Prefix Information
The prefix 603 is part of area code 213 serving Los Angeles, California.
This exchange contains 10,000 possible phone numbers (213-603-0000 through 213-603-9999).
Phone numbers with prefix 603 in area code 213. Location: Los Angeles, California.
The prefix 603 is part of area code 213 serving Los Angeles, California.
This exchange contains 10,000 possible phone numbers (213-603-0000 through 213-603-9999).