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)10.97.178.0/23
network10.97.178.0/23
broadcast10.97.179.255
first host10.97.178.1
last host10.97.179.254
subnet mask255.255.254.0
wildcard0.0.1.255
addresses512
usable hosts510
classA
ipcalc 10.97.178.0/23
address00001010.01100001.10110010.00000000
subnet mask11111111.11111111.11111110.00000000
network00001010.01100001.10110010.00000000
broadcast00001010.01100001.10110011.11111111
green = network part, grey = host part
hex0x0a61b200
decimal174174720
reverse dns0.178.97.10.in-addr.arpa
ipv4-mapped::ffff:a61:b200

/23 split into /30 · 128 subnets

close ×
#networkhost rangebroadcast
110.97.178.0/3010.97.178.1 – 10.97.178.210.97.178.3
210.97.178.4/3010.97.178.5 – 10.97.178.610.97.178.7
310.97.178.8/3010.97.178.9 – 10.97.178.1010.97.178.11
410.97.178.12/3010.97.178.13 – 10.97.178.1410.97.178.15
510.97.178.16/3010.97.178.17 – 10.97.178.1810.97.178.19
610.97.178.20/3010.97.178.21 – 10.97.178.2210.97.178.23
710.97.178.24/3010.97.178.25 – 10.97.178.2610.97.178.27
810.97.178.28/3010.97.178.29 – 10.97.178.3010.97.178.31
910.97.178.32/3010.97.178.33 – 10.97.178.3410.97.178.35
1010.97.178.36/3010.97.178.37 – 10.97.178.3810.97.178.39
1110.97.178.40/3010.97.178.41 – 10.97.178.4210.97.178.43
1210.97.178.44/3010.97.178.45 – 10.97.178.4610.97.178.47
1310.97.178.48/3010.97.178.49 – 10.97.178.5010.97.178.51
1410.97.178.52/3010.97.178.53 – 10.97.178.5410.97.178.55
1510.97.178.56/3010.97.178.57 – 10.97.178.5810.97.178.59
1610.97.178.60/3010.97.178.61 – 10.97.178.6210.97.178.63
1710.97.178.64/3010.97.178.65 – 10.97.178.6610.97.178.67
1810.97.178.68/3010.97.178.69 – 10.97.178.7010.97.178.71
1910.97.178.72/3010.97.178.73 – 10.97.178.7410.97.178.75
2010.97.178.76/3010.97.178.77 – 10.97.178.7810.97.178.79
2110.97.178.80/3010.97.178.81 – 10.97.178.8210.97.178.83
2210.97.178.84/3010.97.178.85 – 10.97.178.8610.97.178.87
2310.97.178.88/3010.97.178.89 – 10.97.178.9010.97.178.91
2410.97.178.92/3010.97.178.93 – 10.97.178.9410.97.178.95
2510.97.178.96/3010.97.178.97 – 10.97.178.9810.97.178.99
2610.97.178.100/3010.97.178.101 – 10.97.178.10210.97.178.103
2710.97.178.104/3010.97.178.105 – 10.97.178.10610.97.178.107
2810.97.178.108/3010.97.178.109 – 10.97.178.11010.97.178.111
2910.97.178.112/3010.97.178.113 – 10.97.178.11410.97.178.115
3010.97.178.116/3010.97.178.117 – 10.97.178.11810.97.178.119
3110.97.178.120/3010.97.178.121 – 10.97.178.12210.97.178.123
3210.97.178.124/3010.97.178.125 – 10.97.178.12610.97.178.127
3310.97.178.128/3010.97.178.129 – 10.97.178.13010.97.178.131
3410.97.178.132/3010.97.178.133 – 10.97.178.13410.97.178.135
3510.97.178.136/3010.97.178.137 – 10.97.178.13810.97.178.139
3610.97.178.140/3010.97.178.141 – 10.97.178.14210.97.178.143
3710.97.178.144/3010.97.178.145 – 10.97.178.14610.97.178.147
