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)10.60.64.0/18
network10.60.64.0/18
broadcast10.60.127.255
first host10.60.64.1
last host10.60.127.254
subnet mask255.255.192.0
wildcard0.0.63.255
addresses16,384
usable hosts16,382
classA
ipcalc 10.60.64.0/18
address00001010.00111100.01000000.00000000
subnet mask11111111.11111111.11000000.00000000
network00001010.00111100.01000000.00000000
broadcast00001010.00111100.01111111.11111111
green = network part, grey = host part
hex0x0a3c4000
decimal171720704
reverse dns0.64.60.10.in-addr.arpa
ipv4-mapped::ffff:a3c:4000

/18 split into /25 · 128 subnets

close ×
#networkhost rangebroadcast
110.60.64.0/2510.60.64.1 – 10.60.64.12610.60.64.127
210.60.64.128/2510.60.64.129 – 10.60.64.25410.60.64.255
310.60.65.0/2510.60.65.1 – 10.60.65.12610.60.65.127
410.60.65.128/2510.60.65.129 – 10.60.65.25410.60.65.255
510.60.66.0/2510.60.66.1 – 10.60.66.12610.60.66.127
610.60.66.128/2510.60.66.129 – 10.60.66.25410.60.66.255
710.60.67.0/2510.60.67.1 – 10.60.67.12610.60.67.127
810.60.67.128/2510.60.67.129 – 10.60.67.25410.60.67.255
910.60.68.0/2510.60.68.1 – 10.60.68.12610.60.68.127
1010.60.68.128/2510.60.68.129 – 10.60.68.25410.60.68.255
1110.60.69.0/2510.60.69.1 – 10.60.69.12610.60.69.127
1210.60.69.128/2510.60.69.129 – 10.60.69.25410.60.69.255
1310.60.70.0/2510.60.70.1 – 10.60.70.12610.60.70.127
1410.60.70.128/2510.60.70.129 – 10.60.70.25410.60.70.255
1510.60.71.0/2510.60.71.1 – 10.60.71.12610.60.71.127
1610.60.71.128/2510.60.71.129 – 10.60.71.25410.60.71.255
1710.60.72.0/2510.60.72.1 – 10.60.72.12610.60.72.127
1810.60.72.128/2510.60.72.129 – 10.60.72.25410.60.72.255
1910.60.73.0/2510.60.73.1 – 10.60.73.12610.60.73.127
2010.60.73.128/2510.60.73.129 – 10.60.73.25410.60.73.255
2110.60.74.0/2510.60.74.1 – 10.60.74.12610.60.74.127
2210.60.74.128/2510.60.74.129 – 10.60.74.25410.60.74.255
2310.60.75.0/2510.60.75.1 – 10.60.75.12610.60.75.127
2410.60.75.128/2510.60.75.129 – 10.60.75.25410.60.75.255
2510.60.76.0/2510.60.76.1 – 10.60.76.12610.60.76.127
2610.60.76.128/2510.60.76.129 – 10.60.76.25410.60.76.255
2710.60.77.0/2510.60.77.1 – 10.60.77.12610.60.77.127
2810.60.77.128/2510.60.77.129 – 10.60.77.25410.60.77.255
2910.60.78.0/2510.60.78.1 – 10.60.78.12610.60.78.127
3010.60.78.128/2510.60.78.129 – 10.60.78.25410.60.78.255
3110.60.79.0/2510.60.79.1 – 10.60.79.12610.60.79.127
3210.60.79.128/2510.60.79.129 – 10.60.79.25410.60.79.255
3310.60.80.0/2510.60.80.1 – 10.60.80.12610.60.80.127
3410.60.80.128/2510.60.80.129 – 10.60.80.25410.60.80.255
3510.60.81.0/2510.60.81.1 – 10.60.81.12610.60.81.127
3610.60.81.128/2510.60.81.129 – 10.60.81.25410.60.81.255
3710.60.82.0/2510.60.82.1 – 10.60.82.12610.60.82.127
