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)10.75.0.0/17
network10.75.0.0/17
broadcast10.75.127.255
first host10.75.0.1
last host10.75.127.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.75.0.0/17
address00001010.01001011.00000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.01001011.00000000.00000000
broadcast00001010.01001011.01111111.11111111
green = network part, grey = host part
hex0x0a4b0000
decimal172687360
reverse dns0.0.75.10.in-addr.arpa
ipv4-mapped::ffff:a4b:0

/17 split into /24 · 128 subnets

close ×
#networkhost rangebroadcast
110.75.0.0/2410.75.0.1 – 10.75.0.25410.75.0.255
210.75.1.0/2410.75.1.1 – 10.75.1.25410.75.1.255
310.75.2.0/2410.75.2.1 – 10.75.2.25410.75.2.255
410.75.3.0/2410.75.3.1 – 10.75.3.25410.75.3.255
510.75.4.0/2410.75.4.1 – 10.75.4.25410.75.4.255
610.75.5.0/2410.75.5.1 – 10.75.5.25410.75.5.255
710.75.6.0/2410.75.6.1 – 10.75.6.25410.75.6.255
810.75.7.0/2410.75.7.1 – 10.75.7.25410.75.7.255
910.75.8.0/2410.75.8.1 – 10.75.8.25410.75.8.255
1010.75.9.0/2410.75.9.1 – 10.75.9.25410.75.9.255
1110.75.10.0/2410.75.10.1 – 10.75.10.25410.75.10.255
1210.75.11.0/2410.75.11.1 – 10.75.11.25410.75.11.255
1310.75.12.0/2410.75.12.1 – 10.75.12.25410.75.12.255
1410.75.13.0/2410.75.13.1 – 10.75.13.25410.75.13.255
1510.75.14.0/2410.75.14.1 – 10.75.14.25410.75.14.255
1610.75.15.0/2410.75.15.1 – 10.75.15.25410.75.15.255
1710.75.16.0/2410.75.16.1 – 10.75.16.25410.75.16.255
1810.75.17.0/2410.75.17.1 – 10.75.17.25410.75.17.255
1910.75.18.0/2410.75.18.1 – 10.75.18.25410.75.18.255
2010.75.19.0/2410.75.19.1 – 10.75.19.25410.75.19.255
2110.75.20.0/2410.75.20.1 – 10.75.20.25410.75.20.255
2210.75.21.0/2410.75.21.1 – 10.75.21.25410.75.21.255
2310.75.22.0/2410.75.22.1 – 10.75.22.25410.75.22.255
2410.75.23.0/2410.75.23.1 – 10.75.23.25410.75.23.255
2510.75.24.0/2410.75.24.1 – 10.75.24.25410.75.24.255
2610.75.25.0/2410.75.25.1 – 10.75.25.25410.75.25.255
2710.75.26.0/2410.75.26.1 – 10.75.26.25410.75.26.255
2810.75.27.0/2410.75.27.1 – 10.75.27.25410.75.27.255
2910.75.28.0/2410.75.28.1 – 10.75.28.25410.75.28.255
3010.75.29.0/2410.75.29.1 – 10.75.29.25410.75.29.255
3110.75.30.0/2410.75.30.1 – 10.75.30.25410.75.30.255
3210.75.31.0/2410.75.31.1 – 10.75.31.25410.75.31.255
3310.75.32.0/2410.75.32.1 – 10.75.32.25410.75.32.255
3410.75.33.0/2410.75.33.1 – 10.75.33.25410.75.33.255
3510.75.34.0/2410.75.34.1 – 10.75.34.25410.75.34.255
3610.75.35.0/2410.75.35.1 – 10.75.35.25410.75.35.255
3710.75.36.0/2410.75.36.1 – 10.75.36.25410.75.36.255
3810.75.37.0/2410.75.37.1 – 10.75.37.25410.75.37.255
3910.75.38.0/2410.75.38.1 – 10.75.38.25410.75.38.255
4010.75.39.0/2410.75.39.1 – 10.75.39.25410.75.39.255
4110.75.40.0/2410.75.40.1 – 10.75.40.25410.75.40.255
4210.75.41.0/2410.75.41.1 – 10.75.41.25410.75.41.255
