在这篇文章中，我们将向您展示如何在Windows 11/10DNS缓存内容。DNS缓存是指在机器的操作系统或 Web 浏览器上临时存储有关先前DNS查找的信息。^(DNS)

如何查看 DNS 缓存内容

DNS缓存包含远程服务器名称列表和它们对应的 IP 地址（如果有）。此缓存中的条目来自尝试访问网站、命名 FTP 服务器和其他远程主机时发生^(Web)的DNS^(FTP)查找。^(DNS)Windows 使用此缓存来提高基于Web的应用程序的性能。

使用命令提示符

要查看DNC缓存内容，请在提升的 CMD 中执行以下命令：

ipconfig /displaydns

将显示结果。

• 记录名称^{(Record name)}是您查询DNS的名称，记录属于该名称。
• 记录类型^{(Record type)}是类型，显示为数字或名称。在DNS协议中，每个都有一个编号。
• Time To Live是缓存条目必须过期的时间（以秒为单位）。
• 数据长度^{(Data Length)}是以字节为单位的长度，例如 - IPv4地址是 4 个字节；IPv6为 16 个字节。
• ^(Section)DNS回复的^(DNS)部分是查询的实际答案，
• Additional包含查找实际答案可能需要的信息。
• CNAME是规范名称。

如果您希望导出结果，可以使用命令ipconfig /displaydns > dnscachecontents.txt将输出保存在文本文档dnscachecontents.txt中。

使用 PowerShell

如果您希望获得与可以轻松导出或保存在数据库中的DNS记录对象集合相同的信息，请在PowerShell中运行以下 cmdlet ：

Get-DnsClientCache

此命令将列出帮助^(Help)信息：

Help Get-DnsClientCache -full

如何清除 DNS 缓存

您可以在命令提示符下使用该命令刷新 DNS 缓存^{(flush DNS Cache)}：

ipconfig /flushdns

我们的免费软件FixWin for Windows，让您一键刷新DNS缓存等。

关闭或打开 DNS 缓存

要关闭特定会话的DNSnet stop dnscache 缓存，请键入并按 Enter。

要打开 DNS 缓存，请键入net start dnscache 并按 Enter。

当然，当您重新启动计算机时，无论如何都会打开 DNC 缓存。^{(Of course, when you restart the computer, the DNC caching will, in any case, be turned on.)}

禁用 DNS 缓存

如果出于某种原因您希望禁用DNS缓存，请在Start search中键入services并按^(services)Enter打开Services Manager。在这里找到DNS 客户端^{(DNS Client)}服务。

The DNS Client service (dnscache) caches Domain Name System (DNS) names and registers the full computer name for this computer. If the service is stopped, DNS names will continue to be resolved. However, the results of DNS name queries will not be cached and the computer’s name will not be registered. If the service is disabled, any services that explicitly depend on it will fail to start.

双击它以打开其属性^(Properties)框。此处将其启动类型从Manual更改为Disabled。如果禁用DNS 客户端^{(DNS Client)}服务，DNS 查找^{(DNS Lookups)} 可能需要更长时间。

您可能还会对这些资源感兴趣：^{(These resources may also interest you:)}

1. 如何在 Windows 中更改 DNS 设置^{(How to change DNS settings in Windows)}
2. 通过更改 DNS 设置管理 Web 浏览速度
3. 检查您的 DNS 设置是否已被盗用。

How to view DNS cache contents in Windows 11/10

In this post, we will show уou how to view the DNS cache contents in Windows 11/10. DNS cache refers to the temporary storage of information about preνious DNS loоkups on a machine’s OS or web browser.

How to view the DNS cache contents

The DNS cache contains a list of remote server names and the IP addresses (if any) they correspond to. Entries in this cache come from DNS lookups that happen when attempting to visit Web sites, named FTP servers, and other remote hosts. Windows uses this cache to improve the performance of Web-based applications.

Using Command Prompt

To view the DNC cache contents, execute the following command in an elevated CMD:

ipconfig /displaydns

The results will be displayed.

• Record name is the name you query DNS for, and the records belong to that name.
• Record type is the type, displayed as a number or name. In the DNS protocol, each has a number.
• Time To Live is the time in seconds after which the cache entry must expire.
• Data Length is the length in bytes, eg- An IPv4 address is 4 bytes; IPv6 is 16 bytes.
• Section of a DNS reply is the actual answer to the query,
• Additional contains information that will likely be needed to find the actual answer.
• CNAME is the canonical name.

If you wish to export the results, you can use the command ipconfig /displaydns > dnscachecontents.txt to save the output in the text document dnscachecontents.txt.

Using PowerShell

If you wish to get you the same information as a collection of DNS record objects which can easily be exported or saved in a database, run the following cmdlet in PowerShell:

Get-DnsClientCache

This command will list the Help information:

Help Get-DnsClientCache -full

How to clear the DNS cache

You can use the command to flush DNS Cache in the command prompt:

ipconfig /flushdns

Our freeware FixWin for Windows, let you flush the DNS cache, etc., in a click.

Turn Off or Turn On DNS Cache

To turn off DNS caching for a particular session, type net stop dnscache and hit Enter.

To turn on DNS caching, type net start dnscache and hit Enter.

Of course, when you restart the computer, the DNC caching will, in any case, be turned on.

Disable DNS Cache

If for some reason you wish to disable DNS caching, type services in Start search and hit Enter to open the Services Manager. Here locate the DNS Client service.

The DNS Client service (dnscache) caches Domain Name System (DNS) names and registers the full computer name for this computer. If the service is stopped, DNS names will continue to be resolved. However, the results of DNS name queries will not be cached and the computer’s name will not be registered. If the service is disabled, any services that explicitly depend on it will fail to start.

Double-click on it to open its Properties box. Here change its startup type from Manual to Disabled. If you disable the DNS Client service, DNS Lookups may take longer.

These resources may also interest you:

1. How to change DNS settings in Windows
2. Manage web browsing speed by changing DNS settings
3. Check if your DNS settings have been compromised.

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