Prefix Information
The prefix 503 is part of area code 657 serving Anaheim, California.
This exchange contains 10,000 possible phone numbers (657-503-0000 through 657-503-9999).
Phone numbers with prefix 503 in area code 657. Location: Anaheim, California.
The prefix 503 is part of area code 657 serving Anaheim, California.
This exchange contains 10,000 possible phone numbers (657-503-0000 through 657-503-9999).