Power of Attorney for Section 16 Reporting Obligations

This filing, identified as Form 3, details a Limited Power of Attorney granted by Paul Blanchett, an officer (SVP & Chief Accounting Officer) of American Tower Corporation, to a group of individuals. This power of attorney authorizes the appointed individuals to execute and file necessary documents, including Forms 3, 4, and 5, with the SEC on behalf of Mr. Blanchett, in accordance with Section 16 of the Securities Exchange Act of 1934. The attorneys-in-fact are empowered to manage Mr. Blanchett's EDGAR account, including appointing administrators and users, maintaining security, and obtaining information about transactions in the Company's securities from third parties. The document clarifies that neither the attorneys-in-fact nor the Company assume liability for Mr. Blanchett's reporting obligations or potential Section 16(b) profit disgorgement. The power of attorney remains effective until Mr. Blanchett is no longer required to file such forms or until it is revoked.