I am getting ready to relocate data centers, and am trying to compile a list of DNS changes that will be needed. I have a spreadsheet of hundreds of domain names that are owned by my company, and hosted at the old data center. I'm looking for a tool that would allow me to lookup the nameservers and IP for each of the domains, and generate a list. I've looked at Sam Spade - but it looks like it needs custom scripts for bulk lookup, and the site with the documentation seems to be down. What I need to end up with is a text file or spreadsheet showing, domain, nameservers, and IP if possible.
Any suggestions would be greatly appreciated.