Pr big question

I posted this question in other forums and didnt find a good answer, so i hope in this forum someone  can give me a clear explanation:

for this question i will call a site with this name: "xxx.com" domain

well xx.com is 5 months old

xxx.com first time available and online: july 10 - 2006
last day available and online:              setember 10 - 2006

according to iwebtool page rank: on setember 9 had pr0 and on setember 10 had pr0

ON setember 11-2006 xxx.copm site was down

on november 8-2006 xxx.com is back

according to iwebtool xxx.com has now pr4

THE QUESTION IS : how?, how is that posible?

xxx.com has alexa 0
backlinks 1, and this site which has a link to xxx.com has pr0

so how is possible that xxx.com has pr4 now

thx for the answer

Are 2 possibilities:
1. You query a google server what was not updated (just check your domain in datacenter query tool from the left menu of this forum) and the site already had PR4 and the google server respinded to you with PR0
2. The domain is redirected to other domain with PR4


2) domain is not redirected to any site
1) checked again and is Pr4

and your comment is?