The Maryland area code system serves the entire state of Maryland through several telephone area codes operating under the North American Numbering Plan (NANP). These area codes connect millions of residents, businesses, and government agencies across major cities such as Baltimore, Annapolis, Frederick, Rockville, and Columbia.
The 667 area code is a telephone areas codes in the North American Numbering Plan (NANP) that serves the U.S. state of Maryland. It works as an overlay area code for the 410 and 443 area codes, providing additional phone numbers without changing existing ones. Whether you receive a call from a 667 number or…
The 443 area code is a major telephone areas codes in the U.S. state of Maryland. It serves many of the same regions as the 410 area code, including Baltimore and surrounding communities. Created to meet the growing demand for phone numbers, the area code has become an important part of Maryland’s telecommunications network. What…
The 410 area code serves central and eastern Maryland, including the city of Baltimore, the state capital of Annapolis, and many surrounding counties. Officials introduced the area code on October 6, 1991, after splitting it from the 301 area code to accommodate the growing demand for telephone numbers. Rapid population growth, expanding businesses, and the…
The 301 area code is one of the oldest and most recognizable telephone areas codes in the United States. It serves western and southern Maryland, including major cities such as Bethesda, Rockville, Gaithersburg, Frederick, and Hagerstown. First introduced in 1947, the area code has played an important role in connecting residents, businesses, government offices, and…
The 240 area code is one of the primary telephone codes serving the western and central regions of Maryland. It covers many major cities, suburban communities, and rural areas surrounding the Washington, D.C. metropolitan region. Whether you’ve received a call from a 240 number, are moving to Maryland, or need a local business phone number….