When you make up your mind to build your own brand or project on the internet, a unique domain name becomes your digital “door address”. However, there are several key technical steps between purchasing the domain name and enabling visitors to access your website through a browser: domain name resolution and binding. This process serves as the bridge that connects the “domain name address” you purchased with the “server address” where the content of your website is actually stored, and it is the final step required for your website to be successfully launched online.
This article will provide you with a detailed guide that will walk you through the entire process of domain name resolution and binding, from start to finish, ensuring that your website can serve users smoothly and reliably.
Understanding the core concept: the relationship between domain names and hosts
Before starting any technical operations, it is essential to understand the fundamental difference between domain names and website hosts. This is the basis for avoiding confusion in the future.
Recommended Reading Domain Names Explained: A Complete Guide from Shopping to Management。
What is a domain name?
A domain name, such as “example.com,” is an easy-to-remember and recognizable address for a website. It does not contain any web page data itself; its function is similar to the names of contacts in your address book. Domain names need to be managed through a globally distributed domain name system.
What is a website host?
A website host typically refers to a web server or virtual hosting space, which is the physical location where all the files, code, images, and databases of a website are stored. It has a unique address composed of numbers, known as an IP address.
The role of domain name resolution
Domain name resolution is the process of converting the “domain name” you enter into the corresponding “IP address” of the server. When a user types in your domain name in a browser, the global domain name system performs multiple queries to eventually find the server’s IP address associated with that domain name, thereby directing the user to the correct website. This process is similar to using a “name” to look up the corresponding “phone number” in a telephone book.
Domain Name Purchase and Initial Setup
Before you can successfully resolve a domain name, you need to own a domain name and complete its basic configuration.
Select and purchase a domain name.
You need to purchase the domain name you desire from a domain name registrar. When making the purchase, pay attention to the availability of the domain name, its price, the length of the registration period, as well as whether the registrar provides a user-friendly management interface and whether the DNS resolution service is stable and fast. Once the purchase is complete, you will gain control over the management of that domain name.
Recommended Reading Domain Name Resolution, Binding and Management: A Comprehensive Technical Guide from Basics to Mastery。
Set up a domain name server
A domain name server is a public server responsible for managing all the resolution records associated with your domain name. Registrars usually provide default domain name servers. You need to decide whether to use the free service offered by the registrar or a more professional third-party service. The address of a domain name server typically appears in the format “ns1.xxx.com”. In the domain name management interface, look for the “DNS Management” or “Domain Name Server Settings” option to confirm or modify this setting.
Access the server and retrieve the binding information.
From your website hosting provider, you will obtain the necessary information to point your domain name to your server. For virtual hosting, you will typically be provided with one or more server IP addresses, or a CNAME alias record. For cloud servers, you need to know their public IP address. Make sure to obtain this information accurately from the hosting provider’s administration panel.
Configuring domain name resolution records
This is the most critical technical step in the entire process. You need to add records in the “DNS Resolution Management” or “Zone File Management” section of the domain name management panel. The common types of records include the following:
A record: Points to an IP address.
The A record is the most commonly used type of record, as it directly maps a domain name to an IPv4 address. For example, you can point both “yourdomain.com” and “www.yourdomain.com” to your server’s IP address. Typically, you need to add two A records: one with the host name “@” to represent the root domain name, and another with the host name “www” to represent domain names with the “www” prefix.
CNAME record: Points to another domain name.
A CNAME (Canonical Name) record, also known as an alias record, allows you to point one domain name to another domain name, rather than to an IP address. This is particularly useful when you are using third-party hosting services. For example, you can set “www.yourdomain.com” as a CNAME record that points to the domain name provided by your hosting provider.
MX Record: Used for the sending and receiving of emails.
If your company's email service is separate from the website hosting, you need to configure MX records to specify the server address for receiving emails. When setting up MX records, pay attention to the priority; the smaller the value, the higher the priority.
Recommended Reading Domain Name Resolution and Configuration in Detail: The Critical Management of Addresses for Websites and Network Services。
TXT logs and other records
TXT records are commonly used for domain name ownership verification and setting up anti-spam email policies. Depending on your specific needs, you may also need to configure other types of records.
