Proxy solves my ndsbbs problem

I was wondering why I have problem connecting to NDS bbs so for several days, but didn't have time to resolve it. I finally got some time today, and found that some how I cannot access the site unless I use proxy. Luckily my friend told me this Free Proxy web site, so I picked this 202.88.211.57 IP with port 80, and I can now access the NDS BSS site with no problem. I still have no idea why I was blocked, but .... who cares.