What does 503 stand for?

What does 503 mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: 503.

We've found a total of 3 definitions for 503:

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El Salvador

Regional » Telephone Country Codes

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Out of Resources

Internet » HTTP Error Codes

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Oregon - Northwest and Portland tri-metro

Regional » US Phone Area Codes

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