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)10.232.0.0/17
network10.232.0.0/17
broadcast10.232.127.255
first host10.232.0.1
last host10.232.127.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.232.0.0/17
address00001010.11101000.00000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.11101000.00000000.00000000
broadcast00001010.11101000.01111111.11111111
green = network part, grey = host part
hex0x0ae80000
decimal182976512
reverse dns0.0.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:0

/17 split into /24 · 128 subnets

close ×
#networkhost rangebroadcast
110.232.0.0/2410.232.0.1 – 10.232.0.25410.232.0.255
210.232.1.0/2410.232.1.1 – 10.232.1.25410.232.1.255
310.232.2.0/2410.232.2.1 – 10.232.2.25410.232.2.255
410.232.3.0/2410.232.3.1 – 10.232.3.25410.232.3.255
510.232.4.0/2410.232.4.1 – 10.232.4.25410.232.4.255
610.232.5.0/2410.232.5.1 – 10.232.5.25410.232.5.255
710.232.6.0/2410.232.6.1 – 10.232.6.25410.232.6.255
810.232.7.0/2410.232.7.1 – 10.232.7.25410.232.7.255
910.232.8.0/2410.232.8.1 – 10.232.8.25410.232.8.255
1010.232.9.0/2410.232.9.1 – 10.232.9.25410.232.9.255
1110.232.10.0/2410.232.10.1 – 10.232.10.25410.232.10.255
1210.232.11.0/2410.232.11.1 – 10.232.11.25410.232.11.255
1310.232.12.0/2410.232.12.1 – 10.232.12.25410.232.12.255
1410.232.13.0/2410.232.13.1 – 10.232.13.25410.232.13.255
1510.232.14.0/2410.232.14.1 – 10.232.14.25410.232.14.255
1610.232.15.0/2410.232.15.1 – 10.232.15.25410.232.15.255
1710.232.16.0/2410.232.16.1 – 10.232.16.25410.232.16.255
1810.232.17.0/2410.232.17.1 – 10.232.17.25410.232.17.255
1910.232.18.0/2410.232.18.1 – 10.232.18.25410.232.18.255
2010.232.19.0/2410.232.19.1 – 10.232.19.25410.232.19.255
2110.232.20.0/2410.232.20.1 – 10.232.20.25410.232.20.255
2210.232.21.0/2410.232.21.1 – 10.232.21.25410.232.21.255
2310.232.22.0/2410.232.22.1 – 10.232.22.25410.232.22.255
2410.232.23.0/2410.232.23.1 – 10.232.23.25410.232.23.255
2510.232.24.0/2410.232.24.1 – 10.232.24.25410.232.24.255
2610.232.25.0/2410.232.25.1 – 10.232.25.25410.232.25.255
2710.232.26.0/2410.232.26.1 – 10.232.26.25410.232.26.255
2810.232.27.0/2410.232.27.1 – 10.232.27.25410.232.27.255
2910.232.28.0/2410.232.28.1 – 10.232.28.25410.232.28.255
3010.232.29.0/2410.232.29.1 – 10.232.29.25410.232.29.255
3110.232.30.0/2410.232.30.1 – 10.232.30.25410.232.30.255
3210.232.31.0/2410.232.31.1 – 10.232.31.25410.232.31.255
3310.232.32.0/2410.232.32.1 – 10.232.32.25410.232.32.255
3410.232.33.0/2410.232.33.1 – 10.232.33.25410.232.33.255
3510.232.34.0/2410.232.34.1 – 10.232.34.25410.232.34.255
3610.232.35.0/2410.232.35.1 – 10.232.35.25410.232.35.255
3710.232.36.0/2410.232.36.1 – 10.232.36.25410.232.36.255
3810.232.37.0/2410.232.37.1 – 10.232.37.25410.232.37.255
