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)10.7.158.0/23
network10.7.158.0/23
broadcast10.7.159.255
first host10.7.158.1
last host10.7.159.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.7.158.0/23
address00001010.00000111.10011110.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000111.10011110.00000000
broadcast00001010.00000111.10011111.11111111
green = network part, grey = host part
hex0x0a079e00
decimal168271360
reverse dns0.158.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:9e00

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.7.158.0/3010.7.158.1 – 10.7.158.210.7.158.3
210.7.158.4/3010.7.158.5 – 10.7.158.610.7.158.7
310.7.158.8/3010.7.158.9 – 10.7.158.1010.7.158.11
410.7.158.12/3010.7.158.13 – 10.7.158.1410.7.158.15
510.7.158.16/3010.7.158.17 – 10.7.158.1810.7.158.19
610.7.158.20/3010.7.158.21 – 10.7.158.2210.7.158.23
710.7.158.24/3010.7.158.25 – 10.7.158.2610.7.158.27
810.7.158.28/3010.7.158.29 – 10.7.158.3010.7.158.31
910.7.158.32/3010.7.158.33 – 10.7.158.3410.7.158.35
1010.7.158.36/3010.7.158.37 – 10.7.158.3810.7.158.39
1110.7.158.40/3010.7.158.41 – 10.7.158.4210.7.158.43
1210.7.158.44/3010.7.158.45 – 10.7.158.4610.7.158.47
1310.7.158.48/3010.7.158.49 – 10.7.158.5010.7.158.51
1410.7.158.52/3010.7.158.53 – 10.7.158.5410.7.158.55
1510.7.158.56/3010.7.158.57 – 10.7.158.5810.7.158.59
1610.7.158.60/3010.7.158.61 – 10.7.158.6210.7.158.63
1710.7.158.64/3010.7.158.65 – 10.7.158.6610.7.158.67
1810.7.158.68/3010.7.158.69 – 10.7.158.7010.7.158.71
1910.7.158.72/3010.7.158.73 – 10.7.158.7410.7.158.75
2010.7.158.76/3010.7.158.77 – 10.7.158.7810.7.158.79
2110.7.158.80/3010.7.158.81 – 10.7.158.8210.7.158.83
2210.7.158.84/3010.7.158.85 – 10.7.158.8610.7.158.87
2310.7.158.88/3010.7.158.89 – 10.7.158.9010.7.158.91
2410.7.158.92/3010.7.158.93 – 10.7.158.9410.7.158.95
2510.7.158.96/3010.7.158.97 – 10.7.158.9810.7.158.99
2610.7.158.100/3010.7.158.101 – 10.7.158.10210.7.158.103
2710.7.158.104/3010.7.158.105 – 10.7.158.10610.7.158.107
2810.7.158.108/3010.7.158.109 – 10.7.158.11010.7.158.111
2910.7.158.112/3010.7.158.113 – 10.7.158.11410.7.158.115
3010.7.158.116/3010.7.158.117 – 10.7.158.11810.7.158.119
3110.7.158.120/3010.7.158.121 – 10.7.158.12210.7.158.123
3210.7.158.124/3010.7.158.125 – 10.7.158.12610.7.158.127
3310.7.158.128/3010.7.158.129 – 10.7.158.13010.7.158.131
3410.7.158.132/3010.7.158.133 – 10.7.158.13410.7.158.135
3510.7.158.136/3010.7.158.137 – 10.7.158.13810.7.158.139
3610.7.158.140/3010.7.158.141 – 10.7.158.14210.7.158.143
3710.7.158.144/3010.7.158.145 – 10.7.158.14610.7.158.147
