{"id":12359486,"date":"2026-03-10T20:54:08","date_gmt":"2026-03-10T12:54:08","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e5%9f%9f%e5%90%8d%e8%a7%a3%e6%9e%90%e4%b8%8e%e9%85%8d%e7%bd%ae%e5%85%a8%e6%94%bb%e7%95%a5%ef%bc%9a%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%e6%8e%8c%e6%8f%a1%e7%bd%91%e7%ab%99%e8%ae%bf%e9%97%ae%e7%9a%84\/"},"modified":"2026-03-12T08:39:17","modified_gmt":"2026-03-12T00:39:17","slug":"domain-resolution-and-configuration-guide-from-scratch","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/en\/knowledge\/domain\/domain-resolution-and-configuration-guide-from-scratch\/","title":{"rendered":"Domain Name Resolution and Configuration Guide: Master the Basics of Website Access from Scratch"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Registering a domain name is just the first step in building a website. To enable users on the internet to access your website content through that address, you need to perform two crucial tasks: \u201cdomain name resolution\u201d and \u201cconfiguration.\u201d This process is like assigning the correct house number (domain name) and providing clear map directions (resolution records) to your \u201chouse\u201d (server), so that visitors can reach your website smoothly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is domain name resolution?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Domain name resolution, also known as DNS (Domain Name System) resolution, is the process of converting human-readable domain names (such as `www.example.com`) into machine-readable IP addresses (such as `192.0.2.1`). All devices on the Internet are located and communicate using IP addresses, but IP addresses are difficult to remember. The Domain Name System was created to solve this problem; it acts as the \u201ctelephone book\u201d of the Internet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How the Domain Name System Works<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When you enter a website address in your browser, the resolution process begins quietly. Your computer first checks the local DNS cache. If no record is found, it sends a request to the recursive DNS server designated by your internet service provider. This recursive DNS server then queries the DNS system, starting from the root servers and working its way down level by level, until it finds the authoritative DNS server responsible for that domain name. The authoritative server provides the final IP address. Although this process involves several steps, it usually takes only a few milliseconds to complete.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\\nCore analysis record type<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When configuring domain names, you will come across several main types of DNS records, each with its own specific function:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>A Record: The most basic type of record, used to map a domain name to an IPv4 address. For example, it can be used to point `www.example.com` to `192.0.2.1`.<\/li><li>- AAAA record: Similar to an A record, but it points to an IPv6 address.<\/li><li>CNAME record: Also known as an alias record, it is used to point one domain name to another domain name. For example, pointing `blog.example.com` to `www.example.com` allows them to share the same IP address.<\/li><li>MX Record: A mail exchange record that specifies the email server address responsible for receiving emails for a particular domain name. The priority of this record is determined by the numerical value contained within it; the smaller the value, the higher the priority.<\/li><li>TXT record: A text-based record commonly used for domain name ownership verification (such as with Google Search Console), as well as for email security policies (SPF, DKIM, DMARC), etc.<\/li><li>NS Record: This record specifies which authoritative DNS server is responsible for resolving the domain name. You usually need to modify this record when you host your domain name with a third-party DNS service provider.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">The complete configuration process for domain name resolution<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mastering the configuration of domain name resolution is an essential skill for every website manager. Below, we will break down the complete set of steps to be followed.<\/p>\n<!