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)10.52.0.0/18
network10.52.0.0/18
broadcast10.52.63.255
first host10.52.0.1
last host10.52.63.254
subnet mask255.255.192.0
wildcard0.0.63.255
addresses16,384
usable hosts16,382
classA
ipcalc 10.52.0.0/18
address00001010.00110100.00000000.00000000
subnet mask11111111.11111111.11000000.00000000
network00001010.00110100.00000000.00000000
broadcast00001010.00110100.00111111.11111111
green = network part, grey = host part
hex0x0a340000
decimal171180032
reverse dns0.0.52.10.in-addr.arpa
ipv4-mapped::ffff:a34:0

/18 split into /25 · 128 subnets

close ×
#networkhost rangebroadcast
110.52.0.0/2510.52.0.1 – 10.52.0.12610.52.0.127
210.52.0.128/2510.52.0.129 – 10.52.0.25410.52.0.255
310.52.1.0/2510.52.1.1 – 10.52.1.12610.52.1.127
410.52.1.128/2510.52.1.129 – 10.52.1.25410.52.1.255
510.52.2.0/2510.52.2.1 – 10.52.2.12610.52.2.127
610.52.2.128/2510.52.2.129 – 10.52.2.25410.52.2.255
710.52.3.0/2510.52.3.1 – 10.52.3.12610.52.3.127
810.52.3.128/2510.52.3.129 – 10.52.3.25410.52.3.255
910.52.4.0/2510.52.4.1 – 10.52.4.12610.52.4.127
1010.52.4.128/2510.52.4.129 – 10.52.4.25410.52.4.255
1110.52.5.0/2510.52.5.1 – 10.52.5.12610.52.5.127
1210.52.5.128/2510.52.5.129 – 10.52.5.25410.52.5.255
1310.52.6.0/2510.52.6.1 – 10.52.6.12610.52.6.127
1410.52.6.128/2510.52.6.129 – 10.52.6.25410.52.6.255
1510.52.7.0/2510.52.7.1 – 10.52.7.12610.52.7.127
1610.52.7.128/2510.52.7.129 – 10.52.7.25410.52.7.255
1710.52.8.0/2510.52.8.1 – 10.52.8.12610.52.8.127
1810.52.8.128/2510.52.8.129 – 10.52.8.25410.52.8.255
1910.52.9.0/2510.52.9.1 – 10.52.9.12610.52.9.127
2010.52.9.128/2510.52.9.129 – 10.52.9.25410.52.9.255
2110.52.10.0/2510.52.10.1 – 10.52.10.12610.52.10.127
2210.52.10.128/2510.52.10.129 – 10.52.10.25410.52.10.255
2310.52.11.0/2510.52.11.1 – 10.52.11.12610.52.11.127
2410.52.11.128/2510.52.11.129 – 10.52.11.25410.52.11.255
2510.52.12.0/2510.52.12.1 – 10.52.12.12610.52.12.127
2610.52.12.128/2510.52.12.129 – 10.52.12.25410.52.12.255
2710.52.13.0/2510.52.13.1 – 10.52.13.12610.52.13.127
2810.52.13.128/2510.52.13.129 – 10.52.13.25410.52.13.255
2910.52.14.0/2510.52.14.1 – 10.52.14.12610.52.14.127
3010.52.14.128/2510.52.14.129 – 10.52.14.25410.52.14.255
3110.52.15.0/2510.52.15.1 – 10.52.15.12610.52.15.127
3210.52.15.128/2510.52.15.129 – 10.52.15.25410.52.15.255
3310.52.16.0/2510.52.16.1 – 10.52.16.12610.52.16.127
3410.52.16.128/2510.52.16.129 – 10.52.16.25410.52.16.255
3510.52.17.0/2510.52.17.1 – 10.52.17.12610.52.17.127
3610.52.17.128/2510.52.17.129 – 10.52.17.25410.52.17.255
3710.52.18.0/2510.52.18.1 – 10.52.18.12610.52.18.127
