Free DNS Name

Free DNS Name

Domain Name Service (DNS) is a highly available and scalable authoritative DNS service that translates domain names into IP addresses, reliably directing end users to your applications.

Domain Name Service (DNS) is a highly available and scalable authoritative DNS service that translates domain names into IP addresses, reliably directing end users to your applications.

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Product Advantages

  • Flexible Routing

    DNS routes traffic based on multiple criteria, including endpoint health and geographic region. You can configure traffic routing to resolve specific end user requests.

    DNS routes traffic based on multiple criteria, including endpoint health and geographic region. You can configure traffic routing to resolve specific end user requests.

  • High Performance

    A single DNS node can handle millions of concurrent queries. Huawei's global infrastructure allows your end users to quickly access the closest application endpoints that are healthy, minimizing latency.

    A single DNS node can handle millions of concurrent queries. Huawei's global infrastructure allows your end users to quickly access the closest application endpoints that are healthy, minimizing latency.

  • Easy-of-Use

    You can easily configure DNS records using the console or APIs. DNS immediately handles queries once you create a zone and add record sets to it.

    You can easily configure DNS records using the console or APIs. DNS immediately handles queries once you create a zone and add record sets to it.

  • Robust Security

    DNS offers built-in DDoS mitigation and works with Anti-DDoS to ensure that requests from your legitimate end users are not affected.

    DNS offers built-in DDoS mitigation and works with Anti-DDoS to ensure that requests from your legitimate end users are not affected.

Application Scenarios

General DNS Resolution

General DNS Resolution

DNS enables you to map domain names to instances such as ECSs, OBS buckets, and load balancers.

Advantages

  • High Concurrency

    A single node can handle millions of concurrent queries.

  • Multiple Record Types

    You can add multiple types of record sets. 

  • Quick Operations

    You can import up to 500 record sets on the DNS console. The record sets you add are effective within a minute.

Related Services
ECS
ELB
OBS
Service Management

Service Management

You can create public and private zones for the same domain name and deploy your applications online and offline.

Advantages

  • Smooth Deployment

    You can easily deploy applications online and offline and seamlessly update offline changes to the online applications.

  • Easy Maintenance

    You can test offline applications in a VPC without interrupting online applications.

Related Services
VPC
ECS
Application Deployment

Application Deployment

You can map private IP addresses of servers to private domain names in specific VPCs, thereby allowing the servers to communicate by using domain names. 

Advantages

  • No Code Modification

    If a server becomes faulty, you only need to change its IP address in the DNS record set. You do not need to change the code. 

  • Free from DNS Spoofing

    You do not need to worry about DNS spoofing because private domain names are not exposed to the Internet.

  • Lower Latency

    A private DNS server directly responds to requests for private domain names, ensuring lower latency for your end users.

Related Services
VPC
ELB
ECS

Service Overview

  • DNS Infographics

    The DNS service offers private domain names for you to configure your own authoritative DNS servers in VPCs. By doing so, you can improve DNS resolution efficiency, reduce network latency, and prevent your private domain names from exposing to DNS spoofing on the Internet.

    The DNS service offers private domain names for you to configure your own authoritative DNS servers in VPCs. By doing so, you can improve DNS resolution efficiency, reduce network latency, and prevent your private domain names from exposing to DNS spoofing on the Internet.

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  • What Is DNS?

    Domain Name Service (DNS) is a highly available and scalable authoritative Domain Name System (DNS) web service that translates domain names (such as www.example.com) into IP addresses (such as 192.1.2.3) required for network connection.

    Domain Name Service (DNS) is a highly available and scalable authoritative Domain Name System (DNS) web service that translates domain names (such as www.example.com) into IP addresses (such as 192.1.2.3) required for network connection.

    Learn More

  • Public Domain Name Resolution

    A public zone contains information about how a domain name and its subdomains are translated into IP addresses for routing traffic over the Internet. Public zones allow end users to access your website or application over the Internet using your domain name.

    A public zone contains information about how a domain name and its subdomains are translated into IP addresses for routing traffic over the Internet. Public zones allow end users to access your website or application over the Internet using your domain name.

    Learn More

  • Reverse Resolution

    Reverse resolution, also reverse DNS lookup, resolves an IP address back to a host name. This is typically used to affirm the credibility of email servers.

    Reverse resolution, also reverse DNS lookup, resolves an IP address back to a host name. This is typically used to affirm the credibility of email servers.

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  • Intelligent Resolution

    If end users access a domain name, DNS servers return the same IP address to the end users regardless of their networks or geographic locations.

    If end users access a domain name, DNS servers return the same IP address to the end users regardless of their networks or geographic locations.

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  • Functions

    Before you use the DNS service, you'd better get familiar with Product Concepts to better understand the functions

    Before you use the DNS service, you'd better get familiar with Product Concepts to better understand the functions

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User Guide
Public Zones
Overview

A public zone provides information to translate a domain name and its subdomains into IP addresses required for network communications over the Internet. 
Creating a Public Zone

If your domain name is registered with a third-party registrar, create a public zone and add record sets to it on the DNS console.
Managing Public Zones

You can modify a public zone, delete a public zone, batch delete public zones, enable or disable a public zone, or view details about a public zone.
Regaining a Domain Name

You have registered a domain name example.com with a third-party registrar and want to use Huawei Cloud DNS to resolve the domain name. 
Private Zones
Overview

A private zone contains information about how to map a domain name and its subdomains used within one or more VPCs to private IP addresses.

