# Research datasets

> Open datasets published under CC BY 4.0, as CSV and JSON.

Canonical: https://mobilevalidate.com/datasets

- [Phone numbering-plan metadata changes, 2019–2026](https://mobilevalidate.com/datasets/numbering-plan-changes-2019-2026.md): Every region and country calling code named in the metadata change notes of the open-source libphonenumber library, January 2019 to 23 September 2026: 182 releases, one row per release, change type and code. CSV: https://mobilevalidate.com/datasets/numbering-plan-changes-2019-2026/data.csv
- [US nuisance-call complaints 2026: FTC and FCC aggregates](https://mobilevalidate.com/datasets/us-nuisance-call-complaints-2026.md): Aggregated counts and shares from 362,116 FTC Do Not Call complaints (13 August to 23 September 2026) and FCC unwanted-call complaints (2015 to August 2026): subjects, robocall share, weekdays, states, report lag, caller-number repetition and trend. CSV: https://mobilevalidate.com/datasets/us-nuisance-call-complaints-2026/data.csv