In the internet world, your website needs an address, just as a physical store needs a street number. The technical term for this address is a “domain name.” But simply purchasing a domain name is not enough for your website to be accessible. The domain name must correctly point to the server where your website files are stored, and this process involves “resolution” and “binding.” This guide will systematically lead you through every step, from coming up with a domain name to successfully launching your website.
Domain name registration and purchase
This is the first step of your online identity. Choosing a good domain name is crucial; it is not only the point of access, but also matters for your brand image and SEO.
How to choose a good domain name
A good domain name usually has the following characteristics: it is short and easy to remember, highly relevant to the brand or business, and easy to spell and pronounce. Try to avoid using hyphens, numbers, or character combinations that are easily confused. Give priority to mainstream top-level domains such as `.com`, `.cn`, and `.net`, as they have the highest recognition. Before deciding on a domain name, be sure to check its availability through the search tool of a domain registrar.
Recommended Reading A comprehensive guide to domain name resolution, management, and registration: from beginners to experts。
Choosing a reliable domain name registrar
A domain registrar is an authorized organization that grants the right to use a domain name. Well-known registrars at home and abroad include Alibaba Cloud HiChina, Tencent Cloud DNSPod, GoDaddy, and Namecheap. When choosing one, you should consider pricing transparency, the ease of use of the management dashboard, the quality of customer support, and the convenience of transferring the domain later. It is recommended to prioritize comprehensive cloud service providers that also offer hosting services, so that unified management can be carried out later.
Complete the purchase and real-name authentication
After selecting a domain name and adding it to the cart, you usually need to register an account and complete the purchase process. Depending on the requirements of the top-level domain you choose, especially China’s country-code top-level domain .cn or a domain resolved within mainland China, real-name verification is required. You need to follow the registrar’s instructions and submit personal or business identification documents for review. The domain can only be used and resolved normally after the review is approved.
Understanding the core concepts of DNS resolution
Before pointing a domain name to a server, understanding a few core DNS record types is key to success. DNS is like a global phone book, translating domain names into IP addresses that servers can understand.
A record and an AAAA record
An A record is the most basic record type, used to point a domain name to an IPv4 address. For example, point `www.yourdomain.com` to `192.0.2.1`. As the internet has evolved, IPv4 addresses have become exhausted, and IPv6 has begun to gain widespread adoption. An AAAA record serves a similar purpose to an A record, but it points to an IPv6 address. If your server supports IPv6, it is recommended to add both A and AAAA records for better compatibility.
CNAME Record (Alias Record)
A CNAME record points one domain name alias to another domain name, rather than to an IP address. It is commonly used to point a subdomain to the primary domain, or to delegate a service to a third party (such as a CDN, object storage, etc.). For example, you can set `cdn.yourdomain.com` as a CNAME for `yourdomain.cdnprovider.com`. This way, when the CDN provider's address changes, you only need to update their record, without having to modify your own CNAME record.
Recommended Reading A comprehensive guide to domain names: best practices for registration, resolution, and management, as well as security measures。
\nMX records and TXT records
MX records are used specifically for email services and specify the mail server addresses that receive email for the domain. TXT records are text records commonly used to verify domain ownership, such as in Google Search Console or email setup, and to configure email sending policies to help prevent spam.
Configure domain DNS to the server
After purchasing a domain name and understanding DNS records, the next step is to configure it in your domain registrar’s or a specialized DNS provider’s dashboard, pointing the domain name to your website hosting server.
Recommended Reading A Complete Analysis of Domain Name Basics and Advanced Knowledge: From Concepts to Practical Guide。
Get server IP address or alias
If you are using virtual hosting or a cloud server, your service provider will provide you with one or more IP addresses (IPv4 and/or IPv6). If you are using cloud hosting, Serverless, or Platform as a Service, a CNAME alias address is usually provided, such as `xxx.region.rds.aliyuncs.com`. Be sure to obtain accurate information from your hosting service provider.
Log in to the DNS management panel
Log in to the registrar account where you purchased the domain name, find the “Domain Management” or “My Domains” list, and enter the “DNS Management,” “DNS Settings,” or similar functional module for the target domain name. Some users may choose to use a third-party professional DNS service such as Cloudflare. In this case, you need to point the domain name's NS records to Cloudflare's servers and then manage it in the Cloudflare dashboard.
Add DNS record
These are the core operating steps. Usually, you need to add the following records:
1. @ record (root domain record): Add an A record, set the host record to `@`, and set the record value to your server’s primary IP address. This is used to access `yourdomain.com`.
2. www record: You can choose to add another A record pointing to the same IP (enter `www` in the host record field), or, more commonly, add a CNAME record to alias `www.yourdomain.com` to `yourdomain.com`.
3. Other subdomains: As needed, add the corresponding A records or CNAME records for subdomains such as `blog`, `shop`, and `api`.
After adding it, save the settings. It usually takes some time for DNS resolution to take effect globally (known as TTL, time cache), as fast as a few minutes or as slow as 24–48 hours.
Bind domain to server
Domain name resolution is “giving directions,” telling visitors where to find your website. Server binding is “claiming ownership,” telling the server which website's content it should provide when someone visits through a specific domain name. Both are indispensable.
