what area code is 650

An area code is a segment of a telephone number that designates a specific geographic region within a country, or sometimes a specific service. It helps route telephone calls to the correct location. For example, in the United States, area codes are the first three digits of the 10-digit phone number and correspond to regions such as cities or parts of states. There are hundreds of area codes in the US, Canada, and other countries, each assigned to various regions or cities. For example, the area code 212 represents Manhattan in New York City, 206 is for Seattle, Washington, and 305 covers Miami, Florida. Area codes can also have overlays or splits to accommodate growing populations and phone number demands. Area codes may also include country codes for international dialing, and some are assigned to non-geographic uses or territories outside the continental US. If you have a specific city or region in mind, I can help look up its area code. Otherwise, area codes broadly function as regional telephone number prefixes used worldwide to efficiently route phone calls.