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2. Domain Name System - Wikipedia

   en.wikipedia.org/wiki/Domain_Name_System

   The Domain Name System ( DNS) is a hierarchical and distributed name service that provides a naming system for computers, services, and other resources in the Internet or other Internet Protocol (IP) networks. It associates various information with domain names (identification strings) assigned to each of the associated entities.

3. Root name server - Wikipedia

   en.wikipedia.org/wiki/Root_name_server

   A root name server is a name server for the root zone of the Domain Name System (DNS) of the Internet. It directly answers requests for records in the root zone and answers other requests by returning a list of the authoritative name servers for the appropriate top-level domain (TLD). The root name servers are a critical part of the Internet ...

4. Internationalized domain name - Wikipedia

   en.wikipedia.org/wiki/Internationalized_domain_name

   Example of Greek IDN with domain name in non-Latin alphabet: ουτοπία.δπθ.gr (Punycode is xn--kxae4bafwg.xn--pxaix.gr)An internationalized domain name (IDN) is an Internet domain name that contains at least one label displayed in software applications, in whole or in part, in non-Latin script or alphabet or in the Latin alphabet-based characters with diacritics or ligatures.

5. nslookup - Wikipedia

   en.wikipedia.org/wiki/Nslookup

   nslookup (from name server lookup) is a network administration command-line tool for querying the Domain Name System (DNS) to obtain the mapping between domain name and IP address, or other DNS records.

6. Reverse DNS lookup - Wikipedia

   en.wikipedia.org/wiki/Reverse_DNS_lookup

   In computer networks, a reverse DNS lookup or reverse DNS resolution (rDNS) is the querying technique of the Domain Name System (DNS) to determine the domain name associated with an IP address – the reverse of the usual "forward" DNS lookup of an IP address from a domain name.

7. DNS zone - Wikipedia

   en.wikipedia.org/wiki/DNS_zone

   DNS zone. A DNS zone is a specific portion of the DNS namespace in the Domain Name System (DNS), which a specific organization or administrator manages. A DNS zone is an administrative space allowing more granular control of the DNS components, such as authoritative nameserver. The DNS is broken up into different zones, distinctly managed areas ...

8. en.wikipedia.org

   en.wikipedia.org/wiki/Convert-domain-to-ip

   en.wikipedia.org

9. Classless Inter-Domain Routing - Wikipedia

   en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

   Classless Inter-Domain Routing ( CIDR / ˈsaɪdər, ˈsɪ -/) is a method for allocating IP addresses for IP routing. The Internet Engineering Task Force introduced CIDR in 1993 to replace the previous classful network addressing architecture on the Internet. Its goal was to slow the growth of routing tables on routers across the Internet, and ...