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)10.13.64.0/19
network10.13.64.0/19
broadcast10.13.95.255
first host10.13.64.1
last host10.13.95.254
subnet mask255.255.224.0
wildcard0.0.31.255
addresses8,192
usable hosts8,190
classA
ipcalc 10.13.64.0/19
address00001010.00001101.01000000.00000000
subnet mask11111111.11111111.11100000.00000000
network00001010.00001101.01000000.00000000
broadcast00001010.00001101.01011111.11111111
green = network part, grey = host part
hex0x0a0d4000
decimal168640512
reverse dns0.64.13.10.in-addr.arpa
ipv4-mapped::ffff:a0d:4000

/19 split into /26 · 128 subnets

close ×
#networkhost rangebroadcast
110.13.64.0/2610.13.64.1 – 10.13.64.6210.13.64.63
210.13.64.64/2610.13.64.65 – 10.13.64.12610.13.64.127
310.13.64.128/2610.13.64.129 – 10.13.64.19010.13.64.191
410.13.64.192/2610.13.64.193 – 10.13.64.25410.13.64.255
510.13.65.0/2610.13.65.1 – 10.13.65.6210.13.65.63
610.13.65.64/2610.13.65.65 – 10.13.65.12610.13.65.127
710.13.65.128/2610.13.65.129 – 10.13.65.19010.13.65.191
810.13.65.192/2610.13.65.193 – 10.13.65.25410.13.65.255
910.13.66.0/2610.13.66.1 – 10.13.66.6210.13.66.63
1010.13.66.64/2610.13.66.65 – 10.13.66.12610.13.66.127
1110.13.66.128/2610.13.66.129 – 10.13.66.19010.13.66.191
1210.13.66.192/2610.13.66.193 – 10.13.66.25410.13.66.255
1310.13.67.0/2610.13.67.1 – 10.13.67.6210.13.67.63
1410.13.67.64/2610.13.67.65 – 10.13.67.12610.13.67.127
1510.13.67.128/2610.13.67.129 – 10.13.67.19010.13.67.191
1610.13.67.192/2610.13.67.193 – 10.13.67.25410.13.67.255
1710.13.68.0/2610.13.68.1 – 10.13.68.6210.13.68.63
1810.13.68.64/2610.13.68.65 – 10.13.68.12610.13.68.127
1910.13.68.128/2610.13.68.129 – 10.13.68.19010.13.68.191
2010.13.68.192/2610.13.68.193 – 10.13.68.25410.13.68.255
2110.13.69.0/2610.13.69.1 – 10.13.69.6210.13.69.63
2210.13.69.64/2610.13.69.65 – 10.13.69.12610.13.69.127
2310.13.69.128/2610.13.69.129 – 10.13.69.19010.13.69.191
2410.13.69.192/2610.13.69.193 – 10.13.69.25410.13.69.255
2510.13.70.0/2610.13.70.1 – 10.13.70.6210.13.70.63
2610.13.70.64/2610.13.70.65 – 10.13.70.12610.13.70.127
2710.13.70.128/2610.13.70.129 – 10.13.70.19010.13.70.191
2810.13.70.192/2610.13.70.193 – 10.13.70.25410.13.70.255
2910.13.71.0/2610.13.71.1 – 10.13.71.6210.13.71.63
3010.13.71.64/2610.13.71.65 – 10.13.71.12610.13.71.127
3110.13.71.128/2610.13.71.129 – 10.13.71.19010.13.71.191
3210.13.71.192/2610.13.71.193 – 10.13.71.25410.13.71.255
3310.13.72.0/2610.13.72.1 – 10.13.72.6210.13.72.63
3410.13.72.64/2610.13.72.65 – 10.13.72.12610.13.72.127
3510.13.72.128/2610.13.72.129 – 10.13.72.19010.13.72.191
3610.13.72.192/2610.13.72.193 – 10.13.72.25410.13.72.255
3710.13.73.0/2610.13.73.1 – 10.13.73.6210.13.73.63
3810.13.73.64/2610.13.73.65 – 10.13.73.12610.13.73.127
3910.13.73.128/2610.13.73.129 – 10.13.73.19010.13.73.191
