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.

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