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dig is a network administration command-line tool for querying the Domain Name System (DNS).. dig is useful for network troubleshooting and for educational purposes. [2] It can operate based on command line option and flag arguments, or in batch mode by reading requests from an operating system file.
nslookup operates in interactive or non-interactive mode. When used interactively by invoking it without arguments or when the first argument is - (minus sign) and the second argument is a hostname or Internet address of a name server, the user issues parameter configurations or requests when presented with the nslookup prompt (>).
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 ...
This list of Internet top-level domains (TLD) contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet.A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database. [1]
In Windows Vista (and Windows Server 2008) Microsoft moved the registration functionality from the DHCP Client service to the DNS Client service. Servers running Microsoft Windows also attempt to register other information, in addition to their names and IP addresses, such as the locations of the LDAP and Kerberos services that they provide.
For example, to do a reverse lookup of the IP address 8.8.4.4 the PTR record for the domain name 4.4.8.8.in-addr.arpa would be looked up, and found to point to dns.google. If the A record for dns.google in turn pointed back to 8.8.4.4 then it would be said to be forward-confirmed .
The file resolv.conf typically contains search directives that specify the default search domains used for completing a given query name to a fully qualified domain name when no domain suffix is supplied. For instance, search example.com local.test configures the resolver to try additionally somehost.example.com and somehost.local.test.
Windows Internet Name Service (WINS) is a Microsoft name resolution service, introduced in 1994 with Windows NT 3.5, for translating NetBIOS names to IP addresses. NetBIOS names are an older naming convention used for local name resolution before DNS became ubiquitous. WINS is mostly unnecessary for modern networks unless legacy systems require it.