Product Advantages
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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.
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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.
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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.
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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.
Website Domain Names
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.
After a recipient server receives an email, it checks whether the IP address and domain name of the sender server are trustworthy and determines whether the email is spam. If the recipient server cannot obtain the domain name mapped to the IP address of the sender server, it concludes that the email is sent by a malicious host and rejects it. It is necessary to configure pointer records (PTR) to point the IP addresses of your email servers to domain names.
In the following figure, an ECS serves as an email server, and a PTR record is configured to map the EIP of the ECS to the domain name configured for accessing the email server.
Figure 1 Reverse resolution
NOTE: Figure 1 shows only the process for reverse resolution. Information about how an email server checks the credibility of the sender's IP address and whether domain name is available on the Internet is not provided here.
If no PTR records are configured, the recipient server will treat emails from the email server as spam or malicious and discard them.
See Translating an IP Address to a Domain Name for detailed operations.
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. However, in cross-network or cross-region access, this would lead to an increase in network latency and poor user experience.
With configurable resolution lines, you can specify different IP addresses for the same domain name based on the networks or geographic locations.
You can create more fine-grained resolution lines based on source IP addresses.
Huawei Cloud DNS supports the following types of resolution lines:
NOTE: Resolution lines are not available for private zones and PTR records.
SDK Overview
This document lists the SDK versions provided by Domain Name Service (DNS) and the addresses for obtaining the latest SDK versions.
Programming Language
GitHub Address
Reference