server 2008r2, no internet access

I have a DC on a network that is working perfectly for the LAN and was working on WAN until recently.  I've check dns, it will not ping 8.8.8.8 it will ping the gateway. I have users using it with no problem on VPN and locally.  the strangest thing is it will resolve with an IP address if I ping www.google.com it resolves to 173.194.46.84.  
I've flushed DNS, rebooted server, I'm not sure what else to do.  Any ideas?
desireelacPresidentAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Change the IP of the DC.  Try an IP higher, lower, and in the DHCP range.
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