When changing name servers it can take up to 72 hours for all changes to fully propagate over the Internet. In your case the3hm, I see that the correct settings have already propagated now for your domain.
For you NKarst I couldn't find what domain name you might be having issues with, but would assume more than likely it's also a matter of propagation. If you're still having any issues at all please let us know.
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