VIA E-MAIL Barry Ohlson Vice President, Regulatory Affairs Cox Communications, Inc. 975 F Street NW, Suite 300 Washington, D.C. 20004 barry.ohlson@coxinc.com Re: Applications of T-Mobile US, Inc. and United States Cellular Corporation for Consent to the Transfer of Control and Assignment of Certain Spectrum Licenses, Authorizations, and Spectrum Leases (GN Docket No. 24-286); Request for Data from Cox Communications, Inc. Dear Mr. Ohlson: T-Mobile US, Inc. (T-Mobile) and United States Cellular Corporation (UScellular) have filed applications pursuant to sections 214 and 310(d) of the Communications Act of 1934, as amended (the Act), 47 U.S.C. §§ 214, 310(d). seeking Federal Communications Commission (Commission or FCC) consent to the transfer of control and assignment of certain spectrum licenses, an international section 214 authorization, and spectrum leases held by UScellular and its subsidiaries to T Mobile. Applications of T-Mobile US, Inc. and United States Cellular Corporation for Transfer of Control and Assignment of Certain Licenses, Authorizations, and Leases, GN Docket No. 24-286, ULS File No. 0011180491 (Lead Section 310(d) Application) (filed Sept. 13, 2024); Application of T-Mobile US, Inc. and United States Cellular Corporation for Assignment of International Section 214 Authorization, ICFS File No. ITC-ASG-20240913-00139 (filed Sept. 13, 2024). In addition, as part of the proposed transaction, the parties have filed a series of short-term spectrum manager leases for a period not to exceed one year after the closing of this transaction. T-Mobile and UScellular Seek FCC Consent to the Proposed Transfer of Control and Assignment of Certain Spectrum Licenses, Authorizations, and Spectrum Leases held by UScellular to T-Mobile, GN Docket No. 24-286, Public Notice, DA 24 1115 (WTB Oct. 30, 2024) (Comment Public Notice). On September 11, 2024, a public notice was released that announced the opening of a docket and ex parte status of discussions related to the proposed transaction. Federal Communications Commission Opens Docket for Proposed Transfer of Wireless Operations, Customers, and Certain Spectrum Licenses and Spectrum Leases of UScellular to T-Mobile, GN Docket No. 24-286, Public Notice, DA 24-925 (WTB Sept. 11, 2024). On October 30, 2024, the Commission accepted the applications for filing and established a pleading cycle for the proposed transaction. Comment Public Notice. For the Commission to complete its review of the applications and make the necessary public interest findings under sections 214 and 310(d) of the Act, 47 U.S.C. §§ 214, 310(d). we require data from Cox Communications, Inc. If necessary, we will follow up with additional requests for information and/or data. Accordingly, pursuant to section 308(b) of the Act, 47 U.S.C. § 308(b). we request that Cox Communications, Inc. provide data as requested in the attached Data Request. We would appreciate receiving Cox Communications, Inc.’s response to the Data Request no later than May 13, 2025. Your responses should be filed with Marlene H. Dortch, Secretary, Federal Communications Commission, in GN Docket No. 24-286. The Protective Order provides instructions for submitting filings that contain Confidential and Highly Confidential information. Applications of T-Mobile US, Inc. and United States Cellular Corporation for Consent to Transfer Control of Licenses and Authorizations, GN Docket No. 24-286, Protective Order, DA 24-928 (WTB Sept. 11, 2024). For any electronic filings made using the Commission’s Electronic Comment Filing System (ECFS), parties also should serve the documents via e-mail to: (1) Susannah Larson, Wireless Telecommunications Bureau, susannah.larson@fcc.gov; (2) Nick Copeland, Economic Analysis Division, Office of Economics and Analytics, nicholas.copeland@fcc.gov; (3) Stacy Ferraro, Competition & Infrastructure Policy Division, Wireless Telecommunications Bureau, stacy.ferraro@fcc.gov; (4) Stephanie Asous, Mobility Division, Wireless Telecommunications Bureau, stephanie.asous@fcc.gov; (5) Nadja Sodos-Wallace, Broadband Division, Wireless Telecommunications Bureau, nadja.sodoswallace@fcc.gov; and (6) Joel Rabinovitz, Office of General Counsel, joel.rabinovitz@fcc.gov. Any submission emailed to these individuals should include in the subject line of the email: (1) GN Docket No. 24-286; (2) the name of the submitting party; and (3) a brief description or title identifying the type of document being submitted (e.g., GN Docket No. 24-286, Cox Communications, Inc., Response to Data Request). Please coordinate with Commission staff to discuss an acceptable format for submission of the requested data, as indicated in the Instructions attached to the Data Request. If you have any questions regarding this matter, please contact Susannah Larson, at susannah.larson@fcc.gov or Nick Copeland, at nicholas.copeland@fcc.gov. Sincerely, Joel Taubenblatt Kate Matraves Acting Chief Acting Chief Wireless Telecommunications Bureau Office of Economics and Analytics Attachments Data Request Cox Communications, Inc. GN Docket No. 24-286 April 22, 2025 1. Provide data on the Company’s subscribers and revenues and costs, as specified in Attachment A. The term “Company” means Cox Communications, Inc., its domestic and foreign parents, predecessors, divisions, subsidiaries, affiliates, partnerships, and joint ventures, and all directors, officers, employees, agents, and representatives of the foregoing. The terms “parent,” “subsidiary,” “affiliate,” and “joint venture” refer to any person in which there is partial (10 percent or more) or total ownership or control between the company and any other person. Instructions 1. The specific requests made herein are continuing in nature. The Company is required to produce in the future any and all data and information that are responsive to the requests made herein but not initially produced at the time, date, and place specified herein. In this regard, the Company must supplement its responses (a) if the Company learns that, in some material respect, the data and information initially produced were incomplete or incorrect or (b) if additional responsive data or information are acquired by or become known to the Company after the initial production. The requirement to update the record will continue until the Commission’s decision regarding the Transaction is no longer subject to reconsideration by the Commission or to review by any court. 2. Submit responses to this Data Request in electronic form. The Commission does not require the submission of paper copies of these data at this time, but reserves the right to require their submission at a later time. 3. Contact Commission staff to discuss an acceptable format for the submission of all data. 4. Data provided in response to this Data Request should include a list of all parameters/assumptions on which the data are based. 2