![]() ![]() ![]() Most people know the basic nslookup command for checking a host name’s IP or IP’s hostname but not many know to use all the other cool features like specifying the DNS server to use or choosing what type of record to query for a given IP and so on. Using Nslookup we can quickly gather a variety of information about DNS. When DNS doesn’t work right, things on your network can fail to communicate. At that point routing takes over and directs the packets from your computer to the destination. When you type into your address bar your computer queries your local DNS server which queries a public DNS server to figure out what IP address has. ![]() In a nutshell, DNS helps computers on a network communicate by translating domain names to IP addressees which are used in routing. In most of the environments I’ve worked in, it’s usually the SysAdmins that manage DNS or a dedicated DNS group in very large enterprises since DNS is a server role, yet it’s affect on network communications is pretty substantial and many a network admin will find themselves doing DNS lookups while troubleshooting. Importance of DNSĭNS is such a foundational aspect of how networks and the internet work that it’s hard to categorize it as either more sysadmin or more networking related. However, that’s barely scratching the surface of what you can accomplish with nslookup. To use nslookup you simply enter ‘nslookup’ in a command prompt window followed by the desired hostname, ip address, or record name that you wish to query. Nslookup (short for name server lookup) is an excellent network admin command-line tool for querying DNS (domain name systems) to find the associations between domain names and IP addresses, and other DNS records. ![]()
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