Called the number back it was answered and voice said if you're calling this number back from your caller id please listen to a two minute message about a business opportunity. Blocked
Got a call from this number (5412550211) on Jan. 27, 2017, 5 pm MST. It was a recording from some sort of telemarketing, and I hung up. Interestingly, this call was to a Skype number I use which is listed in only ONE place on the internet: for an internet domain entry at Network Solutions. Spammers haven't called this number in over 2 months (since Nov. 2016), but had been calling this Skype number more regularly from June to November 2016. Either I'm being called via random number generation, or the spammers have figured out how to get around improved number harvesting from the Network Solutions (or other) websites that list internet domain owners.