Getting text messages about a microsoft security code

Hello, today I have just received 3 separate texts from 2 different numbers (at least one was a mobile (Cell) phone number. 2 were from a +45 international dialing code (Denmark) and one was +61 (Australia) and was a cell phone number. They were both sending "security codes" and were followed from a phone call from a +7 (Russia) number which I did not answer. I have had no trouble accessing any microsoft accounts and my xbox live account has not been used in a few years due to my xbox getting a RROD for a second time. Is this pointing to an xbox live data issue or a common scam sent to random numbers?