We often see that some of our clients report that they are not able to access one of their websites, while everyone else outside of their company network could.
If you’ve ever experienced this same problem, you’ve probably pulled out your hair, fighting with the customer support personnel , probably getting nowhere (because truth be told, most of them don’t really know what they are doing beyond what they were trained to do).
If you’re having this problem and white-listing your public IP address doesn’t help, then the problem has nothing to do with the server settings your website is hosted on.
The problem most likely lies with the name servers owned by your internet service provider. When an internet service provider’s nameservers aren’t resolving IP addresses to their respective host names, this prevents you from seeing your website.
To fix this issue, simply following the steps outlined below:
If you’re not using Windows, you can find a list of steps to following here:
You can use any of these available IP addresses you want. It doesn’t matter who your internet service provider is. I’d recommend OpenDNS over any of the others.
DynDNS Internet Guide