---
title: "LookValid research"
url: "https://lookvalid.com/research.md"
canonical_url: "https://lookvalid.com/research"
last_updated: "2026-10-19"
type: "index"
summary: "3 reports built from open datasets and repeatable measurement runs, each with its method, its sample size, a CSV and the script behind it."
---

# LookValid research

3 reports built from open datasets and repeatable measurement runs, each with its method, its sample size, a CSV and the script behind it.

- [US phone numbering landscape](https://lookvalid.com/research/us-phone-numbering-landscape.md): published 2026-10-19
- [Email authentication census: SPF, DMARC and MX across three rank bands](https://lookvalid.com/research/email-authentication-census.md): published 2026-10-19
- [Unwanted-call complaints in FCC data](https://lookvalid.com/research/phone-complaints-fcc.md): published 2026-10-19