4310.75.42.0/2410.75.42.1 – 10.75.42.25410.75.42.255
4410.75.43.0/2410.75.43.1 – 10.75.43.25410.75.43.255
4510.75.44.0/2410.75.44.1 – 10.75.44.25410.75.44.255
4610.75.45.0/2410.75.45.1 – 10.75.45.25410.75.45.255
4710.75.46.0/2410.75.46.1 – 10.75.46.25410.75.46.255
4810.75.47.0/2410.75.47.1 – 10.75.47.25410.75.47.255
4910.75.48.0/2410.75.48.1 – 10.75.48.25410.75.48.255
5010.75.49.0/2410.75.49.1 – 10.75.49.25410.75.49.255
5110.75.50.0/2410.75.50.1 – 10.75.50.25410.75.50.255
5210.75.51.0/2410.75.51.1 – 10.75.51.25410.75.51.255
5310.75.52.0/2410.75.52.1 – 10.75.52.25410.75.52.255
5410.75.53.0/2410.75.53.1 – 10.75.53.25410.75.53.255
5510.75.54.0/2410.75.54.1 – 10.75.54.25410.75.54.255
5610.75.55.0/2410.75.55.1 – 10.75.55.25410.75.55.255
5710.75.56.0/2410.75.56.1 – 10.75.56.25410.75.56.255
5810.75.57.0/2410.75.57.1 – 10.75.57.25410.75.57.255
5910.75.58.0/2410.75.58.1 – 10.75.58.25410.75.58.255
6010.75.59.0/2410.75.59.1 – 10.75.59.25410.75.59.255
6110.75.60.0/2410.75.60.1 – 10.75.60.25410.75.60.255
6210.75.61.0/2410.75.61.1 – 10.75.61.25410.75.61.255
6310.75.62.0/2410.75.62.1 – 10.75.62.25410.75.62.255
6410.75.63.0/2410.75.63.1 – 10.75.63.25410.75.63.255
6510.75.64.0/2410.75.64.1 – 10.75.64.25410.75.64.255
6610.75.65.0/2410.75.65.1 – 10.75.65.25410.75.65.255
6710.75.66.0/2410.75.66.1 – 10.75.66.25410.75.66.255
6810.75.67.0/2410.75.67.1 – 10.75.67.25410.75.67.255
6910.75.68.0/2410.75.68.1 – 10.75.68.25410.75.68.255
7010.75.69.0/2410.75.69.1 – 10.75.69.25410.75.69.255
7110.75.70.0/2410.75.70.1 – 10.75.70.25410.75.70.255
7210.75.71.0/2410.75.71.1 – 10.75.71.25410.75.71.255
7310.75.72.0/2410.75.72.1 – 10.75.72.25410.75.72.255
7410.75.73.0/2410.75.73.1 – 10.75.73.25410.75.73.255
7510.75.74.0/2410.75.74.1 – 10.75.74.25410.75.74.255
7610.75.75.0/2410.75.75.1 – 10.75.75.25410.75.75.255
7710.75.76.0/2410.75.76.1 – 10.75.76.25410.75.76.255
7810.75.77.0/2410.75.77.1 – 10.75.77.25410.75.77.255
7910.75.78.0/2410.75.78.1 – 10.75.78.25410.75.78.255
8010.75.79.0/2410.75.79.1 – 10.75.79.25410.75.79.255
8110.75.80.0/2410.75.80.1 – 10.75.80.25410.75.80.255
8210.75.81.0/2410.75.81.1 – 10.75.81.25410.75.81.255
8310.75.82.0/2410.75.82.1 – 10.75.82.25410.75.82.255
8410.75.83.0/2410.75.83.1 – 10.75.83.25410.75.83.255
8510.75.84.0/2410.75.84.1 – 10.75.84.25410.75.84.255
8610.75.85.0/2410.75.85.1 – 10.75.85.25410.75.85.255
8710.75.86.0/2410.75.86.1 – 10.75.86.25410.75.86.255
8810.75.87.0/2410.75.87.1 – 10.75.87.25410.75.87.255
8910.75.88.0/2410.75.88.1 – 10.75.88.25410.75.88.255
9010.75.89.0/2410.75.89.1 – 10.75.89.25410.75.89.255
9110.75.90.0/2410.75.90.1 – 10.75.90.25410.75.90.255
9210.75.91.0/2410.75.91.1 – 10.75.91.25410.75.91.255
9310.75.92.0/2410.75.92.1 – 10.75.92.25410.75.92.255