3910.232.38.0/2410.232.38.1 – 10.232.38.25410.232.38.255
4010.232.39.0/2410.232.39.1 – 10.232.39.25410.232.39.255
4110.232.40.0/2410.232.40.1 – 10.232.40.25410.232.40.255
4210.232.41.0/2410.232.41.1 – 10.232.41.25410.232.41.255
4310.232.42.0/2410.232.42.1 – 10.232.42.25410.232.42.255
4410.232.43.0/2410.232.43.1 – 10.232.43.25410.232.43.255
4510.232.44.0/2410.232.44.1 – 10.232.44.25410.232.44.255
4610.232.45.0/2410.232.45.1 – 10.232.45.25410.232.45.255
4710.232.46.0/2410.232.46.1 – 10.232.46.25410.232.46.255
4810.232.47.0/2410.232.47.1 – 10.232.47.25410.232.47.255
4910.232.48.0/2410.232.48.1 – 10.232.48.25410.232.48.255
5010.232.49.0/2410.232.49.1 – 10.232.49.25410.232.49.255
5110.232.50.0/2410.232.50.1 – 10.232.50.25410.232.50.255
5210.232.51.0/2410.232.51.1 – 10.232.51.25410.232.51.255
5310.232.52.0/2410.232.52.1 – 10.232.52.25410.232.52.255
5410.232.53.0/2410.232.53.1 – 10.232.53.25410.232.53.255
5510.232.54.0/2410.232.54.1 – 10.232.54.25410.232.54.255
5610.232.55.0/2410.232.55.1 – 10.232.55.25410.232.55.255
5710.232.56.0/2410.232.56.1 – 10.232.56.25410.232.56.255
5810.232.57.0/2410.232.57.1 – 10.232.57.25410.232.57.255
5910.232.58.0/2410.232.58.1 – 10.232.58.25410.232.58.255
6010.232.59.0/2410.232.59.1 – 10.232.59.25410.232.59.255
6110.232.60.0/2410.232.60.1 – 10.232.60.25410.232.60.255
6210.232.61.0/2410.232.61.1 – 10.232.61.25410.232.61.255
6310.232.62.0/2410.232.62.1 – 10.232.62.25410.232.62.255
6410.232.63.0/2410.232.63.1 – 10.232.63.25410.232.63.255
6510.232.64.0/2410.232.64.1 – 10.232.64.25410.232.64.255
6610.232.65.0/2410.232.65.1 – 10.232.65.25410.232.65.255
6710.232.66.0/2410.232.66.1 – 10.232.66.25410.232.66.255
6810.232.67.0/2410.232.67.1 – 10.232.67.25410.232.67.255
6910.232.68.0/2410.232.68.1 – 10.232.68.25410.232.68.255
7010.232.69.0/2410.232.69.1 – 10.232.69.25410.232.69.255
7110.232.70.0/2410.232.70.1 – 10.232.70.25410.232.70.255
7210.232.71.0/2410.232.71.1 – 10.232.71.25410.232.71.255
7310.232.72.0/2410.232.72.1 – 10.232.72.25410.232.72.255
7410.232.73.0/2410.232.73.1 – 10.232.73.25410.232.73.255
7510.232.74.0/2410.232.74.1 – 10.232.74.25410.232.74.255
7610.232.75.0/2410.232.75.1 – 10.232.75.25410.232.75.255
7710.232.76.0/2410.232.76.1 – 10.232.76.25410.232.76.255
7810.232.77.0/2410.232.77.1 – 10.232.77.25410.232.77.255
7910.232.78.0/2410.232.78.1 – 10.232.78.25410.232.78.255
8010.232.79.0/2410.232.79.1 – 10.232.79.25410.232.79.255
8110.232.80.0/2410.232.80.1 – 10.232.80.25410.232.80.255
8210.232.81.0/2410.232.81.1 – 10.232.81.25410.232.81.255
8310.232.82.0/2410.232.82.1 – 10.232.82.25410.232.82.255
8410.232.83.0/2410.232.83.1 – 10.232.83.25410.232.83.255
