關於「Dig +trace」標籤，搜尋引擎有相關的訊息討論：

How does dig +trace actually work? - Super Usersuperuser.com › questions › how-does-dig-trace-actually-...Dig +trace doesn't display the whole delegation chain - Server Faultserverfault.com › questions › dig-trace-doesnt-display-the-...Dig +trace does not do a trace - Stack Ove