I am watching it now, and it appears that Jeff accidentally gave out his own phone number.
I don't think this is the case. Unless I missed it happening another time, Jeff said "Yak Bomb" which translates to (707) 925-2662, his public Google Voice number. It's on his Tumblr.
I believe Ben said "Exit Flu" which is the aftershow's number.
Huh. I wonder why they took it down?