State
Area Code 443
Baltimore, Annapolis, Towson, Maryland
Local time now
…
Time zone
Eastern
Main cities
Baltimore, Annapolis, Towson, Columbia, Glen Burnie, Catonsville
In service since
1997
When you can make sales calls to 443 numbers
| Monday – Friday | 8 AM – 8 PM |
| Saturday | 8 AM – 8 PM |
| Sunday | 8 AM – 8 PM |
In the called person's local time. Guidance, not legal advice.
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Other area codes in Maryland
Questions about area code 443
- Where is area code 443?
- Area code 443 is in Maryland, covering Baltimore, Annapolis, Towson, Columbia.
- What time zone is area code 443?
- Eastern time.
- When can telemarketers call a 443 number?
- Federal rules allow sales calls from 8 AM to 9 PM local time, and Maryland has stricter hours shown on this page.
- Is 443 a toll-free number?
- No. 443 is a regular area code for Maryland. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.