If I am right, then the first digits in the IP address stand for the country. Meaning that those servers are in different countries and not all in Netherlands.
Well. If you´d ask me, I´d say: Remove the Razorbacks and maybe even the Byte Devils (I believe there were some rumours about them being fishy as well).
The real Razorback servers were taken down by police / authorities (at least a year ago, I think), and new Razorback servers with different IPs appeared a few days after that. There was a general warning posted at all ed2k boards, and I believe these servers are now included in every IP filter.
Or if you want more reliable information, search the forums @ emule-project.net.