Area Code 301

Detailed information for Area Code 301
General Information for Area Code 301
Country United States
State/Province Maryland
Major City Rockville
Time Zone Eastern (UTC-05:00)

Area Code 301 Prefixes

Prefix Primary City County Phone Type
301-363 Damascus Montgomery Landline
301-366 Gaithersburg Montgomery Cell Number
301-368 Damascus Montgomery Landline
301-370 Gaithersburg Montgomery Cell Number
301-371 Middletown Frederick Landline
301-373 Hollywood Saint Marys Landline
301-374 Waldorf Charles Landline
301-375 Bryans Road Charles Landline
301-376 Laurel Prince Georges Cell Number
301-377 Laurel Prince Georges Landline
301-378 Frederick Frederick Landline
301-387 Swanton Garrett Landline
301-391 Damascus Montgomery Landline
301-392 La Plata Charles Landline
301-393 Hagerstown Washington Landline
301-395 Laurel Prince Georges Cell Number
301-396 Waldorf Charles Landline
301-399 Waldorf Charles Cell Number
301-401 Frederick Frederick Cell Number
301-407 Poolesville Montgomery Landline
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