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I created a new subdomain:

Sometimes, the blog is accessible without any problems, but other times it's not, just like now at this moment (14-Nov-2013 12:57 PM Lebanon Local Time).

Yesterday at night it was working. I've been having this problem for days.

If I ping the subdomain, under Windows:

Ping request could not be find host Please check the name and try again.

If I try tracert:

Unable to resolve target system name

And with nslookup I don't get any records, with my humble knowledge, it seems as DNS problem. But why would it work sometimes? and not other times?

Note that the response of the previous commands are instantaneous (in case you need to check some packets or something).

I'm also using the Global Google DNS (

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1 Answer 1

up vote 4 down vote accepted

You have a problem with the nameserver (NS) records for

$ dig NS

;; ANSWER SECTION:      1800    IN  NS      1800    IN  NS      1800    IN  NS      1800    IN  NS      1800    IN  NS

You are specifying two companies as handling your DNS: and This is usually a mistake. You usually want to have one company handling your DNS. Otherwise you have to keep your DNS records in sync between two different companies.

Indeed, in your case, the server knows about blog but the server doesn't know about it.

$ dig
;; ANSWER SECTION: 86400   IN  A

$ dig
;; Query time: 165 msec
;; WHEN: Thu Nov 14 07:06:06 2013
;; MSG SIZE  rcvd: 115

The reason that it works only some of the time is that the DNS entry is sometimes fetched from the servers (and it works), and is sometimes fetched from the servers (and it doesn't work).

You will probably want to remove the records from your DNS NS records. They can be edited through your domain registrar.

Removing the extra NS records may take a day or more to resolve the problem. In the meantime you could also add the A record for to the servers so that it can be resolved no matter which name server is chosen.

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