Updated: 10/11/2017 by Computer Hope

503 may refer to any of the following:

1. 503 is an HTTP error code is received when the server is unable to handle a request, either because it is overloaded or undergoing maintenance. Often trying to load the page at a later time resolves the issue.

Related pages

  • See our HTTP definition for a listing of other HTTP error codes.

2. 503 is an area code, see our 503 area code listing for further information.

Error, HTTP, Web design terms