[{"data":1,"prerenderedAt":58},["ShallowReactive",2],{"$f2o7w64v3671k5":3},{"title":4,"seoTitle":5,"description":6,"route":7,"kind":8,"toolKey":9,"intro":10,"indexable":11,"sections":12,"related":53},"如何使用 nslookup 指令","如何使用 nslookup 指令 | nslookup.online","Windows 與 Linux 的 nslookup 用法，包含 A、MX、TXT、PTR、指定解析器及錯誤解讀。","\u002Fzh-tw\u002Fguides\u002Fnslookup-command\u002F","guide",null,"在終端機向指定解析器提出明確 DNS 查詢。",true,[13,20,27,34,41,47],{"id":14,"title":15,"paragraphs":16,"code":19},"first-query","發起明確查詢",[17,18],"Windows 終端機可用內建 nslookup；Linux 依發行版決定是否預裝，通常由 DNS 工具套件提供。依官方套件指引安裝，勿用未知安裝器。","僅給名稱通常使用系統解析器查位址。網頁可能用不同解析器，差異不必然是程式錯誤。","nslookup example.com\nnslookup example.com 8.8.8.8",{"id":21,"title":22,"paragraphs":23,"code":26},"record-type","選擇記錄類型",[24,25],"type 可查 MX、TXT、NS、AAAA。名稱很重要：_dmarc.example.com 與 example.com 是不同查詢。","ANY 不可靠地列出全部記錄，伺服器可能最少回覆或拒絕；應分別查詢各類並保留狀態。","nslookup -type=MX example.com\nnslookup -type=TXT _dmarc.example.com\nnslookup -type=AAAA example.com\nnslookup -type=NS example.com",{"id":28,"title":29,"paragraphs":30,"code":33},"reverse","反向查詢",[31,32],"IP 輸入查 PTR。IPv4 用 in-addr.arpa 倒序數字，IPv6 用 ip6.arpa 倒序十六進位位元；不是所有網站清單。","無 PTR 不代表離線。正反向可由不同方管理，不會自動互相更新。","nslookup 1.1.1.1\nnslookup -type=PTR 1.1.1.1.in-addr.arpa",{"id":35,"title":36,"paragraphs":37,"code":40},"interactive","使用互動模式",[38,39],"不帶名稱啟動可進提示字元，切換 server 與 type 後查詢，完成用 exit。這些指令不修改記錄。","非權威應答通常來自遞迴解析器或快取，不自動表示不可信。","nslookup\n> server 1.1.1.1\n> set type=TXT\n> example.com\n> exit",{"id":42,"title":43,"paragraphs":44},"errors","區分 DNS 與傳輸錯誤",[45,46],"NXDOMAIN 是名稱不存在，NOERROR 無資料則不同。SERVFAIL 可涉及驗證或上游故障；逾時是未完成。","對照網站應匹配名稱、類型、解析器及時間。網站用 HTTPS，終端機可能用 UDP\u002FTCP，耗時不可直接比較。",{"id":48,"title":49,"paragraphs":50},"next","記錄真實觀察",[51,52],"保存名稱、類型、答案、TTL、解析器與時間。只複製 IP 可能掩蓋名稱差異或舊快取。","正式故障應保留已知良好設定並使用提供商權威工具。本站與 nslookup 都不代改 DNS。",[54,55,56,57],"\u002F","\u002Fmx-lookup\u002F","\u002Ftxt-lookup\u002F","\u002Freverse-dns-lookup\u002F",1792661399424]