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Exhibit 32.1

Certification Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

        In connection with the Annual Report on Form 10-K for the year ended December 31, 2025 (the "Form 10-K") of Level 3 Parent, LLC ("Level 3"), as filed with the Securities and Exchange Commission on the date hereof, I, Kate Johnson, Chief Executive Officer of Level 3, certify pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge, the Form 10-K fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of Level 3 as of the dates and for the periods covered by such report.

        A signed original of this statement has been provided to Level 3 and will be retained by Level 3 and furnished to the Securities and Exchange Commission or its staff upon request.

Date: February 20, 2026						/s/ Kate Johnson
						Kate Johnson Chief Executive Officer