What is a DNS Checker? How does it work? What services are there other than OpenDNS? This article will help you find the right option.
Most people don’t understand DNS. They know there is something important about it, but they don’t know what. I don’t blame them; even a lot of techies don’t understand it well. This is a quick guide for normal people.
DNS is the phone book for the Internet. It translates names into numbers. So when you type gmail.com into your browser, your computer looks up the number for Gmail in DNS and then uses that number to send the email to Google’s servers.
DNS is the phonebook of the Internet. When you type a URL in your browser, your computer looks up the corresponding IP number through DNS. The same thing happens when you send an email or connect to a website.
Trouble is, DNS servers are vulnerable to several attacks:
Some malware will infect your computer and change the local DNS settings. This is one reason why it’s important to keep your security software up-to-date.
Your local network can be configured to use a DNS server that gives you inaccurate information about certain websites. For instance, if you search for www.wikipedia.org and the IP address changes to 75.125.45.100, someone has changed your DNS settings (usually at an ISP level). You can compare the IP address in your browser with a public DNS server like Google’s 8.8.8.8 or Level3’s 4.2.2.1 (depending on which one is faster in your area) before accepting response from your local router/ISP DNS server – this way you’ll know if someone is trying to feed you fake information about addresses for certain websites; this may indicate that someone is monitoring (or “spoofing”) what you’re doing online and trying to
There are some powerful tools at your disposal when diagnosing DNS-related issues. The nslookup command can be used to query a DNS server directly, as well as a host computer.
Understanding the results of the nslookup command is key to diagnosing DNS problems.
If your computer is connected to the Internet, you need a domain name system (DNS) server to translate domain names like google.com into IP addresses like 173.194.34.174. Your computer uses DNS to resolve domain names into IP addresses so it can direct requests for web pages and other resources to their proper destination around the Internet.
Troubleshooting a DNS server requires using several different tools, sometimes in concert, to track down why it isn’t working properly.
If there is an error and it is not possible to connect to the server or retrieve the data, you will see a blank page. If you cannot access the page, we recommend that you contact your IT support team for assistance.
Naturally, there are situations when a connection can be created but the data cannot be retrieved. This may happen due to some service provider issues or because of some faults in the program code. In such a situation, you can use the Ping option to check whether the server is unavailable or if there are just some temporary problems.
