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)10.7.0.0/17
network10.7.0.0/17
broadcast10.7.127.255
first host10.7.0.1
last host10.7.127.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.7.0.0/17
address00001010.00000111.00000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.00000111.00000000.00000000
broadcast00001010.00000111.01111111.11111111
green = network part, grey = host part
hex0x0a070000
decimal168230912
reverse dns0.0.7.10.in-addr.arpa
ipv4-mapped::ffff:a07:0

/17 split into /24 · 128 subnets

close ×
#networkhost rangebroadcast
110.7.0.0/2410.7.0.1 – 10.7.0.25410.7.0.255
210.7.1.0/2410.7.1.1 – 10.7.1.25410.7.1.255
310.7.2.0/2410.7.2.1 – 10.7.2.25410.7.2.255
410.7.3.0/2410.7.3.1 – 10.7.3.25410.7.3.255
510.7.4.0/2410.7.4.1 – 10.7.4.25410.7.4.255
610.7.5.0/2410.7.5.1 – 10.7.5.25410.7.5.255
710.7.6.0/2410.7.6.1 – 10.7.6.25410.7.6.255
810.7.7.0/2410.7.7.1 – 10.7.7.25410.7.7.255
910.7.8.0/2410.7.8.1 – 10.7.8.25410.7.8.255
1010.7.9.0/2410.7.9.1 – 10.7.9.25410.7.9.255
1110.7.10.0/2410.7.10.1 – 10.7.10.25410.7.10.255
1210.7.11.0/2410.7.11.1 – 10.7.11.25410.7.11.255
1310.7.12.0/2410.7.12.1 – 10.7.12.25410.7.12.255
1410.7.13.0/2410.7.13.1 – 10.7.13.25410.7.13.255
1510.7.14.0/2410.7.14.1 – 10.7.14.25410.7.14.255
1610.7.15.0/2410.7.15.1 – 10.7.15.25410.7.15.255
1710.7.16.0/2410.7.16.1 – 10.7.16.25410.7.16.255
1810.7.17.0/2410.7.17.1 – 10.7.17.25410.7.17.255
1910.7.18.0/2410.7.18.1 – 10.7.18.25410.7.18.255
2010.7.19.0/2410.7.19.1 – 10.7.19.25410.7.19.255
2110.7.20.0/2410.7.20.1 – 10.7.20.25410.7.20.255
2210.7.21.0/2410.7.21.1 – 10.7.21.25410.7.21.255
2310.7.22.0/2410.7.22.1 – 10.7.22.25410.7.22.255
2410.7.23.0/2410.7.23.1 – 10.7.23.25410.7.23.255
2510.7.24.0/2410.7.24.1 – 10.7.24.25410.7.24.255
2610.7.25.0/2410.7.25.1 – 10.7.25.25410.7.25.255
2710.7.26.0/2410.7.26.1 – 10.7.26.25410.7.26.255
2810.7.27.0/2410.7.27.1 – 10.7.27.25410.7.27.255
2910.7.28.0/2410.7.28.1 – 10.7.28.25410.7.28.255
3010.7.29.0/2410.7.29.1 – 10.7.29.25410.7.29.255
3110.7.30.0/2410.7.30.1 – 10.7.30.25410.7.30.255
3210.7.31.0/2410.7.31.1 – 10.7.31.25410.7.31.255
3310.7.32.0/2410.7.32.1 – 10.7.32.25410.7.32.255
3410.7.33.0/2410.7.33.1 – 10.7.33.25410.7.33.255
3510.7.34.0/2410.7.34.1 – 10.7.34.25410.7.34.255
3610.7.35.0/2410.7.35.1 – 10.7.35.25410.7.35.255
3710.7.36.0/2410.7.36.1 – 10.7.36.25410.7.36.255
