The ISP DNS Cache Refresh for China Telecom is a pay-per-use service that clears cached domain information from China Telecom's DNS servers throughout China, thereby speeding up DNS resolution.
Use cases
Use this feature when you need DNS changes to take effect quickly, such as after updating a DNS record or during a disaster recovery failover.
When you change a DNS record, propagation can be slowed by factors like the Time-to-Live (TTL) value and unexpired ISP DNS caches. The China Telecom DNS cache flush instantly clears the local cache on its DNS servers. This forces the servers to fetch the latest DNS information, which speeds up DNS resolution throughout the China Telecom network.
Flushing the DNS cache for China Telecom does not guarantee that your domain updates will propagate across the entire internet. This service only clears the cache and speeds up propagation on China Telecom's DNS servers. You cannot use this service to flush the cache of other ISPs or public DNS.
The China Telecom DNS cache flush service cannot be used for domains that are subject to regulatory penalties from Chinese administrative authorities.
Billing
This feature requires a Resource Plan, which costs 1,200 USD per flush. To purchase one, go to the DNS Cache Flush for China Telecom page.
Refund policy
Unused Resource Plans are eligible for a no-questions-asked refund within 5 days of purchase. To request a refund, go to the Expenses and Costs console.
You cannot receive a refund if the Resource Plan was purchased more than 5 days ago or has been used.
Procedure
Switch to the DNS Cache Refresh tab.
Enter the target domain name and click Click to Refresh.
ImportantThe flush operation targets only the exact domain name you enter. Subdomain and wildcard domains are not supported. For example, you can enter example.com, www.example.com, or www.test.example.com.
In the Refresh Tasks section, check the Task Status column to verify if the flush was successful.