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)10.53.0.0/18
network10.53.0.0/18
broadcast10.53.63.255
first host10.53.0.1
last host10.53.63.254
subnet mask255.255.192.0
wildcard0.0.63.255
addresses16,384
usable hosts16,382
classA
ipcalc 10.53.0.0/18
address00001010.00110101.00000000.00000000
subnet mask11111111.11111111.11000000.00000000
network00001010.00110101.00000000.00000000
broadcast00001010.00110101.00111111.11111111
green = network part, grey = host part
hex0x0a350000
decimal171245568
reverse dns0.0.53.10.in-addr.arpa
ipv4-mapped::ffff:a35:0

/18 split into /25 · 128 subnets

close ×
#networkhost rangebroadcast
110.53.0.0/2510.53.0.1 – 10.53.0.12610.53.0.127
210.53.0.128/2510.53.0.129 – 10.53.0.25410.53.0.255
310.53.1.0/2510.53.1.1 – 10.53.1.12610.53.1.127
410.53.1.128/2510.53.1.129 – 10.53.1.25410.53.1.255
510.53.2.0/2510.53.2.1 – 10.53.2.12610.53.2.127
610.53.2.128/2510.53.2.129 – 10.53.2.25410.53.2.255
710.53.3.0/2510.53.3.1 – 10.53.3.12610.53.3.127
810.53.3.128/2510.53.3.129 – 10.53.3.25410.53.3.255
910.53.4.0/2510.53.4.1 – 10.53.4.12610.53.4.127
1010.53.4.128/2510.53.4.129 – 10.53.4.25410.53.4.255
1110.53.5.0/2510.53.5.1 – 10.53.5.12610.53.5.127
1210.53.5.128/2510.53.5.129 – 10.53.5.25410.53.5.255
1310.53.6.0/2510.53.6.1 – 10.53.6.12610.53.6.127
1410.53.6.128/2510.53.6.129 – 10.53.6.25410.53.6.255
1510.53.7.0/2510.53.7.1 – 10.53.7.12610.53.7.127
1610.53.7.128/2510.53.7.129 – 10.53.7.25410.53.7.255
1710.53.8.0/2510.53.8.1 – 10.53.8.12610.53.8.127
1810.53.8.128/2510.53.8.129 – 10.53.8.25410.53.8.255
1910.53.9.0/2510.53.9.1 – 10.53.9.12610.53.9.127
2010.53.9.128/2510.53.9.129 – 10.53.9.25410.53.9.255
2110.53.10.0/2510.53.10.1 – 10.53.10.12610.53.10.127
2210.53.10.128/2510.53.10.129 – 10.53.10.25410.53.10.255
2310.53.11.0/2510.53.11.1 – 10.53.11.12610.53.11.127
2410.53.11.128/2510.53.11.129 – 10.53.11.25410.53.11.255
2510.53.12.0/2510.53.12.1 – 10.53.12.12610.53.12.127
2610.53.12.128/2510.53.12.129 – 10.53.12.25410.53.12.255
2710.53.13.0/2510.53.13.1 – 10.53.13.12610.53.13.127
2810.53.13.128/2510.53.13.129 – 10.53.13.25410.53.13.255
2910.53.14.0/2510.53.14.1 – 10.53.14.12610.53.14.127
3010.53.14.128/2510.53.14.129 – 10.53.14.25410.53.14.255
3110.53.15.0/2510.53.15.1 – 10.53.15.12610.53.15.127
3210.53.15.128/2510.53.15.129 – 10.53.15.25410.53.15.255
3310.53.16.0/2510.53.16.1 – 10.53.16.12610.53.16.127
3410.53.16.128/2510.53.16.129 – 10.53.16.25410.53.16.255
3510.53.17.0/2510.53.17.1 – 10.53.17.12610.53.17.127
3610.53.17.128/2510.53.17.129 – 10.53.17.25410.53.17.255
3710.53.18.0/2510.53.18.1 – 10.53.18.12610.53.18.127
3810.53.18.128/2510.53.18.129 – 10.53.18.25410.53.18.255
3910.53.19.0/2510.53.19.1 – 10.53.19.12610.53.19.127
4010.53.19.128/2510.53.19.129 – 10.53.19.25410.53.19.255
4110.53.20.0/2510.53.20.1 – 10.53.20.12610.53.20.127
