Can a Cloudflare DNS record ID be changed or modified after creation?

No, a Cloudflare DNS record ID itself cannot be changed or modified. It is an immutable, internal identifier assigned by Cloudflare when the record is created. If you wish to change a DNS record's attributes (like its content, name, or TTL), you use its existing record ID in an update API call. If you delete a record, its ID is retired, and creating a new record, even with the same details, will result in a completely new and different record ID.