Blake Shelton took his friendly rivalry with Adam Levine to new heights on Monday when he tweeted the Maroon 5 frontman's phone number during The Voice. The two coaches had started with some back-and-forth banter on Twitter shortly before the live episode began. I'm seriously amazed at @blakeshelton's stupidity…— Adam Levine (@adamlevine) April 28, 2014 .@adamlevine… I just found the craziest thing in my phone!!! Your PERSONAL cell phone number… hope I'm not stupid enough to tweet it out…— Blake Shelton (@blakeshelton) April 28, 2014 Ya'll! @adamlevine doesn't think I will actually tweet out his personal cell number… he's flirting with danger….— Blake Shelton (@blakeshelton) April 28, 2014 Shelton made good on his threat once the episode began and tweeted the information to his six million plus followers. HEY EVERYONE!!! Here it is: (310) 493-7939