Base 10 201_778_690 Octal (Base 8) 0__1401563002 (leading zero) Hex (Base 16) 0x_0C_06_E6_02 (leading 0x) IP 12.6.230.2 (periods) Binary (Base 2) 0b_00001100_00000110_11100110_00000010 (leading 0b)The underbar character ("_") in all of these is entirely optional and included for legibility only.

To see a CIDR subnet mask applied to your number, append a slash and a number between 1 and 32, i.e. 12.6.230.2/22 .

Numbers in IP format (i.e. 12.6.230.2) must begin with a digit
and contain either one, two, or three periods.

Partial IP addresses like 10. or 10.2 will be expanded by appending zeros
and periods at the right end as needed.

The number may be passed in the scipt URL as ?number= , i.e. baseConvert.cgi?number=10.2.1/22 .

So there you are.