Prefix Information

The prefix 423 is part of area code 443 serving Baltimore, Maryland.

This exchange contains 10,000 possible phone numbers (443-423-0000 through 443-423-9999).

Browse Numbers in This Prefix

443-423-0000-0999 443-423-1000-1999 443-423-2000-2999 443-423-3000-3999 443-423-4000-4999 443-423-5000-5999 443-423-6000-6999 443-423-7000-7999 443-423-8000-8999 443-423-9000-9999

Sample Numbers

(443) 423-0000 (443) 423-1234 (443) 423-2000 (443) 423-3333 (443) 423-4444 (443) 423-5555 (443) 423-6000 (443) 423-7777 (443) 423-8888 (443) 423-9999