how many DNS-servers does NicTool support?
In the commit logs, I see references to the number "10" - is that the current limit?
There used to be hard coded limit of 10 servers. The original developers made a fairly silly design choice which I have since fixed. Partially. Mostly. Or entirely. I don't know for certain, because I haven't tested it. But what I can tell you is that in version 2.10 I redesigned the nameserver data model and removed the limit. Entirely.
However, a few versions later I noticed that the permissions model hadn't been updated. So I fixed that too. I think. Again, I haven't tested what happens with the 12th, 25th, or 100th DNS server. Give it a whirl. Odds are good that it'll just work.