Prefix Information

The prefix 399 is part of area code 443 serving Baltimore, Maryland.

This exchange contains 10,000 possible phone numbers (443-399-0000 through 443-399-9999).

Browse Numbers in This Prefix

443-399-0000-0999 443-399-1000-1999 443-399-2000-2999 443-399-3000-3999 443-399-4000-4999 443-399-5000-5999 443-399-6000-6999 443-399-7000-7999 443-399-8000-8999 443-399-9000-9999

Sample Numbers

(443) 399-0000 (443) 399-1234 (443) 399-2000 (443) 399-3333 (443) 399-4444 (443) 399-5555 (443) 399-6000 (443) 399-7777 (443) 399-8888 (443) 399-9999