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)10.87.92.0/23
network10.87.92.0/23
broadcast10.87.93.255
first host10.87.92.1
last host10.87.93.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.87.92.0/23
address00001010.01010111.01011100.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01010111.01011100.00000000
broadcast00001010.01010111.01011101.11111111
green = network part, grey = host part
hex0x0a575c00
decimal173497344
reverse dns0.92.87.10.in-addr.arpa
ipv4-mapped::ffff:a57:5c00

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.87.92.0/3010.87.92.1 – 10.87.92.210.87.92.3
210.87.92.4/3010.87.92.5 – 10.87.92.610.87.92.7
310.87.92.8/3010.87.92.9 – 10.87.92.1010.87.92.11
410.87.92.12/3010.87.92.13 – 10.87.92.1410.87.92.15
510.87.92.16/3010.87.92.17 – 10.87.92.1810.87.92.19
610.87.92.20/3010.87.92.21 – 10.87.92.2210.87.92.23
710.87.92.24/3010.87.92.25 – 10.87.92.2610.87.92.27
810.87.92.28/3010.87.92.29 – 10.87.92.3010.87.92.31
910.87.92.32/3010.87.92.33 – 10.87.92.3410.87.92.35
1010.87.92.36/3010.87.92.37 – 10.87.92.3810.87.92.39
1110.87.92.40/3010.87.92.41 – 10.87.92.4210.87.92.43
1210.87.92.44/3010.87.92.45 – 10.87.92.4610.87.92.47
1310.87.92.48/3010.87.92.49 – 10.87.92.5010.87.92.51
1410.87.92.52/3010.87.92.53 – 10.87.92.5410.87.92.55
1510.87.92.56/3010.87.92.57 – 10.87.92.5810.87.92.59
1610.87.92.60/3010.87.92.61 – 10.87.92.6210.87.92.63
1710.87.92.64/3010.87.92.65 – 10.87.92.6610.87.92.67
1810.87.92.68/3010.87.92.69 – 10.87.92.7010.87.92.71
1910.87.92.72/3010.87.92.73 – 10.87.92.7410.87.92.75
2010.87.92.76/3010.87.92.77 – 10.87.92.7810.87.92.79
2110.87.92.80/3010.87.92.81 – 10.87.92.8210.87.92.83
2210.87.92.84/3010.87.92.85 – 10.87.92.8610.87.92.87
2310.87.92.88/3010.87.92.89 – 10.87.92.9010.87.92.91
2410.87.92.92/3010.87.92.93 – 10.87.92.9410.87.92.95
2510.87.92.96/3010.87.92.97 – 10.87.92.9810.87.92.99
2610.87.92.100/3010.87.92.101 – 10.87.92.10210.87.92.103
2710.87.92.104/3010.87.92.105 – 10.87.92.10610.87.92.107
2810.87.92.108/3010.87.92.109 – 10.87.92.11010.87.92.111
2910.87.92.112/3010.87.92.113 – 10.87.92.11410.87.92.115
3010.87.92.116/3010.87.92.117 – 10.87.92.11810.87.92.119
3110.87.92.120/3010.87.92.121 – 10.87.92.12210.87.92.123
3210.87.92.124/3010.87.92.125 – 10.87.92.12610.87.92.127
3310.87.92.128/3010.87.92.129 – 10.87.92.13010.87.92.131
3410.87.92.132/3010.87.92.133 – 10.87.92.13410.87.92.135
3510.87.92.136/3010.87.92.137 – 10.87.92.13810.87.92.139
3610.87.92.140/3010.87.92.141 – 10.87.92.14210.87.92.143
3710.87.92.144/3010.87.92.145 – 10.87.92.14610.87.92.147
