Got a call this morning from this number. Partial message urges us to call the number "about this case." (The recorded incoming message began during our outgoing message, so the first part of the incoming message was cut off.)
Searching elsewhere, I found a report that the caller claims to be from the IRS. The IRS *does not* do business this way! They contact taxpayers in writing. DO NOT give any information to people who call from this number!