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)10.1.198.0/23
network10.1.198.0/23
broadcast10.1.199.255
first host10.1.198.1
last host10.1.199.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.1.198.0/23
address00001010.00000001.11000110.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.00000001.11000110.00000000
broadcast00001010.00000001.11000111.11111111
green = network part, grey = host part
hex0x0a01c600
decimal167888384
reverse dns0.198.1.10.in-addr.arpa
ipv4-mapped::ffff:a01:c600

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.1.198.0/3010.1.198.1 – 10.1.198.210.1.198.3
210.1.198.4/3010.1.198.5 – 10.1.198.610.1.198.7
310.1.198.8/3010.1.198.9 – 10.1.198.1010.1.198.11
410.1.198.12/3010.1.198.13 – 10.1.198.1410.1.198.15
510.1.198.16/3010.1.198.17 – 10.1.198.1810.1.198.19
610.1.198.20/3010.1.198.21 – 10.1.198.2210.1.198.23
710.1.198.24/3010.1.198.25 – 10.1.198.2610.1.198.27
810.1.198.28/3010.1.198.29 – 10.1.198.3010.1.198.31
910.1.198.32/3010.1.198.33 – 10.1.198.3410.1.198.35
1010.1.198.36/3010.1.198.37 – 10.1.198.3810.1.198.39
1110.1.198.40/3010.1.198.41 – 10.1.198.4210.1.198.43
1210.1.198.44/3010.1.198.45 – 10.1.198.4610.1.198.47
1310.1.198.48/3010.1.198.49 – 10.1.198.5010.1.198.51
1410.1.198.52/3010.1.198.53 – 10.1.198.5410.1.198.55
1510.1.198.56/3010.1.198.57 – 10.1.198.5810.1.198.59
1610.1.198.60/3010.1.198.61 – 10.1.198.6210.1.198.63
1710.1.198.64/3010.1.198.65 – 10.1.198.6610.1.198.67
1810.1.198.68/3010.1.198.69 – 10.1.198.7010.1.198.71
1910.1.198.72/3010.1.198.73 – 10.1.198.7410.1.198.75
2010.1.198.76/3010.1.198.77 – 10.1.198.7810.1.198.79
2110.1.198.80/3010.1.198.81 – 10.1.198.8210.1.198.83
2210.1.198.84/3010.1.198.85 – 10.1.198.8610.1.198.87
2310.1.198.88/3010.1.198.89 – 10.1.198.9010.1.198.91
2410.1.198.92/3010.1.198.93 – 10.1.198.9410.1.198.95
2510.1.198.96/3010.1.198.97 – 10.1.198.9810.1.198.99
2610.1.198.100/3010.1.198.101 – 10.1.198.10210.1.198.103
2710.1.198.104/3010.1.198.105 – 10.1.198.10610.1.198.107
2810.1.198.108/3010.1.198.109 – 10.1.198.11010.1.198.111
2910.1.198.112/3010.1.198.113 – 10.1.198.11410.1.198.115
3010.1.198.116/3010.1.198.117 – 10.1.198.11810.1.198.119
3110.1.198.120/3010.1.198.121 – 10.1.198.12210.1.198.123
3210.1.198.124/3010.1.198.125 – 10.1.198.12610.1.198.127
3310.1.198.128/3010.1.198.129 – 10.1.198.13010.1.198.131
3410.1.198.132/3010.1.198.133 – 10.1.198.13410.1.198.135
3510.1.198.136/3010.1.198.137 – 10.1.198.13810.1.198.139
3610.1.198.140/3010.1.198.141 – 10.1.198.14210.1.198.143
3710.1.198.144/3010.1.198.145 – 10.1.198.14610.1.198.147
