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)10.48.0.0/17
network10.48.0.0/17
broadcast10.48.127.255
first host10.48.0.1
last host10.48.127.254
subnet mask255.255.128.0
wildcard0.0.127.255
addresses32,768
usable hosts32,766
classA
ipcalc 10.48.0.0/17
address00001010.00110000.00000000.00000000
subnet mask11111111.11111111.10000000.00000000
network00001010.00110000.00000000.00000000
broadcast00001010.00110000.01111111.11111111
green = network part, grey = host part
hex0x0a300000
decimal170917888
reverse dns0.0.48.10.in-addr.arpa
ipv4-mapped::ffff:a30:0

/17 split into /24 · 128 subnets

close ×
#networkhost rangebroadcast
110.48.0.0/2410.48.0.1 – 10.48.0.25410.48.0.255
210.48.1.0/2410.48.1.1 – 10.48.1.25410.48.1.255
310.48.2.0/2410.48.2.1 – 10.48.2.25410.48.2.255
410.48.3.0/2410.48.3.1 – 10.48.3.25410.48.3.255
510.48.4.0/2410.48.4.1 – 10.48.4.25410.48.4.255
610.48.5.0/2410.48.5.1 – 10.48.5.25410.48.5.255
710.48.6.0/2410.48.6.1 – 10.48.6.25410.48.6.255
810.48.7.0/2410.48.7.1 – 10.48.7.25410.48.7.255
910.48.8.0/2410.48.8.1 – 10.48.8.25410.48.8.255
1010.48.9.0/2410.48.9.1 – 10.48.9.25410.48.9.255
1110.48.10.0/2410.48.10.1 – 10.48.10.25410.48.10.255
1210.48.11.0/2410.48.11.1 – 10.48.11.25410.48.11.255
1310.48.12.0/2410.48.12.1 – 10.48.12.25410.48.12.255
1410.48.13.0/2410.48.13.1 – 10.48.13.25410.48.13.255
1510.48.14.0/2410.48.14.1 – 10.48.14.25410.48.14.255
1610.48.15.0/2410.48.15.1 – 10.48.15.25410.48.15.255
1710.48.16.0/2410.48.16.1 – 10.48.16.25410.48.16.255
1810.48.17.0/2410.48.17.1 – 10.48.17.25410.48.17.255
1910.48.18.0/2410.48.18.1 – 10.48.18.25410.48.18.255
2010.48.19.0/2410.48.19.1 – 10.48.19.25410.48.19.255
2110.48.20.0/2410.48.20.1 – 10.48.20.25410.48.20.255
2210.48.21.0/2410.48.21.1 – 10.48.21.25410.48.21.255
2310.48.22.0/2410.48.22.1 – 10.48.22.25410.48.22.255
2410.48.23.0/2410.48.23.1 – 10.48.23.25410.48.23.255
2510.48.24.0/2410.48.24.1 – 10.48.24.25410.48.24.255
2610.48.25.0/2410.48.25.1 – 10.48.25.25410.48.25.255
2710.48.26.0/2410.48.26.1 – 10.48.26.25410.48.26.255
2810.48.27.0/2410.48.27.1 – 10.48.27.25410.48.27.255
2910.48.28.0/2410.48.28.1 – 10.48.28.25410.48.28.255
3010.48.29.0/2410.48.29.1 – 10.48.29.25410.48.29.255
3110.48.30.0/2410.48.30.1 – 10.48.30.25410.48.30.255
3210.48.31.0/2410.48.31.1 – 10.48.31.25410.48.31.255
3310.48.32.0/2410.48.32.1 – 10.48.32.25410.48.32.255
3410.48.33.0/2410.48.33.1 – 10.48.33.25410.48.33.255
3510.48.34.0/2410.48.34.1 – 10.48.34.25410.48.34.255
3610.48.35.0/2410.48.35.1 – 10.48.35.25410.48.35.255
3710.48.36.0/2410.48.36.1 – 10.48.36.25410.48.36.255
