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How to query DNS information after using a proxy
by lina
2024-01-30

In modern Internet use, the application of proxy servers is very common. It can help users hide their real IP addresses when accessing the Internet, improve network access speed, and break through access restrictions on specific websites. 


However, in the process of using a proxy server, sometimes we need to query DNS information. So, how to query DNS information in a proxy environment? This article explains this process in detail.


1. Understand the relationship between DNS and proxy


DNS, or Domain Name System, is a core service of the Internet. It is responsible for converting domain names that are easy for people to remember (such as www.example.com) into IP addresses that computers can understand. The proxy server is located between the user and the target server, responsible for forwarding requests and responses.


When using a proxy, the user's request first reaches the proxy server, and then the proxy server forwards the request to the target server. Therefore, the proxy settings may affect the DNS resolution process.


2. The impact of proxies on DNS queries


In the case of using a proxy, DNS queries may be affected by:


Proxy servers may interfere with the DNS query process. Some proxy servers will modify or intercept DNS query requests, causing users to be unable to obtain correct DNS resolution results.


Proxy servers may affect DNS query speed. Due to the presence of proxies, DNS queries need to go through additional relays, which may cause query speeds to be slower.


The geographical location of the proxy server may also affect DNS query results. Proxy servers in different regions may use different DNS servers, which may cause the same domain name to resolve to different IP addresses in proxy environments in different regions.


3. How to query DNS information in a proxy environment


In a proxy environment, we can query DNS information using the following methods:


Use command line tools


In Windows systems, we can open Command Prompt and enter the following command to view the current DNS settings:


bash

ipconfig /all

In the displayed information, find the "DNS Servers" column, which will list the DNS server addresses used by the current computer.


For Mac users, you can use the Terminal application and enter the following command to view the DNS settings:


bash

networksetup -getdnsservers Wi-Fi


Use network diagnostic tools


In addition to command line tools, we can also use some network diagnostic tools to view DNS information. For example, in Windows systems, we can use the "Network Diagnosis and Repair" function:


a. Search for "Network Diagnosis and Repair" in the Start menu and turn on this feature.

b. In the Diagnosis and Repair window, select the Advanced tab.

c. Click the "Settings" button to enter the network setting interface.

d. In the network settings interface, find the "DNS" tab. The DNS server address used by the current computer will be displayed here.


Use third-party tools


In addition to the tools that come with the system, there are also some third-party tools that can help us view DNS information. For example, tools such as "DNS-Shotgun" and "Advanced IP Scanner" can provide DNS setting information of the current computer. The use of these tools is relatively simple. Generally, you only need to run the program to view relevant information.


4. Choose a reliable proxy to query DNS information


In order to ensure that DNS information can be correctly queried in a proxy environment, it is crucial to choose a reliable proxy server. Here are some suggestions for choosing a reliable agent:


Choose a well-known brand: Choose a proxy server provider from a well-known brand, such as ExpressVPN, NordVPN, etc. These providers usually have a good reputation and a wide range of application scenarios. 


Their servers are located all over the world and can provide more reliable DNS query services. At the same time, well-known brands usually pay more attention to user privacy protection and security issues, allowing users to use their services with greater confidence.


Check user reviews: When choosing a proxy server provider, it is very important to check the reviews of other users. By checking user reviews, you can learn about the provider's performance in terms of service quality, stability, and security. 


Choosing a proxy server from that provider is generally more reliable if the majority of users have positive reviews for that provider.


Test proxy speed: When choosing a proxy server provider, it is also very important to test its proxy speed. By testing the speed of different servers in different regions, you can find the fastest and most stable proxy server. This is especially important for users who need to quickly query DNS information. You can choose from multiple providers' free trial services for testing and comparison.


It is recommended to use lunaproxy here, which provides 200 million proxy resources covering 195+ regions around the world. It is one of the most reliable proxy service providers.


5. Precautions


When using the above method to query DNS information, you need to pay attention to the following points:


Confirm that the proxy settings are correct. When using command line tools or network diagnostic tools, you need to ensure that the proxy settings are correct so that correct DNS information can be obtained. If the proxy settings are incorrect, the query results may be inaccurate or the relevant information cannot be retrieved.


Pay attention to privacy protection. When using third-party tools to query DNS information, you need to pay attention to protecting personal privacy. Avoid using untrusted third-party tools to avoid personal information leakage or computer security risks.


Pay attention to network security. When querying DNS information, you need to pay attention to network security issues. Pay attention to preventing security risks such as malware and phishing attacks to ensure that your computer runs safely and stably.




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