9410.75.93.0/2410.75.93.1 – 10.75.93.25410.75.93.255
9510.75.94.0/2410.75.94.1 – 10.75.94.25410.75.94.255
9610.75.95.0/2410.75.95.1 – 10.75.95.25410.75.95.255
9710.75.96.0/2410.75.96.1 – 10.75.96.25410.75.96.255
9810.75.97.0/2410.75.97.1 – 10.75.97.25410.75.97.255
9910.75.98.0/2410.75.98.1 – 10.75.98.25410.75.98.255
10010.75.99.0/2410.75.99.1 – 10.75.99.25410.75.99.255
10110.75.100.0/2410.75.100.1 – 10.75.100.25410.75.100.255
10210.75.101.0/2410.75.101.1 – 10.75.101.25410.75.101.255
10310.75.102.0/2410.75.102.1 – 10.75.102.25410.75.102.255
10410.75.103.0/2410.75.103.1 – 10.75.103.25410.75.103.255
10510.75.104.0/2410.75.104.1 – 10.75.104.25410.75.104.255
10610.75.105.0/2410.75.105.1 – 10.75.105.25410.75.105.255
10710.75.106.0/2410.75.106.1 – 10.75.106.25410.75.106.255
10810.75.107.0/2410.75.107.1 – 10.75.107.25410.75.107.255
10910.75.108.0/2410.75.108.1 – 10.75.108.25410.75.108.255
11010.75.109.0/2410.75.109.1 – 10.75.109.25410.75.109.255
11110.75.110.0/2410.75.110.1 – 10.75.110.25410.75.110.255
11210.75.111.0/2410.75.111.1 – 10.75.111.25410.75.111.255
11310.75.112.0/2410.75.112.1 – 10.75.112.25410.75.112.255
11410.75.113.0/2410.75.113.1 – 10.75.113.25410.75.113.255
11510.75.114.0/2410.75.114.1 – 10.75.114.25410.75.114.255
11610.75.115.0/2410.75.115.1 – 10.75.115.25410.75.115.255
11710.75.116.0/2410.75.116.1 – 10.75.116.25410.75.116.255
11810.75.117.0/2410.75.117.1 – 10.75.117.25410.75.117.255
11910.75.118.0/2410.75.118.1 – 10.75.118.25410.75.118.255
12010.75.119.0/2410.75.119.1 – 10.75.119.25410.75.119.255
12110.75.120.0/2410.75.120.1 – 10.75.120.25410.75.120.255
12210.75.121.0/2410.75.121.1 – 10.75.121.25410.75.121.255
12310.75.122.0/2410.75.122.1 – 10.75.122.25410.75.122.255
12410.75.123.0/2410.75.123.1 – 10.75.123.25410.75.123.255
12510.75.124.0/2410.75.124.1 – 10.75.124.25410.75.124.255
12610.75.125.0/2410.75.125.1 – 10.75.125.25410.75.125.255
12710.75.126.0/2410.75.126.1 – 10.75.126.25410.75.126.255
12810.75.127.0/2410.75.127.1 – 10.75.127.25410.75.127.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /17
/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-
/17255.255.128.032,76832,7661
/18255.255.192.016,38416,3822 split →
/19255.255.224.08,1928,1904 split →
/20255.255.240.04,0964,0948 split →
/21255.255.248.02,0482,04616 split →
/22255.255.252.01,0241,02232 split →
/23255.255.254.051251064 split →
/24255.255.255.0256254128 split →
/25255.255.255.128128126256 split →
/26255.255.255.1926462512 split →
/27255.255.255.22432301,024 split →
/28255.255.255.24016142,048 split →
/29255.255.255.248864,096 split →
/30255.255.255.252428,192 split →
/31255.255.255.2542216,384 split →
/32255.255.255.2551132,768 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 →