.78.152.157 – 10.78.152.15810.78.152.159
4110.78.152.160/3010.78.152.161 – 10.78.152.16210.78.152.163
4210.78.152.164/3010.78.152.165 – 10.78.152.16610.78.152.167
4310.78.152.168/3010.78.152.169 – 10.78.152.17010.78.152.171
4410.78.152.172/3010.78.152.173 – 10.78.152.17410.78.152.175
4510.78.152.176/3010.78.152.177 – 10.78.152.17810.78.152.179
4610.78.152.180/3010.78.152.181 – 10.78.152.18210.78.152.183
4710.78.152.184/3010.78.152.185 – 10.78.152.18610.78.152.187
4810.78.152.188/3010.78.152.189 – 10.78.152.19010.78.152.191
4910.78.152.192/3010.78.152.193 – 10.78.152.19410.78.152.195
5010.78.152.196/3010.78.152.197 – 10.78.152.19810.78.152.199
5110.78.152.200/3010.78.152.201 – 10.78.152.20210.78.152.203
5210.78.152.204/3010.78.152.205 – 10.78.152.20610.78.152.207
5310.78.152.208/3010.78.152.209 – 10.78.152.21010.78.152.211
5410.78.152.212/3010.78.152.213 – 10.78.152.21410.78.152.215
5510.78.152.216/3010.78.152.217 – 10.78.152.21810.78.152.219
5610.78.152.220/3010.78.152.221 – 10.78.152.22210.78.152.223
5710.78.152.224/3010.78.152.225 – 10.78.152.22610.78.152.227
5810.78.152.228/3010.78.152.229 – 10.78.152.23010.78.152.231
5910.78.152.232/3010.78.152.233 – 10.78.152.23410.78.152.235
6010.78.152.236/3010.78.152.237 – 10.78.152.23810.78.152.239
6110.78.152.240/3010.78.152.241 – 10.78.152.24210.78.152.243
6210.78.152.244/3010.78.152.245 – 10.78.152.24610.78.152.247
6310.78.152.248/3010.78.152.249 – 10.78.152.25010.78.152.251
6410.78.152.252/3010.78.152.253 – 10.78.152.25410.78.152.255
6510.78.153.0/3010.78.153.1 – 10.78.153.210.78.153.3
6610.78.153.4/3010.78.153.5 – 10.78.153.610.78.153.7
6710.78.153.8/3010.78.153.9 – 10.78.153.1010.78.153.11
6810.78.153.12/3010.78.153.13 – 10.78.153.1410.78.153.15
6910.78.153.16/3010.78.153.17 – 10.78.153.1810.78.153.19
7010.78.153.20/3010.78.153.21 – 10.78.153.2210.78.153.23
7110.78.153.24/3010.78.153.25 – 10.78.153.2610.78.153.27
7210.78.153.28/3010.78.153.29 – 10.78.153.3010.78.153.31
7310.78.153.32/3010.78.153.33 – 10.78.153.3410.78.153.35
7410.78.153.36/3010.78.153.37 – 10.78.153.3810.78.153.39
7510.78.153.40/3010.78.153.41 – 10.78.153.4210.78.153.43
7610.78.153.44/3010.78.153.45 – 10.78.153.4610.78.153.47
7710.78.153.48/3010.78.153.49 – 10.78.153.5010.78.153.51
7810.78.153.52/3010.78.153.53 – 10.78.153.5410.78.153.55
7910.78.153.56/3010.78.153.57 – 10.78.153.5810.78.153.59
8010.78.153.60/3010.78.153.61 – 10.78.153.6210.78.153.63
8110.78.153.64/3010.78.153.65 – 10.78.153.6610.78.153.67
8210.78.153.68/3010.78.153.69 – 10.78.153.7010.78.153.71
8310.78.153.72/3010.78.153.73 – 10.78.153.7410.78.153.75
8410.78.153.76/3010.78.153.77 – 10.78.153.7810.78.153.79
8510.78.153.80/3010.78.153.81 – 10.78.153.8210.78.153.83
