IT Blogs by Senthilkumar

  Below table explains us different IPv6 address blocks being used and its purpose  

In the Second Part of DNS series we would be looking into reverse Lookup,  Reverse DNS as the name suggests is the process of using the DNS  to translate IP addresses to hostnames. Reverse DNS is the opposite of forward lookup, which is used to translate human readable hostnames to IP addresses. In the case of reverse DNS, the query is similar to forward lookup it travels from the root DNS to the DNS servers of the Regional Internet Registry (RIR), which contains the authoritative information for the RIR-delegated IP block, for example for any query to ip from IP block 202.0.0.0/8  will travel from root to the respective RIR's DNS server then based on the subnet delegation and the authoritative DNS server registered with the RIR for the queried subnet ip it will forward the query to the respective authoritative DNS server. How this is done? For all the IP addresses  allocated by Internet Assigned Numbers Authority (IANA) to RIR, RIR also delegates corresponding rever...