DNS NS Record Retrieval

[jamesb63]

Hi

Is there a "PHP" way to get the NS records from a dns zone?

The checkdnsrr() function just tells you whether there are any or not but I need to get the list of the ones that exist.

I have written a class module called "whois" (code freely available by request) which will interrogate whois servers for authority of if a name exists or not, however, if you do:

whois [e-mail]

You get some text inserted by a hacker (read the ones for microsoft.com - quite funny!)

So I need to actually get the authoritive name server records.

I code backtick to the "host" command and interpret the result but there must be a function to get the answer as an array just like getmxrr().

Please please help.

James

[Anon]

One option could be to exec nslookup and then parse the results to find 'nameserver = hostname'.

     nslookup -querytype=ns microsoft.com

Or you could program at the socket level for the protocol to hit the dns server.

First would be a bit easier IMHO. 🙂

[jamesb63]

Chad

Cheers, in the end I did it with:

$tmpName = "host -t ns domain.com";
$tmpArr = split("\n",$tmpName);
$nsresultArr = Array();
if (count($tmpArr) > 0) {
for ($t=0; $t<count($tmpArr); $t++) {
if ($tmpArr[$t]) {
$nstmpArr = split("\ name server\ ",$tmpArr[$t]);
$nsresultArr[] = trim($nstmpArr[1]) . ",";
unset($nstmpArr);
}
}
}

This returns an array $nsresultArr containing a list of authoritive name servers.

This seemed to be the easiest way, this code could probably be optimised a little better but at least it works.

Cheers
James

[chris_sacks]

I am kinda after the same thing, getting all parts of zone file and putting them into arrays,

MX_array()
A_array()
CNAME_array()
NS_array()
SOA_array() - this would need to have individual parts, one for serial number, one for ttl etc

if anyone has ideas, i tried to backtick host -l -t ??? $domain_name and it sorta works...

i just need to know how to take certain parts of this information and store them in arrays!

please help

Chris