Resolving Mass IPs

[zpb0103]

I have a large list of IPs that I need to lookup and get the resolved hostname for, its from an .htaccess file thats become outdated with time. As an example, one of them is 67.16.94.2 which returns smtp.gigablast.com .

Is there a quicker / easier way to resolve the ip to hostname rather than my current method? Right now its either manually entering each one in dnsstuff.com or using dig -x ip and theres several thousand to go. Thanks

[LSalab]

Well, if you have a file with all the addresses in each line, you could run a little loop to seek each address:

cat youriplist.txt | while read IP ; do nslookup $IP ; done

[zpb0103]

Thank you, thatll work great for what I need.