Results in different national google domains

[Blo]

Does it matter whether I am using google.at from Germany or from Austria? Do I get the same search results?
Results seem to be the same on google.de and google.at but I wonder if this just the case because am using the same IP address for calling the services?

[digitalpoint]

It's generally the same, but yes... if you were on a different IP, they would all be different.