Prefix Information

The prefix 300 is part of area code 443 serving Baltimore, Maryland.

This exchange contains 10,000 possible phone numbers (443-300-0000 through 443-300-9999).

Browse Numbers in This Prefix

443-300-0000-0999 443-300-1000-1999 443-300-2000-2999 443-300-3000-3999 443-300-4000-4999 443-300-5000-5999 443-300-6000-6999 443-300-7000-7999 443-300-8000-8999 443-300-9000-9999

Sample Numbers

(443) 300-0000 (443) 300-1234 (443) 300-2000 (443) 300-3333 (443) 300-4444 (443) 300-5555 (443) 300-6000 (443) 300-7777 (443) 300-8888 (443) 300-9999