3810.1.198.148/3010.1.198.149 – 10.1.198.15010.1.198.151
3910.1.198.152/3010.1.198.153 – 10.1.198.15410.1.198.155
4010.1.198.156/3010.1.198.157 – 10.1.198.15810.1.198.159
4110.1.198.160/3010.1.198.161 – 10.1.198.16210.1.198.163
4210.1.198.164/3010.1.198.165 – 10.1.198.16610.1.198.167
4310.1.198.168/3010.1.198.169 – 10.1.198.17010.1.198.171
4410.1.198.172/3010.1.198.173 – 10.1.198.17410.1.198.175
4510.1.198.176/3010.1.198.177 – 10.1.198.17810.1.198.179
4610.1.198.180/3010.1.198.181 – 10.1.198.18210.1.198.183
4710.1.198.184/3010.1.198.185 – 10.1.198.18610.1.198.187
4810.1.198.188/3010.1.198.189 – 10.1.198.19010.1.198.191
4910.1.198.192/3010.1.198.193 – 10.1.198.19410.1.198.195
5010.1.198.196/3010.1.198.197 – 10.1.198.19810.1.198.199
5110.1.198.200/3010.1.198.201 – 10.1.198.20210.1.198.203
5210.1.198.204/3010.1.198.205 – 10.1.198.20610.1.198.207
5310.1.198.208/3010.1.198.209 – 10.1.198.21010.1.198.211
5410.1.198.212/3010.1.198.213 – 10.1.198.21410.1.198.215
5510.1.198.216/3010.1.198.217 – 10.1.198.21810.1.198.219
5610.1.198.220/3010.1.198.221 – 10.1.198.22210.1.198.223
5710.1.198.224/3010.1.198.225 – 10.1.198.22610.1.198.227
5810.1.198.228/3010.1.198.229 – 10.1.198.23010.1.198.231
5910.1.198.232/3010.1.198.233 – 10.1.198.23410.1.198.235
6010.1.198.236/3010.1.198.237 – 10.1.198.23810.1.198.239
6110.1.198.240/3010.1.198.241 – 10.1.198.24210.1.198.243
6210.1.198.244/3010.1.198.245 – 10.1.198.24610.1.198.247
6310.1.198.248/3010.1.198.249 – 10.1.198.25010.1.198.251
6410.1.198.252/3010.1.198.253 – 10.1.198.25410.1.198.255
6510.1.199.0/3010.1.199.1 – 10.1.199.210.1.199.3
6610.1.199.4/3010.1.199.5 – 10.1.199.610.1.199.7
6710.1.199.8/3010.1.199.9 – 10.1.199.1010.1.199.11
6810.1.199.12/3010.1.199.13 – 10.1.199.1410.1.199.15
6910.1.199.16/3010.1.199.17 – 10.1.199.1810.1.199.19
7010.1.199.20/3010.1.199.21 – 10.1.199.2210.1.199.23
7110.1.199.24/3010.1.199.25 – 10.1.199.2610.1.199.27
7210.1.199.28/3010.1.199.29 – 10.1.199.3010.1.199.31
7310.1.199.32/3010.1.199.33 – 10.1.199.3410.1.199.35
7410.1.199.36/3010.1.199.37 – 10.1.199.3810.1.199.39
7510.1.199.40/3010.1.199.41 – 10.1.199.4210.1.199.43
7610.1.199.44/3010.1.199.45 – 10.1.199.4610.1.199.47
7710.1.199.48/3010.1.199.49 – 10.1.199.5010.1.199.51
7810.1.199.52/3010.1.199.53 – 10.1.199.5410.1.199.55
7910.1.199.56/3010.1.199.57 – 10.1.199.5810.1.199.59
8010.1.199.60/3010.1.199.61 – 10.1.199.6210.1.199.63
8110.1.199.64/3010.1.199.65 – 10.1.199.6610.1.199.67
8210.1.199.68/3010.1.199.69 – 10.1.199.7010.1.199.71
8310.1.199.72/3010.1.199.73 – 10.1.199.7410.1.199.75
8410.1.199.76/3010.1.199.77 – 10.1.199.7810.1.199.79