3810.48.37.0/2410.48.37.1 – 10.48.37.25410.48.37.255
3910.48.38.0/2410.48.38.1 – 10.48.38.25410.48.38.255
4010.48.39.0/2410.48.39.1 – 10.48.39.25410.48.39.255
4110.48.40.0/2410.48.40.1 – 10.48.40.25410.48.40.255
4210.48.41.0/2410.48.41.1 – 10.48.41.25410.48.41.255
4310.48.42.0/2410.48.42.1 – 10.48.42.25410.48.42.255
4410.48.43.0/2410.48.43.1 – 10.48.43.25410.48.43.255
4510.48.44.0/2410.48.44.1 – 10.48.44.25410.48.44.255
4610.48.45.0/2410.48.45.1 – 10.48.45.25410.48.45.255
4710.48.46.0/2410.48.46.1 – 10.48.46.25410.48.46.255
4810.48.47.0/2410.48.47.1 – 10.48.47.25410.48.47.255
4910.48.48.0/2410.48.48.1 – 10.48.48.25410.48.48.255
5010.48.49.0/2410.48.49.1 – 10.48.49.25410.48.49.255
5110.48.50.0/2410.48.50.1 – 10.48.50.25410.48.50.255
5210.48.51.0/2410.48.51.1 – 10.48.51.25410.48.51.255
5310.48.52.0/2410.48.52.1 – 10.48.52.25410.48.52.255
5410.48.53.0/2410.48.53.1 – 10.48.53.25410.48.53.255
5510.48.54.0/2410.48.54.1 – 10.48.54.25410.48.54.255
5610.48.55.0/2410.48.55.1 – 10.48.55.25410.48.55.255
5710.48.56.0/2410.48.56.1 – 10.48.56.25410.48.56.255
5810.48.57.0/2410.48.57.1 – 10.48.57.25410.48.57.255
5910.48.58.0/2410.48.58.1 – 10.48.58.25410.48.58.255
6010.48.59.0/2410.48.59.1 – 10.48.59.25410.48.59.255
6110.48.60.0/2410.48.60.1 – 10.48.60.25410.48.60.255
6210.48.61.0/2410.48.61.1 – 10.48.61.25410.48.61.255
6310.48.62.0/2410.48.62.1 – 10.48.62.25410.48.62.255
6410.48.63.0/2410.48.63.1 – 10.48.63.25410.48.63.255
6510.48.64.0/2410.48.64.1 – 10.48.64.25410.48.64.255
6610.48.65.0/2410.48.65.1 – 10.48.65.25410.48.65.255
6710.48.66.0/2410.48.66.1 – 10.48.66.25410.48.66.255
6810.48.67.0/2410.48.67.1 – 10.48.67.25410.48.67.255
6910.48.68.0/2410.48.68.1 – 10.48.68.25410.48.68.255
7010.48.69.0/2410.48.69.1 – 10.48.69.25410.48.69.255
7110.48.70.0/2410.48.70.1 – 10.48.70.25410.48.70.255
7210.48.71.0/2410.48.71.1 – 10.48.71.25410.48.71.255
7310.48.72.0/2410.48.72.1 – 10.48.72.25410.48.72.255
7410.48.73.0/2410.48.73.1 – 10.48.73.25410.48.73.255
7510.48.74.0/2410.48.74.1 – 10.48.74.25410.48.74.255
7610.48.75.0/2410.48.75.1 – 10.48.75.25410.48.75.255
7710.48.76.0/2410.48.76.1 – 10.48.76.25410.48.76.255
7810.48.77.0/2410.48.77.1 – 10.48.77.25410.48.77.255
7910.48.78.0/2410.48.78.1 – 10.48.78.25410.48.78.255
8010.48.79.0/2410.48.79.1 – 10.48.79.25410.48.79.255
8110.48.80.0/2410.48.80.1 – 10.48.80.25410.48.80.255
8210.48.81.0/2410.48.81.1 – 10.48.81.25410.48.81.255
8310.48.82.0/2410.48.82.1 – 10.48.82.25410.48.82.255
8410.48.83.0/2410.48.83.1 – 10.48.83.25410.48.83.255
