At Boston University, we issue 5-digit phone numbers to simplify internal communication. The University operates under two main area codes: 617-353-####<\/strong> and 617-358-####<\/strong>. Instead of using the full 10-digit number, a 5-digit extension system allows for easier dialing within the University’s network.<\/p>\n <\/div>\n This method streamlines internal calls: making it quicker and more efficient for faculty, staff, and students to connect.<\/p>\n Please remember to use the full 10-digit number, including the appropriate area code if dialing a number outside the University.<\/p>\n Access to the building’s front door outside of normal working hours and on select days in the summer is with a swipe of your BU ID.<\/p>\nHow it Works<\/h4>\n
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353<\/code>\u00a0Numbers<\/strong>: If your full number is 617-353-1234<\/strong>, your 5-digit extension is 3-1234<\/strong>. You simply dial the number without the area code and prefix, starting with the digit ‘3’.<\/li>\n358<\/code> Numbers<\/strong>: If your full number is 617-358-5678<\/strong>, your 5-digit extension is 8-5678<\/strong>. Again, you only need the last 5 digits, starting with the digit ‘8’.<\/li>\n<\/ul>\nObtaining Your Building Key<\/h2>\n