# CAs MUST corroborate the results of domain validation and CAA checks from multiple Network Perspectives where specified. — TLS certificate and CA requirement effective dates (CA/Browser Forum, Chrome, Mozilla)

For CAs MUST corroborate the results of domain validation and CAA checks from multiple Network Perspectives where specified., requirement is CAs MUST corroborate the results of domain validation and CAA checks from multiple Network Perspectives where specified; effective date is 2025-03-15; baseline requirements section is 3.2.2.9; authority is CA/Browser Forum TLS Baseline Requirements; scope is all publicly-trusted CAs issuing TLS server certificates, recorded from its source on 2026-08-05.

- **Requirement:** CAs MUST corroborate the results of domain validation and CAA checks from multiple Network Perspectives where specified. _(verified: appears in the quote below)_
- **Effective date:** 2025-03-15 _(verified: appears in the quote below)_
- **Baseline Requirements section:** 3.2.2.9 _(verified: appears in the quote below)_
- **Authority:** CA/Browser Forum TLS Baseline Requirements _(our reading, not quoted from the source)_
- **Scope:** all publicly-trusted CAs issuing TLS server certificates _(our reading, not quoted from the source)_

## What the source says

> 2025-03-15 | 3.2.2.9 | CAs MUST corroborate the results of domain validation and CAA checks from multiple Network Perspectives where specified.

## Source

- https://cabforum.org/working-groups/server/baseline-requirements/requirements/

Last verified: 2026-08-05. Review by: 2026-11-03.
Part of [TLS certificate and CA requirement effective dates (CA/Browser Forum, Chrome, Mozilla)](https://referencesource.org/tls-certificate-requirement-effective-dates/).