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Interstate Services Fee (ISF)

CenturyLink charges this fee when a residential customer chooses one of our long distance plans. It does not, however, apply to international long distance. The fee is applied as a single charge per account.

Looking for exact amounts for taxes and fees?

We wish we could simply provide a list! However, there are thousands of possible combinations based on your location and services. For this reason, specific taxes and fees can only be found on your individual bill.  Learn how to view your bill in My CenturyLink. 

Who gets the money?

This is used by CenturyLink to recover some of the costs of offering long distance service.

Also called:

  • National Access Fee
  • Presubscribed Line Charge

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