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)10.46.64.0/18
network10.46.64.0/18
broadcast10.46.127.255
first host10.46.64.1
last host10.46.127.254
subnet mask255.255.192.0
wildcard0.0.63.255
addresses16,384
usable hosts16,382
classA
ipcalc 10.46.64.0/18
address00001010.00101110.01000000.00000000
subnet mask11111111.11111111.11000000.00000000
network00001010.00101110.01000000.00000000
broadcast00001010.00101110.01111111.11111111
green = network part, grey = host part
hex0x0a2e4000
decimal170803200
reverse dns0.64.46.10.in-addr.arpa
ipv4-mapped::ffff:a2e:4000

/18 split into /25 · 128 subnets

close ×
#networkhost rangebroadcast
110.46.64.0/2510.46.64.1 – 10.46.64.12610.46.64.127
210.46.64.128/2510.46.64.129 – 10.46.64.25410.46.64.255
310.46.65.0/2510.46.65.1 – 10.46.65.12610.46.65.127
410.46.65.128/2510.46.65.129 – 10.46.65.25410.46.65.255
510.46.66.0/2510.46.66.1 – 10.46.66.12610.46.66.127
610.46.66.128/2510.46.66.129 – 10.46.66.25410.46.66.255
710.46.67.0/2510.46.67.1 – 10.46.67.12610.46.67.127
810.46.67.128/2510.46.67.129 – 10.46.67.25410.46.67.255
910.46.68.0/2510.46.68.1 – 10.46.68.12610.46.68.127
1010.46.68.128/2510.46.68.129 – 10.46.68.25410.46.68.255
1110.46.69.0/2510.46.69.1 – 10.46.69.12610.46.69.127
1210.46.69.128/2510.46.69.129 – 10.46.69.25410.46.69.255
1310.46.70.0/2510.46.70.1 – 10.46.70.12610.46.70.127
1410.46.70.128/2510.46.70.129 – 10.46.70.25410.46.70.255
1510.46.71.0/2510.46.71.1 – 10.46.71.12610.46.71.127
1610.46.71.128/2510.46.71.129 – 10.46.71.25410.46.71.255
1710.46.72.0/2510.46.72.1 – 10.46.72.12610.46.72.127
1810.46.72.128/2510.46.72.129 – 10.46.72.25410.46.72.255
1910.46.73.0/2510.46.73.1 – 10.46.73.12610.46.73.127
2010.46.73.128/2510.46.73.129 – 10.46.73.25410.46.73.255
2110.46.74.0/2510.46.74.1 – 10.46.74.12610.46.74.127
2210.46.74.128/2510.46.74.129 – 10.46.74.25410.46.74.255
2310.46.75.0/2510.46.75.1 – 10.46.75.12610.46.75.127
2410.46.75.128/2510.46.75.129 – 10.46.75.25410.46.75.255
2510.46.76.0/2510.46.76.1 – 10.46.76.12610.46.76.127
2610.46.76.128/2510.46.76.129 – 10.46.76.25410.46.76.255
2710.46.77.0/2510.46.77.1 – 10.46.77.12610.46.77.127
2810.46.77.128/2510.46.77.129 – 10.46.77.25410.46.77.255
2910.46.78.0/2510.46.78.1 – 10.46.78.12610.46.78.127
3010.46.78.128/2510.46.78.129 – 10.46.78.25410.46.78.255
3110.46.79.0/2510.46.79.1 – 10.46.79.12610.46.79.127
3210.46.79.128/2510.46.79.129 – 10.46.79.25410.46.79.255
3310.46.80.0/2510.46.80.1 – 10.46.80.12610.46.80.127
3410.46.80.128/2510.46.80.129 – 10.46.80.25410.46.80.255
3510.46.81.0/2510.46.81.1 – 10.46.81.12610.46.81.127
3610.46.81.128/2510.46.81.129 – 10.46.81.25410.46.81.255
3710.46.82.0/2510.46.82.1 – 10.46.82.12610.46.82.127
3810.46.82.128/2510.46.82.129 – 10.46.82.25410.46.82.255
3910.46.83.0/2510.46.83.1 – 10.46.83.12610.46.83.127
4010.46.83.128/2510.46.83.129 – 10.46.83.25410.46.83.255
4110.46.84.0/2510.46.84.1 – 10.46.84.12610.46.84.127
