[ Thanks to Edmundo
for this link. ]
“Very recently I’ve been involved in setting up a site
that uses Google Maps API. When you want to use the API you have to
create a key that is generated according to the name of the site
but, as of now, the DNSs of the name we want to use are not
pointing to our hosting. I could use the IP address of the host
where the site is, right? Well, no. It’s a shared hosting so
requests have to be made by name.“In this case I have to fool my host into thinking that the name
we want to use is mapped to an IP without going through public DNS
resolution.”