Prefix Information
The prefix 603 is part of area code 475 serving Bridgeport, Connecticut.
This exchange contains 10,000 possible phone numbers (475-603-0000 through 475-603-9999).
Phone numbers with prefix 603 in area code 475. Location: Bridgeport, Connecticut.
The prefix 603 is part of area code 475 serving Bridgeport, Connecticut.
This exchange contains 10,000 possible phone numbers (475-603-0000 through 475-603-9999).