Address all incoming mail to APL’s central address: The Johns Hopkins University Applied Physics Laboratory 11100 Johns Hopkins Rd Laurel MD 20723-6099

Telephone

Washington Area: 240-228-5000 Washington Fax: 240-228-1093

Baltimore Area: 443-778-5000 Baltimore Fax: 443-778-1093

1. Direct dial 240-228-#### (Washington area callers) or 443-778-#### (Baltimore area callers); substitute the extension number for ####. Long-distance callers may use either area code.
   
2. Dial the automated attendant on 240-228-6000 or 443-778-6000 and enter the 5 digit extension number after the prompt.
3. Dial the main consoles on 240-228-5000 or 443-778-5000 and ask the operator transfer the call.

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