Question: How do I test or check reverse DNS for given IP address under Linux or Windows XP/Server 2003?
Answer: Reverse DNS lookup (also known as rDNS) is a process to determine the [gs hostname] associated with a given IP address.
Typically, the DNS is used to determine what IP address is associated with a given hostname; so to reverse resolve a known IP address is to lookup what the associated hostname for it. A reverse lookup is often referred to simply as reverse resolving, or more specifically reverse DNS lookups.
The most common uses of the reverse DNS are:
You can use standard UNIX / Linux utilities such as nslookup, dig or hosts to find out reverse DNS of a given IP address.
Task: Find Reverse DNS for IP 75.126.43.235 under Linux/UNIX
$ host 75.126.43.235
Output:
235.43.126.75.in-addr.arpa domain name pointer cyberciti.org.
IP 75.126.43.235 is reverse mapped to cyberciti.org.
Task: Find Reverse DNS for IP 75.126.43.235 under Linux/UNIX/Windows
nslookup works under Windows and UNIX like oses:
nslookup 75.126.43.235
Output:
Server: 208.67.222.222
Address: 208.67.222.222#53
Non-authoritative answer:
235.43.126.75.in-addr.arpa name = cyberciti.org.
Authoritative answers can be found from:
SOURCE | LINK | LANGUAGE | ENGLISH |
Hey dude, did you know? How to test or check reverse DNS (Linux and Windows) – http://heelpbook.altervista.org/?p=35319 (Visit us on http://www.heelpbook.net) – Enjoy!
How to test or check reverse DNS (Linux and Windows) – HeelpBook – http://heelpbook.altervista.org/?p=35319 – 04/01/2013 – 16:00 #HeelpBook @HeelpBook