Prefix Information
The prefix 603 is part of area code 781 serving Lexington, Massachusetts.
This exchange contains 10,000 possible phone numbers (781-603-0000 through 781-603-9999).
Phone numbers with prefix 603 in area code 781. Location: Lexington, Massachusetts.
The prefix 603 is part of area code 781 serving Lexington, Massachusetts.
This exchange contains 10,000 possible phone numbers (781-603-0000 through 781-603-9999).