🇺🇸 443 area code
Area code 443 covers Baltimore, Annapolis, Salisbury and Bel Air and the surrounding area in Maryland. It shares that territory with 410 and 667, so the same neighbourhood can have numbers in any of them. Enter a 443 number below for a free check before you call back.
- Location: Baltimore, Maryland
- Time zone: Eastern (UTC−5)
- In service since June 1, 1997
Consultar um número
Validade, operadora, tipo de linha e região na primeira passagem.
Area code 443 at a glance
- Area code
- 443
- Location
- Maryland, United States
- Main cities
- Baltimore, Annapolis, Salisbury, Bel Air, Hanover, Ocean City
- Time zone
- Eastern (UTC−5)
- Local time now
- —
- In service since
- June 1, 1997
- Created from
- 410
- Overlay codes
- 410, 667
- Codes split from it
- 667
- Local calls
- Dial 10 digits
- Number format
- (443) 555-0123
- From abroad
- +1 443 555 0123
Cities in area code 443
- Baltimore
- Annapolis
- Salisbury
- Bel Air
- Hanover
- Ocean City
- Owings Mills
- Towson
Is a 443 call a scam?
An area code tells you where a number was first assigned, not where the caller is. Mobile numbers keep their area code when people move, and internet (VoIP) numbers can be picked in any area code — so a 443 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 443 number to people in Maryland because a local-looking call is more likely to be answered. If a 443 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 443
443 entered service on June 1, 1997, as an overlay on 410, which had run short of numbers.
It is part of the 410/443/667 overlay: the codes cover the same area, and a new line there can be given a number in any of them. Two neighbours — or two phones in one household — can have different area codes. That is also why local calls need the full ten digits.
As the region grew, 667 was carved out of or added to 443.
Area codes
More area codes in Maryland
All Maryland area codes · Every North American area code · International country codes
Perguntas frequentes
Area code 443 questions
Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.
Where is area code 443?
Area code 443 is in Maryland, United States. It covers Baltimore, Annapolis, Salisbury, Bel Air, Hanover and Ocean City.
What time zone is area code 443?
443 is in the Eastern (UTC−5) time zone, and observes daylight saving time.
What area codes overlay 443?
410 and 667 serve the same area as 443. Numbers in all of them are local to one another.
When did area code 443 start?
443 entered service on June 1, 1997, created from 410.
How do I find out who called me from 443?
Enter the full number in the lookup at the top of this page. The free check confirms whether the number is valid and shows its carrier, line type and region; a full report adds owner and public-web records where they are available.
Why am I getting calls from area code 443?
If you live in or near Maryland, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 443 callers who will not leave a message are best looked up before you call back.
Got a call from 443?
Run the free check first — validity, carrier, line type and region — and unlock the full report only if you need it.