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)10.46.0.0/18
network10.46.0.0/18
broadcast10.46.63.255
first host10.46.0.1
last host10.46.63.254
subnet mask255.255.192.0
wildcard0.0.63.255
addresses16,384
usable hosts16,382
classA
ipcalc 10.46.0.0/18
address00001010.00101110.00000000.00000000
subnet mask11111111.11111111.11000000.00000000
network00001010.00101110.00000000.00000000
broadcast00001010.00101110.00111111.11111111
green = network part, grey = host part
hex0x0a2e0000
decimal170786816
reverse dns0.0.46.10.in-addr.arpa
ipv4-mapped::ffff:a2e:0

/18 split into /25 · 128 subnets

close ×
#networkhost rangebroadcast
110.46.0.0/2510.46.0.1 – 10.46.0.12610.46.0.127
210.46.0.128/2510.46.0.129 – 10.46.0.25410.46.0.255
310.46.1.0/2510.46.1.1 – 10.46.1.12610.46.1.127
410.46.1.128/2510.46.1.129 – 10.46.1.25410.46.1.255
510.46.2.0/2510.46.2.1 – 10.46.2.12610.46.2.127
610.46.2.128/2510.46.2.129 – 10.46.2.25410.46.2.255
710.46.3.0/2510.46.3.1 – 10.46.3.12610.46.3.127
810.46.3.128/2510.46.3.129 – 10.46.3.25410.46.3.255
910.46.4.0/2510.46.4.1 – 10.46.4.12610.46.4.127
1010.46.4.128/2510.46.4.129 – 10.46.4.25410.46.4.255
1110.46.5.0/2510.46.5.1 – 10.46.5.12610.46.5.127
1210.46.5.128/2510.46.5.129 – 10.46.5.25410.46.5.255
1310.46.6.0/2510.46.6.1 – 10.46.6.12610.46.6.127
1410.46.6.128/2510.46.6.129 – 10.46.6.25410.46.6.255
1510.46.7.0/2510.46.7.1 – 10.46.7.12610.46.7.127
1610.46.7.128/2510.46.7.129 – 10.46.7.25410.46.7.255
1710.46.8.0/2510.46.8.1 – 10.46.8.12610.46.8.127
1810.46.8.128/2510.46.8.129 – 10.46.8.25410.46.8.255
1910.46.9.0/2510.46.9.1 – 10.46.9.12610.46.9.127
2010.46.9.128/2510.46.9.129 – 10.46.9.25410.46.9.255
2110.46.10.0/2510.46.10.1 – 10.46.10.12610.46.10.127
2210.46.10.128/2510.46.10.129 – 10.46.10.25410.46.10.255
2310.46.11.0/2510.46.11.1 – 10.46.11.12610.46.11.127
2410.46.11.128/2510.46.11.129 – 10.46.11.25410.46.11.255
2510.46.12.0/2510.46.12.1 – 10.46.12.12610.46.12.127
2610.46.12.128/2510.46.12.129 – 10.46.12.25410.46.12.255
2710.46.13.0/2510.46.13.1 – 10.46.13.12610.46.13.127
2810.46.13.128/2510.46.13.129 – 10.46.13.25410.46.13.255
2910.46.14.0/2510.46.14.1 – 10.46.14.12610.46.14.127
3010.46.14.128/2510.46.14.129 – 10.46.14.25410.46.14.255
3110.46.15.0/2510.46.15.1 – 10.46.15.12610.46.15.127
3210.46.15.128/2510.46.15.129 – 10.46.15.25410.46.15.255
3310.46.16.0/2510.46.16.1 – 10.46.16.12610.46.16.127
3410.46.16.128/2510.46.16.129 – 10.46.16.25410.46.16.255
3510.46.17.0/2510.46.17.1 – 10.46.17.12610.46.17.127
3610.46.17.128/2510.46.17.129 – 10.46.17.25410.46.17.255
3710.46.18.0/2510.46.18.1 – 10.46.18.12610.46.18.127
