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)10.7.48.0/23
network10.7.48.0/23
broadcast10.7.49.255
first host10.7.48.1
last host10.7.49.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.7.48.0/23
address00001010.00000111.00110000.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000111.00110000.00000000
broadcast00001010.00000111.00110001.11111111
green = network part, grey = host part
hex0x0a073000
decimal168243200
reverse dns0.48.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:3000

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.7.48.0/3010.7.48.1 – 10.7.48.210.7.48.3
210.7.48.4/3010.7.48.5 – 10.7.48.610.7.48.7
310.7.48.8/3010.7.48.9 – 10.7.48.1010.7.48.11
410.7.48.12/3010.7.48.13 – 10.7.48.1410.7.48.15
510.7.48.16/3010.7.48.17 – 10.7.48.1810.7.48.19
610.7.48.20/3010.7.48.21 – 10.7.48.2210.7.48.23
710.7.48.24/3010.7.48.25 – 10.7.48.2610.7.48.27
810.7.48.28/3010.7.48.29 – 10.7.48.3010.7.48.31
910.7.48.32/3010.7.48.33 – 10.7.48.3410.7.48.35
1010.7.48.36/3010.7.48.37 – 10.7.48.3810.7.48.39
1110.7.48.40/3010.7.48.41 – 10.7.48.4210.7.48.43
1210.7.48.44/3010.7.48.45 – 10.7.48.4610.7.48.47
1310.7.48.48/3010.7.48.49 – 10.7.48.5010.7.48.51
1410.7.48.52/3010.7.48.53 – 10.7.48.5410.7.48.55
1510.7.48.56/3010.7.48.57 – 10.7.48.5810.7.48.59
1610.7.48.60/3010.7.48.61 – 10.7.48.6210.7.48.63
1710.7.48.64/3010.7.48.65 – 10.7.48.6610.7.48.67
1810.7.48.68/3010.7.48.69 – 10.7.48.7010.7.48.71
1910.7.48.72/3010.7.48.73 – 10.7.48.7410.7.48.75
2010.7.48.76/3010.7.48.77 – 10.7.48.7810.7.48.79
2110.7.48.80/3010.7.48.81 – 10.7.48.8210.7.48.83
2210.7.48.84/3010.7.48.85 – 10.7.48.8610.7.48.87
2310.7.48.88/3010.7.48.89 – 10.7.48.9010.7.48.91
2410.7.48.92/3010.7.48.93 – 10.7.48.9410.7.48.95
2510.7.48.96/3010.7.48.97 – 10.7.48.9810.7.48.99
2610.7.48.100/3010.7.48.101 – 10.7.48.10210.7.48.103
2710.7.48.104/3010.7.48.105 – 10.7.48.10610.7.48.107
2810.7.48.108/3010.7.48.109 – 10.7.48.11010.7.48.111
2910.7.48.112/3010.7.48.113 – 10.7.48.11410.7.48.115
3010.7.48.116/3010.7.48.117 – 10.7.48.11810.7.48.119
3110.7.48.120/3010.7.48.121 – 10.7.48.12210.7.48.123
3210.7.48.124/3010.7.48.125 – 10.7.48.12610.7.48.127
3310.7.48.128/3010.7.48.129 – 10.7.48.13010.7.48.131
3410.7.48.132/3010.7.48.133 – 10.7.48.13410.7.48.135
3510.7.48.136/3010.7.48.137 – 10.7.48.13810.7.48.139
3610.7.48.140/3010.7.48.141 – 10.7.48.14210.7.48.143
3710.7.48.144/3010.7.48.145 – 10.7.48.14610.7.48.147
