What do you know about A Record And PTR Record in the Dns ?

Simply,,,

"A Record"  used to point DNS name "example: www.xyz.com" to IP address mainly of hosting server "example:52.125.26.35"

PTR Record, is the reverse of "A Record" it points IP address to DNS name.

(A) A-Host Record :  host name to  IP (Internet protocol)

( PTR ) Pointer records are used to map a  IP(Internet protocol) to a host name