3810.52.18.128/2510.52.18.129 – 10.52.18.25410.52.18.255
3910.52.19.0/2510.52.19.1 – 10.52.19.12610.52.19.127
4010.52.19.128/2510.52.19.129 – 10.52.19.25410.52.19.255
4110.52.20.0/2510.52.20.1 – 10.52.20.12610.52.20.127
4210.52.20.128/2510.52.20.129 – 10.52.20.25410.52.20.255
4310.52.21.0/2510.52.21.1 – 10.52.21.12610.52.21.127
4410.52.21.128/2510.52.21.129 – 10.52.21.25410.52.21.255
4510.52.22.0/2510.52.22.1 – 10.52.22.12610.52.22.127
4610.52.22.128/2510.52.22.129 – 10.52.22.25410.52.22.255
4710.52.23.0/2510.52.23.1 – 10.52.23.12610.52.23.127
4810.52.23.128/2510.52.23.129 – 10.52.23.25410.52.23.255
4910.52.24.0/2510.52.24.1 – 10.52.24.12610.52.24.127
5010.52.24.128/2510.52.24.129 – 10.52.24.25410.52.24.255
5110.52.25.0/2510.52.25.1 – 10.52.25.12610.52.25.127
5210.52.25.128/2510.52.25.129 – 10.52.25.25410.52.25.255
5310.52.26.0/2510.52.26.1 – 10.52.26.12610.52.26.127
5410.52.26.128/2510.52.26.129 – 10.52.26.25410.52.26.255
5510.52.27.0/2510.52.27.1 – 10.52.27.12610.52.27.127
5610.52.27.128/2510.52.27.129 – 10.52.27.25410.52.27.255
5710.52.28.0/2510.52.28.1 – 10.52.28.12610.52.28.127
5810.52.28.128/2510.52.28.129 – 10.52.28.25410.52.28.255
5910.52.29.0/2510.52.29.1 – 10.52.29.12610.52.29.127
6010.52.29.128/2510.52.29.129 – 10.52.29.25410.52.29.255
6110.52.30.0/2510.52.30.1 – 10.52.30.12610.52.30.127
6210.52.30.128/2510.52.30.129 – 10.52.30.25410.52.30.255
6310.52.31.0/2510.52.31.1 – 10.52.31.12610.52.31.127
6410.52.31.128/2510.52.31.129 – 10.52.31.25410.52.31.255
6510.52.32.0/2510.52.32.1 – 10.52.32.12610.52.32.127
6610.52.32.128/2510.52.32.129 – 10.52.32.25410.52.32.255
6710.52.33.0/2510.52.33.1 – 10.52.33.12610.52.33.127
6810.52.33.128/2510.52.33.129 – 10.52.33.25410.52.33.255
6910.52.34.0/2510.52.34.1 – 10.52.34.12610.52.34.127
7010.52.34.128/2510.52.34.129 – 10.52.34.25410.52.34.255
7110.52.35.0/2510.52.35.1 – 10.52.35.12610.52.35.127
7210.52.35.128/2510.52.35.129 – 10.52.35.25410.52.35.255
7310.52.36.0/2510.52.36.1 – 10.52.36.12610.52.36.127
7410.52.36.128/2510.52.36.129 – 10.52.36.25410.52.36.255
7510.52.37.0/2510.52.37.1 – 10.52.37.12610.52.37.127
7610.52.37.128/2510.52.37.129 – 10.52.37.25410.52.37.255
7710.52.38.0/2510.52.38.1 – 10.52.38.12610.52.38.127
7810.52.38.128/2510.52.38.129 – 10.52.38.25410.52.38.255
7910.52.39.0/2510.52.39.1 – 10.52.39.12610.52.39.127
8010.52.39.128/2510.52.39.129 – 10.52.39.25410.52.39.255
8110.52.40.0/2510.52.40.1 – 10.52.40.12610.52.40.127
8210.52.40.128/2510.52.40.129 – 10.52.40.25410.52.40.255
8310.52.41.0/2510.52.41.1 – 10.52.41.12610.52.41.127