-- AUTO_SYNCED_PATTERN_INSERT_START -->\n\n  <div class=\"flex justify-between items-center flex-col lg:flex-row xl:flex-col 2xl:flex-row gap-6 sm:gap-8 rounded-lg border border-gray-200 dark:border-gray-700 p-4 mb-8 lg:mb-10 sm:p-6 bg-white dark:bg-gray-750 shadow-md transition-colors duration-300\"\n         data-link=\"https:\/\/www.likacloud.com\/en\/tolink\/hosting-com-domains\/\">\n\n      <div class=\"flex flex-col gap-3 gap-4 sm:gap-6 w-full\">\n        <strong class=\"text-2xl font-semibold text-gray-900 dark:text-gray-200\">Hosting.com domain name registration<\/strong>\n        <div class=\"text-gray-600 dark:text-gray-300 word-word\">Get a free .com domain name for a year with an annual shared hosting plan, support for 300+ domain extensions, free DNS management, and 24\/7 customer support!<\/div>\n      <\/div>\n\n      <div class=\"flex items-center flex-col md:flex-row lg:flex-col xl:flex-row 2xl:flex-col gap-6 shrink-0\">\n                  <a href=\"https:\/\/www.likacloud.com\/en\/tolink\/hosting-com-domains\/\">\n                          <!-- \u767d\u5929 -->\n              <img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/09\/20250901222940.svg\" alt=\"Domain Registration LOGO\" class=\"content-promotion-card-icon h-9 min-h-9 dark:hidden\" title=\"\">\n              <!-- \u591c\u95f4 -->\n              <img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251228220957.webp\" alt=\"Domain Registration LOGO\" class=\"content-promotion-card-icon h-9 min-h-9 hidden dark:block\" title=\"\">\n                      <\/a>\n          \n        <a href=\"https:\/\/www.likacloud.com\/en\/tolink\/hosting-com-domains\/\"\n           class=\"bg-blue-500 w-full md:w-auto lg:w-full xl:w-auto 2xl:w-full text-center !text-white dark:!text-gray-200 !px-5 !py-1.5 rounded-full hover:bg-blue-600 transition-colors\">\n          Visit hosting.com        <\/a>\n      <\/div>\n    <\/div>\n\n    \n<!-- AUTO_SYNCED_PATTERN_INSERT_END -->\n\n\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Obtain the necessary server information<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Before you start the configuration process, you need to obtain the following key information from your website hosting service provider or server provider:<br \/>\n1. The server\u2019s IP address (used for A\/AAAA records).<br \/>\n2. If you need to set up an email account, you will need to obtain the domain name or IP address of the email server (used for MX records).<br \/>\n3. If you are using a third-party DNS service (such as Cloudflare or Alibaba Cloud DNS), you may need to know the IP addresses of their DNS servers (which are used for the NS records).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Log in to the Domain Name Management Control Panel<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Log in to the domain name management interface using the account provided by your domain name registrar (such as Alibaba Cloud, Tencent Cloud, GoDaddy, etc.). Locate the section related to \u201cDNS Management,\u201d \u201cDomain Name Resolution,\u201d or \u201cName Server.\u201d<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>Recommended Reading <a href=\"https:\/\/www.likacloud.com\/ja\/knowledge\/domain\/domain-resolution-and-configuration-complete-guide-from-purchase-to-deployment\/\">Domain Name Resolution and Configuration Guide: A Comprehensive Step-by-Step Guide from Purchase to Deployment<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<h3 class=\"wp-block-heading\">Step 3: Add and modify resolution records<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In the parsing management interface, you can find the option to add records. Taking a basic website as an example, the typical records you need to add include:<br \/>\nAdd an A record, with the host record filled in as `www` and the record value filled in as your server's IP address. This enables access to `www.yourdomain.com`.<br \/>\nAdd an A record, with the host record filled in as `@` (representing the root domain name) and the record value filled in as the same server IP address. This enables direct access to `yourdomain.com`.<br \/>\nIf required by the service provider, you may also need to add a CNAME record that points `@` to the address with `www`, or vice versa, to enable unified access. Nowadays, it is more recommended to use A records for separate resolution.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For corporate email accounts, you need to add MX (Mail Exchange) records. The host record is usually `@`, and the record value should be the domain name of the server provided by your email service provider. You also need to set the appropriate priority for these records.