Universal Licensing System (ULS)

FCC's licensing system whose bulk extracts (including the l_cell location file) accompany tower registration data; on the Socrata portal the ULS 3650 Locations dataset ships 54 columns and has been static since December 2018.

In this catalog it appears concretely: - FCC Data Hub Licensing and Tower Data — "uls; estimated_size includes l_cell.zip 24.8 MB". - FCC Open Data Portal - Wireless Datasets — "Wireless-category ULS 3650 Locations file, 54 columns".

A label on a listing is not a deliverable: teams that license on a name match often find the shipped files cover a narrower slice than assumed, and backfilling history costs more than the license.

The failure mode is concrete: the label appears in a listing, the delivered files tell a different story, and the gap surfaces mid-project when fixing it is most expensive.

82.4% of the 1,744 cataloged datasets are free to access, and FCC Data Hub Licensing and Tower Data lets you inspect the real artifact before any budget is committed.

Treat every claim of this attribute as testable:

1. Open FCC Data Hub Licensing and Tower Data and confirm its record — "uls; estimated_size includes l_cell.zip 24.8 MB" — against the files you actually receive.
2. Open FCC Open Data Portal - Wireless Datasets and confirm its record — "Wireless-category ULS 3650 Locations file, 54 columns" — against the files you actually receive.
3. Pin down update cadence in writing. Across this catalog, 22.6% of 1,744 datasets refresh daily and 64 still arrive only through a manual request form, so ask exactly how fresh each release is.
4. Check whether definitions are verified at all. Field definitions are verified for 1495 of 1,744 datasets (85.7%), and any source you license should meet that bar.
5. Price the delivery route before the license. In this catalog bulk download is the most common access method (725 datasets) ahead of official APIs (574), and 379 sources still require scraping — a maintenance cost that lands on you, not the vendor.

See the term applied to real records: telecom-tower-reits data.

Adjacent concepts worth reading next: - antenna structure registration - Socrata SODA API