Editorial policy

We use official provider sources for billing service links. A source review date records an actual editorial check; it is not a guarantee that every lookup works or that a particular bill has been issued.

Automated link checks record HTTP availability only. They do not verify tariffs, customer bills, application status or factual changes. Automated guide drafts require editorial review before publication.

We update permanent provider pages instead of creating repetitive monthly copies. Rates and deadlines are published only when supported by a current official source. Calculator assumptions are explained beside the tool.