Yes, domain names can be banned on 443.
It's inexplicable that when I turn on SSL, the website won't load. If I turn off SSL, it can be accessed again. I haven't tested whether it works in mainland China or not. In three machines, one is Hong Kong, another is Seattle and the last one is Los Angeles. All of them fail to access 443. But both Hong Kong and Los Angeles can access 80. The other machine in Seattle failed to test but all other domains use 443 normally. Now, I'm replacing the domain with 80 and redirecting the new domain to its 443 port. Will major search engines still work after the domain is changed? Because at first, I used HTTPS. Will it fail if I go to 80 and try to modify the domain's 443 port? I'm totally lost. Are there any blocked 443 ports left?
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