3810.97.178.148/3010.97.178.149 – 10.97.178.15010.97.178.151
3910.97.178.152/3010.97.178.153 – 10.97.178.15410.97.178.155
4010.97.178.156/3010.97.178.157 – 10.97.178.15810.97.178.159
4110.97.178.160/3010.97.178.161 – 10.97.178.16210.97.178.163
4210.97.178.164/3010.97.178.165 – 10.97.178.16610.97.178.167
4310.97.178.168/3010.97.178.169 – 10.97.178.17010.97.178.171
4410.97.178.172/3010.97.178.173 – 10.97.178.17410.97.178.175
4510.97.178.176/3010.97.178.177 – 10.97.178.17810.97.178.179
4610.97.178.180/3010.97.178.181 – 10.97.178.18210.97.178.183
4710.97.178.184/3010.97.178.185 – 10.97.178.18610.97.178.187
4810.97.178.188/3010.97.178.189 – 10.97.178.19010.97.178.191
4910.97.178.192/3010.97.178.193 – 10.97.178.19410.97.178.195
5010.97.178.196/3010.97.178.197 – 10.97.178.19810.97.178.199
5110.97.178.200/3010.97.178.201 – 10.97.178.20210.97.178.203
5210.97.178.204/3010.97.178.205 – 10.97.178.20610.97.178.207
5310.97.178.208/3010.97.178.209 – 10.97.178.21010.97.178.211
5410.97.178.212/3010.97.178.213 – 10.97.178.21410.97.178.215
5510.97.178.216/3010.97.178.217 – 10.97.178.21810.97.178.219
5610.97.178.220/3010.97.178.221 – 10.97.178.22210.97.178.223
5710.97.178.224/3010.97.178.225 – 10.97.178.22610.97.178.227
5810.97.178.228/3010.97.178.229 – 10.97.178.23010.97.178.231
5910.97.178.232/3010.97.178.233 – 10.97.178.23410.97.178.235
6010.97.178.236/3010.97.178.237 – 10.97.178.23810.97.178.239
6110.97.178.240/3010.97.178.241 – 10.97.178.24210.97.178.243
6210.97.178.244/3010.97.178.245 – 10.97.178.24610.97.178.247
6310.97.178.248/3010.97.178.249 – 10.97.178.25010.97.178.251
6410.97.178.252/3010.97.178.253 – 10.97.178.25410.97.178.255
6510.97.179.0/3010.97.179.1 – 10.97.179.210.97.179.3
6610.97.179.4/3010.97.179.5 – 10.97.179.610.97.179.7
6710.97.179.8/3010.97.179.9 – 10.97.179.1010.97.179.11
6810.97.179.12/3010.97.179.13 – 10.97.179.1410.97.179.15
6910.97.179.16/3010.97.179.17 – 10.97.179.1810.97.179.19
7010.97.179.20/3010.97.179.21 – 10.97.179.2210.97.179.23
7110.97.179.24/3010.97.179.25 – 10.97.179.2610.97.179.27
7210.97.179.28/3010.97.179.29 – 10.97.179.3010.97.179.31
7310.97.179.32/3010.97.179.33 – 10.97.179.3410.97.179.35
7410.97.179.36/3010.97.179.37 – 10.97.179.3810.97.179.39
7510.97.179.40/3010.97.179.41 – 10.97.179.4210.97.179.43
7610.97.179.44/3010.97.179.45 – 10.97.179.4610.97.179.47
7710.97.179.48/3010.97.179.49 – 10.97.179.5010.97.179.51
7810.97.179.52/3010.97.179.53 – 10.97.179.5410.97.179.55
7910.97.179.56/3010.97.179.57 – 10.97.179.5810.97.179.59
8010.97.179.60/3010.97.179.61 – 10.97.179.6210.97.179.63
8110.97.179.64/3010.97.179.65 – 10.97.179.6610.97.179.67
8210.97.179.68/3010.97.179.69 – 10.97.179.7010.97.179.71
8310.97.179.72/3010.97.179.73 – 10.97.179.7410.97.179.75
8410.97.179.76/3010.97.179.77 – 10.97.179.7810.97.179.79