3810.7.37.0/2410.7.37.1 – 10.7.37.25410.7.37.255
3910.7.38.0/2410.7.38.1 – 10.7.38.25410.7.38.255
4010.7.39.0/2410.7.39.1 – 10.7.39.25410.7.39.255
4110.7.40.0/2410.7.40.1 – 10.7.40.25410.7.40.255
4210.7.41.0/2410.7.41.1 – 10.7.41.25410.7.41.255
4310.7.42.0/2410.7.42.1 – 10.7.42.25410.7.42.255
4410.7.43.0/2410.7.43.1 – 10.7.43.25410.7.43.255
4510.7.44.0/2410.7.44.1 – 10.7.44.25410.7.44.255
4610.7.45.0/2410.7.45.1 – 10.7.45.25410.7.45.255
4710.7.46.0/2410.7.46.1 – 10.7.46.25410.7.46.255
4810.7.47.0/2410.7.47.1 – 10.7.47.25410.7.47.255
4910.7.48.0/2410.7.48.1 – 10.7.48.25410.7.48.255
5010.7.49.0/2410.7.49.1 – 10.7.49.25410.7.49.255
5110.7.50.0/2410.7.50.1 – 10.7.50.25410.7.50.255
5210.7.51.0/2410.7.51.1 – 10.7.51.25410.7.51.255
5310.7.52.0/2410.7.52.1 – 10.7.52.25410.7.52.255
5410.7.53.0/2410.7.53.1 – 10.7.53.25410.7.53.255
5510.7.54.0/2410.7.54.1 – 10.7.54.25410.7.54.255
5610.7.55.0/2410.7.55.1 – 10.7.55.25410.7.55.255
5710.7.56.0/2410.7.56.1 – 10.7.56.25410.7.56.255
5810.7.57.0/2410.7.57.1 – 10.7.57.25410.7.57.255
5910.7.58.0/2410.7.58.1 – 10.7.58.25410.7.58.255
6010.7.59.0/2410.7.59.1 – 10.7.59.25410.7.59.255
6110.7.60.0/2410.7.60.1 – 10.7.60.25410.7.60.255
6210.7.61.0/2410.7.61.1 – 10.7.61.25410.7.61.255
6310.7.62.0/2410.7.62.1 – 10.7.62.25410.7.62.255
6410.7.63.0/2410.7.63.1 – 10.7.63.25410.7.63.255
6510.7.64.0/2410.7.64.1 – 10.7.64.25410.7.64.255
6610.7.65.0/2410.7.65.1 – 10.7.65.25410.7.65.255
6710.7.66.0/2410.7.66.1 – 10.7.66.25410.7.66.255
6810.7.67.0/2410.7.67.1 – 10.7.67.25410.7.67.255
6910.7.68.0/2410.7.68.1 – 10.7.68.25410.7.68.255
7010.7.69.0/2410.7.69.1 – 10.7.69.25410.7.69.255
7110.7.70.0/2410.7.70.1 – 10.7.70.25410.7.70.255
7210.7.71.0/2410.7.71.1 – 10.7.71.25410.7.71.255
7310.7.72.0/2410.7.72.1 – 10.7.72.25410.7.72.255
7410.7.73.0/2410.7.73.1 – 10.7.73.25410.7.73.255
7510.7.74.0/2410.7.74.1 – 10.7.74.25410.7.74.255
7610.7.75.0/2410.7.75.1 – 10.7.75.25410.7.75.255
7710.7.76.0/2410.7.76.1 – 10.7.76.25410.7.76.255
7810.7.77.0/2410.7.77.1 – 10.7.77.25410.7.77.255
7910.7.78.0/2410.7.78.1 – 10.7.78.25410.7.78.255
8010.7.79.0/2410.7.79.1 – 10.7.79.25410.7.79.255
8110.7.80.0/2410.7.80.1 – 10.7.80.25410.7.80.255
8210.7.81.0/2410.7.81.1 – 10.7.81.25410.7.81.255
8310.7.82.0/2410.7.82.1 – 10.7.82.25410.7.82.255
8410.7.83.0/2410.7.83.1 – 10.7.83.25410.7.83.255
8510.7.84.0/2410.7.84.1 – 10.7.84.25410.7.84.255
