yes,the coupon works both online,and while ordering for a delivery from home.
In my case,when i said the coupon code,the lady said she could not find the coupon on her computer,i told her i had the coupon.
And they she asked the manager,he spoke to me and asked me to read out the coupon.
And he said OK.
Even in the bill,the coupon code was not mentioned.(just Free Pizza was mentioned)
One more thing,Domino's has started to do,is offer anyone who says that "I have a coupon(I mean this specific coupon actually
)",is that they have an offer called BOGO,in which if you buy a LARGE,you'll get a medium free,and if you buy a MEDIUM,get a regular free.
You have to insist with the coupon,or else they'll just try to head you off