Where is Area Code 443?
Area code 443 is located in the state of Maryland. It serves a variety of regions, counties, and major cities, providing essential telecommunication services to residents and businesses. The area code covers:
- Baltimore
- Annapolis
- Columbia
- Glen Burnie
- Ellicott City
- Dundalk
- Towson
- Bel Air
For more information about the regions and services covered by area code 443, visit the Maryland Public Service Commission.
Maryland Public Service Commission
William Donald Schaefer Tower, 6 St. Paul St., Baltimore, MD 21202 - 6806
Tel: (410) 767-8000 or 1-800-492-0474 (toll-free)
What time zone is 443 area code in the USA?
The 443 area code is situated in the Eastern Time Zone (ET) of the United States. This time zone observes Eastern Standard Time (EST) during the fall and winter months and switches to Eastern Daylight Time (EDT) in the spring and summer months, following daylight saving time practices. For accurate timekeeping, refer to the National Institute of Standards and Technology.
History of the 443 Area Code
The 443 area code was introduced in 1997 as an overlay to the existing 410 area code. This change was implemented to accommodate the growing demand for new telephone numbers in the region. Overlays are a common solution when an area exhausts its available number combinations, allowing for the introduction of new numbers without requiring existing users to change their numbers. For more details on the history and administration of area codes, visit the North American Numbering Plan Administrator (NANPA).
NANPA Mailing Address
One Tower Center Boulevard
Suite 800
East Brunswick, NJ 08816
NANPA Customer Support
Tel: 1-866-623-2282
Email: support@nanpa.com
Fax: 571-363-3838
How Many People Use the 443 Area Code?
The 443 area code serves a significant portion of Maryland's population. The regions covered by this area code are home to millions of residents, contributing to the vibrant and diverse communities within the state. For detailed demographic information, consult the U.S. Census Bureau.
U.S. Census Bureau
4600 Silver Hill Road, Washington, DC 20233
Tel: 301-763-INFO (4636) or 800-923-8282
Is the 443 Area Code Toll-Free?
The 443 area code is a geographic area code, not a toll-free number. It is designated for specific regions within Maryland and is used for local telecommunication services. Toll-free numbers in the United States typically begin with prefixes such as 800, 888, 877, 866, 855, 844, and 833. For more information on toll-free numbers and their operation, visit the Federal Communications Commission.
Federal Communications Commission
45 L Street NE, Washington, DC 20554
Tel: 1-888-CALL FCC (225-5322)
https://www.fcc.gov/