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
private IP (RFC 1918)10.131.178.0/23
network10.131.178.0/23
broadcast10.131.179.255
first host10.131.178.1
last host10.131.179.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.131.178.0/23
address00001010.10000011.10110010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.10000011.10110010.00000000
broadcast00001010.10000011.10110011.11111111
green = network part, grey = host part
hex0x0a83b200
decimal176402944
reverse dns0.178.131.10.in-addr.arpa
ipv4-mapped::ffff:a83:b200

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.131.178.0/3010.131.178.1 – 10.131.178.210.131.178.3
210.131.178.4/3010.131.178.5 – 10.131.178.610.131.178.7
310.131.178.8/3010.131.178.9 – 10.131.178.1010.131.178.11
410.131.178.12/3010.131.178.13 – 10.131.178.1410.131.178.15
510.131.178.16/3010.131.178.17 – 10.131.178.1810.131.178.19
610.131.178.20/3010.131.178.21 – 10.131.178.2210.131.178.23
710.131.178.24/3010.131.178.25 – 10.131.178.2610.131.178.27
810.131.178.28/3010.131.178.29 – 10.131.178.3010.131.178.31
910.131.178.32/3010.131.178.33 – 10.131.178.3410.131.178.35
1010.131.178.36/3010.131.178.37 – 10.131.178.3810.131.178.39
1110.131.178.40/3010.131.178.41 – 10.131.178.4210.131.178.43
1210.131.178.44/3010.131.178.45 – 10.131.178.4610.131.178.47
1310.131.178.48/3010.131.178.49 – 10.131.178.5010.131.178.51
1410.131.178.52/3010.131.178.53 – 10.131.178.5410.131.178.55
1510.131.178.56/3010.131.178.57 – 10.131.178.5810.131.178.59
1610.131.178.60/3010.131.178.61 – 10.131.178.6210.131.178.63
1710.131.178.64/3010.131.178.65 – 10.131.178.6610.131.178.67
1810.131.178.68/3010.131.178.69 – 10.131.178.7010.131.178.71
1910.131.178.72/3010.131.178.73 – 10.131.178.7410.131.178.75
2010.131.178.76/3010.131.178.77 – 10.131.178.7810.131.178.79
2110.131.178.80/3010.131.178.81 – 10.131.178.8210.131.178.83
2210.131.178.84/3010.131.178.85 – 10.131.178.8610.131.178.87
2310.131.178.88/3010.131.178.89 – 10.131.178.9010.131.178.91
2410.131.178.92/3010.131.178.93 – 10.131.178.9410.131.178.95
2510.131.178.96/3010.131.178.97 – 10.131.178.9810.131.178.99
2610.131.178.100/3010.131.178.101 – 10.131.178.10210.131.178.103
2710.131.178.104/3010.131.178.105 – 10.131.178.10610.131.178.107
2810.131.178.108/3010.131.178.109 – 10.131.178.11010.131.178.111
2910.131.178.112/3010.131.178.113 – 10.131.178.11410.131.178.115
3010.131.178.116/3010.131.178.117 – 10.131.178.11810.131.178.119
3110.131.178.120/3010.131.178.121 – 10.131.178.12210.131.178.123
3210.131.178.124/3010.131.178.125 – 10.131.178.12610.131.178.127
3310.131.178.128/3010.131.178.129 – 10.131.178.13010.131.178.131
3410.131.178.132/3010.131.178.133 – 10.131.178.13410.131.178.135
3510.131.178.136/3010.131.178.137 – 10.131.178.13810.131.178.139
3610.131.178.140/3010.131.178.141 – 10.131.178.14210.131.178.143
3710.131.178.144/3010.131.178.145 – 10.131.178.14610.131.178.147
3810.131.178.148/3010.131.178.149 – 10.131.178.15010.131.178.151
