State
Area Code 543
NANP AREA
Local time now
…
Time zone
Eastern
Main cities
—
In service since
2026
When you can make sales calls to 543 numbers
| Every day | 8 AM – 9 PM (federal rule) |
In the called person's local time. Guidance, not legal advice.
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Other area codes in NANP AREA
Questions about area code 543
- Where is area code 543?
- Area code 543 is in NANP AREA, covering parts of the state.
- What time zone is area code 543?
- Eastern time.
- When can telemarketers call a 543 number?
- Federal rules allow sales calls from 8 AM to 9 PM local time.
- Is 543 a toll-free number?
- No. 543 is a regular area code for NANP AREA. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.