American Tower
American Tower Corporation is a major global digital-infrastructure real estate company and one of the world’s largest publicly traded real estate investment trusts. The company owns, operates, and develops communications sites used by wireless carriers, broadcasters, government agencies, internet providers, and other telecommunications customers. Its portfolio also includes interconnected U.S. data centers through CoreSite.
American Tower’s business model is centered on leasing vertical tower space, ground space, rooftop sites, distributed wireless infrastructure, and data-center capacity to multiple tenants. Because several communications providers can use one tower or facility, the company’s shared-infrastructure model helps carriers expand coverage and capacity without independently owning every physical site.
As of late 2026, American Tower reported a portfolio of more than 148,000 communications sites, together with a highly interconnected U.S. data-center platform. The company is currently led by Steven O. Vondran, President and Chief Executive Officer. American Tower trades on the New York Stock Exchange under ticker AMT and operates as a REIT.
American Tower Corporation
222 Berkeley Street
Boston, MA 02116
United States
American Tower’s 2025 Form 10-K identifies this as the company’s principal executive office.
222 Berkeley Street
Boston, MA 02116
Current 2026 SEC filings and proxy materials use this Boston address for corporate and Investor Relations correspondence.
American Tower privacy materials also continue to reference 116 Huntington Avenue, Boston, MA 02116 for certain privacy and legacy contact functions. This should not replace 222 Berkeley Street as the current principal executive-office address.
Older materials may list 116 Huntington Avenue as the main headquarters. Current SEC filings now identify 222 Berkeley Street, Boston, MA 02116 as the principal executive office, so the Berkeley Street address should be used for the updated headquarters page.
617-375-7500.
American Tower does not operate a conventional consumer Customer Service line because its customers are primarily telecommunications and infrastructure companies.
222 Berkeley Street, Boston, MA 02116
222 Berkeley Street, Boston, MA 02116
Privacy: privacy.officer@americantower.com
Data Center Support: support.datacenters@americantower.com.
Digital Infrastructure, Telecommunications Real Estate, Wireless Towers, Data Centers and REIT
1995
4,866 full-time employees as of December 31, 2025, including 2,388 in the U.S. and 2,478 internationally.
148,000+ sites worldwide as of late 2026.
Not publicly listed as general walk-in hours.
https://www.americantower.com/
https://www.americantower.com/investor-relations/
American Tower leases space on communications towers to wireless carriers and other communications customers. Multiple tenants can place antennas, radios, cables, and associated equipment at the same tower site.
Customers can lease ground space at tower compounds for equipment cabinets, shelters, generators, power systems, and other supporting infrastructure.
American Tower manages and leases rooftop locations where network operators can install wireless equipment in dense urban or commercial areas.
The company provides site-development services that can include site acquisition, zoning support, permitting, construction management, and related deployment assistance.
Colocation allows wireless operators to add equipment to existing American Tower sites instead of constructing new towers. This can reduce deployment time and capital requirements.
American Tower can construct new towers in markets where customers need infrastructure and a suitable existing site is not available.
The company participates in distributed communications infrastructure designed to improve wireless coverage and capacity in specific locations.
CoreSite, an American Tower business, operates highly interconnected U.S. data centers that connect enterprises, cloud providers, networks, and digital platforms.
CoreSite customers can lease secure data-center capacity for servers, storage, networking hardware, and related technology infrastructure.
CoreSite provides interconnection services that allow customers to connect directly with cloud platforms, networks, partners, and other businesses within data-center ecosystems.
American Tower supports edge-computing and data-center solutions intended to bring digital infrastructure closer to network users and applications.
Customers and contractors can use American Tower’s site-access processes to schedule and manage work at communications sites.
American Tower maintains 24/7 network operations capabilities for urgent tower-site and infrastructure issues, including specialized environmental and emergency site access.
The company maintains environmental programs covering tower operations, wildlife protection, permitting, and regulatory requirements, including its Bird Watch program.
617-375-7500.
617-375-7500
617-375-7500
617-375-7500
No conventional retail Customer Service number is published.
Support is business-unit specific.
No universal consumer toll-free line is published.
American Tower’s leasing and sales contacts are handled through specialized regional and customer teams rather than one universal public sales number.
No universal public billing number is prominently listed.
Regional contacts vary by market.
Not generally applicable.
Country-specific American Tower subsidiaries maintain local contacts.
877-518-6937
American Tower publishes this 24/7 Network Operations Center line for urgent site and environmental work requests.
877-282-7483
Also represented as
877-ATC-SITE.
617-375-7517
Current Investor Relations contact
Spencer Kurn, Senior Vice President, Investor Relations.
American Tower’s current earnings releases primarily publish Investor Relations contacts rather than a separate permanent press line.
No universal applicant HR number is publicly promoted.
Not applicable.
For general corporate or Investor Relations matters, call 617-375-7500. Investors can contact the dedicated Investor Relations team at 617-375-7517. When calling, have the property, tower, site ID, lease, customer account, transaction, or shareholder matter clearly identified so the representative can route the request correctly.
Customers and contractors working at tower sites should use American Tower’s site-access systems and 877-ATC-SITE (877-282-7483) when they need assistance gaining access. Urgent after-hours or environmental site issues can be routed through the 24/7 Network Operations Center at 877-518-6937.
For data-center matters, CoreSite and American Tower’s data-center support systems should be used instead of the corporate headquarters line. Current portal support includes support.datacenters@americantower.com for customer portal issues.
Complaints may involve tower access, lease administration, construction activity, property issues, environmental concerns, invoices, site conditions, data-center services, privacy, or communications with a regional operating team. Before escalating, gather the site ID, property address, lease or agreement number, invoice, photographs, prior email correspondence, and names of the employees or contractors involved.
Begin with the American Tower business team responsible for the site or service. For a tower site, use the applicable site-access or leasing contact. For data-center services, use CoreSite support. Explain the issue, provide the site or account information, and request that the matter be documented.
Site-access problems should use 877-ATC-SITE, environmental or Bird Watch matters can use 877-518-6937, and privacy complaints can use privacy.officer@americantower.com. Investor concerns should go to Investor Relations.
If the initial team cannot resolve the issue, ask for review by a regional manager, leasing manager, operations manager, environmental specialist, data-center manager, or other relevant leader. Provide the earlier case history and clearly identify the unresolved issue.
Submit a written complaint to the relevant American Tower team or through the business portal used for the account. Written correspondence should include the site number, dates, contract or lease information, supporting photographs, and requested remedy.
Unresolved corporate matters can be escalated in writing to American Tower Corporation, 222 Berkeley Street, Boston, MA 02116. Include prior case details, dates, and copies of relevant documentation.
Contract disputes should follow the notice and dispute provisions in the applicable lease, service agreement, colocation agreement, or data-center contract. Privacy complaints should use the Privacy Officer, while environmental complaints can be routed to the appropriate American Tower environmental team.
The correct regulator depends on the issue. Tower construction and communications infrastructure may involve the Federal Communications Commission, local zoning authorities, environmental agencies, aviation authorities, or wildlife regulators depending on the complaint.
Because American Tower primarily operates business-to-business infrastructure rather than retail consumer services, ordinary consumer-protection processes may not be the main route. Property owners and commercial customers should first use their contractual remedies, while privacy and billing disputes can use applicable state or federal processes.
If contractual escalation does not resolve the matter, review the applicable lease, service contract, or site agreement for mediation, arbitration, venue, notice, and litigation requirements. Before taking formal action, preserve all agreements, amendments, invoices, emails, photographs, site records, and proof of prior complaint attempts.
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