To provide this service, DNS creates a mapping between the numeric IP addresses and the human-readable domain names that Internet users are accustomed to using and can remember more easily.As you know, hosts connected to the Internet are each assigned a unique 32-bit IP address, usually expressed in a dotted decimal notation of four 8-bit numbers, such as 127.0.1.25.
Just as you shouldn't expect that the phone number (212) 555-1234 will lead to the same place as(425) 555-1234, you should not expect that the URLs You shouldn't even expect that and fire.light.will be the same machine—just as you wouldn't expect the telephone numbers (710) 555-1234 and (800) 707-1234 to ring on the same phone.
There are billions of pieces of information spread out in tens of millions of domains, all stored in thousands, if not millions of DNS servers worldwide, and all of this information is stored in zone files.
Enter the zone name and IP address of the primary server when prompted.
Note that if the primary server is not set up to accept zone transfers from this server or if the zone transfer traffic (TCP port 53) is blocked by network filters or firewalls, your server may not be able to successfully provide authoritative DNS service for the configured zone.
If the servers don't list my server as a name server for the domain, then no hosts on the Internet will know to ask my server for information about
Any time you register a new domain, or move a domain's name servers from one set of hosts to another, you have to work with your domain name registrar to make sure that DNS servers on the Internet will know to ask your DNS server for information about your domain.
DNS is one of the services responsible for directing network traffic based on name and numerical IP addresses.
Specifically, it's the service that allows users to type in names instead of numbers to locate a Web site or Internet resource.
While the directives are optional, the resource records are required in order to provide name service to a zone.