8510.97.179.80/3010.97.179.81 – 10.97.179.8210.97.179.83
8610.97.179.84/3010.97.179.85 – 10.97.179.8610.97.179.87
8710.97.179.88/3010.97.179.89 – 10.97.179.9010.97.179.91
8810.97.179.92/3010.97.179.93 – 10.97.179.9410.97.179.95
8910.97.179.96/3010.97.179.97 – 10.97.179.9810.97.179.99
9010.97.179.100/3010.97.179.101 – 10.97.179.10210.97.179.103
9110.97.179.104/3010.97.179.105 – 10.97.179.10610.97.179.107
9210.97.179.108/3010.97.179.109 – 10.97.179.11010.97.179.111
9310.97.179.112/3010.97.179.113 – 10.97.179.11410.97.179.115
9410.97.179.116/3010.97.179.117 – 10.97.179.11810.97.179.119
9510.97.179.120/3010.97.179.121 – 10.97.179.12210.97.179.123
9610.97.179.124/3010.97.179.125 – 10.97.179.12610.97.179.127
9710.97.179.128/3010.97.179.129 – 10.97.179.13010.97.179.131
9810.97.179.132/3010.97.179.133 – 10.97.179.13410.97.179.135
9910.97.179.136/3010.97.179.137 – 10.97.179.13810.97.179.139
10010.97.179.140/3010.97.179.141 – 10.97.179.14210.97.179.143
10110.97.179.144/3010.97.179.145 – 10.97.179.14610.97.179.147
10210.97.179.148/3010.97.179.149 – 10.97.179.15010.97.179.151
10310.97.179.152/3010.97.179.153 – 10.97.179.15410.97.179.155
10410.97.179.156/3010.97.179.157 – 10.97.179.15810.97.179.159
10510.97.179.160/3010.97.179.161 – 10.97.179.16210.97.179.163
10610.97.179.164/3010.97.179.165 – 10.97.179.16610.97.179.167
10710.97.179.168/3010.97.179.169 – 10.97.179.17010.97.179.171
10810.97.179.172/3010.97.179.173 – 10.97.179.17410.97.179.175
10910.97.179.176/3010.97.179.177 – 10.97.179.17810.97.179.179
11010.97.179.180/3010.97.179.181 – 10.97.179.18210.97.179.183
11110.97.179.184/3010.97.179.185 – 10.97.179.18610.97.179.187
11210.97.179.188/3010.97.179.189 – 10.97.179.19010.97.179.191
11310.97.179.192/3010.97.179.193 – 10.97.179.19410.97.179.195
11410.97.179.196/3010.97.179.197 – 10.97.179.19810.97.179.199
11510.97.179.200/3010.97.179.201 – 10.97.179.20210.97.179.203
11610.97.179.204/3010.97.179.205 – 10.97.179.20610.97.179.207
11710.97.179.208/3010.97.179.209 – 10.97.179.21010.97.179.211
11810.97.179.212/3010.97.179.213 – 10.97.179.21410.97.179.215
11910.97.179.216/3010.97.179.217 – 10.97.179.21810.97.179.219
12010.97.179.220/3010.97.179.221 – 10.97.179.22210.97.179.223
12110.97.179.224/3010.97.179.225 – 10.97.179.22610.97.179.227
12210.97.179.228/3010.97.179.229 – 10.97.179.23010.97.179.231
12310.97.179.232/3010.97.179.233 – 10.97.179.23410.97.179.235
12410.97.179.236/3010.97.179.237 – 10.97.179.23810.97.179.239
12510.97.179.240/3010.97.179.241 – 10.97.179.24210.97.179.243
12610.97.179.244/3010.97.179.245 – 10.97.179.24610.97.179.247
12710.97.179.248/3010.97.179.249 – 10.97.179.25010.97.179.251
12810.97.179.252/3010.97.179.253 – 10.97.179.25410.97.179.255
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 →