Look at Net::DNS. I have also used Email::Valid, which will use either Net::DNS (if installed) or do the nslookup (if Net::DNS isn't installed). The code in both modules maybe an interesting read to you.

Also, 'perldoc -f gethostbyaddr' is good reading.

Cheers,
KM

In reply to Re: A little network question by KM
in thread A little network question by derek3000

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