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: Understand and set the TTL<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">TTL stands for \u201cTime To Live\u201d and is measured in seconds. It determines how long a DNS record is stored on various cache servers. A shorter TTL (for example, 300 seconds) means that changes to the record take effect more quickly around the world, but it also increases the load on the DNS servers due to more frequent queries. A longer TTL (for example, 86,400 seconds, or one day) reduces the number of queries, but the propagation of changes is slower. You can use a longer TTL when your website is stable; however, it is recommended to temporarily shorten the TTL during migration or debugging phases.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Advanced configuration and optimization strategies<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">After ensuring that the basic parsing configurations are in place, the following advanced strategies can be considered to enhance the website's performance, security, and availability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Using third-party professional DNS services<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The free DNS services offered by many domain name registrars may have limited performance and functionality. Switching to professional third-party DNS service providers (such as Cloudflare, Google Cloud DNS, or AWS Route 53) can provide significant advantages:<br \/>\nGlobal Acceleration: Through intelligent analysis by nodes located around the world, user requests are directed to the nearest server.<br \/>\nHigh availability: It provides stronger anti-attack capabilities and a higher commitment to service availability.<br \/>\nRich functionality: It integrates security features such as DDoS protection, web application firewall, and SSL\/TLS encryption.<br \/>\nDNSSEC: Supports Domain Name System Security Extensions, preventing attacks such as DNS cache poisoning.<\/p>\n<!-- AUTO_SYNCED_PATTERN_INSERT_START -->\n\n  <div class=\"flex justify-between items-center flex-col lg:flex-row xl:flex-col 2xl:flex-row gap-6 sm:gap-8 rounded-lg border border-gray-200 dark:border-gray-700 p-4 mb-8 lg:mb-10 sm:p-6 bg-white dark:bg-gray-750 shadow-md transition-colors duration-300\"\n         data-link=\"https:\/\/www.likacloud.com\/en\/tolink\/ultahost-domain\/\">\n\n      <div class=\"flex flex-col gap-3 gap-4 sm:gap-6 w-full\">\n        <strong class=\"text-2xl font-semibold text-gray-900 dark:text-gray-200\">UltaHost Domain Name Registration<\/strong>\n        <div class=\"text-gray-600 dark:text-gray-300 word-word\">300+ Domain Suffixes, choose an annual hosting plan and enjoy free domains! Transfer domains to Ultahost for free 1 year renewal, .com $9.49 first year!<\/div>\n      <\/div>\n\n      <div class=\"flex items-center flex-col md:flex-row lg:flex-col xl:flex-row 2xl:flex-col gap-6 shrink-0\">\n                  <a href=\"https:\/\/www.likacloud.com\/en\/tolink\/ultahost-domain\/\">\n                          <!-- \u767d\u5929 -->\n              <img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251227020448.webp\" alt=\"Domain Registration LOGO\" class=\"content-promotion-card-icon h-9 min-h-9 dark:hidden\" title=\"\">\n              <!-- \u591c\u95f4 -->\n              <img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251229052118.webp\" alt=\"Domain Registration LOGO\" class=\"content-promotion-card-icon h-9 min-h-9 hidden dark:block\" title=\"\">\n                      <\/a>\n          \n        <a href=\"https:\/\/www.likacloud.com\/en\/tolink\/ultahost-domain\/\"\n           class=\"bg-blue-500 w-full md:w-auto lg:w-full xl:w-auto 2xl:w-full text-center !text-white dark:!text-gray-200 !px-5 !py-1.5 rounded-full hover:bg-blue-600 transition-colors\">\n          Visit UltaHost        <\/a>\n      <\/div>\n    <\/div>\n\n    \n<!-- AUTO_SYNCED_PATTERN_INSERT_END -->\n\n\n\n\n\n<p class=\"wp-block-paragraph\">The typical migration method involves creating all the necessary resolution records with a third-party DNS service provider, and then updating the NS (Name Server) records at the domain name registrar to point to the addresses provided by that service provider.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Configuring Subdomains and Load Balancing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Subdomains can help you clearly organize and separate different functional sections of your website.<br \/>\nBlog: `blog.yourdomain.com`<br \/>\nHelp documentation: `docs.yourdomain.com`<br \/>\nApplication Programming Interface: `api.yourdomain.com`<br \/>\nTest environment: `test.yourdomain.com`<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Using CNAME or A records, these subdomains can be directed to different servers or services. For websites with high traffic, you can use DNS round-robin (a simple form of load balancing) or multiple A records pointing to various server IPs, with the browser automatically selecting one of them. However, more advanced load balancing solutions typically involve the use of global load balancers for better management.