Dotless IPv4
We all know where the 127.0.0.1 is, and most of us probably remember some well-known public DNS servers like 1.1.1.1 or 8.8.8.8. Most of us prefer to write IPv4 addresses in a dot-decimal notation, consisting of four octets (four decimal numbers) each ranging from 0 to 255. “In some cases of technical writing, IPv4 addresses may be presented in various hexadecimal, octal, or binary representations.” – Wikipedia Four octets means 32 bits, and 32 bits can be represented as a single decimal number. For example: 127 * 256³ + 0 * 256² + 0 * 256 + 1 ...