DNS Jumper（DNS 切换工具）

中文

DNS Jumper 是一款适用于 Windows 的免费便携 DNS 切换工具，可从预设列表选择解析服务器、添加自定义地址并比较解析耗时。本文说明 v2.3 的更新、官网下载与解压步骤、恢复 ISP 默认 DNS 的方法，以及 IPv4/IPv6、隐私和网络故障排查要点，帮助你在修改网络设置前核对来源、版本与风险。

DNS Jumper 是什么：Windows DNS 切换工具

DNS（域名系统）负责把网站域名解析成 IP 地址。DNS Jumper 为 Windows 网卡选择解析服务器，并可对所选服务器进行解析耗时测试，适合希望更换运营商默认 DNS 或临时验证解析问题的用户。

它不是 VPN、代理或防火墙，也不会加密网页流量、提高带宽或保证更低延迟。更改 DNS 会影响系统的域名解析；企业内网、校园网、VPN、家长控制和本地服务可能依赖原解析器。修改前先记录当前设置，并确认你有权更改这台电脑的网络配置。

主要功能与选择 DNS 时的注意事项

Sordum 的 DNS Jumper v2.3 页面介绍了预设 DNS 列表、自定义服务器、IPv4/IPv6 选项和解析速度测试。较早版本新增的 Turbo Resolve 可在启动时应用最快 DNS；自动选择结果取决于测试域名、线路和当时网络状态，不能视作全网速度排名。

切换前检查当前选中的网络适配器；官网的 v2.3 更新记录专门修复过 DNS 改动后适配器显示会自动变化的问题。公共 DNS 的过滤、日志保留和隐私政策由其运营者决定，选择前请核对服务提供方，不要盲用来源不明的服务器清单。

DNS Jumper 安装与首次设置步骤

DNS Jumper 被发布者标为 freeware 和 portable，官方页提供的是压缩包而非传统安装向导。建议从 Sordum 产品页进入下载区，不要使用榜单表格中的旧镜像地址。

1. 打开 Sordum 官方产品页，核对页面名称为 DNS Jumper v2.3。
2. 下载官方 ZIP 并解压到自己可管理的文件夹。
3. 解压后检查 DnsJumper.exe；可将文件 SHA-256 与官网公布值比对。
4. 启动程序并确认目标网络适配器，再选择可信 DNS 服务器。
5. 需要同时更改 IPv6 时勾选 IPv6，然后选择 Apply DNS；若 Windows 拒绝写入，先确认下载来源并按需以管理员身份运行。

如何恢复默认 DNS 与排查打不开网页

官方说明给出两种恢复方式：点击 Quick Configuration（星形图标）并选择默认项，或在 Choose a DNS Server 菜单中选 Default（或 Restore）DNS，再点击 Apply DNS。若之前更改了 IPv6，也要勾选 IPv6 并单独应用对应设置。

应用后仍无法上网时，先检查是否选错网卡，再确认 VPN、代理、安全软件或路由器没有覆盖设置；可在 Windows 命令提示符运行 ipconfig /flushdns 清除本机缓存后重试。若公司内网域名、打印机或 NAS 无法解析，恢复原 DNS 并联系网络管理员。

版本与更新日志：DNS Jumper v2.3

发布者产品页列出的当前版本为 v2.3，软件更新说明日期为 2023-11-09。该条目的修复内容是：在部分系统上，更改 DNS 后“Selected Network Adapter”区域会自动切换。页面未列出更新日期之后的逐项版本记录；本文不推测未公布的功能。

发布页公布 DnsJumper.exe 的 SHA-256：6fe6bac71a82a58abcb06b0df4a836116543302efe6e076402fa518dfa455baa。该值用于将解压出的可执行文件与发布者记录比对；校验值匹配不等于独立恶意软件检测，也不代表任何 DNS 服务的隐私保证。

常见问题 FAQ：下载、安全与网络故障

DNS Jumper 安全吗？ 只能确认来源与文件是否匹配发布者公布的哈希；这不是无恶意软件或“绝对安全”的证明。请从官方页获取文件，并查看所选 DNS 服务商的隐私说明。

