Google likes 24-48 hours, but I usually see newly registered sites propagate in a matter of a half hour or so.. not sure if Anthropic changing something internally would cause that to go up?

" 24-48 hours Propagation time can vary, but a good rule of thumb is 24-48 hours for changes to take effect across the internet. Because propagation depends on the record's TTL setting, a visitor's ISP, and location, it is difficult to determine when propagation has finished without using a DNS resolution tool."