Source hierarchy
Official provider pages and official sources such as NANPA, FTC, and FCC take priority. Provider marketing describes stated scope, not guaranteed performance. Secondary claims are not converted into facts without a source.
Unknown means unknown
We do not fill missing prices, trial lengths, database sizes, user counts, or accuracy rates. A blank field is more honest than a stale or invented number.
How comparisons are written
The same categories are applied across services. Commercial links do not change the standing ranking rule or the wording of limitations. Service marks belong to their owners.
Corrections
When a factual error is identified, the registry and affected pages are rebuilt. Contact us with the URL, disputed sentence, and a primary source.