Prefix Information

The prefix 503 is part of area code 378 serving Unknown, Unknown.

This exchange contains 10,000 possible phone numbers (378-503-0000 through 378-503-9999).

Browse Numbers in This Prefix

378-503-0000-0999 378-503-1000-1999 378-503-2000-2999 378-503-3000-3999 378-503-4000-4999 378-503-5000-5999 378-503-6000-6999 378-503-7000-7999 378-503-8000-8999 378-503-9000-9999

Sample Numbers

(378) 503-0000 (378) 503-1234 (378) 503-2000 (378) 503-3333 (378) 503-4444 (378) 503-5555 (378) 503-6000 (378) 503-7777 (378) 503-8888 (378) 503-9999