🧭 DNS 查询（A / MX / TXT / CNAME 记录）DNS Lookup — A, AAAA, MX, TXT, CNAME, NS

输入域名即可查询 A、AAAA、CNAME、MX、TXT、NS、SOA、CAA、SRV、HTTPS 等解析记录和 TTL，或一次查询全部常用类型；输入 IP 可做 PTR 反向解析。通过 Cloudflare 1.1.1.1 或 Google 8.8.8.8 的 DNS-over-HTTPS 由浏览器直接查询，适合检查域名解析、邮箱 MX/SPF 和证书 CAA 配置。Look up A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, SRV and HTTPS records with TTLs — or all common types at once — and PTR for IPs. Your browser queries Cloudflare 1.1.1.1 or Google 8.8.8.8 over DNS-over-HTTPS directly; handy for checking DNS changes, mail MX/SPF and CAA records.

🌐 联网说明：点击“查询”时，你的浏览器会把域名和记录类型直接发送到所选的公开 DNS-over-HTTPS 服务（Cloudflare 1.1.1.1 或 Google 8.8.8.8）获取结果，不经过本站服务器，本站不保存任何查询。Network notice: pressing Look up makes your browser send the domain and record type directly to the public DNS-over-HTTPS resolver you choose (Cloudflare 1.1.1.1 or Google 8.8.8.8). Nothing passes through or is stored by this site.

记录类型Type 解析服务Resolver

输入 IP 地址并选择 PTR 可做反向解析。结果来自公共递归解析服务，可能与你本地网络（运营商 DNS、hosts 文件）看到的不同；刚修改的记录要等 TTL 过期后才会更新。Enter an IP address with PTR for a reverse lookup. Results come from a public recursive resolver and may differ from your local network (ISP DNS, hosts file); recently changed records update after their TTL expires.

使用说明与常见问题How-to & FAQ

「DNS 查询（A / MX / TXT / CNAME 记录）」是什么？What is the DNS Lookup — A, AAAA, MX, TXT, CNAME, NS?

如何使用「DNS 查询（A / MX / TXT / CNAME 记录）」？How do I use the DNS Lookup — A, AAAA, MX, TXT, CNAME, NS?

输入域名（也可以直接粘贴网址），选择记录类型和解析服务，点“查询”。对比两个解析服务的结果，可以判断新改的记录是否已经生效。Enter a domain (or paste a URL), pick a record type and resolver, and press Look up. Comparing both resolvers tells you whether a fresh change has propagated.

为什么查到的和我电脑上不一样？Why do results differ from my computer?

这里查询的是公共递归解析服务，你的电脑可能使用运营商 DNS 或 hosts 文件，并且有缓存。修改记录后要等原记录的 TTL 过期才会全面生效。This queries a public resolver; your computer may use your ISP’s DNS or a hosts file and has caches. Changes take effect everywhere after the old TTL expires.

怎么查邮箱的 SPF 记录？How do I check SPF?

选择 TXT 类型查询域名，以 v=spf1 开头的那条就是 SPF；DMARC 记录请查询 _dmarc.你的域名的 TXT。Query TXT for the domain; the entry starting with v=spf1 is SPF. For DMARC, query TXT on _dmarc.yourdomain.

「DNS 查询（A / MX / TXT / CNAME 记录）」免费吗？文件会上传吗？Is the DNS Lookup — A, AAAA, MX, TXT, CNAME, NS free? Are my files uploaded?

「DNS 查询（A / MX / TXT / CNAME 记录）」完全免费，无需注册。点击“查询”时，你的浏览器会把域名和记录类型直接发送到你选择的公开 DNS-over-HTTPS 服务（Cloudflare 或 Google）；不经过本站服务器，本站不接收也不保存任何查询。The DNS Lookup — A, AAAA, MX, TXT, CNAME, NS is free with no sign-up. When you press Look up, your browser sends the domain and record type directly to the public DNS-over-HTTPS resolver you pick (Cloudflare or Google); nothing passes through or is stored by this site.