I try to block whatsapp on my network using OpenDNS.
Web filtering is up. whatsapp.com and whatsapp.net are "always blocked" (see image).
Smartphone is in "plane mode", no data activated and only using the local wi-fi connection.
However, whatsapp application is working on the smartphone !?!? The web address whatsapp.com is indeed bloocked if opened with a networks browser but the whatsapp application working like a charm.
Does someone know if the smartphone application is using another domain (than whatsapp.com or .net) ? I do not see any other explanaition (alternatibely the IP noumber might be harcoded in the application but that sounds dumb).
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