3810.46.18.128/2510.46.18.129 – 10.46.18.25410.46.18.255
3910.46.19.0/2510.46.19.1 – 10.46.19.12610.46.19.127
4010.46.19.128/2510.46.19.129 – 10.46.19.25410.46.19.255
4110.46.20.0/2510.46.20.1 – 10.46.20.12610.46.20.127
4210.46.20.128/2510.46.20.129 – 10.46.20.25410.46.20.255
4310.46.21.0/2510.46.21.1 – 10.46.21.12610.46.21.127
4410.46.21.128/2510.46.21.129 – 10.46.21.25410.46.21.255
4510.46.22.0/2510.46.22.1 – 10.46.22.12610.46.22.127
4610.46.22.128/2510.46.22.129 – 10.46.22.25410.46.22.255
4710.46.23.0/2510.46.23.1 – 10.46.23.12610.46.23.127
4810.46.23.128/2510.46.23.129 – 10.46.23.25410.46.23.255
4910.46.24.0/2510.46.24.1 – 10.46.24.12610.46.24.127
5010.46.24.128/2510.46.24.129 – 10.46.24.25410.46.24.255
5110.46.25.0/2510.46.25.1 – 10.46.25.12610.46.25.127
5210.46.25.128/2510.46.25.129 – 10.46.25.25410.46.25.255
5310.46.26.0/2510.46.26.1 – 10.46.26.12610.46.26.127
5410.46.26.128/2510.46.26.129 – 10.46.26.25410.46.26.255
5510.46.27.0/2510.46.27.1 – 10.46.27.12610.46.27.127
5610.46.27.128/2510.46.27.129 – 10.46.27.25410.46.27.255
5710.46.28.0/2510.46.28.1 – 10.46.28.12610.46.28.127
5810.46.28.128/2510.46.28.129 – 10.46.28.25410.46.28.255
5910.46.29.0/2510.46.29.1 – 10.46.29.12610.46.29.127
6010.46.29.128/2510.46.29.129 – 10.46.29.25410.46.29.255
6110.46.30.0/2510.46.30.1 – 10.46.30.12610.46.30.127
6210.46.30.128/2510.46.30.129 – 10.46.30.25410.46.30.255
6310.46.31.0/2510.46.31.1 – 10.46.31.12610.46.31.127
6410.46.31.128/2510.46.31.129 – 10.46.31.25410.46.31.255
6510.46.32.0/2510.46.32.1 – 10.46.32.12610.46.32.127
6610.46.32.128/2510.46.32.129 – 10.46.32.25410.46.32.255
6710.46.33.0/2510.46.33.1 – 10.46.33.12610.46.33.127
6810.46.33.128/2510.46.33.129 – 10.46.33.25410.46.33.255
6910.46.34.0/2510.46.34.1 – 10.46.34.12610.46.34.127
7010.46.34.128/2510.46.34.129 – 10.46.34.25410.46.34.255
7110.46.35.0/2510.46.35.1 – 10.46.35.12610.46.35.127
7210.46.35.128/2510.46.35.129 – 10.46.35.25410.46.35.255
7310.46.36.0/2510.46.36.1 – 10.46.36.12610.46.36.127
7410.46.36.128/2510.46.36.129 – 10.46.36.25410.46.36.255
7510.46.37.0/2510.46.37.1 – 10.46.37.12610.46.37.127
7610.46.37.128/2510.46.37.129 – 10.46.37.25410.46.37.255
7710.46.38.0/2510.46.38.1 – 10.46.38.12610.46.38.127
7810.46.38.128/2510.46.38.129 – 10.46.38.25410.46.38.255
7910.46.39.0/2510.46.39.1 – 10.46.39.12610.46.39.127
8010.46.39.128/2510.46.39.129 – 10.46.39.25410.46.39.255
8110.46.40.0/2510.46.40.1 – 10.46.40.12610.46.40.127
8210.46.40.128/2510.46.40.129 – 10.46.40.25410.46.40.255
8310.46.41.0/2510.46.41.1 – 10.46.41.12610.46.41.127