3810.87.92.148/3010.87.92.149 – 10.87.92.15010.87.92.151
3910.87.92.152/3010.87.92.153 – 10.87.92.15410.87.92.155
4010.87.92.156/3010.87.92.157 – 10.87.92.15810.87.92.159
4110.87.92.160/3010.87.92.161 – 10.87.92.16210.87.92.163
4210.87.92.164/3010.87.92.165 – 10.87.92.16610.87.92.167
4310.87.92.168/3010.87.92.169 – 10.87.92.17010.87.92.171
4410.87.92.172/3010.87.92.173 – 10.87.92.17410.87.92.175
4510.87.92.176/3010.87.92.177 – 10.87.92.17810.87.92.179
4610.87.92.180/3010.87.92.181 – 10.87.92.18210.87.92.183
4710.87.92.184/3010.87.92.185 – 10.87.92.18610.87.92.187
4810.87.92.188/3010.87.92.189 – 10.87.92.19010.87.92.191
4910.87.92.192/3010.87.92.193 – 10.87.92.19410.87.92.195
5010.87.92.196/3010.87.92.197 – 10.87.92.19810.87.92.199
5110.87.92.200/3010.87.92.201 – 10.87.92.20210.87.92.203
5210.87.92.204/3010.87.92.205 – 10.87.92.20610.87.92.207
5310.87.92.208/3010.87.92.209 – 10.87.92.21010.87.92.211
5410.87.92.212/3010.87.92.213 – 10.87.92.21410.87.92.215
5510.87.92.216/3010.87.92.217 – 10.87.92.21810.87.92.219
5610.87.92.220/3010.87.92.221 – 10.87.92.22210.87.92.223
5710.87.92.224/3010.87.92.225 – 10.87.92.22610.87.92.227
5810.87.92.228/3010.87.92.229 – 10.87.92.23010.87.92.231
5910.87.92.232/3010.87.92.233 – 10.87.92.23410.87.92.235
6010.87.92.236/3010.87.92.237 – 10.87.92.23810.87.92.239
6110.87.92.240/3010.87.92.241 – 10.87.92.24210.87.92.243
6210.87.92.244/3010.87.92.245 – 10.87.92.24610.87.92.247
6310.87.92.248/3010.87.92.249 – 10.87.92.25010.87.92.251
6410.87.92.252/3010.87.92.253 – 10.87.92.25410.87.92.255
6510.87.93.0/3010.87.93.1 – 10.87.93.210.87.93.3
6610.87.93.4/3010.87.93.5 – 10.87.93.610.87.93.7
6710.87.93.8/3010.87.93.9 – 10.87.93.1010.87.93.11
6810.87.93.12/3010.87.93.13 – 10.87.93.1410.87.93.15
6910.87.93.16/3010.87.93.17 – 10.87.93.1810.87.93.19
7010.87.93.20/3010.87.93.21 – 10.87.93.2210.87.93.23
7110.87.93.24/3010.87.93.25 – 10.87.93.2610.87.93.27
7210.87.93.28/3010.87.93.29 – 10.87.93.3010.87.93.31
7310.87.93.32/3010.87.93.33 – 10.87.93.3410.87.93.35
7410.87.93.36/3010.87.93.37 – 10.87.93.3810.87.93.39
7510.87.93.40/3010.87.93.41 – 10.87.93.4210.87.93.43
7610.87.93.44/3010.87.93.45 – 10.87.93.4610.87.93.47
7710.87.93.48/3010.87.93.49 – 10.87.93.5010.87.93.51
7810.87.93.52/3010.87.93.53 – 10.87.93.5410.87.93.55
7910.87.93.56/3010.87.93.57 – 10.87.93.5810.87.93.59
8010.87.93.60/3010.87.93.61 – 10.87.93.6210.87.93.63
8110.87.93.64/3010.87.93.65 – 10.87.93.6610.87.93.67
8210.87.93.68/3010.87.93.69 – 10.87.93.7010.87.93.71
8310.87.93.72/3010.87.93.73 – 10.87.93.7410.87.93.75
8410.87.93.76/3010.87.93.77 – 10.87.93.7810.87.93.79
