Mandatory 10-digit dialing begins September 19

Mandatory 10-digit dialing begins September 19

HORRY COUNTY, SC (WMBF) – Beginning September 19, all local calls placed within South Carolina's 843 and new 854 area codes, must be placed by dialing the three digit area code, followed by the seven digit local telephone number, (10-digit number).

New area code, 854, will be added to the 843 area code region to guarantee an ongoing supply of telephone numbers. The South Carolina Public Service Commission ordered an area code overlay for the 843 area code region, which mainly covers the Charleston, Hilton Head Island, Myrtle Beach and Florence communities.

Beginning October 19, customers requesting an additional line, new service or moving their service within the 843 area code region may be assigned a number with the new 854 area code.

HTC says, the most important facts consumers and businesses need to know about the upcoming 843 area code overlay are:

  • style="margin-bottom:0.0001pt;text-align:justify;">Your telephone number, including current area code, will not change.
  • style="margin-bottom:0.0001pt;text-align:justify;page-break-after:avoid;">You will need to dial area code + telephone number for all local calls.
  • style="margin-bottom:0.0001pt;text-align:justify;page-break-after:avoid;">You will continue to dial 1+ area code + telephone number for all long distance calls.
  • style="margin-bottom:0.0001pt;text-align:justify;">What is a local call now will remain a local call.
  • style="margin-bottom:0.0001pt;text-align:justify;">The price of a call, coverage area, or other rates and services will not change due to the overlay.
  • style="margin-bottom:0.0001pt;text-align:justify;">You can still dial just three digits to reach 911.
  • style="margin-bottom:0.0001pt;text-align:justify;">If 211, 311, 411, 511, 611, 711 or 811 are currently available in your community; you will still dial these codes with just three digits.

Businesses and customers may need to reprogram automated dialing equipment, applications and any other devices programmed to dial seven digit numbers to use the new 10-digit dialing.

For more information visit or Customers with questions are asked to call (843) 365-2154.

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