Configuration static dns cannot be parsed so that it cannot be connected to the Internet, and dynamic acquisition can be connected to the Internet normally. Why is this the case?

static dns, which has been used before, has been well used. Yesterday, I suddenly found that I couldn"t parse, but I could ping.
and setting it to dynamic acquisition can connect to the Internet normally. Why is this the case?
is it a local problem or an isp problem?
for a solution

< hr >

just statically changed Ali"s dns, can be connected normally, could dns also be blocked?
for example, the recent "fastest" 1.1.1.1, which can be connected by ping, and ping is delayed by 2ms, but it is a parsing error and does not display the web page.

Network

Mar.06,2021

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