Windows dns lookup command

The following sections present the most common uses of the command. Note: The authoritative answer in the output of the nslookup refers to the answer provided by one of the nameservers belonging to the domain being searched. The non-authoritative answer is provided by a nameserver not associated with the specific domain, e.

Name Server NS records store names of the domain's name servers. To see a domain's NS records, type:. MX records store all relevant Mail Exchange server data.

This information is used to route all email requests for the domain to the appropriate mail server. While nslookup provides information about a domain name, it can also be used to look for the domain name associated with an IP address. Perform a reverse DNS lookup using the following syntax:. Start of Authority SOA records provide authoritative information about the domain and the server, such as the email address of the administrator, serial number, refresh interval, query expiration time, etc.

TXT records contain important information for users outside of the domain. View a domain's TXT information by running the following nslookup command:. See the name, IPv4 and IPv6 information of a specific name server on a domain by using the following syntax:. Pointer records are used for reverse DNS lookups to confirm that the IP address belongs to a specific domain name. When using the ptr option, type the IP address in reverse, i. DNS servers use port 53 to communicate.

When you run into Internet connectivity issues, flushing or clearing the DNS cache usually resolves the problem. DNS cache ensures quick access to websites, and when you clear it, the first time you visit a website, it may take longer than usual to load. But afterward, the results will be quicker again. If the issue is on the server instead of the local machine, you can still use Command Prompt to clear the DNS cache, but with a different command. In that case, the command would be:. Depending on the type of cache you want to clear, you have a few options to implement:.

Keep in mind that disabling this service will affect the overall performance of your computer and the network traffic for DNS queries will increase, which means websites will load much slower than normal. All you have to do is visit the site once, and upon subsequent requests, your browser or operating system will use the cached DNS details to return requests much quicker.

These details include activity history, login details, profile data, and traces of visits to adult websites.

To effectively remove such sensitive data and protect your privacy, you need a reliable program like Auslogics BoostSpeed. BoostSpeed comes with all the tools you might need to keep your PC performing at optimal speeds as well as privacy protection. Apart from clearing traces of your activities in your web browsers, system files, and applications, there is also an option to protect your DNS from unauthorized changes.

If you enable Active Browser AntiTracker, your browsing data will be cleared after every browsing session, further safeguarding your privacy. We recommend cleaning up your PC regularly, depending on your usage. If you omit both parameters, the tool uses the default DNS name server. While using the interactive mode, you can:.

An unrecognized command is interpreted as a computer name. If computerTofind is a name and doesn't have a trailing period, the default DNS domain name is appended to the name. This behavior depends on the state of the following set subcommands: domain , srchlist , defname , and search. If you type a hyphen - instead of computerTofind , the command prompt changes to nslookup interactive mode.

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