8510.87.93.80/3010.87.93.81 – 10.87.93.8210.87.93.83
8610.87.93.84/3010.87.93.85 – 10.87.93.8610.87.93.87
8710.87.93.88/3010.87.93.89 – 10.87.93.9010.87.93.91
8810.87.93.92/3010.87.93.93 – 10.87.93.9410.87.93.95
8910.87.93.96/3010.87.93.97 – 10.87.93.9810.87.93.99
9010.87.93.100/3010.87.93.101 – 10.87.93.10210.87.93.103
9110.87.93.104/3010.87.93.105 – 10.87.93.10610.87.93.107
9210.87.93.108/3010.87.93.109 – 10.87.93.11010.87.93.111
9310.87.93.112/3010.87.93.113 – 10.87.93.11410.87.93.115
9410.87.93.116/3010.87.93.117 – 10.87.93.11810.87.93.119
9510.87.93.120/3010.87.93.121 – 10.87.93.12210.87.93.123
9610.87.93.124/3010.87.93.125 – 10.87.93.12610.87.93.127
9710.87.93.128/3010.87.93.129 – 10.87.93.13010.87.93.131
9810.87.93.132/3010.87.93.133 – 10.87.93.13410.87.93.135
9910.87.93.136/3010.87.93.137 – 10.87.93.13810.87.93.139
10010.87.93.140/3010.87.93.141 – 10.87.93.14210.87.93.143
10110.87.93.144/3010.87.93.145 – 10.87.93.14610.87.93.147
10210.87.93.148/3010.87.93.149 – 10.87.93.15010.87.93.151
10310.87.93.152/3010.87.93.153 – 10.87.93.15410.87.93.155
10410.87.93.156/3010.87.93.157 – 10.87.93.15810.87.93.159
10510.87.93.160/3010.87.93.161 – 10.87.93.16210.87.93.163
10610.87.93.164/3010.87.93.165 – 10.87.93.16610.87.93.167
10710.87.93.168/3010.87.93.169 – 10.87.93.17010.87.93.171
10810.87.93.172/3010.87.93.173 – 10.87.93.17410.87.93.175
10910.87.93.176/3010.87.93.177 – 10.87.93.17810.87.93.179
11010.87.93.180/3010.87.93.181 – 10.87.93.18210.87.93.183
11110.87.93.184/3010.87.93.185 – 10.87.93.18610.87.93.187
11210.87.93.188/3010.87.93.189 – 10.87.93.19010.87.93.191
11310.87.93.192/3010.87.93.193 – 10.87.93.19410.87.93.195
11410.87.93.196/3010.87.93.197 – 10.87.93.19810.87.93.199
11510.87.93.200/3010.87.93.201 – 10.87.93.20210.87.93.203
11610.87.93.204/3010.87.93.205 – 10.87.93.20610.87.93.207
11710.87.93.208/3010.87.93.209 – 10.87.93.21010.87.93.211
11810.87.93.212/3010.87.93.213 – 10.87.93.21410.87.93.215
11910.87.93.216/3010.87.93.217 – 10.87.93.21810.87.93.219
12010.87.93.220/3010.87.93.221 – 10.87.93.22210.87.93.223
12110.87.93.224/3010.87.93.225 – 10.87.93.22610.87.93.227
12210.87.93.228/3010.87.93.229 – 10.87.93.23010.87.93.231
12310.87.93.232/3010.87.93.233 – 10.87.93.23410.87.93.235
12410.87.93.236/3010.87.93.237 – 10.87.93.23810.87.93.239
12510.87.93.240/3010.87.93.241 – 10.87.93.24210.87.93.243
12610.87.93.244/3010.87.93.245 – 10.87.93.24610.87.93.247
12710.87.93.248/3010.87.93.249 – 10.87.93.25010.87.93.251
12810.87.93.252/3010.87.93.253 – 10.87.93.25410.87.93.255
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 →