Data sources

Where our data comes from

CheckThisBiz combines open business listing data with our own live checks and information from verified owners. Every check on a listing page names its source.

1. Overture Maps Foundation places

Business names, categories, addresses, phone numbers, websites and operating status come from the Overture Maps Foundation places dataset, release 2026-07-22.0, used under the Community Data License Agreement, Permissive 2.0 (CDLA-Permissive-2.0).

Overture combines places data from several contributors. The upstream sources include:

  • Meta: business page data
  • Microsoft: Bing business listings
  • Foursquare: open places data
  • BrightQuery: business records compiled from public filings
  • AllThePlaces: locations collected from brands' own store locators
  • PinMeTo and DAC: listing data submitted by businesses through location-management providers

Each listing page shows which of these sources the listing appears in. We drop places that are not businesses (parks, landmarks, government buildings, places of worship) and exact duplicates. We also drop national chains and franchises: any place tagged as part of a multi-location brand, or whose exact business name appears in 15 or more different cities nationally. See why.

Current directory build: September 19, 2026.

2. Domain registration records (RDAP)

When a live check runs, we look up the business website's domain in the public Registration Data Access Protocol (RDAP) service run by domain registries, reached through the rdap.org bootstrap service. We use the registration date and the registrar name. We don't collect or display personal registrant contact details.

3. Live website checks

Our checker (user agent CheckThisBizBot) requests the first few kilobytes of the business homepage to see whether it loads and whether it loads over HTTPS. Results are stored with the date of the check. See how checks work.

4. Owner-submitted information

Owners who claim and verify a listing can correct their details. Where owner-supplied details are shown, they are marked as coming from the owner. We review claims by hand, but we can't guarantee that everything an owner tells us is accurate.

Attribution

Listing data © Overture Maps Foundation contributors, available under CDLA-Permissive-2.0. Map tiles © OpenFreeMap, map data © OpenStreetMap contributors.

If you reuse data from this site, keep the Overture Maps Foundation attribution and license notice, as CDLA-Permissive-2.0 requires. Our own check results, scores and page text are not covered by that license.

How often data is updated

  • Listing data: we plan to refresh from each new Overture release, roughly monthly.
  • Live website and domain checks: run on demand from a listing page, and marked for re-checking after 30 days.
  • Owner corrections: applied after review.

Something wrong? Report or correct a listing.