To date, I have received 6 calls from this number, one of which was at 8:12 a.m. Caller ID shows Denver CO. Have also received numerous calls from two other similar Denver numbers. Never leaves a message. Per comments from other phone sites, this is a telemarketer for the MS Society. That's probably correct, as I donate to them because our daughter has MS. This is really annoying and I will be reporting them to the FTC. I don't care if they are a charity. They are a nuisance and are not permitted to call before 9:00 a.m.