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>Recommended Reading <a href=\"https:\/\/www.likacloud.com\/ja\/knowledge\/domain\/register-manage-first-website-domain-30-days-beginners-guide\/\">How to Register and Manage Your First Website Domain in 30 Days: A Beginner\u2019s Ultimate Guide<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<h3 class=\"wp-block-heading\">Implementing HTTPS and CAA (Certificate Authority Authorization) records<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In today's internet, enabling HTTPS is a standard requirement. This is typically achieved by installing an SSL\/TLS certificate on your web server. Before issuing a certificate, the certificate authority (CA) needs to verify your control over the domain name, and one of the methods for verification is to have you add a specific TXT record in the DNS.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To enhance security, you can configure CAA (Certificate Authority Authorization) records. These records specify which certificate authorities are authorized to issue SSL certificates for your domain name, which helps prevent unauthorized or malicious entities from issuing certificates on your behalf.<\/p>\n<!-- AUTO_SYNCED_PATTERN_INSERT_START -->\n<div class=\"grid grid-cols-1 md:grid-cols-2 gap-4 md:gap-6 mb-8 md:mb-10 mt-10\"> \r\n\t<!-- \u91cd\u590d\u5668\u5faa\u73af\u5f00\u59cb -->\r\n\t\t\r\n\t<!-- \u5546\u5bb6\u5361\u7247 -->\r\n\t<div class=\"bg-white dark:bg-gray-750 rounded-lg overflow-hidden shadow-md flex gap-1 flex-col     justify-between\" data-link=\"https:\/\/www.likacloud.com\/en\/tolink\/bluehost-domains\/\">\r\n\t\t<div class=\"flex items-start justify-between\"> \r\n\t\t\t<!-- \u5546\u5bb6logo -->\r\n\t\t\t<div class=\"w-16 h-16 bg-blue-200 dark:bg-blue-500\/30 flex items-center justify-center flex-shrink-0 p-3\">\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2025\/12\/20251231095917.webp\" alt=\"Bluehost Domain Registration\" class=\"w-12 object-contain !dark-filter08\" title=\"\">\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t<!-- \u5546\u5bb6\u4fe1\u606f -->\r\n\t\t\t<div class=\"px-4 pt-2 flex-grow\">\r\n\t\t\t\t<div class=\"flex justify-between items-start mb-2\">\r\n\t\t\t\t\t<strong class=\"text-xl font-bold\">Bluehost Domain Registration<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\t<span class=\"text-gray-500 dark:text-gray-300 !text-sm p-4 pb-0\">Support AI domain name generator, 24\/7 service support<\/span>\r\n\t\t\t\t<div class=\"flex flex-col gap-4 md:gap-6 justify-between p-4\"> \r\n\t\t\t<!-- \u6807\u7b7e -->\r\n\t\t\t\t\t\t\r\n\t\t\t<!-- \u6d3b\u52a8\u548c\u94fe\u63a5 --> \r\n\t\t\t<div class=\"flex justify-between items-center gap-3 flex-col\">\r\n\t\t\t\t\t\t\t\t<div class=\"text-gray-500 dark:text-gray-300 !text-sm line-clamp-1\">Generating domain names with AI<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.likacloud.com\/en\/tolink\/bluehost-domains\/\" class=\"flex justify-end font-bold !text-lg !text-blue-600 dark:!text-blue-500\">Visit Bluehost Domain Name Registration \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t\r\n\t<!-- \u5546\u5bb6\u5361\u7247 -->\r\n\t<div class=\"bg-white dark:bg-gray-750 rounded-lg overflow-hidden shadow-md flex gap-1 flex-col     justify-between\" data-link=\"https:\/\/www.likacloud.com\/en\/tolink\/wordpress-com\/\">\r\n\t\t<div class=\"flex items-start justify-between\"> \r\n\t\t\t<!-- \u5546\u5bb6logo -->\r\n\t\t\t<div class=\"w-16 h-16 bg-blue-200 dark:bg-blue-500\/30 flex items-center justify-center flex-shrink-0 p-3\">\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.likacloud.com\/wp-content\/uploads\/2026\/01\/20260107032104.svg\" alt=\"WordPress.com Domain Registration\" class=\"w-12 object-contain !dark-filter08\" title=\"\">\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t<!-- \u5546\u5bb6\u4fe1\u606f -->\r\n\t\t\t<div class=\"px-4 pt-2 flex-grow\">\r\n\t\t\t\t<div class=\"flex justify-between items-start mb-2\">\r\n\t\t\t\t\t<strong class=\"text-xl font-bold\">WordPress.com Domain Registration<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\t<span class=\"text-gray-500 dark:text-gray-300 !text-sm p-4 pb-0\">With up to 69% discount + free migration on select plans, you can choose from .com, .blog and more than 350 other domain extensions to register.