Creating a Private Zone

Create a private zone to map a private domain name to a private IP address within a VPC.
Managing Private Zones

You can modify a private zone, delete a private zone, batch delete private zones, or view details about a private zone.
Associating a VPC with a Private Zone

Associate a VPC with a private zone so that the private domain name can be resolved within this VPC.
PTR Records
Overview

Reverse resolution means to obtain a domain name based on an IP address. This is typically used to affirm the credibility of email servers.
Creating a PTR Record

PTR records are used to prove credibility of IP addresses and domain names of email servers. 
Managing PTR Records

You can modify a PTR record, delete a PTR record, batch delete PTR records, or view details about a PTR record.
Intelligent Resolution
Configuring ISP Lines

Usually, a DNS server returns the same IP address to visitors from different networks. However, in cross-network access, this would lead to high latency and poor user experience.
Configuring Region Lines

Usually, a DNS server returns the same resolution result to all visitors, irrespective of where they come from. In cross-region access, this would lead to long latency and poor user experience.
Configuring Custom Lines

The public zone function provides you with more than 300 carrier and region resolution lines. You can also customize resolution lines based on specific IP address ranges. 
Configuring Weighted Routing

A large website is generally deployed on multiple servers. To balance the load of each server, you can use weights to control the proportion of requests to each server.
Record Sets
Record Set Overview

A record set is a collection of resource records that belong to the same domain name. A record set defines DNS record types and values.
Disable or Enabling Record Sets

The domain name registry reviews the legitimacy of the website and requires that the website cannot be accessed during the domain name licensing period. 
Exporting Record Sets

If you want to transfer your domain name from the DNS service to another cloud provider, you can export your record sets. Both public and private zones support the record export function.
Configuring a Wildcard DNS Record Set

A wildcard record set with its name set to an asterisk (*) can map all subdomains of the domain name to the same value.

Getting Started

  • Routing Internet Traffic to a Website

    After you register a domain name and set up a website, you can configure record sets to point the domain name to the IP address of the web server where the website is deployed so that visitors can use the domain name to access your website over the Internet.

    Learn More

  • Routing Traffic Within VPCs

    If you have deployed ECSs and other cloud services on Huawei Cloud, you can configure private domain names for the ECSs so that they can communicate with each other or access the cloud services over a private network.

    Learn More

  • Translating an IP Address to a Domain Name

    PTR records are used to prove credibility of IP addresses and domain names of email servers. To avoid being tracked, most spam senders use email servers whose IP addresses are dynamically allocated or not mapped to registered domain names. 

    Learn More

FAQ

FAQ

  • Does DNS Support Wildcard Entries?

    DNS allows you to configure wildcard entries.

    A wildcard entry is a record set that uses an asterisk (*) as the name and matches requests for any domain name based on the configuration you set. For more information, see RFC 4592.

    DNS supports wildcard entries for the following record set types: A, AAAA, MX, CNAME, TXT, PTR, CAA, and SRV.

  • When Will a New Record Set Take Effect?

    If a record set is being added for the first time, it takes effect immediately.

    If you delete a record set and add it again, it will take effect after the cache for the deleted record set expires. The amount of time is controlled by the TTL value configured for the deleted record set.

    In some cases, the carrier may prolong the cache duration of a domain name.

  • Why Can't My Website Be Accessed over HTTPS?

    If you want your website to be accessed over HTTPS, deploy an SSL certificate for the website.

  • Can I Modify a Zone?

    No. You can modify only the email address and its description.

  • Do I Need to Register Private Domain Names?

    Private domain names take effect only in associated VPCs. Therefore, you do not need to register them.

    You can customize any private domain name, other than .com, as long as it complies with domain name specifications. All private domain names are free.

  • What Is a PTR Resolution?

    Generally, DNS is to resolve a domain name to an IP address. When you access a website domain name, DNS maps the domain name to the IP address of the website, so you can access the website content.

    Reverse resolution obtains domain names or host addresses based on IP addresses. It is usually used in scenarios such as anti-spam and logging.

    1. Anti-spam: Query the domain name of the mail server based on the IP address of the sender's mail server to obtain the reputation of the domain name.
    2. Logging: Query the domain name or host name based on the IP address to distinguish service data.

    An A record is stored under a zone. Reverse resolution is to add the reverse top-level domain .in-addr.arpa. For example, the PTR record of IP address 192.0.2.255 is stored in 255.2.0.192.in-addr.arpa.

    By default, a reverse domain name in the format of ecs-x-x-x-x.compute.hwclouds-dns.com is added to Huawei Cloud EIP. Resolve the PTR record of the EIP to obtain the default reverse domain name. You can also log in to the DNS console, choose PTR Records, and add a PTR record for the EIP. Then the default value will be overwritten.

  • Can I Transfer a Hosted Public Domain Name from One Account to Another Account?

    You are not allowed to transfer a public domain name hosted on the DNS service from one account to another account.

    If you have created a public zone and added record sets to the public zone, you cannot transfer the domain name from one account to another account.

    NOTE:If you want to transfer a hosted domain name to another account, delete the public zone created under the current account, create the same public zone under the new account, and add record sets to the public zone. This operation will interrupt domain name resolution. Exercise caution when performing this operation.

Documentation

API Reference

Before You Start

Getting Started

Routing Internet Traffic to a Website

Best Practices

Configuring Private Domain Names for ECSs