8510.48.84.0/2410.48.84.1 – 10.48.84.25410.48.84.255
8610.48.85.0/2410.48.85.1 – 10.48.85.25410.48.85.255
8710.48.86.0/2410.48.86.1 – 10.48.86.25410.48.86.255
8810.48.87.0/2410.48.87.1 – 10.48.87.25410.48.87.255
8910.48.88.0/2410.48.88.1 – 10.48.88.25410.48.88.255
9010.48.89.0/2410.48.89.1 – 10.48.89.25410.48.89.255
9110.48.90.0/2410.48.90.1 – 10.48.90.25410.48.90.255
9210.48.91.0/2410.48.91.1 – 10.48.91.25410.48.91.255
9310.48.92.0/2410.48.92.1 – 10.48.92.25410.48.92.255
9410.48.93.0/2410.48.93.1 – 10.48.93.25410.48.93.255
9510.48.94.0/2410.48.94.1 – 10.48.94.25410.48.94.255
9610.48.95.0/2410.48.95.1 – 10.48.95.25410.48.95.255
9710.48.96.0/2410.48.96.1 – 10.48.96.25410.48.96.255
9810.48.97.0/2410.48.97.1 – 10.48.97.25410.48.97.255
9910.48.98.0/2410.48.98.1 – 10.48.98.25410.48.98.255
10010.48.99.0/2410.48.99.1 – 10.48.99.25410.48.99.255
10110.48.100.0/2410.48.100.1 – 10.48.100.25410.48.100.255
10210.48.101.0/2410.48.101.1 – 10.48.101.25410.48.101.255
10310.48.102.0/2410.48.102.1 – 10.48.102.25410.48.102.255
10410.48.103.0/2410.48.103.1 – 10.48.103.25410.48.103.255
10510.48.104.0/2410.48.104.1 – 10.48.104.25410.48.104.255
10610.48.105.0/2410.48.105.1 – 10.48.105.25410.48.105.255
10710.48.106.0/2410.48.106.1 – 10.48.106.25410.48.106.255
10810.48.107.0/2410.48.107.1 – 10.48.107.25410.48.107.255
10910.48.108.0/2410.48.108.1 – 10.48.108.25410.48.108.255
11010.48.109.0/2410.48.109.1 – 10.48.109.25410.48.109.255
11110.48.110.0/2410.48.110.1 – 10.48.110.25410.48.110.255
11210.48.111.0/2410.48.111.1 – 10.48.111.25410.48.111.255
11310.48.112.0/2410.48.112.1 – 10.48.112.25410.48.112.255
11410.48.113.0/2410.48.113.1 – 10.48.113.25410.48.113.255
11510.48.114.0/2410.48.114.1 – 10.48.114.25410.48.114.255
11610.48.115.0/2410.48.115.1 – 10.48.115.25410.48.115.255
11710.48.116.0/2410.48.116.1 – 10.48.116.25410.48.116.255
11810.48.117.0/2410.48.117.1 – 10.48.117.25410.48.117.255
11910.48.118.0/2410.48.118.1 – 10.48.118.25410.48.118.255
12010.48.119.0/2410.48.119.1 – 10.48.119.25410.48.119.255
12110.48.120.0/2410.48.120.1 – 10.48.120.25410.48.120.255
12210.48.121.0/2410.48.121.1 – 10.48.121.25410.48.121.255
12310.48.122.0/2410.48.122.1 – 10.48.122.25410.48.122.255
12410.48.123.0/2410.48.123.1 – 10.48.123.25410.48.123.255
12510.48.124.0/2410.48.124.1 – 10.48.124.25410.48.124.255
12610.48.125.0/2410.48.125.1 – 10.48.125.25410.48.125.255
12710.48.126.0/2410.48.126.1 – 10.48.126.25410.48.126.255
12810.48.127.0/2410.48.127.1 – 10.48.127.25410.48.127.255
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 →