<\/span>\r\n\t\t\t\t<div class=\"flex flex-col gap-4 md:gap-6 justify-between p-4\"> \r\n\t\t\t<!-- \u6807\u7b7e -->\r\n\t\t\t\t\t\t\r\n\t\t\t<!-- \u6d3b\u52a8\u548c\u94fe\u63a5 --> \r\n\t\t\t<div class=\"flex justify-between items-center gap-3 flex-col\">\r\n\t\t\t\t\t\t\t\t<div class=\"text-gray-500 dark:text-gray-300 !text-sm line-clamp-1\">Free domain name for the first year when you buy an annual paid plan<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.likacloud.com\/en\/tolink\/wordpress-com\/\" class=\"flex justify-end font-bold !text-lg !text-blue-600 dark:!text-blue-500\">Visit WordPress.com domain registration \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t<!-- \u91cd\u590d\u5668\u5faa\u73af\u7ed3\u675f -->\r\n<\/div>\r\n\r\n\r\n\n<!-- AUTO_SYNCED_PATTERN_INSERT_END -->\n\n\n\n\n\n<h2 class=\"wp-block-heading\">Fault Troubleshooting and Common Issues<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">After the configuration is parsed, the changes may not take effect immediately. Here are some troubleshooting tools and methods.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Diagnostic tools: nslookup and dig<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>`nslookup`: A command-line tool that comes pre-installed on both Windows and Linux\/macOS. By entering `nslookup www.yourdomain.com` in the Command Prompt or Terminal, you can view the resolved IP address and the DNS servers that were used.<\/li><li>`dig` (Domain Information Groper): On Linux\/macOS or in WSL on Windows, this is a more powerful and informative query tool. Entering `dig www.yourdomain.com` will provide you with detailed information about the resolution process, record types, TTL values, and more, making it the preferred choice for professionals.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Frequently Asked Questions and Solutions<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1. Parsing issues or slow performance: First, check the local DNS cache; you can try refreshing it (Windows: `ipconfig \/flushdns`, macOS: `sudo killall -HUP mDNSResponder`). Additionally, make sure that the changes made in the control panel have been saved. Note that the propagation of global DNS records takes time, and the duration depends on the TTL (Time To Live) value you have set.<br \/>\n2. CNAME Record Conflict: According to RFC standards, if a hostname already has other records (such as MX or TXT records), a CNAME record cannot be added to it. In this case, you may consider using an A record instead, or adjusting the structure of your records.<br \/>\n3. Email cannot be sent or received: Focus on checking whether the MX records are correctly set, especially the record values and priorities. Additionally, verify that the relevant security settings, such as SPF and DKIM TXT records, are configured correctly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">summarize<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Domain name resolution and configuration are the core technologies that link domain names to website services. From understanding basic records such as A, CNAME, and MX records, to skillfully adding and modifying these records in management panels, to utilizing third-party DNS services, subdomain policies, and CAA (Domain Authority Validation) records for advanced optimization and security enhancement, every step is crucial for the accessibility, performance, and security of a website. Mastering the principles of DNS operation and configuration not only enables you to handle website construction and server migrations with ease but also becomes an essential skill for accurately managing your digital assets in the internet world. Remember: after making any changes to the DNS settings, patience is key. Using tools like `dig` or `nslookup` to verify the changes is essential to ensure success.<\/p>\n<!-- AUTO_INTERNAL_LINKS_START --><p>Recommended Reading <a href=\"https:\/\/www.likacloud.com\/ja\/knowledge\/domain\/how-to-choose-and-register-a-domain-name-complete-guide\/\">How to Choose and Register Domain Names Correctly: A Complete Guide from Novice to Expert<\/a>\u3002<\/p><!-- AUTO_INTERNAL_LINKS_END -->\n\n\n\n\n<h2 class=\"wp-block-heading\">FAQ Frequently Asked Questions<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">How long will it take for the DNS record changes to take effect after they're made?