DNS Cache Refresh is a service that refreshes cached DNS records on China Telecom DNS servers across all provinces in mainland China. You can use this service to proactively remove cached domain name information from China Telecom DNS servers, allowing domain name resolution results to take effect quickly.
Scenarios
The DNS Cache Refresh service is ideal for scenarios where domain name resolution results need to take effect immediately when DNS records change or during a switchover.
When a DNS record changes but the time-to-live (TTL) or the DNS cache on a China Telecom local DNS server has not expired, domain name resolution results take effect slowly. The DNS Cache Refresh service for China Telecom immediately clears the cache from China Telecom local DNS servers and retrieves the latest resolution results, enabling resolution results to take effect quickly on China Telecom DNS servers.
The DNS Cache Refresh service for China Telecom refreshes DNS records in the cache and makes resolution results take effect quickly on China Telecom local DNS servers. This service does not make domain name resolution results take effect across the entire network. DNS records of other Internet service providers (ISPs) or public DNS servers are not refreshed.
The DNS Cache Refresh service for China Telecom is not suitable for business regulatory penalties initiated by management departments in China.
Billing rules
This feature requires purchasing a package. The price is: USD 1,200 per refresh. If needed, you can purchase DNS Cache Refresh Resource Package for China Telecom.
Unsubscription
If the resource plan is not used, Alibaba Cloud provides a 5-day money-back guarantee. You can submit a ticket to cancel the subscription.
If the resource plan has been purchased for more than 5 days or has been used, you cannot cancel the subscription.
Procedure
Switch to the Cache Refresh tab.
Enter the target domain name and click Click To Refresh.
ImportantYou can enter only a domain name to refresh the cached DNS records that correspond to the domain name. Subdomains or wildcard domain names are not allowed. For example, you can enter example.com, www.example.com, or www.test.example.com.
In the Refresh Tasks section below, you can check whether the refresh is successful based on the Task Execution Status.
If you want to query the status of the resolution results on the DNS servers of China Telecom, click Detection of National Effective DNS Resolution Results.