Who called from 3051084020

Same as you all.  I didn't pick it up, called back and got the 3 tones (invalid number).  I  notice several of you are with T-Mobile.  I too am with T-Mobile and wonder if it is specific to them?  If everyone could include their carriers, it would help diagnose.  Thanks.

Got a call on my personal phone with Verizon Wireless from this number.  10 minutes later got a call on my work(Police Department) Nextel/Sprint phone.  Real Nice.  What's this world coming to ?????

Ya, I have t-mobile and I got the same random recording.  I just hope they don't keep calling...

received same call but I didn't answer due to strange phone number.  I have ATT as my provider.  No espanol!

Same senario and same phone number here... Verizon is my carrier