8610.7.85.0/2410.7.85.1 – 10.7.85.25410.7.85.255
8710.7.86.0/2410.7.86.1 – 10.7.86.25410.7.86.255
8810.7.87.0/2410.7.87.1 – 10.7.87.25410.7.87.255
8910.7.88.0/2410.7.88.1 – 10.7.88.25410.7.88.255
9010.7.89.0/2410.7.89.1 – 10.7.89.25410.7.89.255
9110.7.90.0/2410.7.90.1 – 10.7.90.25410.7.90.255
9210.7.91.0/2410.7.91.1 – 10.7.91.25410.7.91.255
9310.7.92.0/2410.7.92.1 – 10.7.92.25410.7.92.255
9410.7.93.0/2410.7.93.1 – 10.7.93.25410.7.93.255
9510.7.94.0/2410.7.94.1 – 10.7.94.25410.7.94.255
9610.7.95.0/2410.7.95.1 – 10.7.95.25410.7.95.255
9710.7.96.0/2410.7.96.1 – 10.7.96.25410.7.96.255
9810.7.97.0/2410.7.97.1 – 10.7.97.25410.7.97.255
9910.7.98.0/2410.7.98.1 – 10.7.98.25410.7.98.255
10010.7.99.0/2410.7.99.1 – 10.7.99.25410.7.99.255
10110.7.100.0/2410.7.100.1 – 10.7.100.25410.7.100.255
10210.7.101.0/2410.7.101.1 – 10.7.101.25410.7.101.255
10310.7.102.0/2410.7.102.1 – 10.7.102.25410.7.102.255
10410.7.103.0/2410.7.103.1 – 10.7.103.25410.7.103.255
10510.7.104.0/2410.7.104.1 – 10.7.104.25410.7.104.255
10610.7.105.0/2410.7.105.1 – 10.7.105.25410.7.105.255
10710.7.106.0/2410.7.106.1 – 10.7.106.25410.7.106.255
10810.7.107.0/2410.7.107.1 – 10.7.107.25410.7.107.255
10910.7.108.0/2410.7.108.1 – 10.7.108.25410.7.108.255
11010.7.109.0/2410.7.109.1 – 10.7.109.25410.7.109.255
11110.7.110.0/2410.7.110.1 – 10.7.110.25410.7.110.255
11210.7.111.0/2410.7.111.1 – 10.7.111.25410.7.111.255
11310.7.112.0/2410.7.112.1 – 10.7.112.25410.7.112.255
11410.7.113.0/2410.7.113.1 – 10.7.113.25410.7.113.255
11510.7.114.0/2410.7.114.1 – 10.7.114.25410.7.114.255
11610.7.115.0/2410.7.115.1 – 10.7.115.25410.7.115.255
11710.7.116.0/2410.7.116.1 – 10.7.116.25410.7.116.255
11810.7.117.0/2410.7.117.1 – 10.7.117.25410.7.117.255
11910.7.118.0/2410.7.118.1 – 10.7.118.25410.7.118.255
12010.7.119.0/2410.7.119.1 – 10.7.119.25410.7.119.255
12110.7.120.0/2410.7.120.1 – 10.7.120.25410.7.120.255
12210.7.121.0/2410.7.121.1 – 10.7.121.25410.7.121.255
12310.7.122.0/2410.7.122.1 – 10.7.122.25410.7.122.255
12410.7.123.0/2410.7.123.1 – 10.7.123.25410.7.123.255
12510.7.124.0/2410.7.124.1 – 10.7.124.25410.7.124.255
12610.7.125.0/2410.7.125.1 – 10.7.125.25410.7.125.255
12710.7.126.0/2410.7.126.1 – 10.7.126.25410.7.126.255
12810.7.127.0/2410.7.127.1 – 10.7.127.25410.7.127.255
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 →