Verification of Configuration and Troubleshooting
After adding all the resolution records, you need to wait for the global DNS system to update. This process is called “DNS propagation” and typically takes from a few minutes to several hours. During this period and thereafter, you will need to perform verification and any necessary troubleshooting.
Use an online tool to verify the parsing.
There are many free online DNS query tools available. You can use these tools to enter your domain name and check whether the returned IP address matches the IP address of the server you have set up. This will help you confirm whether your DNS resolution records have been successfully created and propagated.
Common reasons why a website is inaccessible:
If the website is still inaccessible after the parsing takes effect, please troubleshoot in the following order: Confirm that the website program on the server has been correctly deployed and is accessible; Check whether the server firewall has opened ports 80 (HTTP) or 443 (HTTPS); Ensure that your website is configured with the correct virtual host binding; Check whether the domain name has been “added” or “bound” in the server control panel.
Make sure that the domain name has been registered and filed with the relevant authorities.
If your server is located in the Chinese mainland, domain name registration is a mandatory requirement. Even if a domain name is resolved correctly, access to it will be blocked by the service provider if it has not been registered. Please make sure to complete the registration process in advance.
summarize
From purchasing a domain name to launching a website, domain name resolution and binding are crucial steps that you must master. The entire process can be summarized as follows: purchase a domain name > obtain server connection information > add the correct resolution records in the domain name management backend > wait patiently for DNS propagation > finally verify and successfully access the website. Understanding the principles behind each step can help you deal with various potential issues more confidently and ensure that your digital signage accurately directs visitors to your website homepage.
FAQ Frequently Asked Questions
How long does it take for a domain name resolution to take effect?
Theoretically, the TTL (Time To Live) value determines the duration for which a record is cached before it needs to be rechecked. However, a complete refresh of the global DNS system typically takes 24 to 48 hours. For newly added or modified records, they become effective within a few minutes to a few hours in most regions. Using DNS query tools from different locations can help you monitor the progress of the propagation.
Why is it that even though I have modified Record A, the website still displays the old content when I visit it?
This is usually not a parsing issue, but rather a problem with the browser or the local network cache. Please try clearing the browser cache, or press Ctrl+F5 in the browser to force a refresh. If the problem persists, you can try changing the network environment or access the website using the browser’s “incognito mode.”
Can a domain name be resolved to multiple servers at the same time?
Sure, it can be achieved mainly through record A. You can set multiple IP addresses for a host record (such as @), a process known as “load balancing” or “round-robin resolution.” When a user makes a request, the DNS system will return one of the IP addresses, allowing traffic to be evenly distributed across multiple servers. However, more advanced load balancing solutions often require the use of hardware or cloud services.
Which is better, a CNAME record or an A record?
It depends on your specific use case. An A record directly maps a domain name to an IP address, resulting in a shorter resolution path and, theoretically, faster performance. However, if the IP address changes, you need to manually update all the A records. A CNAME record points to another domain name; when the IP address associated with that target domain name changes, you don’t have to modify the CNAME record itself, making it more flexible to manage, especially in scenarios where you are using CDN (Content Delivery Network) or cloud services. However, it’s important to note that CNAME records generally cannot be set for root domain names.
The domain name resolution is set correctly, but the message “Website not registered with the authorities” appears. What should I do?
This indicates that your website server is located within the Chinese mainland, but the domain name has not yet been registered with the Ministry of Industry and Information Technology (MIIT). You must immediately contact your server provider and follow their instructions to submit a registration application. Until the registration number is obtained, the service provider is legally required to block access to the domain name.
What's next, what's next?
Extended reading and practical knowledge
The following are related to the topic of this article and are suitable for further in-depth reading. Prioritize starting with the article that is closest to your current problem, and gradually expanding to surrounding topics usually works better.
- Starting from scratch: A step-by-step guide on how to efficiently apply for and configure a personal website domain name
- What is a domain name? A comprehensive guide for beginners to experts, from registration to resolution.
- A detailed explanation of the entire domain name resolution process: from entering a website address to the behind-the-scenes journey of loading the web page
- What is a domain name? A comprehensive explanation of its definition, types, and common questions.
- Domain Name Resolution and DNS Configuration: A Comprehensive Guide from Beginner to Expert
English