A reverse DNS (domain name server) search is comparable to a reverse phone search in that it was made to uncover information linked to several numbers. Yet, unlike a reverse phone lookup that searches a telephone number, a DNS lookup that is reveres runs a search using an IP address.
An IP (internet protocol) address is a computer's numeric address (I.E. 188.8.131.52) that's converted into a domain name (I.E. Google.com) by a domain name server. Every server which is connected to the internet is provided an original IP address. Thus, domain name servers are queried by a reverse DNS search in an effort to find a match.
Exactly why is a reverse DNS search used? An IP & DNS Report may be used for several reasons, but the most frequent reasons are:
o Network troubleshooting assistance - Reverse DNS search was quite useful for SMTP email, and website tools used to monitor users, for example, in case of internet forums. Basically, inverse domain name searches provided assistance in the exact same way that pinging and tracerouting is in regards to network support helpful.
o Antispam - This service is usually utilized by people to check up on the domain name of a particular sender of junk e-mails, to ensure it could be ascertained whether the spammer is probably connected to dialup customers, home based broadband customers, or in the event the person has dynamically assigned addresses. Many, although not all, junk e-mails start off from servers that have lost "genus" inverse domain name server lookup names.