Customers in Central Maryland and the Eastern Shore requesting a new phone number for any device may get the new area code. Customers with existing phone numbers or those who move within the same local exchange calling area and choose to keep their numbers will not be affected.
The new area code is expected to create an additional 8 million numbers. The 667 digits will affect Baltimore and the surrounding counties and the Eastern Shore, where 410 and 443 are used.
The Public Service Commission, which regulates land-lines and long distance service in Maryland, has complied a list of frequently-asked-questions on its website.