Virtual Host/Space Binding
If you are using shared web hosting, you usually need to find the “Domains” or “Addon Domains” feature in the hosting control panel (such as cPanel). Enter the domain name you purchased there, and the system will automatically or manually create a website directory for you. After the binding is successful, upload your website files to that directory, and your domain name, server space, and website files will be linked together.
Bind Cloud Server/VPS
For cloud servers or VPSs with dedicated server access, the binding operation is performed in the web server software.
- For Nginx: You need to edit the Nginx configuration file (usually located in the `/etc/nginx/conf.d/` directory), create a new `server` block, and enter your domain name after the `server_name` directive, for example, `server_name yourdomain.com www.yourdomain.com;`, while also specifying the website root directory with `root`.
- For Apache: Likewise, you need to edit the virtual host configuration file and use the `ServerName` and `DocumentRoot` directives to specify the domain name and website file path, respectively.
After modifying the configuration file, you need to restart the web service (for example, `systemctl restart nginx`) for the changes to take effect.
Bindings & SSL Certificates
After completing the binding, it is strongly recommended to deploy an SSL certificate for your domain to enable HTTPS encrypted access. You can apply for free or paid certificates from cloud service providers, Let's Encrypt, and other organizations. After correctly configuring the certificate path in the Nginx or Apache configuration, when users visit your website, the browser address bar will display a secure lock icon, which not only protects the security of data transmission but is also a positive factor in search engine rankings.
Validation and Launch Check
After all configurations are completed, systematic verification is required to ensure that the website has been successfully launched and is operating normally.
Check resolution with command-line tools
In your computer's terminal or command prompt, use the `ping yourdomain.com` command to check whether the returned IP address is the server IP you configured. More professional tools are the `nslookup` or `dig` commands, which can query all DNS records for a domain name and help you confirm whether A records, CNAME records, and so on have taken effect correctly.
Check website accessibility
Directly enter your domain name in the browser address bar to see whether the website homepage opens properly. Check that all page links, images, stylesheets, and scripts load correctly. Test the domain both with and without `www` to ensure that both work properly and redirect correctly (according to your settings). This is the foundation of user experience.
Check if HTTPS is enabled
Enter `https://yourdomain.com` to verify that the website can be accessed securely via HTTPS, and that no “unsecure” warnings are displayed in the browser. Additionally, you should configure a forced redirect from HTTP to HTTPS to ensure that all traffic is routed through the encrypted channel. This is not only the best practice for security, but also a standard requirement for modern websites.
## Summary
From domain purchase and DNS configuration to server binding, it is a tightly linked technical process. Understanding the role and principles of each step is key to successfully setting up an online business. The entire process can be summarized as follows: purchase and register a domain with real-name verification through a registrar, point the domain to the server IP or alias through A/CNAME records in the DNS management panel, and finally bind the domain in the server's web service configuration to respond to requests.
By following the steps in this guide, even users without a technical background can clearly and systematically complete the final configuration tasks before a website goes live. Remember that “resolution” (addressing) is responsible for determining where a website should be located on the internet, while “binding” is responsible for handling requests from users. Only when these two processes work together can your domain name become a functional, accessible website.
FAQ Frequently Asked Questions
How long does it take for domain name resolution to take effect globally?
The time it takes for DNS resolution to take effect depends on the TTL value you set and the caches of DNS servers at each level. Usually, newly added records take effect within a few minutes to 2 hours, but it may take 24–48 hours to become fully stable worldwide. After modifying a record, patience is necessary.
Why did I change the DNS records, but it's still accessing the old website?
This is very likely caused by the local DNS cache. You can try clearing the DNS cache on your local computer (on Windows, use the `ipconfig /flushdns` command; on macOS, use the `sudo killall -HUP mDNSResponder` command), or switch to a different network environment (such as using your phone's 4G/5G network to access it) for testing. The most reliable method is to use an online global DNS propagation checking tool.
What's the difference between an A record and a CNAME record, and which one should I use?
An A record directly maps a domain name to a fixed IP address. A CNAME record, on the other hand, maps a domain name to another domain name (i.e., an alias). If your server’s IP address is fixed, use an A record. If you are using a third-party hosting service (such as GitHub Pages, Vercel, or a CDN), they usually provide you with a CNAME address, in which case you should use a CNAME record. It is generally not recommended to use CNAME records for the root domain name (`@`), as some DNS providers do not support this.
The domain name has already been resolved, but the server's default page is displayed when accessing it. What should I do?
This usually indicates that the domain name resolution was successful (the domain name was resolved to the correct server IP address), but the server binding process has not been completed yet, or the configuration is incorrect. Please log in to your server and check whether the `server_name` or `ServerName` setting for that domain name is correctly specified in the configuration files of your web server (Nginx/Apache). Also, make sure that the website files have been uploaded to the correct `root` or `DocumentRoot` directory.
How to set up a domain name email account?
To use a domain email address like `[email protected]`, you need to add MX records for your domain. First, you need to purchase a business email service (such as Tencent Exmail, Alibaba Exmail, Google Workspace, etc.). The service provider will provide the MX record values. You only need to add these MX records to your domain's DNS settings, fill in the priority as required by the provider, and then complete the backend configuration of the email accounts according to the provider's instructions.
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
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