Finding Name Server Names

I may want to give up/abandon a Domain Name that has old Nameserver names assigned to it.
How can I start with that domain (example.com) and find out:
1) What name servers EXIST (ns1.example.com etc)
2) Of these name servers, which ones are in use ... meaning, I want to know if I delete all name servers for this domain, and even give up the domain, what Websites might stop working
Any Mac, Linux, or online/server-side solution would be wonderful, though if you only have a Windows solution, I am sure I could find a Windows PC around here somewhere

Thx in advance all!

- B
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bleggeeAsked:
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nociSoftware EngineerCommented:
dig ns example.com

will tell you which are the current nameservers.
(when in doubt use dig +trace ns example.com that should show all DNS involved...)
dig soa example.com
should give the master nameserver after the the SOA name.
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Wayne88Commented:
"What name servers EXIST (ns1.example.com etc)"

If you logon to where your domain is hosted (godaddy for example) you will see the name servers listed on it.

"Of these name servers, which ones are in use ... meaning, I want to know if I delete all name servers for this domain, and even give up the domain, what Websites might stop working"

This depends on the records in the DNS zone file and where it's pointed.  If any services depended on the name server listed then those are the ones that will be affected.  If you give up the domain name then anything associated with that domain name reference will be up for grab (e.g. email - mail@mypage.com, webpage - www.mypage.com, etc.)

Not sure how comfortable you are working with DNS zone file and may be best to reach out to the company that's hosting your domain name and have their tech support help you out to be safe.
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