4010.13.73.192/2610.13.73.193 – 10.13.73.25410.13.73.255
4110.13.74.0/2610.13.74.1 – 10.13.74.6210.13.74.63
4210.13.74.64/2610.13.74.65 – 10.13.74.12610.13.74.127
4310.13.74.128/2610.13.74.129 – 10.13.74.19010.13.74.191
4410.13.74.192/2610.13.74.193 – 10.13.74.25410.13.74.255
4510.13.75.0/2610.13.75.1 – 10.13.75.6210.13.75.63
4610.13.75.64/2610.13.75.65 – 10.13.75.12610.13.75.127
4710.13.75.128/2610.13.75.129 – 10.13.75.19010.13.75.191
4810.13.75.192/2610.13.75.193 – 10.13.75.25410.13.75.255
4910.13.76.0/2610.13.76.1 – 10.13.76.6210.13.76.63
5010.13.76.64/2610.13.76.65 – 10.13.76.12610.13.76.127
5110.13.76.128/2610.13.76.129 – 10.13.76.19010.13.76.191
5210.13.76.192/2610.13.76.193 – 10.13.76.25410.13.76.255
5310.13.77.0/2610.13.77.1 – 10.13.77.6210.13.77.63
5410.13.77.64/2610.13.77.65 – 10.13.77.12610.13.77.127
5510.13.77.128/2610.13.77.129 – 10.13.77.19010.13.77.191
5610.13.77.192/2610.13.77.193 – 10.13.77.25410.13.77.255
5710.13.78.0/2610.13.78.1 – 10.13.78.6210.13.78.63
5810.13.78.64/2610.13.78.65 – 10.13.78.12610.13.78.127
5910.13.78.128/2610.13.78.129 – 10.13.78.19010.13.78.191
6010.13.78.192/2610.13.78.193 – 10.13.78.25410.13.78.255
6110.13.79.0/2610.13.79.1 – 10.13.79.6210.13.79.63
6210.13.79.64/2610.13.79.65 – 10.13.79.12610.13.79.127
6310.13.79.128/2610.13.79.129 – 10.13.79.19010.13.79.191
6410.13.79.192/2610.13.79.193 – 10.13.79.25410.13.79.255
6510.13.80.0/2610.13.80.1 – 10.13.80.6210.13.80.63
6610.13.80.64/2610.13.80.65 – 10.13.80.12610.13.80.127
6710.13.80.128/2610.13.80.129 – 10.13.80.19010.13.80.191
6810.13.80.192/2610.13.80.193 – 10.13.80.25410.13.80.255
6910.13.81.0/2610.13.81.1 – 10.13.81.6210.13.81.63
7010.13.81.64/2610.13.81.65 – 10.13.81.12610.13.81.127
7110.13.81.128/2610.13.81.129 – 10.13.81.19010.13.81.191
7210.13.81.192/2610.13.81.193 – 10.13.81.25410.13.81.255
7310.13.82.0/2610.13.82.1 – 10.13.82.6210.13.82.63
7410.13.82.64/2610.13.82.65 – 10.13.82.12610.13.82.127
7510.13.82.128/2610.13.82.129 – 10.13.82.19010.13.82.191
7610.13.82.192/2610.13.82.193 – 10.13.82.25410.13.82.255
7710.13.83.0/2610.13.83.1 – 10.13.83.6210.13.83.63
7810.13.83.64/2610.13.83.65 – 10.13.83.12610.13.83.127
7910.13.83.128/2610.13.83.129 – 10.13.83.19010.13.83.191
8010.13.83.192/2610.13.83.193 – 10.13.83.25410.13.83.255
8110.13.84.0/2610.13.84.1 – 10.13.84.6210.13.84.63
8210.13.84.64/2610.13.84.65 – 10.13.84.12610.13.84.127
8310.13.84.128/2610.13.84.129 – 10.13.84.19010.13.84.191
8410.13.84.192/2610.13.84.193 – 10.13.84.25410.13.84.255
8510.13.85.0/2610.13.85.1 – 10.13.85.6210.13.85.63
8610.13.85.64/2610.13.85.65 – 10.13.85.12610.13.85.127
8710.13.85.128/2610.13.85.129 – 10.13.85.19010.13.85.191
8810.13.85.192/2610.13.85.193 – 10.13.85.25410.13.85.255
8910.13.86.0/2610.13.86.1 – 10.13.86.6210.13.86.63
9010.13.86.64/2610.13.86.65 – 10.13.86.12610.13.86.127