3810.60.82.128/2510.60.82.129 – 10.60.82.25410.60.82.255
3910.60.83.0/2510.60.83.1 – 10.60.83.12610.60.83.127
4010.60.83.128/2510.60.83.129 – 10.60.83.25410.60.83.255
4110.60.84.0/2510.60.84.1 – 10.60.84.12610.60.84.127
4210.60.84.128/2510.60.84.129 – 10.60.84.25410.60.84.255
4310.60.85.0/2510.60.85.1 – 10.60.85.12610.60.85.127
4410.60.85.128/2510.60.85.129 – 10.60.85.25410.60.85.255
4510.60.86.0/2510.60.86.1 – 10.60.86.12610.60.86.127
4610.60.86.128/2510.60.86.129 – 10.60.86.25410.60.86.255
4710.60.87.0/2510.60.87.1 – 10.60.87.12610.60.87.127
4810.60.87.128/2510.60.87.129 – 10.60.87.25410.60.87.255
4910.60.88.0/2510.60.88.1 – 10.60.88.12610.60.88.127
5010.60.88.128/2510.60.88.129 – 10.60.88.25410.60.88.255
5110.60.89.0/2510.60.89.1 – 10.60.89.12610.60.89.127
5210.60.89.128/2510.60.89.129 – 10.60.89.25410.60.89.255
5310.60.90.0/2510.60.90.1 – 10.60.90.12610.60.90.127
5410.60.90.128/2510.60.90.129 – 10.60.90.25410.60.90.255
5510.60.91.0/2510.60.91.1 – 10.60.91.12610.60.91.127
5610.60.91.128/2510.60.91.129 – 10.60.91.25410.60.91.255
5710.60.92.0/2510.60.92.1 – 10.60.92.12610.60.92.127
5810.60.92.128/2510.60.92.129 – 10.60.92.25410.60.92.255
5910.60.93.0/2510.60.93.1 – 10.60.93.12610.60.93.127
6010.60.93.128/2510.60.93.129 – 10.60.93.25410.60.93.255
6110.60.94.0/2510.60.94.1 – 10.60.94.12610.60.94.127
6210.60.94.128/2510.60.94.129 – 10.60.94.25410.60.94.255
6310.60.95.0/2510.60.95.1 – 10.60.95.12610.60.95.127
6410.60.95.128/2510.60.95.129 – 10.60.95.25410.60.95.255
6510.60.96.0/2510.60.96.1 – 10.60.96.12610.60.96.127
6610.60.96.128/2510.60.96.129 – 10.60.96.25410.60.96.255
6710.60.97.0/2510.60.97.1 – 10.60.97.12610.60.97.127
6810.60.97.128/2510.60.97.129 – 10.60.97.25410.60.97.255
6910.60.98.0/2510.60.98.1 – 10.60.98.12610.60.98.127
7010.60.98.128/2510.60.98.129 – 10.60.98.25410.60.98.255
7110.60.99.0/2510.60.99.1 – 10.60.99.12610.60.99.127
7210.60.99.128/2510.60.99.129 – 10.60.99.25410.60.99.255
7310.60.100.0/2510.60.100.1 – 10.60.100.12610.60.100.127
7410.60.100.128/2510.60.100.129 – 10.60.100.25410.60.100.255
7510.60.101.0/2510.60.101.1 – 10.60.101.12610.60.101.127
7610.60.101.128/2510.60.101.129 – 10.60.101.25410.60.101.255
7710.60.102.0/2510.60.102.1 – 10.60.102.12610.60.102.127
7810.60.102.128/2510.60.102.129 – 10.60.102.25410.60.102.255
7910.60.103.0/2510.60.103.1 – 10.60.103.12610.60.103.127
8010.60.103.128/2510.60.103.129 – 10.60.103.25410.60.103.255
8110.60.104.0/2510.60.104.1 – 10.60.104.12610.60.104.127
8210.60.104.128/2510.60.104.129 – 10.60.104.25410.60.104.255
8310.60.105.0/2510.60.105.1 – 10.60.105.12610.60.105.127
8410.60.105.128/2510.60.105.129 – 10.60.105.25410.60.105.255
