Why PTR record is created in DNS?

Related questions

1. How long do DNS TXT records take to propagate?
2. Can you have two A records?
3. What is SRV record in Active Directory?
4. What happens when you flush the DNS?
5. Does DNS flush on reboot?
6. How long can a TXT record be?
7. What are TXT records commonly used for?
8. What is the purpose of reverse DNS?
9. What is a TXT record DNS?
10. What do DNS records do?

Tags

1. #domains
2. #point
3. #record
4. #domain
5. #works
6. #because
7. #opposite
8. #sometimes
9. #while
10. #addresses
11. #reverse
12. #purpose
13. #called
14. #system
15. #associates