Prefix Information
The prefix 340 is part of area code 563 serving Davenport, Iowa.
This exchange contains 10,000 possible phone numbers (563-340-0000 through 563-340-9999).
Phone numbers with prefix 340 in area code 563. Location: Davenport, Iowa.
The prefix 340 is part of area code 563 serving Davenport, Iowa.
This exchange contains 10,000 possible phone numbers (563-340-0000 through 563-340-9999).