Prefix Information
The prefix 603 is part of area code 626 serving Pasadena, California.
This exchange contains 10,000 possible phone numbers (626-603-0000 through 626-603-9999).
Phone numbers with prefix 603 in area code 626. Location: Pasadena, California.
The prefix 603 is part of area code 626 serving Pasadena, California.
This exchange contains 10,000 possible phone numbers (626-603-0000 through 626-603-9999).