DNS Jumper 是 VPN 吗？ 不是。切换解析器不会加密应用流量，也不会隐藏公网 IP。

为什么 Apply DNS 失败？ 检查适配器、IPv4/IPv6 选项和 Windows 权限；被 VPN 或组织策略管理的设备应先咨询管理员。

如何完整卸载？ 它是便携程序，退出后删除解压目录即可；若要撤销网络改动，先在程序里恢复 Default/Restore DNS。

English

DNS Jumper v2.3 is a free, portable Windows DNS changer. Learn setup, resolver selection, IPv4/IPv6 restore, privacy limits, and the official update notes.

What DNS Jumper does on Windows

The Domain Name System resolves a website name to an IP address. DNS Jumper lets a Windows network adapter use a selected resolver and can measure lookup time, which is useful when testing a different DNS provider or investigating a name-resolution issue.

It is not a VPN, proxy, firewall, bandwidth upgrade, or latency guarantee. Changing DNS affects name lookups across the system. Company networks, school networks, VPNs, parental controls, and local services may depend on the current resolver, so record the existing setting and confirm you are allowed to change it.

Features and choosing a resolver

Sordum's DNS Jumper v2.3 page describes a preset DNS list, custom server entries, IPv4/IPv6 options, and resolution-time tests. Turbo Resolve, introduced in an earlier release, can apply the fastest tested DNS at startup; its result depends on the test domain, route, and current network conditions, so it is not a general internet-speed ranking.

Check the selected network adapter before applying a change. The v2.3 notes address a case where that section could change automatically after DNS was changed. Filtering, query logging, and privacy depend on the resolver operator; verify the provider instead of trusting an unknown server list.

DNS Jumper installation and first setup

The publisher labels DNS Jumper freeware and portable; the official page presents an archive rather than a conventional installer. Start from the Sordum product page instead of an old mirror URL copied from a ranking sheet.

1. Open the official Sordum product page and confirm it says DNS Jumper v2.3.
2. Download the official ZIP and extract it to a folder you control.
3. Check the extracted DnsJumper.exe; compare its SHA-256 with the value published on the product page if needed.
4. Launch the program, verify the target network adapter, and select a DNS provider you trust.
5. If you also need to change IPv6 DNS, tick IPv6 before Apply DNS. If Windows refuses the change, verify the source and use administrator rights only when required.

Restore DNS and troubleshoot connection problems

The publisher gives two restore routes: choose an entry from Quick Configuration (the star icon), or select Default (or Restore) DNS from Choose a DNS Server and click Apply DNS. If you changed IPv6, tick IPv6 and apply that setting as well.

If sites still fail to resolve, check that the right adapter is selected and that a VPN, proxy, security product, or router is not overriding the setting. You can run ipconfig /flushdns in Windows Command Prompt to clear the local cache and retry. If a work intranet, printer, or NAS name stops resolving, restore the previous DNS and contact the network administrator.

Version and update notes: DNS Jumper v2.3

The publisher's product listing identifies v2.3 and dates its software update note to 9 November 2023. The listed fix addresses the Selected Network Adapter section changing automatically on some systems after DNS was changed. The page does not provide itemized later-version notes, so this guide does not infer undocumented features.

The page publishes this SHA-256 for DnsJumper.exe: 6fe6bac71a82a58abcb06b0df4a836116543302efe6e076402fa518dfa455baa. It can help compare the extracted executable with the publisher's record; a matching hash is not an independent malware scan and says nothing about a resolver's privacy practices.

FAQ: download, security, and DNS issues

Is DNS Jumper safe? You can check the source and compare the file with the publisher's hash, but neither proves that a file is malware-free. Use the official page and review the chosen DNS provider's privacy policy.

Is DNS Jumper a VPN? No. Changing resolvers does not encrypt app traffic or hide your public IP.

Why does Apply DNS fail? Check the adapter, IPv4/IPv6 option, Windows permission, and any VPN or organization policy. Ask your administrator before changing a managed device.

How do I uninstall it? It is portable: close the program and remove its extracted folder. Restore Default/Restore DNS first if you want to undo network changes.