3910.131.178.152/3010.131.178.153 – 10.131.178.15410.131.178.155
4010.131.178.156/3010.131.178.157 – 10.131.178.15810.131.178.159
4110.131.178.160/3010.131.178.161 – 10.131.178.16210.131.178.163
4210.131.178.164/3010.131.178.165 – 10.131.178.16610.131.178.167
4310.131.178.168/3010.131.178.169 – 10.131.178.17010.131.178.171
4410.131.178.172/3010.131.178.173 – 10.131.178.17410.131.178.175
4510.131.178.176/3010.131.178.177 – 10.131.178.17810.131.178.179
4610.131.178.180/3010.131.178.181 – 10.131.178.18210.131.178.183
4710.131.178.184/3010.131.178.185 – 10.131.178.18610.131.178.187
4810.131.178.188/3010.131.178.189 – 10.131.178.19010.131.178.191
4910.131.178.192/3010.131.178.193 – 10.131.178.19410.131.178.195
5010.131.178.196/3010.131.178.197 – 10.131.178.19810.131.178.199
5110.131.178.200/3010.131.178.201 – 10.131.178.20210.131.178.203
5210.131.178.204/3010.131.178.205 – 10.131.178.20610.131.178.207
5310.131.178.208/3010.131.178.209 – 10.131.178.21010.131.178.211
5410.131.178.212/3010.131.178.213 – 10.131.178.21410.131.178.215
5510.131.178.216/3010.131.178.217 – 10.131.178.21810.131.178.219
5610.131.178.220/3010.131.178.221 – 10.131.178.22210.131.178.223
5710.131.178.224/3010.131.178.225 – 10.131.178.22610.131.178.227
5810.131.178.228/3010.131.178.229 – 10.131.178.23010.131.178.231
5910.131.178.232/3010.131.178.233 – 10.131.178.23410.131.178.235
6010.131.178.236/3010.131.178.237 – 10.131.178.23810.131.178.239
6110.131.178.240/3010.131.178.241 – 10.131.178.24210.131.178.243
6210.131.178.244/3010.131.178.245 – 10.131.178.24610.131.178.247
6310.131.178.248/3010.131.178.249 – 10.131.178.25010.131.178.251
6410.131.178.252/3010.131.178.253 – 10.131.178.25410.131.178.255
6510.131.179.0/3010.131.179.1 – 10.131.179.210.131.179.3
6610.131.179.4/3010.131.179.5 – 10.131.179.610.131.179.7
6710.131.179.8/3010.131.179.9 – 10.131.179.1010.131.179.11
6810.131.179.12/3010.131.179.13 – 10.131.179.1410.131.179.15
6910.131.179.16/3010.131.179.17 – 10.131.179.1810.131.179.19
7010.131.179.20/3010.131.179.21 – 10.131.179.2210.131.179.23
7110.131.179.24/3010.131.179.25 – 10.131.179.2610.131.179.27
7210.131.179.28/3010.131.179.29 – 10.131.179.3010.131.179.31
7310.131.179.32/3010.131.179.33 – 10.131.179.3410.131.179.35
7410.131.179.36/3010.131.179.37 – 10.131.179.3810.131.179.39
7510.131.179.40/3010.131.179.41 – 10.131.179.4210.131.179.43
7610.131.179.44/3010.131.179.45 – 10.131.179.4610.131.179.47
7710.131.179.48/3010.131.179.49 – 10.131.179.5010.131.179.51
7810.131.179.52/3010.131.179.53 – 10.131.179.5410.131.179.55
7910.131.179.56/3010.131.179.57 – 10.131.179.5810.131.179.59
8010.131.179.60/3010.131.179.61 – 10.131.179.6210.131.179.63
8110.131.179.64/3010.131.179.65 – 10.131.179.6610.131.179.67
8210.131.179.68/3010.131.179.69 – 10.131.179.7010.131.179.71
8310.131.179.72/3010.131.179.73 – 10.131.179.7410.131.179.75
8410.131.179.76/3010.131.179.77 – 10.131.179.7810.131.179.79
