OREANDA-NEWS. Fitch Ratings has assigned a 'BBB-/RR2' rating to Qwest Corp.'s (QC) offering of senior unsecured notes due 2056. QC is an indirect wholly owned subsidiary of CenturyLink, Inc. (CenturyLink). Net proceeds from the offering, plus cash on hand, primarily will be used to retire all or a portion of $661 million 7.375% notes due 2051. QC's and CenturyLink's Issuer Default Rating (IDR) is 'BB+' and the Rating Outlook is Stable.