4210.53.20.128/2510.53.20.129 – 10.53.20.25410.53.20.255
4310.53.21.0/2510.53.21.1 – 10.53.21.12610.53.21.127
4410.53.21.128/2510.53.21.129 – 10.53.21.25410.53.21.255
4510.53.22.0/2510.53.22.1 – 10.53.22.12610.53.22.127
4610.53.22.128/2510.53.22.129 – 10.53.22.25410.53.22.255
4710.53.23.0/2510.53.23.1 – 10.53.23.12610.53.23.127
4810.53.23.128/2510.53.23.129 – 10.53.23.25410.53.23.255
4910.53.24.0/2510.53.24.1 – 10.53.24.12610.53.24.127
5010.53.24.128/2510.53.24.129 – 10.53.24.25410.53.24.255
5110.53.25.0/2510.53.25.1 – 10.53.25.12610.53.25.127
5210.53.25.128/2510.53.25.129 – 10.53.25.25410.53.25.255
5310.53.26.0/2510.53.26.1 – 10.53.26.12610.53.26.127
5410.53.26.128/2510.53.26.129 – 10.53.26.25410.53.26.255
5510.53.27.0/2510.53.27.1 – 10.53.27.12610.53.27.127
5610.53.27.128/2510.53.27.129 – 10.53.27.25410.53.27.255
5710.53.28.0/2510.53.28.1 – 10.53.28.12610.53.28.127
5810.53.28.128/2510.53.28.129 – 10.53.28.25410.53.28.255
5910.53.29.0/2510.53.29.1 – 10.53.29.12610.53.29.127
6010.53.29.128/2510.53.29.129 – 10.53.29.25410.53.29.255
6110.53.30.0/2510.53.30.1 – 10.53.30.12610.53.30.127
6210.53.30.128/2510.53.30.129 – 10.53.30.25410.53.30.255
6310.53.31.0/2510.53.31.1 – 10.53.31.12610.53.31.127
6410.53.31.128/2510.53.31.129 – 10.53.31.25410.53.31.255
6510.53.32.0/2510.53.32.1 – 10.53.32.12610.53.32.127
6610.53.32.128/2510.53.32.129 – 10.53.32.25410.53.32.255
6710.53.33.0/2510.53.33.1 – 10.53.33.12610.53.33.127
6810.53.33.128/2510.53.33.129 – 10.53.33.25410.53.33.255
6910.53.34.0/2510.53.34.1 – 10.53.34.12610.53.34.127
7010.53.34.128/2510.53.34.129 – 10.53.34.25410.53.34.255
7110.53.35.0/2510.53.35.1 – 10.53.35.12610.53.35.127
7210.53.35.128/2510.53.35.129 – 10.53.35.25410.53.35.255
7310.53.36.0/2510.53.36.1 – 10.53.36.12610.53.36.127
7410.53.36.128/2510.53.36.129 – 10.53.36.25410.53.36.255
7510.53.37.0/2510.53.37.1 – 10.53.37.12610.53.37.127
7610.53.37.128/2510.53.37.129 – 10.53.37.25410.53.37.255
7710.53.38.0/2510.53.38.1 – 10.53.38.12610.53.38.127
7810.53.38.128/2510.53.38.129 – 10.53.38.25410.53.38.255
7910.53.39.0/2510.53.39.1 – 10.53.39.12610.53.39.127
8010.53.39.128/2510.53.39.129 – 10.53.39.25410.53.39.255
8110.53.40.0/2510.53.40.1 – 10.53.40.12610.53.40.127
8210.53.40.128/2510.53.40.129 – 10.53.40.25410.53.40.255
8310.53.41.0/2510.53.41.1 – 10.53.41.12610.53.41.127
8410.53.41.128/2510.53.41.129 – 10.53.41.25410.53.41.255
8510.53.42.0/2510.53.42.1 – 10.53.42.12610.53.42.127
8610.53.42.128/2510.53.42.129 – 10.53.42.25410.53.42.255
8710.53.43.0/2510.53.43.1 – 10.53.43.12610.53.43.127
8810.53.43.128/2510.53.43.129 – 10.53.43.25410.53.43.255
8910.53.44.0/2510.53.44.1 – 10.53.44.12610.53.44.127
9010.53.44.128/2510.53.44.129 – 10.53.44.25410.53.44.255
9110.53.45.0/2510.53.45.1 – 10.53.45.12610.53.45.127
9210.53.45.128/2510.53.45.129 – 10.53.45.25410.53.45.255