8510.131.179.80/3010.131.179.81 – 10.131.179.8210.131.179.83
8610.131.179.84/3010.131.179.85 – 10.131.179.8610.131.179.87
8710.131.179.88/3010.131.179.89 – 10.131.179.9010.131.179.91
8810.131.179.92/3010.131.179.93 – 10.131.179.9410.131.179.95
8910.131.179.96/3010.131.179.97 – 10.131.179.9810.131.179.99
9010.131.179.100/3010.131.179.101 – 10.131.179.10210.131.179.103
9110.131.179.104/3010.131.179.105 – 10.131.179.10610.131.179.107
9210.131.179.108/3010.131.179.109 – 10.131.179.11010.131.179.111
9310.131.179.112/3010.131.179.113 – 10.131.179.11410.131.179.115
9410.131.179.116/3010.131.179.117 – 10.131.179.11810.131.179.119
9510.131.179.120/3010.131.179.121 – 10.131.179.12210.131.179.123
9610.131.179.124/3010.131.179.125 – 10.131.179.12610.131.179.127
9710.131.179.128/3010.131.179.129 – 10.131.179.13010.131.179.131
9810.131.179.132/3010.131.179.133 – 10.131.179.13410.131.179.135
9910.131.179.136/3010.131.179.137 – 10.131.179.13810.131.179.139
10010.131.179.140/3010.131.179.141 – 10.131.179.14210.131.179.143
10110.131.179.144/3010.131.179.145 – 10.131.179.14610.131.179.147
10210.131.179.148/3010.131.179.149 – 10.131.179.15010.131.179.151
10310.131.179.152/3010.131.179.153 – 10.131.179.15410.131.179.155
10410.131.179.156/3010.131.179.157 – 10.131.179.15810.131.179.159
10510.131.179.160/3010.131.179.161 – 10.131.179.16210.131.179.163
10610.131.179.164/3010.131.179.165 – 10.131.179.16610.131.179.167
10710.131.179.168/3010.131.179.169 – 10.131.179.17010.131.179.171
10810.131.179.172/3010.131.179.173 – 10.131.179.17410.131.179.175
10910.131.179.176/3010.131.179.177 – 10.131.179.17810.131.179.179
11010.131.179.180/3010.131.179.181 – 10.131.179.18210.131.179.183
11110.131.179.184/3010.131.179.185 – 10.131.179.18610.131.179.187
11210.131.179.188/3010.131.179.189 – 10.131.179.19010.131.179.191
11310.131.179.192/3010.131.179.193 – 10.131.179.19410.131.179.195
11410.131.179.196/3010.131.179.197 – 10.131.179.19810.131.179.199
11510.131.179.200/3010.131.179.201 – 10.131.179.20210.131.179.203
11610.131.179.204/3010.131.179.205 – 10.131.179.20610.131.179.207
11710.131.179.208/3010.131.179.209 – 10.131.179.21010.131.179.211
11810.131.179.212/3010.131.179.213 – 10.131.179.21410.131.179.215
11910.131.179.216/3010.131.179.217 – 10.131.179.21810.131.179.219
12010.131.179.220/3010.131.179.221 – 10.131.179.22210.131.179.223
12110.131.179.224/3010.131.179.225 – 10.131.179.22610.131.179.227
12210.131.179.228/3010.131.179.229 – 10.131.179.23010.131.179.231
12310.131.179.232/3010.131.179.233 – 10.131.179.23410.131.179.235
12410.131.179.236/3010.131.179.237 – 10.131.179.23810.131.179.239
12510.131.179.240/3010.131.179.241 – 10.131.179.24210.131.179.243
12610.131.179.244/3010.131.179.245 – 10.131.179.24610.131.179.247
12710.131.179.248/3010.131.179.249 – 10.131.179.25010.131.179.251
12810.131.179.252/3010.131.179.253 – 10.131.179.25410.131.179.255
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 →