However i am still hesitated in registering it because i have an experience in registering a domain name which is a local administration site in Japan but happened to be banned by google with unknown cause. (at least i dont know why it got banned)
Is there a place where i can check whether the domain name that is available since september this year but still under some kind of google black list?
Thank you in advance.
Only Google knows and Google won't tell.
You take your chances. You build a new, quality site. You wait. Nothing happens? You make a reinclusion request. You take your chances.
Any website that tells you "they have the answer" is not telling the truth or is not predicting the future with the requisite certainty you need for critical decisions. Only Google knows.