3810.7.158.148/3010.7.158.149 – 10.7.158.15010.7.158.151
3910.7.158.152/3010.7.158.153 – 10.7.158.15410.7.158.155
4010.7.158.156/3010.7.158.157 – 10.7.158.15810.7.158.159
4110.7.158.160/3010.7.158.161 – 10.7.158.16210.7.158.163
4210.7.158.164/3010.7.158.165 – 10.7.158.16610.7.158.167
4310.7.158.168/3010.7.158.169 – 10.7.158.17010.7.158.171
4410.7.158.172/3010.7.158.173 – 10.7.158.17410.7.158.175
4510.7.158.176/3010.7.158.177 – 10.7.158.17810.7.158.179
4610.7.158.180/3010.7.158.181 – 10.7.158.18210.7.158.183
4710.7.158.184/3010.7.158.185 – 10.7.158.18610.7.158.187
4810.7.158.188/3010.7.158.189 – 10.7.158.19010.7.158.191
4910.7.158.192/3010.7.158.193 – 10.7.158.19410.7.158.195
5010.7.158.196/3010.7.158.197 – 10.7.158.19810.7.158.199
5110.7.158.200/3010.7.158.201 – 10.7.158.20210.7.158.203
5210.7.158.204/3010.7.158.205 – 10.7.158.20610.7.158.207
5310.7.158.208/3010.7.158.209 – 10.7.158.21010.7.158.211
5410.7.158.212/3010.7.158.213 – 10.7.158.21410.7.158.215
5510.7.158.216/3010.7.158.217 – 10.7.158.21810.7.158.219
5610.7.158.220/3010.7.158.221 – 10.7.158.22210.7.158.223
5710.7.158.224/3010.7.158.225 – 10.7.158.22610.7.158.227
5810.7.158.228/3010.7.158.229 – 10.7.158.23010.7.158.231
5910.7.158.232/3010.7.158.233 – 10.7.158.23410.7.158.235
6010.7.158.236/3010.7.158.237 – 10.7.158.23810.7.158.239
6110.7.158.240/3010.7.158.241 – 10.7.158.24210.7.158.243
6210.7.158.244/3010.7.158.245 – 10.7.158.24610.7.158.247
6310.7.158.248/3010.7.158.249 – 10.7.158.25010.7.158.251
6410.7.158.252/3010.7.158.253 – 10.7.158.25410.7.158.255
6510.7.159.0/3010.7.159.1 – 10.7.159.210.7.159.3
6610.7.159.4/3010.7.159.5 – 10.7.159.610.7.159.7
6710.7.159.8/3010.7.159.9 – 10.7.159.1010.7.159.11
6810.7.159.12/3010.7.159.13 – 10.7.159.1410.7.159.15
6910.7.159.16/3010.7.159.17 – 10.7.159.1810.7.159.19
7010.7.159.20/3010.7.159.21 – 10.7.159.2210.7.159.23
7110.7.159.24/3010.7.159.25 – 10.7.159.2610.7.159.27
7210.7.159.28/3010.7.159.29 – 10.7.159.3010.7.159.31
7310.7.159.32/3010.7.159.33 – 10.7.159.3410.7.159.35
7410.7.159.36/3010.7.159.37 – 10.7.159.3810.7.159.39
7510.7.159.40/3010.7.159.41 – 10.7.159.4210.7.159.43
7610.7.159.44/3010.7.159.45 – 10.7.159.4610.7.159.47
7710.7.159.48/3010.7.159.49 – 10.7.159.5010.7.159.51
7810.7.159.52/3010.7.159.53 – 10.7.159.5410.7.159.55
7910.7.159.56/3010.7.159.57 – 10.7.159.5810.7.159.59
8010.7.159.60/3010.7.159.61 – 10.7.159.6210.7.159.63
8110.7.159.64/3010.7.159.65 – 10.7.159.6610.7.159.67
8210.7.159.68/3010.7.159.69 – 10.7.159.7010.7.159.71
8310.7.159.72/3010.7.159.73 – 10.7.159.7410.7.159.75
8410.7.159.76/3010.7.159.77 – 10.7.159.7810.7.159.79