8510.1.199.80/3010.1.199.81 – 10.1.199.8210.1.199.83
8610.1.199.84/3010.1.199.85 – 10.1.199.8610.1.199.87
8710.1.199.88/3010.1.199.89 – 10.1.199.9010.1.199.91
8810.1.199.92/3010.1.199.93 – 10.1.199.9410.1.199.95
8910.1.199.96/3010.1.199.97 – 10.1.199.9810.1.199.99
9010.1.199.100/3010.1.199.101 – 10.1.199.10210.1.199.103
9110.1.199.104/3010.1.199.105 – 10.1.199.10610.1.199.107
9210.1.199.108/3010.1.199.109 – 10.1.199.11010.1.199.111
9310.1.199.112/3010.1.199.113 – 10.1.199.11410.1.199.115
9410.1.199.116/3010.1.199.117 – 10.1.199.11810.1.199.119
9510.1.199.120/3010.1.199.121 – 10.1.199.12210.1.199.123
9610.1.199.124/3010.1.199.125 – 10.1.199.12610.1.199.127
9710.1.199.128/3010.1.199.129 – 10.1.199.13010.1.199.131
9810.1.199.132/3010.1.199.133 – 10.1.199.13410.1.199.135
9910.1.199.136/3010.1.199.137 – 10.1.199.13810.1.199.139
10010.1.199.140/3010.1.199.141 – 10.1.199.14210.1.199.143
10110.1.199.144/3010.1.199.145 – 10.1.199.14610.1.199.147
10210.1.199.148/3010.1.199.149 – 10.1.199.15010.1.199.151
10310.1.199.152/3010.1.199.153 – 10.1.199.15410.1.199.155
10410.1.199.156/3010.1.199.157 – 10.1.199.15810.1.199.159
10510.1.199.160/3010.1.199.161 – 10.1.199.16210.1.199.163
10610.1.199.164/3010.1.199.165 – 10.1.199.16610.1.199.167
10710.1.199.168/3010.1.199.169 – 10.1.199.17010.1.199.171
10810.1.199.172/3010.1.199.173 – 10.1.199.17410.1.199.175
10910.1.199.176/3010.1.199.177 – 10.1.199.17810.1.199.179
11010.1.199.180/3010.1.199.181 – 10.1.199.18210.1.199.183
11110.1.199.184/3010.1.199.185 – 10.1.199.18610.1.199.187
11210.1.199.188/3010.1.199.189 – 10.1.199.19010.1.199.191
11310.1.199.192/3010.1.199.193 – 10.1.199.19410.1.199.195
11410.1.199.196/3010.1.199.197 – 10.1.199.19810.1.199.199
11510.1.199.200/3010.1.199.201 – 10.1.199.20210.1.199.203
11610.1.199.204/3010.1.199.205 – 10.1.199.20610.1.199.207
11710.1.199.208/3010.1.199.209 – 10.1.199.21010.1.199.211
11810.1.199.212/3010.1.199.213 – 10.1.199.21410.1.199.215
11910.1.199.216/3010.1.199.217 – 10.1.199.21810.1.199.219
12010.1.199.220/3010.1.199.221 – 10.1.199.22210.1.199.223
12110.1.199.224/3010.1.199.225 – 10.1.199.22610.1.199.227
12210.1.199.228/3010.1.199.229 – 10.1.199.23010.1.199.231
12310.1.199.232/3010.1.199.233 – 10.1.199.23410.1.199.235
12410.1.199.236/3010.1.199.237 – 10.1.199.23810.1.199.239
12510.1.199.240/3010.1.199.241 – 10.1.199.24210.1.199.243
12610.1.199.244/3010.1.199.245 – 10.1.199.24610.1.199.247
12710.1.199.248/3010.1.199.249 – 10.1.199.25010.1.199.251
12810.1.199.252/3010.1.199.253 – 10.1.199.25410.1.199.255
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 →