Is this tool free to use?

Yes, this tool is completely free to use. No registration, subscription, or payment is required. All processing happens directly in your browser.

Does this tool upload data to a server?

No. All processing happens locally in your browser using JavaScript. Your data never leaves your device, ensuring complete privacy and security. The tool works even when offline.

Does this tool work on mobile devices?

Yes, this tool is fully responsive and works on all modern browsers including Chrome, Safari, Firefox, and Edge on desktop, tablet, and mobile devices.

Is an internet connection required to use this tool?

No internet connection is required after the page loads. Since all processing happens in your browser, you can use this tool offline once the page is loaded.

Is there a file size limit?

There is no server-side file size limit since files are processed locally in your browser. The only limitation is your device's memory (RAM). For very large files, we recommend processing them in smaller chunks.

🔍 DNS Lookup

Free online DNS lookup tool. Query DNS records for any domain including A, AAAA, CNAME, MX, NS, TXT, SOA and SRV records. Supports multiple global DNS servers and historical resolution data. Great for diagnosing DNS issues.

Domain

Record Type

DNS Server

🔍 Results

Enter a domain and click Lookup

💡 Tip: Uses public DNS over HTTPS (DoH). No query data is stored.

How to Use the DNS Lookup

Process your images with the DNS Lookup in three steps:

Upload Your Image
Click the upload area or drag and drop an image file. The tool supports common formats including PNG, JPG, GIF, SVG, and WebP. Your image stays on your device at all times.
Configure Image Settings
Adjust image processing options such as dimensions, quality, filters, or effects. Preview changes in real time before applying them.
Download the Processed Image
Once you are satisfied with the result, click "Download" to save the processed image. The tool never uploads your images to any server.

FAQ

DNS查询是怎么工作的？

DNS查询通过向DNS服务器发送请求来查找域名对应的IP地址或其他记录。查询过程可能经过递归解析器、根DNS服务器、顶级域服务器和权威DNS服务器等多个环节。本工具使用浏览器Fetch API通过公共DNS over HTTPS (DoH)服务进行查询。

什么是A记录和AAAA记录？

A记录(Address)将域名映射到IPv4地址（如192.168.1.1），AAAA记录将域名映射到IPv6地址（如2001:db8::1）。大多数网站同时拥有A和AAAA记录以支持IPv4和IPv6访问。

MX记录是什么？

MX(Mail Exchange)记录指定接收该域名电子邮件的邮件服务器地址。每个MX记录有优先级值，数值越小优先级越高。当邮件服务器不可用时，邮件会发送到次高优先级的服务器。

查询结果是否实时？

查询结果来自公共DNS服务器，通常是实时的。但由于DNS缓存机制，某些记录可能有短暂的延迟。TTL(Time To Live)值表示记录在缓存中的有效时间，TTL越短，记录的更新传播越快。