8510.7.159.80/3010.7.159.81 – 10.7.159.8210.7.159.83
8610.7.159.84/3010.7.159.85 – 10.7.159.8610.7.159.87
8710.7.159.88/3010.7.159.89 – 10.7.159.9010.7.159.91
8810.7.159.92/3010.7.159.93 – 10.7.159.9410.7.159.95
8910.7.159.96/3010.7.159.97 – 10.7.159.9810.7.159.99
9010.7.159.100/3010.7.159.101 – 10.7.159.10210.7.159.103
9110.7.159.104/3010.7.159.105 – 10.7.159.10610.7.159.107
9210.7.159.108/3010.7.159.109 – 10.7.159.11010.7.159.111
9310.7.159.112/3010.7.159.113 – 10.7.159.11410.7.159.115
9410.7.159.116/3010.7.159.117 – 10.7.159.11810.7.159.119
9510.7.159.120/3010.7.159.121 – 10.7.159.12210.7.159.123
9610.7.159.124/3010.7.159.125 – 10.7.159.12610.7.159.127
9710.7.159.128/3010.7.159.129 – 10.7.159.13010.7.159.131
9810.7.159.132/3010.7.159.133 – 10.7.159.13410.7.159.135
9910.7.159.136/3010.7.159.137 – 10.7.159.13810.7.159.139
10010.7.159.140/3010.7.159.141 – 10.7.159.14210.7.159.143
10110.7.159.144/3010.7.159.145 – 10.7.159.14610.7.159.147
10210.7.159.148/3010.7.159.149 – 10.7.159.15010.7.159.151
10310.7.159.152/3010.7.159.153 – 10.7.159.15410.7.159.155
10410.7.159.156/3010.7.159.157 – 10.7.159.15810.7.159.159
10510.7.159.160/3010.7.159.161 – 10.7.159.16210.7.159.163
10610.7.159.164/3010.7.159.165 – 10.7.159.16610.7.159.167
10710.7.159.168/3010.7.159.169 – 10.7.159.17010.7.159.171
10810.7.159.172/3010.7.159.173 – 10.7.159.17410.7.159.175
10910.7.159.176/3010.7.159.177 – 10.7.159.17810.7.159.179
11010.7.159.180/3010.7.159.181 – 10.7.159.18210.7.159.183
11110.7.159.184/3010.7.159.185 – 10.7.159.18610.7.159.187
11210.7.159.188/3010.7.159.189 – 10.7.159.19010.7.159.191
11310.7.159.192/3010.7.159.193 – 10.7.159.19410.7.159.195
11410.7.159.196/3010.7.159.197 – 10.7.159.19810.7.159.199
11510.7.159.200/3010.7.159.201 – 10.7.159.20210.7.159.203
11610.7.159.204/3010.7.159.205 – 10.7.159.20610.7.159.207
11710.7.159.208/3010.7.159.209 – 10.7.159.21010.7.159.211
11810.7.159.212/3010.7.159.213 – 10.7.159.21410.7.159.215
11910.7.159.216/3010.7.159.217 – 10.7.159.21810.7.159.219
12010.7.159.220/3010.7.159.221 – 10.7.159.22210.7.159.223
12110.7.159.224/3010.7.159.225 – 10.7.159.22610.7.159.227
12210.7.159.228/3010.7.159.229 – 10.7.159.23010.7.159.231
12310.7.159.232/3010.7.159.233 – 10.7.159.23410.7.159.235
12410.7.159.236/3010.7.159.237 – 10.7.159.23810.7.159.239
12510.7.159.240/3010.7.159.241 – 10.7.159.24210.7.159.243
12610.7.159.244/3010.7.159.245 – 10.7.159.24610.7.159.247
12710.7.159.248/3010.7.159.249 – 10.7.159.25010.7.159.251
12810.7.159.252/3010.7.159.253 – 10.7.159.25410.7.159.255
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 →