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DNS Resolution Validation Settings Across Different Platforms

This document explains how to configure DNS resolution validation on various platforms to help users complete SSL certificate requests efficiently.

Introduction to Common DNS Record Types​

Record TypeDefinitionApplication Scenarios
AMaps a domain name to an IPv4 address; it is the fundamental record type for DNS resolution.Website access (for example, resolving www.example.com to 192.0.2.1), direct server IP binding.
AAAASimilar to the A record, but maps to an IPv6 address to support the next-generation Internet protocol.Device access in IPv6 network environments, compatibility with dual-stack network architectures.
CNAMESets a domain as an alias for another domain, indirectly pointing to the final IP address through the alias.
CDN acceleration (for example, pointing cdn.example.com to the CNAME address provided by the service provider);
Unified subdomain management (for example, pointing blog.example.com to the main site domain).
MXSpecifies the address of the server that receives email, used together with a priority value (such as 10 mail.example.com).Enterprise mailbox configuration (for example, directing email traffic to a self-built or third-party email server).
TXTStores arbitrary text information, commonly used for security validation or policy statements.SPF anti-spam (declaring the list of legitimate sending IPs);
Domain Control Validation (DCV) for SSL certificates (such as Let's Encrypt DNS validation).
CAAAuthorizes specific Certificate Authorities (CAs) to issue SSL certificates for a domain to prevent unauthorized issuance.Restricting certificate issuance permissions to enhance domain security (for example, allowing only Sectigo or DigiCert).
PTRReverse resolution that maps an IP address back to a domain name.Email server reverse validation (to prevent being marked as a spam source), network diagnostic tool queries.
NSSpecifies the authoritative DNS server address for a domain.DNS resolution authority delegation (for example, transferring subdomain resolution authority to another DNS service provider).
SOAMarks the start of authority information for a domain, including the primary DNS server, serial number, refresh time, etc.Used for DNS zone management and version control when synchronizing configuration changes.

DNS Resolution Validation Settings on Common Domain Management Platforms​

Prerequisites

You need to confirm which domain management platform is in use; if you are unsure, you can check via whois.

Alibaba Cloud​

  1. Log in to the Domain Management Console

    • Log in to your Alibaba Cloud account, enter the domain console interface, and click All Domains
    • Select the target domain: find the domain you need to operate on in the domain list, and click Resolve
    • Click Add Record

  2. Add a DNS resolution record

    • Select the record type
    • Fill in the resolution parameters
    • Host record
    • Record value

    After confirming the information is correct, click Confirm to complete the addition.

Note

The host record is the domain prefix, with common usages as follows:

  • www: The resolved domain is www.abc.com
  • @: Directly resolves the root domain abc.com
  • Wildcard resolution: Matches all other domains *.abc.com

Record types:

  • A record: Address record, used to specify the IPv4 address of a domain (e.g., 8.8.8.8). Add an A record if you need to point the domain to an IP address.
  • CNAME: Add a CNAME record if you need to point the domain to another domain that will then provide the IP address.
  • NS: Name server record. Add an NS record if you need to delegate subdomain resolution to another DNS service provider.
  • AAAA: Record used to specify the IPv6 address (e.g., ff06:0:0:0:0:0:0:c3) corresponding to a hostname or domain.
  • MX: Add an MX record if you need to set up email services so that mailboxes can receive emails.
  • TTL: Time To Live, the cache duration. The smaller the value, the faster modified records take effect across locations; the default value is 600 seconds.

Tencent Cloud​

  1. Log in to the Cloud DNS Console. On the My Resolution page, click the target domain to enter the record management page for that domain.

  2. On the record management page, click Add Record, fill in the following record information, and click Confirm to complete the addition.

Note

The host record is the domain prefix, with common usages as follows:

  • www: The resolved domain is www.abc.com
  • @: Directly resolves the root domain abc.com
  • Wildcard resolution: Matches all other domains *.abc.com

Record types:

  • A record: Address record, used to specify the IPv4 address of a domain (e.g., 8.8.8.8). Add an A record if you need to point the domain to an IP address.
  • CNAME: Add a CNAME record if you need to point the domain to another domain that will then provide the IP address.
  • NS: Name server record. Add an NS record if you need to delegate subdomain resolution to another DNS service provider.
  • AAAA: Record used to specify the IPv6 address (e.g., ff06:0:0:0:0:0:0:c3) corresponding to a hostname or domain.
  • MX: Add an MX record if you need to set up email services so that mailboxes can receive emails.
  • TTL: Time To Live, the cache duration. The smaller the value, the faster modified records take effect across locations; the default value is 600 seconds.

Xinnet​

  1. Log in to the Domain Management Console Log in to your Xinnet account, go to Product - Domain Management, and click the "Resolve" button next to the target domain.

