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)10.78.88.0/23
network10.78.88.0/23
broadcast10.78.89.255
first host10.78.88.1
last host10.78.89.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.78.88.0/23
address00001010.01001110.01011000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01001110.01011000.00000000
broadcast00001010.01001110.01011001.11111111
green = network part, grey = host part
hex0x0a4e5800
decimal172906496
reverse dns0.88.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:5800

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.88.0/3010.78.88.1 – 10.78.88.210.78.88.3
210.78.88.4/3010.78.88.5 – 10.78.88.610.78.88.7
310.78.88.8/3010.78.88.9 – 10.78.88.1010.78.88.11
410.78.88.12/3010.78.88.13 – 10.78.88.1410.78.88.15
510.78.88.16/3010.78.88.17 – 10.78.88.1810.78.88.19
610.78.88.20/3010.78.88.21 – 10.78.88.2210.78.88.23
710.78.88.24/3010.78.88.25 – 10.78.88.2610.78.88.27
810.78.88.28/3010.78.88.29 – 10.78.88.3010.78.88.31
910.78.88.32/3010.78.88.33 – 10.78.88.3410.78.88.35
1010.78.88.36/3010.78.88.37 – 10.78.88.3810.78.88.39
1110.78.88.40/3010.78.88.41 – 10.78.88.4210.78.88.43
1210.78.88.44/3010.78.88.45 – 10.78.88.4610.78.88.47
1310.78.88.48/3010.78.88.49 – 10.78.88.5010.78.88.51
1410.78.88.52/3010.78.88.53 – 10.78.88.5410.78.88.55
1510.78.88.56/3010.78.88.57 – 10.78.88.5810.78.88.59
1610.78.88.60/3010.78.88.61 – 10.78.88.6210.78.88.63
1710.78.88.64/3010.78.88.65 – 10.78.88.6610.78.88.67
1810.78.88.68/3010.78.88.69 – 10.78.88.7010.78.88.71
1910.78.88.72/3010.78.88.73 – 10.78.88.7410.78.88.75
2010.78.88.76/3010.78.88.77 – 10.78.88.7810.78.88.79
2110.78.88.80/3010.78.88.81 – 10.78.88.8210.78.88.83
2210.78.88.84/3010.78.88.85 – 10.78.88.8610.78.88.87
2310.78.88.88/3010.78.88.89 – 10.78.88.9010.78.88.91
2410.78.88.92/3010.78.88.93 – 10.78.88.9410.78.88.95
2510.78.88.96/3010.78.88.97 – 10.78.88.9810.78.88.99
2610.78.88.100/3010.78.88.101 – 10.78.88.10210.78.88.103
2710.78.88.104/3010.78.88.105 – 10.78.88.10610.78.88.107
2810.78.88.108/3010.78.88.109 – 10.78.88.11010.78.88.111
2910.78.88.112/3010.78.88.113 – 10.78.88.11410.78.88.115
3010.78.88.116/3010.78.88.117 – 10.78.88.11810.78.88.119
3110.78.88.120/3010.78.88.121 – 10.78.88.12210.78.88.123
3210.78.88.124/3010.78.88.125 – 10.78.88.12610.78.88.127
3310.78.88.128/3010.78.88.129 – 10.78.88.13010.78.88.131
3410.78.88.132/3010.78.88.133 – 10.78.88.13410.78.88.135
3510.78.88.136/3010.78.88.137 – 10.78.88.13810.78.88.139
3610.78.88.140/3010.78.88.141 – 10.78.88.14210.78.88.143
3710.78.88.144/3010.78.88.145 – 10.78.88.14610.78.88.147
