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Understand interaction - google public dns and jquery CDN - conspiracy? :)?
You all heard about "Google public DNS", habrahabr.ru/blogs/google/77199/ and code.google.com/intl/ru/speed/public-dns/
And about jQuery-CDN code.jquery.com
Noticed that many sites work with errors, namely jquery is not loaded. I began to understand, I execute a dns request on my home computer:
$ host -v code.jquery.com 8.8.8.8<br/>
Trying "code.jquery.com"<br/>
Received 33 bytes from 8.8.8.8#53 in 125 ms<br/>
Trying "code.jquery.com"<br/>
Using domain server:<br/>
Name: 8.8.8.8<br/>
Address: 8.8.8.8#53<br/>
Aliases: <br/>
<br/>
Host code.jquery.com not found: 2(SERVFAIL)<br/>
Received 33 bytes from 8.8.8.8#53 in 85 ms
$ host code.jquery.com 8.8.4.4 (этой другой dns сервер гугла)<br/>
$ host code.jquery.com <ip любых других dns>
$ dig code.jquery.com @8.8.8.8<br/>
<br/>
; <<>> DiG 9.6-ESV-R4 <<>> code.jquery.com @8.8.8.8<br/>
;; global options: +cmd<br/>
;; Got answer:<br/>
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 61649<br/>
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0<br/>
<br/>
;; QUESTION SECTION:<br/>
;code.jquery.com. IN A<br/>
<br/>
;; Query time: 8 msec<br/>
;; SERVER: 8.8.8.8#53(8.8.8.8)<br/>
;; WHEN: Tue Oct 4 23:38:38 2011<br/>
;; MSG SIZE rcvd: 33
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