I didn't answer and they left no message. I returned the call and received a recorded greeting giving me the option to opt out of future calls and to allow 72 hours for removal. I'm guessing this covers them in the "rules" pertaining to such calls.
Why do so many people post useless points on here? That doesn't help us learn about telemarketer numbers! When I'm researching numbers here, scrolling through 5 pages of comments that say little more than "They called and never left a message" is a pain in the @$$. Please only post when you have some real information.
I just got a call on my (Canadian) work line from this number. A recorded message was promoting life insurance, stating that they "work with many insurance providers in Canada". Since these bozos are in the US, they can't provide *#$%, and don't have to abide by Canadian DNCL. Business lines aren't covered by the DNCL either, so that's why many company switchboards are now getting such calls. :-(