BSNL 666 plan, BSNL plans for data, BSNL plan info, BSNL internet plans, BSNL free Calla plan, BSNL talktime plans, how to activate BSNL sixer 666 plan, BSNL Rs 666 plan, BSNL free inetrnet trick, BSNL unlimited internet data plan, Process to activate BSNL 666 sixer plan, BSNL 666 plan details, Bharat sanchar Nigam limited (BSNL) is back again with Amazing new plan named “BSNL 666 Sixer plan” where you will Get 2GB internet data + free Calling for th period of 60 days. previously BSNL is offering 444 chaukka plan. now again they are back with new plan known as BSNL 666 sixer plan. You can use 120GB data for 2 months. its a great loot offer for all BSNL users. see the full post till the end to know more about this offer.