Prefix Information
The prefix 303 is part of area code 503 serving Portland, Oregon.
This exchange contains 10,000 possible phone numbers (503-303-0000 through 503-303-9999).
Phone numbers with prefix 303 in area code 503. Location: Portland, Oregon.
The prefix 303 is part of area code 503 serving Portland, Oregon.
This exchange contains 10,000 possible phone numbers (503-303-0000 through 503-303-9999).