DNS Problems?

Hi,

Over the last two days or so we have been having intermittent problems with our main domain. You can ping all address' on the server including subdomains of the main domain, but there is problems when trying to access this one domain directly. Also this problem is only happening with some ISP's over here in the UK. For example when connecting using Freeserve you get the problems but not with AOL.

I hope I have explained this okay, basically I am wondering where the problems lie. Is it a problem with just the ISP or is it a problem with the server or with NAC (server is with pwebtech)?

Thanks.

 

 

 

 

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