  2. Add a DNS resolution record

    • Select the record type
    • Fill in the resolution parameters
    • Host record
    • Record value After confirming all information is correct, click Submit to complete the addition.
Tip

The host record is the domain name prefix. Common usages include:

  • www: The resolved domain name is www.abc.com
  • @: Resolves the root domain directly abc.com
  • Wildcard resolution: Matches all other domain names *.abc.com

Record types:

  • A record: Address record, used to specify the IPv4 address of a domain name (e.g., 8.8.8.8). Add an A record if you need to point your domain name to an IP address.
  • CNAME: Add a CNAME record if you need to point your domain name to another domain name that will provide the IP address.
  • NS: Name server record. Add an NS record if you need to delegate subdomain resolution to another DNS service provider.
  • AAAA: Record used to specify the IPv6 address corresponding to a host name (or domain name) (e.g., ff06:0:0:0:0:0:0:c3).
  • MX: Add an MX record if you need to configure mailboxes to receive emails.
  • TTL: Time-to-live (cache duration). The smaller the value, the faster record changes propagate globally. The default value is 600 seconds.

Racent​

  1. Log in to the Domain Management Console Access the Racent platform: log in to your Racent account, click Console --> DNS Resolution.

Select the target domain name: Find the domain you need to operate in the domain name list, click Resolve --> Add Resolution.

  1. Add a DNS resolution record
    • Select the record type
    • Fill in the resolution parameters
    • Host record
    • Value After confirming all information is correct, click Confirm to complete the addition.
Tip

The host record is the domain name prefix. Common usages include:

  • www: The resolved domain name is www.abc.com
  • @: Resolves the root domain directly abc.com
  • Wildcard resolution: Matches all other domain names *.abc.com

Record types:

  • A record: Address record, used to specify the IPv4 address of a domain name (e.g., 8.8.8.8). Add an A record if you need to point your domain name to an IP address.
  • CNAME: Add a CNAME record if you need to point your domain name to another domain name that will provide the IP address.
  • NS: Name server record. Add an NS record if you need to delegate subdomain resolution to another DNS service provider.
  • AAAA: Record used to specify the IPv6 address corresponding to a host name (or domain name) (e.g., ff06:0:0:0:0:0:0:c3).
  • MX: Add an MX record if you need to configure mailboxes to receive emails.
  • TTL: Time-to-live (cache duration). The smaller the value, the faster record changes propagate globally. The default value is 600 seconds.

Huawei Cloud​

  1. Log in to the Domain Management Console Log in to the Huawei Cloud DNS console. Go to the Cloud Resolution resource list. Select the domain name to be configured from the public domain name list, and click Manage Resolution.

In the top right corner of the page, click "Add Resolution Record".

  1. Add a DNS resolution record Fill in the parameters:
    • Type: A (IP), CNAME (alias), MX (mail), etc.
    • Host record: Subdomain (e.g., www, @ for the root domain)
    • Record value: Target address (IP or domain name provided by the service provider)
    • TTL: Defaults to 600 seconds; keep the automatic setting After confirming all information is correct, click Confirm to complete the addition.
Tip

The host record is the domain name prefix. Common usages include:

  • www: The resolved domain name is www.abc.com
  • @: Resolves the root domain directly abc.com
  • Wildcard resolution: Matches all other domains *.abc.com

Record Type:

  • A record: Address record, used to specify the IPv4 address of a domain (e.g. 8.8.8.8). Add an A record if you need to point a domain to an IP address.
  • CNAME: Add a CNAME record if you need to point a domain to another domain, which then provides the IP address.
  • NS: Name server record. Add an NS record if you need to delegate subdomain resolution to another DNS service provider.
  • AAAA: Record used to specify the IPv6 address corresponding to a hostname (or domain) (e.g. ff06:0:0:0:0:0:0:c3).
  • MX: Add an MX record if you need to set up email service so that the mailbox can receive emails.
  • TTL: Time-to-live (cache duration). The smaller the value, the faster record changes take effect across locations. The default is 600 seconds.

Guoke Cloud​

  1. Log in to the Domain Management Console Visit the official Guoke Cloud website: Log in to your Guoke Cloud account and enter the domain management console.

Select the target domain: Locate the domain you need to operate on in the domain list, and click DNS Resolution Management or a similar function entry.

  1. Add a DNS Resolution Record
    • Select the record type
    • Fill in the resolution parameters
    • Hostname
    • Record value
    • TTL (cache duration): The default value of 600 seconds (10 minutes) is recommended; you can adjust it as needed.
    • Resolution line: Supports the default line (automatically matches ISPs/regions) or custom lines (specified IP ranges).
    • Save settings After confirming the information is correct, click Save or Confirm to complete the addition.
Tip

The host record is the domain prefix. Common uses include:

  • www: The resolved domain name is www.abc.com
  • @: Resolves the root domain directly abc.com
  • Wildcard resolution: Matches all other domains *.abc.com

Record Type:

  • A record: Address record, used to specify the IPv4 address of a domain (e.g. 8.8.8.8). Add an A record if you need to point a domain to an IP address.
  • CNAME: Add a CNAME record if you need to point a domain to another domain, which then provides the IP address.
  • NS: Name server record. Add an NS record if you need to delegate subdomain resolution to another DNS service provider.
  • AAAA: Record used to specify the IPv6 address corresponding to a hostname (or domain) (e.g. ff06:0:0:0:0:0:0:c3).
  • MX: Add an MX record if you need to set up email service so that the mailbox can receive emails.
  • TTL: Time-to-live (cache duration). The smaller the value, the faster record changes take effect across locations. The default is 600 seconds.
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