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24 owner groups · FCC registrant names

Who owns the towers

Tower companies register structures under dozens of subsidiary names — "CCATT LLC", "SBA 2012 TC Assets, LLC", "Pinnacle Towers LLC". This page groups them into the companies landowners actually deal with, using only the brand in the name or the parent company's own SEC subsidiary list.

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  1. 1Largest owner group American Tower
  2. 2Its structures 19,452
  3. 3Owner groups 24
  4. 4All structures 140,917
American Tower19,452Crown Castle15,473SBA Communications14,039Verizon5,826Array Digital Infrastructure3,963T-Mobile3,696Alltel3,448Tillman Infrastructure2,496Vertical Bridge1,647AT&T1,595BNSF Railway845Industrial Tower and Wireless779Union Pacific Railroad693Harmoni Towers604K2 Towers584Diamond Communications574Octagon Towers566Skyway Towers558Norfolk Southern496Horvath Communications487Uniti Towers404Tarpon Towers377CSX Transportation228TowerNorth219
Constructed FCC-registered structures by owner group, bars to scale. Source: FCC ASR, October 2026.
Owner groupStructuresStatesRegistrant names
American Tower19,4525115
Crown Castle15,4735027
SBA Communications14,0395135
Verizon5,8265114
Array Digital Infrastructure3,963192
T-Mobile3,696498
Alltel3,4483416
Tillman Infrastructure2,496415
Vertical Bridge1,6474816
AT&T1,5954913
BNSF Railway845256
Industrial Tower and Wireless7791012
Union Pacific Railroad693225
Harmoni Towers604364
K2 Towers584453
Diamond Communications574415
Octagon Towers566462
Skyway Towers558331
Norfolk Southern496206
Horvath Communications487347
Uniti Towers404294
Tarpon Towers377323
CSX Transportation228213
TowerNorth219251

Groups are deliberately conservative. A registrant whose name doesn't carry a brand stays under its own name on the county pages even if it belongs to a larger company — Vertical Bridge, for example, files many towers as "VB-S1 Assets, LLC", which is counted here only when the name says Vertical Bridge. Carriers (T-Mobile, Verizon, AT&T) appear because they still own some towers outright; most of the towers they use belong to the tower companies.

Source: FCC Antenna Structure Registration, weekly public access file (r_tower.zip, created 2026-10-18); Crown Castle subsidiaries per its 10-K Exhibit 21 (FY2019). Checked 2026-10-23.