3810.7.48.148/3010.7.48.149 – 10.7.48.15010.7.48.151
3910.7.48.152/3010.7.48.153 – 10.7.48.15410.7.48.155
4010.7.48.156/3010.7.48.157 – 10.7.48.15810.7.48.159
4110.7.48.160/3010.7.48.161 – 10.7.48.16210.7.48.163
4210.7.48.164/3010.7.48.165 – 10.7.48.16610.7.48.167
4310.7.48.168/3010.7.48.169 – 10.7.48.17010.7.48.171
4410.7.48.172/3010.7.48.173 – 10.7.48.17410.7.48.175
4510.7.48.176/3010.7.48.177 – 10.7.48.17810.7.48.179
4610.7.48.180/3010.7.48.181 – 10.7.48.18210.7.48.183
4710.7.48.184/3010.7.48.185 – 10.7.48.18610.7.48.187
4810.7.48.188/3010.7.48.189 – 10.7.48.19010.7.48.191
4910.7.48.192/3010.7.48.193 – 10.7.48.19410.7.48.195
5010.7.48.196/3010.7.48.197 – 10.7.48.19810.7.48.199
5110.7.48.200/3010.7.48.201 – 10.7.48.20210.7.48.203
5210.7.48.204/3010.7.48.205 – 10.7.48.20610.7.48.207
5310.7.48.208/3010.7.48.209 – 10.7.48.21010.7.48.211
5410.7.48.212/3010.7.48.213 – 10.7.48.21410.7.48.215
5510.7.48.216/3010.7.48.217 – 10.7.48.21810.7.48.219
5610.7.48.220/3010.7.48.221 – 10.7.48.22210.7.48.223
5710.7.48.224/3010.7.48.225 – 10.7.48.22610.7.48.227
5810.7.48.228/3010.7.48.229 – 10.7.48.23010.7.48.231
5910.7.48.232/3010.7.48.233 – 10.7.48.23410.7.48.235
6010.7.48.236/3010.7.48.237 – 10.7.48.23810.7.48.239
6110.7.48.240/3010.7.48.241 – 10.7.48.24210.7.48.243
6210.7.48.244/3010.7.48.245 – 10.7.48.24610.7.48.247
6310.7.48.248/3010.7.48.249 – 10.7.48.25010.7.48.251
6410.7.48.252/3010.7.48.253 – 10.7.48.25410.7.48.255
6510.7.49.0/3010.7.49.1 – 10.7.49.210.7.49.3
6610.7.49.4/3010.7.49.5 – 10.7.49.610.7.49.7
6710.7.49.8/3010.7.49.9 – 10.7.49.1010.7.49.11
6810.7.49.12/3010.7.49.13 – 10.7.49.1410.7.49.15
6910.7.49.16/3010.7.49.17 – 10.7.49.1810.7.49.19
7010.7.49.20/3010.7.49.21 – 10.7.49.2210.7.49.23
7110.7.49.24/3010.7.49.25 – 10.7.49.2610.7.49.27
7210.7.49.28/3010.7.49.29 – 10.7.49.3010.7.49.31
7310.7.49.32/3010.7.49.33 – 10.7.49.3410.7.49.35
7410.7.49.36/3010.7.49.37 – 10.7.49.3810.7.49.39
7510.7.49.40/3010.7.49.41 – 10.7.49.4210.7.49.43
7610.7.49.44/3010.7.49.45 – 10.7.49.4610.7.49.47
7710.7.49.48/3010.7.49.49 – 10.7.49.5010.7.49.51
7810.7.49.52/3010.7.49.53 – 10.7.49.5410.7.49.55
7910.7.49.56/3010.7.49.57 – 10.7.49.5810.7.49.59
8010.7.49.60/3010.7.49.61 – 10.7.49.6210.7.49.63
8110.7.49.64/3010.7.49.65 – 10.7.49.6610.7.49.67
8210.7.49.68/3010.7.49.69 – 10.7.49.7010.7.49.71
8310.7.49.72/3010.7.49.73 – 10.7.49.7410.7.49.75
8410.7.49.76/3010.7.49.77 – 10.7.49.7810.7.49.79
