A Pointer (PTR) document is a sort of Area Title System (DNS) document used to map an IPv6 deal with to a completely certified area title (FQDN). PTR data are sometimes used to carry out reverse DNS lookups, which might be helpful for troubleshooting community points or figuring out the hostname of a server.
PTR data are vital as a result of they permit directors to simply map IPv6 addresses to FQDNs, which may make it simpler to determine and handle community gadgets. Moreover, PTR data can be utilized to enhance the accuracy of reverse DNS lookups, which will help to enhance the general efficiency of a community.