I had a person try to reach me by using this number when I refused to give them credit card information in a suspected repackaging scam after meeting them on the internet.  We had previously e-mailed and sometimes I had done the e-mailing from my phone.  BEWARE!

I donno about that specific number, but I think Google Talk is using the 406 area code as a place to originate SMS from.  I see lots of TXT on my fone records from that area code that are almost assuredly from Google Talk

This number has shown up several times recently on our daughter's SMS message list (both as Incoming and Outgoing).  Is this a number associated with Google Talk's SMS functionality?