Actually, they give a pretty good idea how they do what they do on the
website:
"How it works?
We have a system running in background that monitor changes on .COM
and .NET domains, this system update our domains nameserver database
monthly."
all public info...
Though really, doesn't explain the omissions very well.
explains omission of some domains but not all.
Still - how they monitor changes in .com domains?
can i transfer whole .com domain? or .pl
primary/secondary single DNS.
not entirely practical, of course.
unfortunately.
For everything i always use a rule - service as close to client as
possible. But secondary DNS by definition should be far from primary.