011

011 is a three-character sequence that can carry different meanings depending on the context. In decimal notation, it represents the number eleven, with the leading zero typically ignored. In other numeral systems the value changes: in binary it equals 3, and in octal it equals 9.

As a binary value, 011 corresponds to 0×4 + 1×2 + 1×1 = 3. As an octal value, 0×64 + 1×8 + 1×1 = 9. The same three digits thus illustrate how base selection alters numeric interpretation, a common consideration in computer science and digital encoding.

In telecommunications, 011 serves as the international direct dialing prefix in countries within the North American Numbering Plan. From the United States or Canada, dialing 011 followed by a country code and destination number initiates an international call. Other regions may use different prefixes, such as 00, depending on local dialing conventions.

In computing and programming, a leading zero often indicates octal notation in languages with C-style syntax. Therefore, 011 can be an octal literal representing decimal 9. Some languages have moved away from this convention or require explicit prefixes (for example, 0o or 0O) to denote octal values. When 011 appears as text or a string, it is treated as a sequence of characters rather than a number.

Beyond numeric and telecom uses, 011 can function as an internal code, model number, or catalog label in various systems. Its precise meaning is determined entirely by its domain and the conventions in use within that context.