DNS servers play a fundamental role in Internet browsing, and have an important influence on the speed and performance of your access to the network. The use of some or other servers, their modification, or the dangers of using the wrong DNS servers are some of the aspects you should know about. In fact, DNS servers are one of the fundamental pieces in the chain that is carried out when we make a web request to any of the portals we visit. Here we explain everything you need to know about DNS.
WHAT ARE DNS SERVERS?
The first thing you should know is that DNS servers are computers with huge databases, which have registered the relationship between a domain and the IP address that corresponds to it. Thus, although we identify the Internet web pages by the domain name, the DNS servers are those that have the IP address associated with the name, and those that carry the necessary translation in order for us to navigate. The operation is basic, as they serve as a link to the portals that using a numeric format, the IP address. Therefore, we can understand it as a telephone numbering where the DNS servers are, according to this explanation, huge telephone directories that make the change of 'contact name' to 'phone number' that you have associated.
WHAT ARE DNS SERVERS USED FOR?
DNS servers have several possible ways of using them, in terms of their possible applications within the Internet. The most used is the resolution of domain names for the response, to the client, with the IP address that corresponds to the web portal by its domain. However, they can also resolve the addresses in reverse, returning the domain name that corresponds to a specific IP address. And the last possible application is the resolution of mail servers, which consists in obtaining the mail delivery server given a domain name. In addition to the host IP address relationship, the DNS servers store owner information, creation and expiration date and other registration data, which are known as DNS Record.
According to the model of direct connection to Internet, in your web browser you write a URL with the domain name. For example, http://www.sitioweb.com, and accessed without intermediaries as long as there is a copy of the website in the local cache, or in the server cache. Now, there is a second way that consists of the request to a DNS server, which is an indirect connection in which the 'client' requests the DNS server configured in the connection the resolution of the domain name to obtain the IP address. Obtained the IP address, we can already access the web page in a process that takes place without the user seeing anything, but the results.
WHY DO THEY AFFECT THE PERFORMANCE AND SPEED OF MY INTERNET?
As long as the connection is direct, because we have already accessed the web and the query is carried out on a cached copy, the servers will not affect the performance of our Internet connection and the browsing experience. However, when a query is made to a DNS server the connection is indirect, and then the fall or saturation of servers can affect us, as well as their performance by location, capabilities and extension of their databases. DNS servers are based on UDP, and then we have no guarantees that they receive our requests when the network is saturated. Thus, the use of more capable DNS servers represents a potential improvement of the performance of our connection at 40% speed.
FACTORS AFFECTING THE PERFORMANCE OF DNS SERVERS
- Processing speed.
- Capacity to solve requests.
- Geographic location.
- Entries in the databases.
WHAT DNS SERVERS SHOULD I USE?
According to the data that we just gave you, the DNS changes to performance level every so often. According to the database is a fundamental factor, but we must also consider the congestion and traffic, which can alter their performance. Of course, another invariable factor is the location of the DNS servers. However, there is no reliable advice in this regard, but examine its performance in real time, and do it again as long as we want to change the DNS servers for better performance.
EVALUATING THE PERFORMANCE OF DNS SERVERS
To evaluate the performance of DNS servers, the DNS Jumper tool is your best ally, since we can benchmark performance and know which are the ones that will most benefit our browsing and Internet connection at a given time, and so many as many times as we need. Now, the truth is that there is a specific list of DNS servers that are known for excellent performance and performance.
1. Google DNS
Google's DNS servers are probably the most used by users who have modified the default configuration provided by the operator. They support a huge traffic and take care of the privacy of users by storing, only temporarily, anonymous browsing data to avoid possible frauds and abuses on the Net.
2. Open DNS
The performance of these DNS servers is also very remarkable, and they are the ideal option when we want to go a step further by configuring parameters such as access filters and parental controls. Therefore, they suppose a greater security when the computer of access has to be limited in certain way.
3. Free DNS
Also with a very good performance, this third option that we have selected stands out for the care over the privacy of the traffic that they manage and the consultations, since they do not register the activity of their clients in any case.
DISCOVER WHAT DNS SERVERS YOU ARE USING AND HOW TO CHANGE THEM
There are many ways to analyze the properties of your Internet connection to know what DNS servers you have configure, and some are faster than others. On the other hand, we can also do the query manually.
Check your DNS servers manually
- Control panel> Network center.
- Change adapter settings.
- Right click on the Network> Properties.
- Internet Protocol version 4 TCP / IPv4
- Change the DNS servers of your Internet connection
Right in the section that we just referred to is where we can modify the DNS configuration of our network connection. Now, if we have not evaluated before the performance of the different possibilities, it is best that we do it with DNS Jumper and, directly from this application, we can select the option that modifies our configuration without having to touch any parameter manually.