3810.78.88.148/3010.78.88.149 – 10.78.88.15010.78.88.151
3910.78.88.152/3010.78.88.153 – 10.78.88.15410.78.88.155
4010.78.88.156/3010.78.88.157 – 10.78.88.15810.78.88.159
4110.78.88.160/3010.78.88.161 – 10.78.88.16210.78.88.163
4210.78.88.164/3010.78.88.165 – 10.78.88.16610.78.88.167
4310.78.88.168/3010.78.88.169 – 10.78.88.17010.78.88.171
4410.78.88.172/3010.78.88.173 – 10.78.88.17410.78.88.175
4510.78.88.176/3010.78.88.177 – 10.78.88.17810.78.88.179
4610.78.88.180/3010.78.88.181 – 10.78.88.18210.78.88.183
4710.78.88.184/3010.78.88.185 – 10.78.88.18610.78.88.187
4810.78.88.188/3010.78.88.189 – 10.78.88.19010.78.88.191
4910.78.88.192/3010.78.88.193 – 10.78.88.19410.78.88.195
5010.78.88.196/3010.78.88.197 – 10.78.88.19810.78.88.199
5110.78.88.200/3010.78.88.201 – 10.78.88.20210.78.88.203
5210.78.88.204/3010.78.88.205 – 10.78.88.20610.78.88.207
5310.78.88.208/3010.78.88.209 – 10.78.88.21010.78.88.211
5410.78.88.212/3010.78.88.213 – 10.78.88.21410.78.88.215
5510.78.88.216/3010.78.88.217 – 10.78.88.21810.78.88.219
5610.78.88.220/3010.78.88.221 – 10.78.88.22210.78.88.223
5710.78.88.224/3010.78.88.225 – 10.78.88.22610.78.88.227
5810.78.88.228/3010.78.88.229 – 10.78.88.23010.78.88.231
5910.78.88.232/3010.78.88.233 – 10.78.88.23410.78.88.235
6010.78.88.236/3010.78.88.237 – 10.78.88.23810.78.88.239
6110.78.88.240/3010.78.88.241 – 10.78.88.24210.78.88.243
6210.78.88.244/3010.78.88.245 – 10.78.88.24610.78.88.247
6310.78.88.248/3010.78.88.249 – 10.78.88.25010.78.88.251
6410.78.88.252/3010.78.88.253 – 10.78.88.25410.78.88.255
6510.78.89.0/3010.78.89.1 – 10.78.89.210.78.89.3
6610.78.89.4/3010.78.89.5 – 10.78.89.610.78.89.7
6710.78.89.8/3010.78.89.9 – 10.78.89.1010.78.89.11
6810.78.89.12/3010.78.89.13 – 10.78.89.1410.78.89.15
6910.78.89.16/3010.78.89.17 – 10.78.89.1810.78.89.19
7010.78.89.20/3010.78.89.21 – 10.78.89.2210.78.89.23
7110.78.89.24/3010.78.89.25 – 10.78.89.2610.78.89.27
7210.78.89.28/3010.78.89.29 – 10.78.89.3010.78.89.31
7310.78.89.32/3010.78.89.33 – 10.78.89.3410.78.89.35
7410.78.89.36/3010.78.89.37 – 10.78.89.3810.78.89.39
7510.78.89.40/3010.78.89.41 – 10.78.89.4210.78.89.43
7610.78.89.44/3010.78.89.45 – 10.78.89.4610.78.89.47
7710.78.89.48/3010.78.89.49 – 10.78.89.5010.78.89.51
7810.78.89.52/3010.78.89.53 – 10.78.89.5410.78.89.55
7910.78.89.56/3010.78.89.57 – 10.78.89.5810.78.89.59
8010.78.89.60/3010.78.89.61 – 10.78.89.6210.78.89.63
8110.78.89.64/3010.78.89.65 – 10.78.89.6610.78.89.67
8210.78.89.68/3010.78.89.69 – 10.78.89.7010.78.89.71
8310.78.89.72/3010.78.89.73 – 10.78.89.7410.78.89.75
8410.78.89.76/3010.78.89.77 – 10.78.89.7810.78.89.79