8510.232.84.0/2410.232.84.1 – 10.232.84.25410.232.84.255
8610.232.85.0/2410.232.85.1 – 10.232.85.25410.232.85.255
8710.232.86.0/2410.232.86.1 – 10.232.86.25410.232.86.255
8810.232.87.0/2410.232.87.1 – 10.232.87.25410.232.87.255
8910.232.88.0/2410.232.88.1 – 10.232.88.25410.232.88.255
9010.232.89.0/2410.232.89.1 – 10.232.89.25410.232.89.255
9110.232.90.0/2410.232.90.1 – 10.232.90.25410.232.90.255
9210.232.91.0/2410.232.91.1 – 10.232.91.25410.232.91.255
9310.232.92.0/2410.232.92.1 – 10.232.92.25410.232.92.255
9410.232.93.0/2410.232.93.1 – 10.232.93.25410.232.93.255
9510.232.94.0/2410.232.94.1 – 10.232.94.25410.232.94.255
9610.232.95.0/2410.232.95.1 – 10.232.95.25410.232.95.255
9710.232.96.0/2410.232.96.1 – 10.232.96.25410.232.96.255
9810.232.97.0/2410.232.97.1 – 10.232.97.25410.232.97.255
9910.232.98.0/2410.232.98.1 – 10.232.98.25410.232.98.255
10010.232.99.0/2410.232.99.1 – 10.232.99.25410.232.99.255
10110.232.100.0/2410.232.100.1 – 10.232.100.25410.232.100.255
10210.232.101.0/2410.232.101.1 – 10.232.101.25410.232.101.255
10310.232.102.0/2410.232.102.1 – 10.232.102.25410.232.102.255
10410.232.103.0/2410.232.103.1 – 10.232.103.25410.232.103.255
10510.232.104.0/2410.232.104.1 – 10.232.104.25410.232.104.255
10610.232.105.0/2410.232.105.1 – 10.232.105.25410.232.105.255
10710.232.106.0/2410.232.106.1 – 10.232.106.25410.232.106.255
10810.232.107.0/2410.232.107.1 – 10.232.107.25410.232.107.255
10910.232.108.0/2410.232.108.1 – 10.232.108.25410.232.108.255
11010.232.109.0/2410.232.109.1 – 10.232.109.25410.232.109.255
11110.232.110.0/2410.232.110.1 – 10.232.110.25410.232.110.255
11210.232.111.0/2410.232.111.1 – 10.232.111.25410.232.111.255
11310.232.112.0/2410.232.112.1 – 10.232.112.25410.232.112.255
11410.232.113.0/2410.232.113.1 – 10.232.113.25410.232.113.255
11510.232.114.0/2410.232.114.1 – 10.232.114.25410.232.114.255
11610.232.115.0/2410.232.115.1 – 10.232.115.25410.232.115.255
11710.232.116.0/2410.232.116.1 – 10.232.116.25410.232.116.255
11810.232.117.0/2410.232.117.1 – 10.232.117.25410.232.117.255
11910.232.118.0/2410.232.118.1 – 10.232.118.25410.232.118.255
12010.232.119.0/2410.232.119.1 – 10.232.119.25410.232.119.255
12110.232.120.0/2410.232.120.1 – 10.232.120.25410.232.120.255
12210.232.121.0/2410.232.121.1 – 10.232.121.25410.232.121.255
12310.232.122.0/2410.232.122.1 – 10.232.122.25410.232.122.255
12410.232.123.0/2410.232.123.1 – 10.232.123.25410.232.123.255
12510.232.124.0/2410.232.124.1 – 10.232.124.25410.232.124.255
12610.232.125.0/2410.232.125.1 – 10.232.125.25410.232.125.255
12710.232.126.0/2410.232.126.1 – 10.232.126.25410.232.126.255
12810.232.127.0/2410.232.127.1 – 10.232.127.25410.232.127.255
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 →