443 Area Code
The 443 area code serves Annapolis, Baltimore, Bel Air, Cockeysville, Columbia in United States. Learn the cities and counties covered, the time zone, dialing format, and how to get a local 443 business number.
Cities & regions in the 443 area code (18)
Frequently asked questions
What area code is 443?+
443 is a North American Numbering Plan (NANP) area code in United States, primarily covering Annapolis, Baltimore, Bel Air, Cockeysville, Columbia.
Where is the 443 area code located?+
The 443 area code is located in United States. It operates on Eastern Time (ET).
How do you dial the 443 area code from abroad?+
Dial your country's international exit code, then +1 443 followed by the 7-digit local number. From inside the US/Canada, dial 1 443 XXX-XXXX.
Can I get a 443 phone number for my business?+
Yes. AstraQom provisions local 443 DID numbers for SIP trunking, hosted PBX, contact centers and toll-free porting — usually within minutes, with no long-term contract.
Get a local 443 number for your business
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AstraQom is an independent global telecom carrier serving 117 countries. We provision local 443 DID numbers, SIP trunks, hosted PBX, contact-center routing and SD-WAN — all on Tier-1 carrier infrastructure with no grey termination and 24/7 multilingual support.