Networking & IT ToolsPrivate by design
Port Number Lookup
Search or browse common well-known TCP/UDP port numbers and the services that use them.
How to use this tool
- 1Search by port number or service name.
- 2Browse the matching results.
Frequently asked questions
What's the difference between TCP and UDP?+
TCP is connection-oriented and guarantees delivery order (used for HTTP, SSH, etc.); UDP is connectionless and faster but doesn't guarantee delivery (used for DNS, streaming, etc.).
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