4210.46.84.128/2510.46.84.129 – 10.46.84.25410.46.84.255
4310.46.85.0/2510.46.85.1 – 10.46.85.12610.46.85.127
4410.46.85.128/2510.46.85.129 – 10.46.85.25410.46.85.255
4510.46.86.0/2510.46.86.1 – 10.46.86.12610.46.86.127
4610.46.86.128/2510.46.86.129 – 10.46.86.25410.46.86.255
4710.46.87.0/2510.46.87.1 – 10.46.87.12610.46.87.127
4810.46.87.128/2510.46.87.129 – 10.46.87.25410.46.87.255
4910.46.88.0/2510.46.88.1 – 10.46.88.12610.46.88.127
5010.46.88.128/2510.46.88.129 – 10.46.88.25410.46.88.255
5110.46.89.0/2510.46.89.1 – 10.46.89.12610.46.89.127
5210.46.89.128/2510.46.89.129 – 10.46.89.25410.46.89.255
5310.46.90.0/2510.46.90.1 – 10.46.90.12610.46.90.127
5410.46.90.128/2510.46.90.129 – 10.46.90.25410.46.90.255
5510.46.91.0/2510.46.91.1 – 10.46.91.12610.46.91.127
5610.46.91.128/2510.46.91.129 – 10.46.91.25410.46.91.255
5710.46.92.0/2510.46.92.1 – 10.46.92.12610.46.92.127
5810.46.92.128/2510.46.92.129 – 10.46.92.25410.46.92.255
5910.46.93.0/2510.46.93.1 – 10.46.93.12610.46.93.127
6010.46.93.128/2510.46.93.129 – 10.46.93.25410.46.93.255
6110.46.94.0/2510.46.94.1 – 10.46.94.12610.46.94.127
6210.46.94.128/2510.46.94.129 – 10.46.94.25410.46.94.255
6310.46.95.0/2510.46.95.1 – 10.46.95.12610.46.95.127
6410.46.95.128/2510.46.95.129 – 10.46.95.25410.46.95.255
6510.46.96.0/2510.46.96.1 – 10.46.96.12610.46.96.127
6610.46.96.128/2510.46.96.129 – 10.46.96.25410.46.96.255
6710.46.97.0/2510.46.97.1 – 10.46.97.12610.46.97.127
6810.46.97.128/2510.46.97.129 – 10.46.97.25410.46.97.255
6910.46.98.0/2510.46.98.1 – 10.46.98.12610.46.98.127
7010.46.98.128/2510.46.98.129 – 10.46.98.25410.46.98.255
7110.46.99.0/2510.46.99.1 – 10.46.99.12610.46.99.127
7210.46.99.128/2510.46.99.129 – 10.46.99.25410.46.99.255
7310.46.100.0/2510.46.100.1 – 10.46.100.12610.46.100.127
7410.46.100.128/2510.46.100.129 – 10.46.100.25410.46.100.255
7510.46.101.0/2510.46.101.1 – 10.46.101.12610.46.101.127
7610.46.101.128/2510.46.101.129 – 10.46.101.25410.46.101.255
7710.46.102.0/2510.46.102.1 – 10.46.102.12610.46.102.127
7810.46.102.128/2510.46.102.129 – 10.46.102.25410.46.102.255
7910.46.103.0/2510.46.103.1 – 10.46.103.12610.46.103.127
8010.46.103.128/2510.46.103.129 – 10.46.103.25410.46.103.255
8110.46.104.0/2510.46.104.1 – 10.46.104.12610.46.104.127
8210.46.104.128/2510.46.104.129 – 10.46.104.25410.46.104.255
8310.46.105.0/2510.46.105.1 – 10.46.105.12610.46.105.127
8410.46.105.128/2510.46.105.129 – 10.46.105.25410.46.105.255
8510.46.106.0/2510.46.106.1 – 10.46.106.12610.46.106.127
8610.46.106.128/2510.46.106.129 – 10.46.106.25410.46.106.255
8710.46.107.0/2510.46.107.1 – 10.46.107.12610.46.107.127
8810.46.107.128/2510.46.107.129 – 10.46.107.25410.46.107.255
8910.46.108.0/2510.46.108.1 – 10.46.108.12610.46.108.127
9010.46.108.128/2510.46.108.129 – 10.46.108.25410.46.108.255
9110.46.109.0/2510.46.109.1 – 10.46.109.12610.46.109.127
