DNS 查找或域名系统查找^{(Domain Name System Lookup)}可让您查找特定域名的 IP 地址。它还揭示了有关域名的许多其他详细信息。如果您需要经常进行查找，我将分享一些免费的 DNS 查找^{(free DNS lookup)}工具和在线服务。

免费DNS 查找工具^{(DNS Lookup Tools)}和在线^(Online)服务

1] Windows 10 的 DNS 查找命令^{(1] DNS lookup commands for Windows 10)}

Windows有一个内置的命令行工具——nslookup。它可用于诊断域名系统^{(Domain Name System)}( DNS ) 基础设施。它需要在您的计算机上安装TCP/IP才能工作。这里唯一的缺点是它不像其他工具那样广泛。在 microsoft.com^{(here on microsoft.come)}上阅读有关如何使用它的更多信息。如果您觉得这有点困难，Nirsoft有一个用于DNS查找的GUI工具。

2] NetCrunch 工具^{(2] NetCrunch Tools)}

NetCrunch 是一款提供WhoIS、DNS Audit、DNS Lookup等功能的软件。您可以将其用于DNS查找网站并识别DNS​​ 设置错误。该工具^{(The tool)}对于本地网络查询也很方便。

3] Whois DNS 查询^{(3] Whois DNS Lookup)}

它是一个在线服务^{(online service)}，提供查询的DNS记录，包括 A、AAAA、CNAME、MX、NS、SOA和TXT。您可以进一步执行 IP 查找，检查RBL（实时黑洞^(Blackhole) 列表^(Lists)）并执行Traceroute。

4] Mx工具箱^{(4] MxToolbox)}

它是另一种在线服务，但仅用于检查与^{(checking the status)}电子邮件相关的DNS记录的状态，即 MX Records。它还可以检查域或 IP 是否已被列入发送垃圾邮件的黑名单。对于每条记录，您都可以选择执行黑名单^(Blacklist)检查和SMTP测试。该记录通过各种数据库进行扫描。

5] WhatsmyDNS

如果您要移动服务器，WhatsmyDNS 会^(WhatsmyDNS) 为其当前 IP 地址和DNS记录信息提供^(offers)实时DNS检查。^(DNS)它可以让您清楚地了解传播完成之前的世界哪个部分。他们在世界几乎每个地方都有服务器，结果是从任何地方生成并共享的。

6] DNS查询^{(6] DNS Query)}

这个在线工具可以执行很多^{(lot of queries)}DNS查询，包括 ping、traceroute、whois 查询、遍历、ping、反向 DNS 查询^{(Reverse DNS Query)}、P Whois 查询^{(P Whois Query)}等等。

虽然我们列出了一些最好的，但互联网上有很多免费的DNS查找工具。^(DNS)他们还提供监控工具，如果您打算在您的域上保留标签，这些工具会很有用。但是，这些服务是有偿的。您必须根据自己的需要进行选择。

阅读下一篇^{(Read next)}：免费动态 DNS 服务^{(Free Dynamic DNS services)}。

Free DNS Lookup Tools & Online services

DNS Lookup or Domain Name System Lookup lets you find the IP address of a specific domain name. It also reveals a lot of other details about the domain name. If you need to perform lookup often, I am sharing a few free DNS lookup tools & online services.

Free DNS Lookup Tools & Online services

1] DNS lookup commands for Windows 10

Windows has an inbuilt command line tool – nslookup. It can be used to diagnose the Domain Name System (DNS) infrastructure. It needs TCP/IP installed on your computer to work. The only drawback here is that its not as extensive as other tools. Read more on how to use it here on microsoft.come. If you find this bit difficult, Nirsoft has a GUI tool for DNS lookup.

2] NetCrunch Tools

NetCrunch a software that offers WhoIS, DNS Audit, DNS Lookup, and much more. You can use it to for DNS lookup websites and identify DNS settings errors. The tool is also handy for local networking queries.

3] Whois DNS Lookup

It’s an online service that offers DNS records queried include A, AAAA, CNAME, MX, NS, SOA, and TXT. You can further perform an IP lookup, check the RBL (Real-time Blackhole Lists) and do a Traceroute.

4] MxToolbox

It’s another online service, but only for checking the status of email related DNS records, i.e., MX Records. It can also check if a domain or the IP has been blacklisted from sending spam emails. For every record, you have the option to perform a Blacklist check and SMTP test. The record is scanned through various databases.

5] WhatsmyDNS

If you are moving servers, WhatsmyDNS offers live DNS check for its current IP address and DNS record information. It gives you a clear idea till which part of the world the propagation is complete.  They have servers on almost every part of the world, and the results are generated from everywhere and shared.

6] DNS Query

This online tool can perform a lot of queries for DNS including ping, traceroute, whois lookup, traversal, ping, Reverse DNS Query, P Whois Query and more.

While we have listed some of the best ones, there are a lot of free DNS lookup tools available on the internet. They also offer monitoring tools which can be useful if you plan to keep a tab on your domain. However, those services are paid.  You will have to choose based on your needs.

Read next: Free Dynamic DNS services.

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