8610.78.153.84/3010.78.153.85 – 10.78.153.8610.78.153.87
8710.78.153.88/3010.78.153.89 – 10.78.153.9010.78.153.91
8810.78.153.92/3010.78.153.93 – 10.78.153.9410.78.153.95
8910.78.153.96/3010.78.153.97 – 10.78.153.9810.78.153.99
9010.78.153.100/3010.78.153.101 – 10.78.153.10210.78.153.103
9110.78.153.104/3010.78.153.105 – 10.78.153.10610.78.153.107
9210.78.153.108/3010.78.153.109 – 10.78.153.11010.78.153.111
9310.78.153.112/3010.78.153.113 – 10.78.153.11410.78.153.115
9410.78.153.116/3010.78.153.117 – 10.78.153.11810.78.153.119
9510.78.153.120/3010.78.153.121 – 10.78.153.12210.78.153.123
9610.78.153.124/3010.78.153.125 – 10.78.153.12610.78.153.127
9710.78.153.128/3010.78.153.129 – 10.78.153.13010.78.153.131
9810.78.153.132/3010.78.153.133 – 10.78.153.13410.78.153.135
9910.78.153.136/3010.78.153.137 – 10.78.153.13810.78.153.139
10010.78.153.140/3010.78.153.141 – 10.78.153.14210.78.153.143
10110.78.153.144/3010.78.153.145 – 10.78.153.14610.78.153.147
10210.78.153.148/3010.78.153.149 – 10.78.153.15010.78.153.151
10310.78.153.152/3010.78.153.153 – 10.78.153.15410.78.153.155
10410.78.153.156/3010.78.153.157 – 10.78.153.15810.78.153.159
10510.78.153.160/3010.78.153.161 – 10.78.153.16210.78.153.163
10610.78.153.164/3010.78.153.165 – 10.78.153.16610.78.153.167
10710.78.153.168/3010.78.153.169 – 10.78.153.17010.78.153.171
10810.78.153.172/3010.78.153.173 – 10.78.153.17410.78.153.175
10910.78.153.176/3010.78.153.177 – 10.78.153.17810.78.153.179
11010.78.153.180/3010.78.153.181 – 10.78.153.18210.78.153.183
11110.78.153.184/3010.78.153.185 – 10.78.153.18610.78.153.187
11210.78.153.188/3010.78.153.189 – 10.78.153.19010.78.153.191
11310.78.153.192/3010.78.153.193 – 10.78.153.19410.78.153.195
11410.78.153.196/3010.78.153.197 – 10.78.153.19810.78.153.199
11510.78.153.200/3010.78.153.201 – 10.78.153.20210.78.153.203
11610.78.153.204/3010.78.153.205 – 10.78.153.20610.78.153.207
11710.78.153.208/3010.78.153.209 – 10.78.153.21010.78.153.211
11810.78.153.212/3010.78.153.213 – 10.78.153.21410.78.153.215
11910.78.153.216/3010.78.153.217 – 10.78.153.21810.78.153.219
12010.78.153.220/3010.78.153.221 – 10.78.153.22210.78.153.223
12110.78.153.224/3010.78.153.225 – 10.78.153.22610.78.153.227
12210.78.153.228/3010.78.153.229 – 10.78.153.23010.78.153.231
12310.78.153.232/3010.78.153.233 – 10.78.153.23410.78.153.235
12410.78.153.236/3010.78.153.237 – 10.78.153.23810.78.153.239
12510.78.153.240/3010.78.153.241 – 10.78.153.24210.78.153.243
12610.78.153.244/3010.78.153.245 – 10.78.153.24610.78.153.247
12710.78.153.248/3010.78.153.249 – 10.78.153.25010.78.153.251
12810.78.153.252/3010.78.153.253 – 10.78.153.25410.78.153.255
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 →