8410.46.41.128/2510.46.41.129 – 10.46.41.25410.46.41.255
8510.46.42.0/2510.46.42.1 – 10.46.42.12610.46.42.127
8610.46.42.128/2510.46.42.129 – 10.46.42.25410.46.42.255
8710.46.43.0/2510.46.43.1 – 10.46.43.12610.46.43.127
8810.46.43.128/2510.46.43.129 – 10.46.43.25410.46.43.255
8910.46.44.0/2510.46.44.1 – 10.46.44.12610.46.44.127
9010.46.44.128/2510.46.44.129 – 10.46.44.25410.46.44.255
9110.46.45.0/2510.46.45.1 – 10.46.45.12610.46.45.127
9210.46.45.128/2510.46.45.129 – 10.46.45.25410.46.45.255
9310.46.46.0/2510.46.46.1 – 10.46.46.12610.46.46.127
9410.46.46.128/2510.46.46.129 – 10.46.46.25410.46.46.255
9510.46.47.0/2510.46.47.1 – 10.46.47.12610.46.47.127
9610.46.47.128/2510.46.47.129 – 10.46.47.25410.46.47.255
9710.46.48.0/2510.46.48.1 – 10.46.48.12610.46.48.127
9810.46.48.128/2510.46.48.129 – 10.46.48.25410.46.48.255
9910.46.49.0/2510.46.49.1 – 10.46.49.12610.46.49.127
10010.46.49.128/2510.46.49.129 – 10.46.49.25410.46.49.255
10110.46.50.0/2510.46.50.1 – 10.46.50.12610.46.50.127
10210.46.50.128/2510.46.50.129 – 10.46.50.25410.46.50.255
10310.46.51.0/2510.46.51.1 – 10.46.51.12610.46.51.127
10410.46.51.128/2510.46.51.129 – 10.46.51.25410.46.51.255
10510.46.52.0/2510.46.52.1 – 10.46.52.12610.46.52.127
10610.46.52.128/2510.46.52.129 – 10.46.52.25410.46.52.255
10710.46.53.0/2510.46.53.1 – 10.46.53.12610.46.53.127
10810.46.53.128/2510.46.53.129 – 10.46.53.25410.46.53.255
10910.46.54.0/2510.46.54.1 – 10.46.54.12610.46.54.127
11010.46.54.128/2510.46.54.129 – 10.46.54.25410.46.54.255
11110.46.55.0/2510.46.55.1 – 10.46.55.12610.46.55.127
11210.46.55.128/2510.46.55.129 – 10.46.55.25410.46.55.255
11310.46.56.0/2510.46.56.1 – 10.46.56.12610.46.56.127
11410.46.56.128/2510.46.56.129 – 10.46.56.25410.46.56.255
11510.46.57.0/2510.46.57.1 – 10.46.57.12610.46.57.127
11610.46.57.128/2510.46.57.129 – 10.46.57.25410.46.57.255
11710.46.58.0/2510.46.58.1 – 10.46.58.12610.46.58.127
11810.46.58.128/2510.46.58.129 – 10.46.58.25410.46.58.255
11910.46.59.0/2510.46.59.1 – 10.46.59.12610.46.59.127
12010.46.59.128/2510.46.59.129 – 10.46.59.25410.46.59.255
12110.46.60.0/2510.46.60.1 – 10.46.60.12610.46.60.127
12210.46.60.128/2510.46.60.129 – 10.46.60.25410.46.60.255
12310.46.61.0/2510.46.61.1 – 10.46.61.12610.46.61.127
12410.46.61.128/2510.46.61.129 – 10.46.61.25410.46.61.255
12510.46.62.0/2510.46.62.1 – 10.46.62.12610.46.62.127
12610.46.62.128/2510.46.62.129 – 10.46.62.25410.46.62.255
12710.46.63.0/2510.46.63.1 – 10.46.63.12610.46.63.127
12810.46.63.128/2510.46.63.129 – 10.46.63.25410.46.63.255
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 →