9310.53.46.0/2510.53.46.1 – 10.53.46.12610.53.46.127
9410.53.46.128/2510.53.46.129 – 10.53.46.25410.53.46.255
9510.53.47.0/2510.53.47.1 – 10.53.47.12610.53.47.127
9610.53.47.128/2510.53.47.129 – 10.53.47.25410.53.47.255
9710.53.48.0/2510.53.48.1 – 10.53.48.12610.53.48.127
9810.53.48.128/2510.53.48.129 – 10.53.48.25410.53.48.255
9910.53.49.0/2510.53.49.1 – 10.53.49.12610.53.49.127
10010.53.49.128/2510.53.49.129 – 10.53.49.25410.53.49.255
10110.53.50.0/2510.53.50.1 – 10.53.50.12610.53.50.127
10210.53.50.128/2510.53.50.129 – 10.53.50.25410.53.50.255
10310.53.51.0/2510.53.51.1 – 10.53.51.12610.53.51.127
10410.53.51.128/2510.53.51.129 – 10.53.51.25410.53.51.255
10510.53.52.0/2510.53.52.1 – 10.53.52.12610.53.52.127
10610.53.52.128/2510.53.52.129 – 10.53.52.25410.53.52.255
10710.53.53.0/2510.53.53.1 – 10.53.53.12610.53.53.127
10810.53.53.128/2510.53.53.129 – 10.53.53.25410.53.53.255
10910.53.54.0/2510.53.54.1 – 10.53.54.12610.53.54.127
11010.53.54.128/2510.53.54.129 – 10.53.54.25410.53.54.255
11110.53.55.0/2510.53.55.1 – 10.53.55.12610.53.55.127
11210.53.55.128/2510.53.55.129 – 10.53.55.25410.53.55.255
11310.53.56.0/2510.53.56.1 – 10.53.56.12610.53.56.127
11410.53.56.128/2510.53.56.129 – 10.53.56.25410.53.56.255
11510.53.57.0/2510.53.57.1 – 10.53.57.12610.53.57.127
11610.53.57.128/2510.53.57.129 – 10.53.57.25410.53.57.255
11710.53.58.0/2510.53.58.1 – 10.53.58.12610.53.58.127
11810.53.58.128/2510.53.58.129 – 10.53.58.25410.53.58.255
11910.53.59.0/2510.53.59.1 – 10.53.59.12610.53.59.127
12010.53.59.128/2510.53.59.129 – 10.53.59.25410.53.59.255
12110.53.60.0/2510.53.60.1 – 10.53.60.12610.53.60.127
12210.53.60.128/2510.53.60.129 – 10.53.60.25410.53.60.255
12310.53.61.0/2510.53.61.1 – 10.53.61.12610.53.61.127
12410.53.61.128/2510.53.61.129 – 10.53.61.25410.53.61.255
12510.53.62.0/2510.53.62.1 – 10.53.62.12610.53.62.127
12610.53.62.128/2510.53.62.129 – 10.53.62.25410.53.62.255
12710.53.63.0/2510.53.63.1 – 10.53.63.12610.53.63.127
12810.53.63.128/2510.53.63.129 – 10.53.63.25410.53.63.255
01 / table

IPv4 CIDR prefix table.

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

prefixsubnet maskaddresseshostsin your /18
/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-
/18255.255.192.016,38416,3821
/19255.255.224.08,1928,1902 split →
/20255.255.240.04,0964,0944 split →
/21255.255.248.02,0482,0468 split →
/22255.255.252.01,0241,02216 split →
/23255.255.254.051251032 split →
/24255.255.255.025625464 split →
/25255.255.255.128128126128 split →
/26255.255.255.1926462256 split →
/27255.255.255.2243230512 split →
/28255.255.255.24016141,024 split →
/29255.255.255.248862,048 split →
/30255.255.255.252424,096 split →
/31255.255.255.254228,192 split →
/32255.255.255.2551116,384 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 →