The server rejects a validator.w3.org 403 connection error.
If the "new" computer goes to the address - all the rules.
But as soon as you open the API link: http://validator.w3.org/check?uri=http%3A%2F%2Fwww.yandex.ru%2F&verbose=0&ss=0&outline=0&output=soap12
Blocks of IP addresses and an even more impossible transition to the main site
Why and how to fix it?
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