Some of our users reported that DNS Override feature works properly with Wi-Fi networks, but it doesn’t affect the cellular connection as expected.
In most cases this is caused by the fact that the mobile operator is performing DNS hijacking. This means that DNS Override app does his job properly and the DNS queries are targeting DNS servers selected by the user, but the ISP is then intercepting this traffic and forcing DNS resolution using it’s own DNS resolvers.
We would like to start collecting information on ISPs who perform DNS hijacking, so we can inform our users about this problem.
If you have information on mobile networks who hijack DNS requests, please let us know in the comments below. We’ll update our list accordingly. Please post the name and country of origin of the ISP / mobile network.
Below you can find information if selected mobile networks hijack DNS requests:
|Country||Mobile network||DNS hijacking||Comments|
|Australia||Optus||YES||(MCC 505, MNC 02/90)|
|Denmark||H3G||NO||(MCC 238, MNC 06)|
|Norway||Telenor||NO||(MCC 242, MNC 01/12)|
|Indonesia||PT. Excelcom||YES||(MCC 510, MNC 11)|
|US||AT&T||YES||(MCC 310, MNC 410)|
|US||T-mobile||YES||(MCC 260, MNC 310)|
|Poland||Play||NO||(MCC 260, MNC 06/07/98)|
|Poland||T-mobile||NO||(MCC 260, MNC 02/34)|
|Poland||Plus||NO||(MCC 260, MNC 01)|
|Poland||Orange||NO||(MCC 260, MNC 03/05)|
|Singapore||M1||NO||(MCC 525, MNC 03)|
|Singapore||Singtel||NO||(MCC 525, MNC 01/02/07)|