090

090 is a three-digit numeral that appears in multiple numbering systems around the world. Its meaning depends on context and jurisdiction, and it can designate a telephone prefix, a position bearing, or simply a zero-padded form of the number 90 in data formats.

In telecommunications, 090 is notable in two ways. In Japan, 090 is a common mobile phone prefix; domestic numbers typically appear as 090-xxxx-xxxx, and international format is +81-90-xxxx-xxxx, with the leading 0 omitted when dialing from abroad. In Europe, prefixes beginning with 09 are commonly used for premium-rate services; in places like the United Kingdom and Germany, 09x and 0900 ranges are associated with paid information and entertainment lines and are subject to regulatory controls and higher charges.

Other uses include navigation and encoding. In navigation, a bearing of 090 degrees corresponds to due east. In data representation, 090 may simply represent the decimal number 90 with leading zeros, and in ASCII the decimal value 90 corresponds to the uppercase letter Z.

Because uses vary widely, the exact meaning of 090 should be inferred from local numbering schemes or documentation.