9210.46.109.128/2510.46.109.129 – 10.46.109.25410.46.109.255
9310.46.110.0/2510.46.110.1 – 10.46.110.12610.46.110.127
9410.46.110.128/2510.46.110.129 – 10.46.110.25410.46.110.255
9510.46.111.0/2510.46.111.1 – 10.46.111.12610.46.111.127
9610.46.111.128/2510.46.111.129 – 10.46.111.25410.46.111.255
9710.46.112.0/2510.46.112.1 – 10.46.112.12610.46.112.127
9810.46.112.128/2510.46.112.129 – 10.46.112.25410.46.112.255
9910.46.113.0/2510.46.113.1 – 10.46.113.12610.46.113.127
10010.46.113.128/2510.46.113.129 – 10.46.113.25410.46.113.255
10110.46.114.0/2510.46.114.1 – 10.46.114.12610.46.114.127
10210.46.114.128/2510.46.114.129 – 10.46.114.25410.46.114.255
10310.46.115.0/2510.46.115.1 – 10.46.115.12610.46.115.127
10410.46.115.128/2510.46.115.129 – 10.46.115.25410.46.115.255
10510.46.116.0/2510.46.116.1 – 10.46.116.12610.46.116.127
10610.46.116.128/2510.46.116.129 – 10.46.116.25410.46.116.255
10710.46.117.0/2510.46.117.1 – 10.46.117.12610.46.117.127
10810.46.117.128/2510.46.117.129 – 10.46.117.25410.46.117.255
10910.46.118.0/2510.46.118.1 – 10.46.118.12610.46.118.127
11010.46.118.128/2510.46.118.129 – 10.46.118.25410.46.118.255
11110.46.119.0/2510.46.119.1 – 10.46.119.12610.46.119.127
11210.46.119.128/2510.46.119.129 – 10.46.119.25410.46.119.255
11310.46.120.0/2510.46.120.1 – 10.46.120.12610.46.120.127
11410.46.120.128/2510.46.120.129 – 10.46.120.25410.46.120.255
11510.46.121.0/2510.46.121.1 – 10.46.121.12610.46.121.127
11610.46.121.128/2510.46.121.129 – 10.46.121.25410.46.121.255
11710.46.122.0/2510.46.122.1 – 10.46.122.12610.46.122.127
11810.46.122.128/2510.46.122.129 – 10.46.122.25410.46.122.255
11910.46.123.0/2510.46.123.1 – 10.46.123.12610.46.123.127
12010.46.123.128/2510.46.123.129 – 10.46.123.25410.46.123.255
12110.46.124.0/2510.46.124.1 – 10.46.124.12610.46.124.127
12210.46.124.128/2510.46.124.129 – 10.46.124.25410.46.124.255
12310.46.125.0/2510.46.125.1 – 10.46.125.12610.46.125.127
12410.46.125.128/2510.46.125.129 – 10.46.125.25410.46.125.255
12510.46.126.0/2510.46.126.1 – 10.46.126.12610.46.126.127
12610.46.126.128/2510.46.126.129 – 10.46.126.25410.46.126.255
12710.46.127.0/2510.46.127.1 – 10.46.127.12610.46.127.127
12810.46.127.128/2510.46.127.129 – 10.46.127.25410.46.127.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /18
/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-
/18255.255.192.016,38416,3821
/19255.255.224.08,1928,1902 split →
/20255.255.240.04,0964,0944 split →
/21255.255.248.02,0482,0468 split →
/22255.255.252.01,0241,02216 split →
/23255.255.254.051251032 split →
/24255.255.255.025625464 split →
/25255.255.255.128128126128 split →
/26255.255.255.1926462256 split →
/27255.255.255.2243230512 split →
/28255.255.255.24016141,024 split →
/29255.255.255.248862,048 split →
/30255.255.255.252424,096 split →
/31255.255.255.254228,192 split →
/32255.255.255.2551116,384 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 →