8510.7.49.80/3010.7.49.81 – 10.7.49.8210.7.49.83
8610.7.49.84/3010.7.49.85 – 10.7.49.8610.7.49.87
8710.7.49.88/3010.7.49.89 – 10.7.49.9010.7.49.91
8810.7.49.92/3010.7.49.93 – 10.7.49.9410.7.49.95
8910.7.49.96/3010.7.49.97 – 10.7.49.9810.7.49.99
9010.7.49.100/3010.7.49.101 – 10.7.49.10210.7.49.103
9110.7.49.104/3010.7.49.105 – 10.7.49.10610.7.49.107
9210.7.49.108/3010.7.49.109 – 10.7.49.11010.7.49.111
9310.7.49.112/3010.7.49.113 – 10.7.49.11410.7.49.115
9410.7.49.116/3010.7.49.117 – 10.7.49.11810.7.49.119
9510.7.49.120/3010.7.49.121 – 10.7.49.12210.7.49.123
9610.7.49.124/3010.7.49.125 – 10.7.49.12610.7.49.127
9710.7.49.128/3010.7.49.129 – 10.7.49.13010.7.49.131
9810.7.49.132/3010.7.49.133 – 10.7.49.13410.7.49.135
9910.7.49.136/3010.7.49.137 – 10.7.49.13810.7.49.139
10010.7.49.140/3010.7.49.141 – 10.7.49.14210.7.49.143
10110.7.49.144/3010.7.49.145 – 10.7.49.14610.7.49.147
10210.7.49.148/3010.7.49.149 – 10.7.49.15010.7.49.151
10310.7.49.152/3010.7.49.153 – 10.7.49.15410.7.49.155
10410.7.49.156/3010.7.49.157 – 10.7.49.15810.7.49.159
10510.7.49.160/3010.7.49.161 – 10.7.49.16210.7.49.163
10610.7.49.164/3010.7.49.165 – 10.7.49.16610.7.49.167
10710.7.49.168/3010.7.49.169 – 10.7.49.17010.7.49.171
10810.7.49.172/3010.7.49.173 – 10.7.49.17410.7.49.175
10910.7.49.176/3010.7.49.177 – 10.7.49.17810.7.49.179
11010.7.49.180/3010.7.49.181 – 10.7.49.18210.7.49.183
11110.7.49.184/3010.7.49.185 – 10.7.49.18610.7.49.187
11210.7.49.188/3010.7.49.189 – 10.7.49.19010.7.49.191
11310.7.49.192/3010.7.49.193 – 10.7.49.19410.7.49.195
11410.7.49.196/3010.7.49.197 – 10.7.49.19810.7.49.199
11510.7.49.200/3010.7.49.201 – 10.7.49.20210.7.49.203
11610.7.49.204/3010.7.49.205 – 10.7.49.20610.7.49.207
11710.7.49.208/3010.7.49.209 – 10.7.49.21010.7.49.211
11810.7.49.212/3010.7.49.213 – 10.7.49.21410.7.49.215
11910.7.49.216/3010.7.49.217 – 10.7.49.21810.7.49.219
12010.7.49.220/3010.7.49.221 – 10.7.49.22210.7.49.223
12110.7.49.224/3010.7.49.225 – 10.7.49.22610.7.49.227
12210.7.49.228/3010.7.49.229 – 10.7.49.23010.7.49.231
12310.7.49.232/3010.7.49.233 – 10.7.49.23410.7.49.235
12410.7.49.236/3010.7.49.237 – 10.7.49.23810.7.49.239
12510.7.49.240/3010.7.49.241 – 10.7.49.24210.7.49.243
12610.7.49.244/3010.7.49.245 – 10.7.49.24610.7.49.247
12710.7.49.248/3010.7.49.249 – 10.7.49.25010.7.49.251
12810.7.49.252/3010.7.49.253 – 10.7.49.25410.7.49.255
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 →