alex / alex/what-happens-when

More info about DNS

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描述

You can also give more details about DNS queries that are made:

First are root-servers:

```
. name server a.root-servers.net.
. name server b.root-servers.net.
. name server c.root-servers.net.
. name server d.root-servers.net.
. name server e.root-servers.net.
. name server f.root-servers.net.
. name server g.root-servers.net.
. name server h.root-servers.net.
. name server i.root-servers.net.
. name server j.root-servers.net.
. name server k.root-servers.net.
. name server l.root-servers.net.
. name server m.root-servers.net.
```

...then TLD com:

```
com name server k.gtld-servers.net.
com name server b.gtld-servers.net.
com name server c.gtld-servers.net.
com name server h.gtld-servers.net.
com name server d.gtld-servers.net.
com name server j.gtld-servers.net.
com name server f.gtld-servers.net.
com name server e.gtld-servers.net.
com name server a.gtld-servers.net.
com name server l.gtld-servers.net.
com name server g.gtld-servers.net.
com name server i.gtld-servers.net.
com name server m.gtld-servers.net.
```

...and then Google servers:

```
google.com name server ns1.google.com.
google.com name server ns4.google.com.
google.com name server ns3.google.com.
google.com name server ns2.google.com.
```

...for 'A' record(s):

```
google.com has address 74.125.71.102
google.com has address 74.125.71.101
google.com has address 74.125.71.139
google.com has address 74.125.71.113
google.com has address 74.125.71.100
google.com has address 74.125.71.138
```

(^ robin round dns ^)

...or when IPv6 'AAAA' record(s):

```
google.com has IPv6 address 2a00:1450:400c:c07::65
```

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