8410.52.41.128/2510.52.41.129 – 10.52.41.25410.52.41.255
8510.52.42.0/2510.52.42.1 – 10.52.42.12610.52.42.127
8610.52.42.128/2510.52.42.129 – 10.52.42.25410.52.42.255
8710.52.43.0/2510.52.43.1 – 10.52.43.12610.52.43.127
8810.52.43.128/2510.52.43.129 – 10.52.43.25410.52.43.255
8910.52.44.0/2510.52.44.1 – 10.52.44.12610.52.44.127
9010.52.44.128/2510.52.44.129 – 10.52.44.25410.52.44.255
9110.52.45.0/2510.52.45.1 – 10.52.45.12610.52.45.127
9210.52.45.128/2510.52.45.129 – 10.52.45.25410.52.45.255
9310.52.46.0/2510.52.46.1 – 10.52.46.12610.52.46.127
9410.52.46.128/2510.52.46.129 – 10.52.46.25410.52.46.255
9510.52.47.0/2510.52.47.1 – 10.52.47.12610.52.47.127
9610.52.47.128/2510.52.47.129 – 10.52.47.25410.52.47.255
9710.52.48.0/2510.52.48.1 – 10.52.48.12610.52.48.127
9810.52.48.128/2510.52.48.129 – 10.52.48.25410.52.48.255
9910.52.49.0/2510.52.49.1 – 10.52.49.12610.52.49.127
10010.52.49.128/2510.52.49.129 – 10.52.49.25410.52.49.255
10110.52.50.0/2510.52.50.1 – 10.52.50.12610.52.50.127
10210.52.50.128/2510.52.50.129 – 10.52.50.25410.52.50.255
10310.52.51.0/2510.52.51.1 – 10.52.51.12610.52.51.127
10410.52.51.128/2510.52.51.129 – 10.52.51.25410.52.51.255
10510.52.52.0/2510.52.52.1 – 10.52.52.12610.52.52.127
10610.52.52.128/2510.52.52.129 – 10.52.52.25410.52.52.255
10710.52.53.0/2510.52.53.1 – 10.52.53.12610.52.53.127
10810.52.53.128/2510.52.53.129 – 10.52.53.25410.52.53.255
10910.52.54.0/2510.52.54.1 – 10.52.54.12610.52.54.127
11010.52.54.128/2510.52.54.129 – 10.52.54.25410.52.54.255
11110.52.55.0/2510.52.55.1 – 10.52.55.12610.52.55.127
11210.52.55.128/2510.52.55.129 – 10.52.55.25410.52.55.255
11310.52.56.0/2510.52.56.1 – 10.52.56.12610.52.56.127
11410.52.56.128/2510.52.56.129 – 10.52.56.25410.52.56.255
11510.52.57.0/2510.52.57.1 – 10.52.57.12610.52.57.127
11610.52.57.128/2510.52.57.129 – 10.52.57.25410.52.57.255
11710.52.58.0/2510.52.58.1 – 10.52.58.12610.52.58.127
11810.52.58.128/2510.52.58.129 – 10.52.58.25410.52.58.255
11910.52.59.0/2510.52.59.1 – 10.52.59.12610.52.59.127
12010.52.59.128/2510.52.59.129 – 10.52.59.25410.52.59.255
12110.52.60.0/2510.52.60.1 – 10.52.60.12610.52.60.127
12210.52.60.128/2510.52.60.129 – 10.52.60.25410.52.60.255
12310.52.61.0/2510.52.61.1 – 10.52.61.12610.52.61.127
12410.52.61.128/2510.52.61.129 – 10.52.61.25410.52.61.255
12510.52.62.0/2510.52.62.1 – 10.52.62.12610.52.62.127
12610.52.62.128/2510.52.62.129 – 10.52.62.25410.52.62.255
12710.52.63.0/2510.52.63.1 – 10.52.63.12610.52.63.127
12810.52.63.128/2510.52.63.129 – 10.52.63.25410.52.63.255
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 →