Currently I'm using iOS devices with OpenDNS (DoH) under Chinese ISPs to protect my privacy.
However, accessing to websites inside China mainland (like Taobao & NetEase) with this becomes laggy, and sometimes even fails to load.
By adding Chinese DNS resolvers like AliDNS, this issue can be solved.
But here comes the problem — all domain names not listed in rule files (like Chinalist) have to be sent to AliDNS, which would roughly indicate my browsing history.
Meanwhile, some Chinese iOS developers like Yachen Liu (developer of Surge, a famous iOS proxy tool) urged on Twitter that using overseas DoH is unnecessary under Chinese network 'cause it's slow, and we don't need this small piece of privacy protection.
So my questions are,
Generally how long do DNS logs last on servers, Permanent Record?
Would the police and other supervisors use DNS logs to AUTOMATICALLY detect and classify users?
For example, when users make DNS requests of political sites like Pincong, Parler, or even Geph, would they get marked by the system as dangerous users?
From the aspect of getting less supervision, would AliDNS (DoH) safer than port 53 ISP DNS resolvers?
How governments of other countries treat these DNS records? I think they may learn from each other.
When using "Exclude Chinese traffic" mode, how Geph handles DNS issues to remain secure & fast? (I've never used this feature.)