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The global effective time depends on the TTL (Time To Live) value you set. Theoretically, all cached data should be updated after the TTL period has expired. In practice, due to the varying caching policies of ISPs around the world, it may take several minutes to up to 48 hours for the changes to take full effect. It is recommended to reduce the TTL value (for example, to 300 seconds) before performing important operations such as website migrations. Once the changes have been made and stabilized, you can then increase the TTL value back to its original level.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What is DNS caching? How to clear it?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DNS caching is a mechanism used by computers or network devices to speed up domain name lookups by temporarily storing the most recent domain-name-to-IP address mappings. When the local cache contains outdated IP addresses, it can result in the inability to access updated websites.<br \/>\nCleaning method: Run `ipconfig \/flushdns` in the Windows Command Prompt; run `sudo killall -HUP mDNSResponder` in the macOS Terminal; on Linux, it depends on the system configuration. Usually, you can restart the network services or use `systemd-resolve --flush-caches`.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Why is it necessary to modify the DNS servers for a domain name?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The purpose of changing your DNS server is to transfer the control over the resolution of your domain name from the domain registrar to another DNS service provider. This is usually done to achieve faster resolution times, better resistance to attacks, more advanced management features (such as traffic analysis and security protection), or higher reliability. For example, many users host their DNS with Cloudflare to take advantage of its security and performance services.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What is the difference between an A record and a CNAME record, and how should I choose which one to use?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">An A record directly maps a hostname to an IP address (for example, `blog -&gt; 192.0.2.1`), while a CNAME record maps a hostname to another domain name (for example, `blog -&gt; www.example.com`).<br \/>\nThe selection principle is as follows: For the root domain (`@`) and records that ultimately point to a server, A records should be used preferentially, because CNAME records cannot coexist with certain types of records (such as MX records). For subdomains that point to third-party services or different services on the same server (for example, `blog` pointing to a WordPress hosting service), CNAME records are usually used. This way, you don\u2019t need to modify your DNS settings when the IP address of the target service changes.<\/p>","protected":false},"excerpt":{"rendered":"<p>This article systematically introduces the basic concepts and working principles of Domain Name System (DNS), explains in detail the functions of core DNS records such as A records, CNAME records, and MX records, and provides a comprehensive guide on the configuration process \u2013 from obtaining server information to logging in to the management panel and adding or modifying records. It is a practical guide for website administrators to master domain name access configuration.<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[398,564,44,450,378],"knowledge_category":[279],"class_list":["post-12359486","knowledge_post","type-knowledge_post","status-publish","hentry","tag-dns-resolution","tag-dns-records","tag-domain","tag-domain-configuration","tag-website-development","knowledge_category-domain"],"acf":{"site_seo_keywords":"\u57df\u540d\u89e3\u6790\uff0cDNS\u914d\u7f6e\uff0c\u57df\u540d\u89e3\u6790\u8bb0\u5f55\uff0cA\u8bb0\u5f55\uff0cCNAME\u8bb0\u5f55\uff0cMX\u8bb0\u5f55\uff0c\u7f51\u7ad9\u57df\u540d\u8bbe\u7f6e\uff0c\u4ece\u96f6\u5f00\u59cb\u914d\u7f6e\u57df\u540d"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/en\/wp-json\/wp\/v2\/knowledge_posts\/12359486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.likacloud.com\/en\/wp-json\/wp\/v2\/knowledge_posts"}],"about":[{"href":"https:\/\/www.likacloud.com\/en\/wp-json\/wp\/v2\/types\/knowledge_post"}],"author":[{"embeddable":true,"href":"https:\/\/www.likacloud.com\/en\/wp-json\/wp\/v2\/users\/7"}],"version-history":[{"count":0,"href":"https:\/\/www.likacloud.com\/en\/wp-json\/wp\/v2\/knowledge_posts\/12359486\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/en\/wp-json\/wp\/v2\/media?parent=12359486"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/en\/wp-json\/wp\/v2\/tags?post=12359486"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/en\/wp-json\/wp\/v2\/knowledge_category?post=12359486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}