高级选项（自定义有效载荷）
如果留空，系统将自动为已知端口（DNS、NTP、SNMP、Source Engine 等）注入标准化探测。
检查 UDP de-ffm-krk.check-host.eu:80
| 位置 | 结果 | 时间 | IP 地址 |
|---|---|---|---|
Albania, Tirana
|
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Australia, Sydney
|
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Bosnia and Herzegovina, Novi Travnik
|
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Bulgaria, Sofia
|
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Canada, Montreal
|
|||
Switzerland, Bern
|
|||
Chile, Santiago
|
|||
China, Hohhot
|
|||
Germany, Nuernberg
|
|||
|
Germany, Frankfurt am Main
|
|||
|
Germany, Frankfurt am Main
|
|||
|
Germany, Limburg
|
|||
Denmark, Glostrup Municipality
|
|||
Spain, Madrid
|
|||
Finland, Helsinki
|
|||
|
Finland, Helsinki
|
|||
France, Gravelines
|
|||
|
France, Paris
|
|||
United Kingdom, London
|
|||
Hong Kong, Hong Kong
|
|||
Croatia, Zagreb
|
|||
Hungary, Budapest
|
|||
Indonesia, Jakarta
|
|||
India, New Delhi
|
|||
Iceland, Reykjavik (Miðborg)
|
|||
Italy, Como
|
|||
Lithuania, Pilaite
|
|||
Latvia, Riga
|
|||
Moldova, Chisinau
|
|||
Netherlands, Amsterdam
|
|||
|
Netherlands, Amsterdam
|
|||
|
Netherlands, Amsterdam
|
|||
|
Netherlands, Eygelshoven
|
|||
Qatar, Doha
|
|||
Romania, Bacău
|
|||
|
Romania, Bucharest
|
|||
Serbia, Belgrade
|
|||
Singapore, Singapore
|
|||
Taiwan, Taipei
|
|||
United States, Miami
|
|||
|
United States, Dallas
|
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|
United States, Kansas City
|
Global UDP Port Checker & Payload Injector
UDP 端口检查器是一个诊断工具，用于确定网络设备上的特定通信端口是否正在接收无连接数据报。
Stateless Routing & Payload Injection
不同于建立正式连接握手的 TCP，UDP 仅仅是将数据发送到目标。因此，UDP 检查需要发送特定的“有效载荷”（如 DNS 查询或 ping 命令）以强制服务器发回响应。
Firewall & DDoS Mitigation Testing
该工具也可以与超过 60 秒的实时数据一起使用。为此，请使用重复按钮。
Gaming, VoIP, and Streaming Analysis
Real-time applications such as multiplayer game servers (Source Engine, Unreal), VoIP communications (SIP/RTP), and live video streaming rely almost exclusively on UDP to minimize latency. Dropped UDP packets manifest as voice jitter or game lag. Our Live UDP Check allows you to continuously monitor a target over a 60-second window, plotting latency spikes and packet loss on a real-time chart to diagnose transient network instability.