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Rita Rich

New Area Code 227 Coming to Parts of Maryland

The Maryland Public Service Commission (PSC)  announced the assignment of 227 as a new area code which will eventually serve the same geographic area in Maryland currently served by the 240 and 301 area codes. The Commission voted on August 3, 2022, to approve a petition filed by the North American Numbering Plan Administrator (NANPA), which is the neutral third-party entity that allocates telephone numbering resources.

Dwindling Supply of Existing 240/301 Phone Numbers The 240/301 calling area serves residents and businesses in Allegany, Charles, Garrett, Montgomery, Prince George’s, St. Mary’s, and Washington counties. Other impacted counties are Frederick, Howard, Carroll, and Anne Arundel. The remaining supply of available telephone numbers in the 240/301 area is estimated to be exhausted in the second quarter of 2023 – requiring the establishment of a new area code to support future demands in the region.

Customers with a 240 or 301 area code will maintain their existing area codes and their phone numbers will not change. Under the implementation plan approved by the PSC, no new 227 numbers will be assigned in the area until the remaining 240/301 numbers are completely exhausted. When those remaining 240/301 numbers are exhausted all future phone number assignments will be made in the new 227 area code.

No Changes Required for Dialing Calls Because the 240/301 region is served by two overlay area codes, callers are already required to use 10-digit dialing when making calls. Callers in this area have been using 10-digit dialing for more than 20 years since the 240 area code was introduced in 1997. Because 10-digit dialing is already well established in this region, the eventual addition of the new 227 area code covering the same geographic area will not require any changes to the way area residents and businesses dial telephone calls – aside from using the new area code, when necessary.

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