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"Unable to resolve host" errors from specific ISP

Hi -

 

We have seen a situation happen several times in the last two months where customers using a particular ISP (CenturyLink in the Denver metro area) are unable to resolve one of our hostnames for typically 30-60 minutes at a time. They see an "Unable to resolve host" error message.

 

Customers outside of CenturyLink are not affected during this time, so I strongly suspect it is a CenturyLink issue, but I am wondering if there is something specific we can do on the GoDaddy DNS side to help. Would changing our default nameservers help? Is there any sort of a resync or refresh that we can initiate (or request) that would update both GoDaddy nameservers as well as downstream DNS caches? What about changing the TTL (currently set to 1 hour)?

 

Any thoughts or advice is much appreciated. 

1 REPLY 1
Super User I
Super User I
Solution

Re: "Unable to resolve host" errors from specific ISP

@accelerate 

 

It sounds like the DNS servers for Centruylink in that region could be overloaded on DNS requests. You might check how many hops its taking from a Centruylink customer. 


Very Respectfully,

Drew Davis
Navy Veteran and Entrepreneur | GoDaddy Pro user | "Proud to be serving others!"

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