9110.13.86.128/2610.13.86.129 – 10.13.86.19010.13.86.191
9210.13.86.192/2610.13.86.193 – 10.13.86.25410.13.86.255
9310.13.87.0/2610.13.87.1 – 10.13.87.6210.13.87.63
9410.13.87.64/2610.13.87.65 – 10.13.87.12610.13.87.127
9510.13.87.128/2610.13.87.129 – 10.13.87.19010.13.87.191
9610.13.87.192/2610.13.87.193 – 10.13.87.25410.13.87.255
9710.13.88.0/2610.13.88.1 – 10.13.88.6210.13.88.63
9810.13.88.64/2610.13.88.65 – 10.13.88.12610.13.88.127
9910.13.88.128/2610.13.88.129 – 10.13.88.19010.13.88.191
10010.13.88.192/2610.13.88.193 – 10.13.88.25410.13.88.255
10110.13.89.0/2610.13.89.1 – 10.13.89.6210.13.89.63
10210.13.89.64/2610.13.89.65 – 10.13.89.12610.13.89.127
10310.13.89.128/2610.13.89.129 – 10.13.89.19010.13.89.191
10410.13.89.192/2610.13.89.193 – 10.13.89.25410.13.89.255
10510.13.90.0/2610.13.90.1 – 10.13.90.6210.13.90.63
10610.13.90.64/2610.13.90.65 – 10.13.90.12610.13.90.127
10710.13.90.128/2610.13.90.129 – 10.13.90.19010.13.90.191
10810.13.90.192/2610.13.90.193 – 10.13.90.25410.13.90.255
10910.13.91.0/2610.13.91.1 – 10.13.91.6210.13.91.63
11010.13.91.64/2610.13.91.65 – 10.13.91.12610.13.91.127
11110.13.91.128/2610.13.91.129 – 10.13.91.19010.13.91.191
11210.13.91.192/2610.13.91.193 – 10.13.91.25410.13.91.255
11310.13.92.0/2610.13.92.1 – 10.13.92.6210.13.92.63
11410.13.92.64/2610.13.92.65 – 10.13.92.12610.13.92.127
11510.13.92.128/2610.13.92.129 – 10.13.92.19010.13.92.191
11610.13.92.192/2610.13.92.193 – 10.13.92.25410.13.92.255
11710.13.93.0/2610.13.93.1 – 10.13.93.6210.13.93.63
11810.13.93.64/2610.13.93.65 – 10.13.93.12610.13.93.127
11910.13.93.128/2610.13.93.129 – 10.13.93.19010.13.93.191
12010.13.93.192/2610.13.93.193 – 10.13.93.25410.13.93.255
12110.13.94.0/2610.13.94.1 – 10.13.94.6210.13.94.63
12210.13.94.64/2610.13.94.65 – 10.13.94.12610.13.94.127
12310.13.94.128/2610.13.94.129 – 10.13.94.19010.13.94.191
12410.13.94.192/2610.13.94.193 – 10.13.94.25410.13.94.255
12510.13.95.0/2610.13.95.1 – 10.13.95.6210.13.95.63
12610.13.95.64/2610.13.95.65 – 10.13.95.12610.13.95.127
12710.13.95.128/2610.13.95.129 – 10.13.95.19010.13.95.191
12810.13.95.192/2610.13.95.193 – 10.13.95.25410.13.95.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /19
/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-
/19255.255.224.08,1928,1901
/20255.255.240.04,0964,0942 split →
/21255.255.248.02,0482,0464 split →
/22255.255.252.01,0241,0228 split →
/23255.255.254.051251016 split →
/24255.255.255.025625432 split →
/25255.255.255.12812812664 split →
/26255.255.255.1926462128 split →
/27255.255.255.2243230256 split →
/28255.255.255.2401614512 split →
/29255.255.255.248861,024 split →
/30255.255.255.252422,048 split →
/31255.255.255.254224,096 split →
/32255.255.255.255118,192 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 →