Check a certificate
Free, and it always will be. A certificate nobody can check is a private note.
What this tells you, and what it does not
It confirms that a certificate exists, the registered name it was issued to, and whether it is current. It does not return a grade or a dossier — those are a judgement about a company, and handing one to whoever knows an identifier is a different act from confirming a certificate is valid. The holder releases them.
It also will not tell you whether a company is certified in general. There is no directory here: this resolves the identifier you were handed, and nothing else. A searchable list of who is verified would be competitive intelligence about our customers.