Area Codes
| 227 | Maryland (This code is scheduled to provide numbering relief to area code 240 but no date has been assigned for this to go into effect.) | More information at: Area Code 227 Phone Number Blocks
| 227 | Maryland (This code is scheduled to provide numbering relief to area code 240 but no date has been assigned for this to go into effect.) | More information at: Area Code 227 Phone Number Blocks