8510.78.89.80/3010.78.89.81 – 10.78.89.8210.78.89.83
8610.78.89.84/3010.78.89.85 – 10.78.89.8610.78.89.87
8710.78.89.88/3010.78.89.89 – 10.78.89.9010.78.89.91
8810.78.89.92/3010.78.89.93 – 10.78.89.9410.78.89.95
8910.78.89.96/3010.78.89.97 – 10.78.89.9810.78.89.99
9010.78.89.100/3010.78.89.101 – 10.78.89.10210.78.89.103
9110.78.89.104/3010.78.89.105 – 10.78.89.10610.78.89.107
9210.78.89.108/3010.78.89.109 – 10.78.89.11010.78.89.111
9310.78.89.112/3010.78.89.113 – 10.78.89.11410.78.89.115
9410.78.89.116/3010.78.89.117 – 10.78.89.11810.78.89.119
9510.78.89.120/3010.78.89.121 – 10.78.89.12210.78.89.123
9610.78.89.124/3010.78.89.125 – 10.78.89.12610.78.89.127
9710.78.89.128/3010.78.89.129 – 10.78.89.13010.78.89.131
9810.78.89.132/3010.78.89.133 – 10.78.89.13410.78.89.135
9910.78.89.136/3010.78.89.137 – 10.78.89.13810.78.89.139
10010.78.89.140/3010.78.89.141 – 10.78.89.14210.78.89.143
10110.78.89.144/3010.78.89.145 – 10.78.89.14610.78.89.147
10210.78.89.148/3010.78.89.149 – 10.78.89.15010.78.89.151
10310.78.89.152/3010.78.89.153 – 10.78.89.15410.78.89.155
10410.78.89.156/3010.78.89.157 – 10.78.89.15810.78.89.159
10510.78.89.160/3010.78.89.161 – 10.78.89.16210.78.89.163
10610.78.89.164/3010.78.89.165 – 10.78.89.16610.78.89.167
10710.78.89.168/3010.78.89.169 – 10.78.89.17010.78.89.171
10810.78.89.172/3010.78.89.173 – 10.78.89.17410.78.89.175
10910.78.89.176/3010.78.89.177 – 10.78.89.17810.78.89.179
11010.78.89.180/3010.78.89.181 – 10.78.89.18210.78.89.183
11110.78.89.184/3010.78.89.185 – 10.78.89.18610.78.89.187
11210.78.89.188/3010.78.89.189 – 10.78.89.19010.78.89.191
11310.78.89.192/3010.78.89.193 – 10.78.89.19410.78.89.195
11410.78.89.196/3010.78.89.197 – 10.78.89.19810.78.89.199
11510.78.89.200/3010.78.89.201 – 10.78.89.20210.78.89.203
11610.78.89.204/3010.78.89.205 – 10.78.89.20610.78.89.207
11710.78.89.208/3010.78.89.209 – 10.78.89.21010.78.89.211
11810.78.89.212/3010.78.89.213 – 10.78.89.21410.78.89.215
11910.78.89.216/3010.78.89.217 – 10.78.89.21810.78.89.219
12010.78.89.220/3010.78.89.221 – 10.78.89.22210.78.89.223
12110.78.89.224/3010.78.89.225 – 10.78.89.22610.78.89.227
12210.78.89.228/3010.78.89.229 – 10.78.89.23010.78.89.231
12310.78.89.232/3010.78.89.233 – 10.78.89.23410.78.89.235
12410.78.89.236/3010.78.89.237 – 10.78.89.23810.78.89.239
12510.78.89.240/3010.78.89.241 – 10.78.89.24210.78.89.243
12610.78.89.244/3010.78.89.245 – 10.78.89.24610.78.89.247
12710.78.89.248/3010.78.89.249 – 10.78.89.25010.78.89.251
12810.78.89.252/3010.78.89.253 – 10.78.89.25410.78.89.255
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 →