The "Block B" at 17 Silvertown Way has now been completed, people are already living there. The address has been updated and is now live.

The full address is:
Falconbrook Gardens
17 Silvertown Way
E16 1LL

I don't know the exact range of addresses at Falconbrook, but I can guess it goes for numbers between 90 and 140 or so, for example:
102 Falconbrook Gardens
17 Silvertown Way
E16 1LL