+818 commonly refers to a specific [Area Code](/wiki/Area_Code) in the North American Numbering Plan, serving parts of [Southern California](/wiki/Southern_California). Beyond its geographic designation, it can also denote a numerical sequence or an identifier in various contexts.
+## See also
+- [Telephone](/wiki/Telephone)
+- [Number](/wiki/Number)
+- [Code](/wiki/Code)
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