If you have the "dig" command available on your machine, you can read
its documentation, and play with it. It will make things clear. Look
below: in the first case, there is no A record, but there is a SOA
record. However, the hostname of the SOA is different from the queried
hostname. In the second case, there is no A record, there is a SOA and
the hostname of the SOA and the queried hostname are the same. So in
the first case, we cannot know if the host is registered at all. In
the second case, the hostname is registered for sure, but it has no A
record. (However, subdomains like www.eirtrade.ie can have A records...)
#dig accounts.eirtrade.ie
Sorry, try this with accounts.eirtrade.i instead of
accounts.eirtrade.ie. :-)
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