關於「DNS lookup」標籤，搜尋引擎有相關的訊息討論：

DNS Lookup - Check All DNS records for any domainwww.whatsmydns.net › dns-lookupTop DNS Lookup Tools - DNSimple Blogblog.dnsimple.com › 2015/02 › top-dns-lookup-toolsDNS Propagation Checker - Global DNS Testing Toolwww.whatsmydns.netHow does getaddrinfo() do DNS lookup? - Stack