Several companies we know have been receiving emails from more than one company claiming to be the Lead Registrant for the same substance. This has occurred where there is no Lead Registrant officially in place, or even where a Lead Registrant exists, and the substance has been registered.
ECHA has published guidance on how to deal with this situation, see http://echa.europa.eu/view-article/-/journal_content/title/be-aware-of-false-invitations-check-that-the-lead-registrant-is-credible .