What are NS records used for?

Related questions

1. What is my MX?
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5. What are DNS TXT records used for?
6. Why do we need ARP?
7. What are MX records used for?
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10. What is an MX number?

Tags

1. #which
2. #record
3. #server
4. #records
5. #servers
6. #primary
7. #indicate
8. #stands
9. #multiple
10. #backup
11. #domain
12. #authoritative
13. #often
14. #indicates
15. #contains
16. #actual