8510.60.106.0/2510.60.106.1 – 10.60.106.12610.60.106.127
8610.60.106.128/2510.60.106.129 – 10.60.106.25410.60.106.255
8710.60.107.0/2510.60.107.1 – 10.60.107.12610.60.107.127
8810.60.107.128/2510.60.107.129 – 10.60.107.25410.60.107.255
8910.60.108.0/2510.60.108.1 – 10.60.108.12610.60.108.127
9010.60.108.128/2510.60.108.129 – 10.60.108.25410.60.108.255
9110.60.109.0/2510.60.109.1 – 10.60.109.12610.60.109.127
9210.60.109.128/2510.60.109.129 – 10.60.109.25410.60.109.255
9310.60.110.0/2510.60.110.1 – 10.60.110.12610.60.110.127
9410.60.110.128/2510.60.110.129 – 10.60.110.25410.60.110.255
9510.60.111.0/2510.60.111.1 – 10.60.111.12610.60.111.127
9610.60.111.128/2510.60.111.129 – 10.60.111.25410.60.111.255
9710.60.112.0/2510.60.112.1 – 10.60.112.12610.60.112.127
9810.60.112.128/2510.60.112.129 – 10.60.112.25410.60.112.255
9910.60.113.0/2510.60.113.1 – 10.60.113.12610.60.113.127
10010.60.113.128/2510.60.113.129 – 10.60.113.25410.60.113.255
10110.60.114.0/2510.60.114.1 – 10.60.114.12610.60.114.127
10210.60.114.128/2510.60.114.129 – 10.60.114.25410.60.114.255
10310.60.115.0/2510.60.115.1 – 10.60.115.12610.60.115.127
10410.60.115.128/2510.60.115.129 – 10.60.115.25410.60.115.255
10510.60.116.0/2510.60.116.1 – 10.60.116.12610.60.116.127
10610.60.116.128/2510.60.116.129 – 10.60.116.25410.60.116.255
10710.60.117.0/2510.60.117.1 – 10.60.117.12610.60.117.127
10810.60.117.128/2510.60.117.129 – 10.60.117.25410.60.117.255
10910.60.118.0/2510.60.118.1 – 10.60.118.12610.60.118.127
11010.60.118.128/2510.60.118.129 – 10.60.118.25410.60.118.255
11110.60.119.0/2510.60.119.1 – 10.60.119.12610.60.119.127
11210.60.119.128/2510.60.119.129 – 10.60.119.25410.60.119.255
11310.60.120.0/2510.60.120.1 – 10.60.120.12610.60.120.127
11410.60.120.128/2510.60.120.129 – 10.60.120.25410.60.120.255
11510.60.121.0/2510.60.121.1 – 10.60.121.12610.60.121.127
11610.60.121.128/2510.60.121.129 – 10.60.121.25410.60.121.255
11710.60.122.0/2510.60.122.1 – 10.60.122.12610.60.122.127
11810.60.122.128/2510.60.122.129 – 10.60.122.25410.60.122.255
11910.60.123.0/2510.60.123.1 – 10.60.123.12610.60.123.127
12010.60.123.128/2510.60.123.129 – 10.60.123.25410.60.123.255
12110.60.124.0/2510.60.124.1 – 10.60.124.12610.60.124.127
12210.60.124.128/2510.60.124.129 – 10.60.124.25410.60.124.255
12310.60.125.0/2510.60.125.1 – 10.60.125.12610.60.125.127
12410.60.125.128/2510.60.125.129 – 10.60.125.25410.60.125.255
12510.60.126.0/2510.60.126.1 – 10.60.126.12610.60.126.127
12610.60.126.128/2510.60.126.129 – 10.60.126.25410.60.126.255
12710.60.127.0/2510.60.127.1 – 10.60.127.12610.60.127.127
12810.60.127.128/2510.60.127.129 – 10.60.127.25410.60.127.255
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 →