[dns-operations] Norton DNS: Symantec emulates OpenDNS and Google

[Stephane Bortzmeyer]

> http://www.h-online.com/security/news/item/Symantec-s-Norton-DNS-service-to-block-malware-1015912.html

> The DNS service runs on servers distributed across twelve data
> centres worldwide. 

Shouldn't we add a few more?