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2. .invalid - Wikipedia

   en.wikipedia.org/wiki/.invalid

   In 1999, the Internet Engineering Task Force reserved the DNS labels example, invalid, localhost, and test so that they may not be installed into the root zone of the Domain Name System. The reasons for reservation of these top-level domain names is to reduce the likelihood of conflict and confusion. [1]

3. WHOIS - Wikipedia

   en.wikipedia.org/wiki/WHOIS

   Currently, the Internet Corporation for Assigned Names and Numbers broadly requires that the mailing address, phone number and e-mail address of those owning or administering a domain name to be made publicly available through the "WHOIS" directories. The registrant's (domain owner's) contact details, such as address and telephone number, are ...

4. Wildcard DNS record - Wikipedia

   en.wikipedia.org/wiki/Wildcard_DNS_record

   A wildcard DNS record is a record in a DNS zone that will match requests for non-existent domain names. A wildcard DNS record is specified by using a * as the leftmost label (part) of a domain name, e.g. *.example.com. The exact rules for when a wildcard will match are specified in RFC 1034, but the rules are neither intuitive nor clearly ...

5. 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. [1]

6. Controversies surrounding GoDaddy - Wikipedia

   en.wikipedia.org/wiki/Controversies_surrounding...

   The editor on Domain Name Wire received a message from a reader who is trying to acquire a domain with obviously false WHOIS information. [8] The message from GoDaddy said, "The domain has been suspended due to invalid WHOIS. The domain will remain in suspension through expiration, including the registry's redemption period, unless the owner ...

7. Telephone number mapping - Wikipedia

   en.wikipedia.org/wiki/Telephone_number_mapping

   Telephone number mapping is a system of unifying the international telephone number system of the public switched telephone network with the Internet addressing and identification name spaces. Internationally, telephone numbers are systematically organized by the E.164 standard, while the Internet uses the Domain Name System (DNS) for linking ...

8. .localhost - Wikipedia

   en.wikipedia.org/wiki/.localhost

   The name localhost is a commonly defined hostname for the loopback interface in most TCP/IP systems, resolving to the IP addresses 127.0.0.1 in IPv4 and ::1 for IPv6.As a top-level domain, the name has traditionally been defined statically in host DNS implementations with address records (A and AAAA) pointing to the same loopback addresses.

9. Hostname - Wikipedia

   en.wikipedia.org/wiki/Hostname

   If the domain name is completely specified, including a top-level domain of the Internet, then the hostname is said to be a fully qualified domain name (FQDN). Hostnames that include DNS domains are often stored in the Domain Name System together with the IP addresses of the host they represent for the purpose of mapping the hostname to an ...