It is going to be a bit sporadic for the next few hours. Everyone's internet service provider will be using a different "Domain Name Server (DNS) Address" and your modem will normally be set to "Get Automatically from ISP".
What the Domain Name Server does is resolve the written domain name, in the case of say google.com, into an ip address such as 216.58.207.206 which will take you straight to Google's dedicated server.
You can copy that ip and post it into the address bar on your browser and it will take you directly to Google.
It is a bit more complex in the case of shared hosting, such as we use, but you get the general idea.
Just about every service provider has their own domain name server and it takes a little while for a change to be propagated throughout the net. For this reason some will report it as working whilst others will have to be patient.
