Previously, the subdomain A record was resolved to the github ip, and recently found that github pages could not be opened. Error:
Fastly error: unknown domain: xxxxxxxx. Please check that this domain has been added to a service.
Details: cache-xxxxxx
Solution:
Replace the ip with the following:
185.199.108.153
185.199.109.153
185.199.110.153
185.199.111.153
reference:
ps:sad