In the past, when the internet was rare, it was easy to reach to specific IP address by using a particular computer. Even today, by entering the IP address in the browser bar, you can land on the required website. However, today, there are millions of websites on the internet. The human mind easily memorizes simple alphanumeric strings, but computers only understand the numeric language. Here the DNS plays a vital role to route the traffic to the right server.
When you type the website address in the browser bar, your internet service provider (ISP) gets the DNS information related to that website, receives the IP address, and route the user to the correct server. The DNS information about the website is also stored in the browser cache. Therefore, next time, if the person entered the same domain in the browser, the browser does not send a DNS request again; instead fetches DNS record from its cache.
However, what if you change your hosting provider or register a new domain? It will take 24 to 48 hours for the DNS servers to propagate correctly.
Therefore, the hosting provider companies and the ISPs must need to get in contact with the Central Registry for updated DNS information. The Central Registry is like the "Power House" or the "Boss on the Top." That has the data from all the DNS servers around the world.
If your DNS settings are not working correctly, you may be at the risk of cybercrime, security thread, and lagging in performance.
Before going deeper, any further, first, you must know how your DNS query gets resolved?
Suppose you type the URL https://example.com in your web browser's bar.
The browser will check the requested URL's IP address in its cache and if it does not find the IP address. It will send the request to the Name Resolving Server.
You can imagine how vital the DNS Server is for a smooth browsing experience from the above steps.
By default, you automatically connect to the DNS server of your ISP. A slow DNS server is responsible for slow web browsing. If your ISP DNS server is slow, responds slowly, or is overloaded. It will take additional time each time you go on to load a new web page.
Using the default DNS server for query resolution is seems to be a good idea. However, when you find that your default DNS server is causing the problem of slow web browsing. Therefore, waiting for the website to load and interruption during the website browsing are significant concerns.
Therefore, for a smooth browsing experience, selecting which DNS server to use is highly important. You must choose the DNS in terms of speed, filtering system, safety, reliability and durability, and security perspective. You can get the list of best DNS Servers in this perspective from here.
There are various ways you can check which DNS server you are using.
One way is to use some online websites to check your DNS server.
To find the DNS servers used by your PC. Perform the following steps
Note: By using the process mentioned above, you will get the DNS servers' IPs. To get the complete information about the DNS servers, you may also go for the IP Location Lookup to obtain country, state, city, latitude and longitude, and ISP's related data of that IP.