About Port Lookup
Use this port lookup tool to map common port numbers to their typical network services and protocol roles.
Look up common TCP and UDP ports and their typical services.
Free Network Tool
Port Lookup
Look up common TCP and UDP ports and their typical services.
Examples
Enter a value above and run the lookup.
Related privacy and security resources
When relevant, this section may include related privacy and security resources that fit the topic of the page.
Explore lookup hubs
Privacy and security resources
Privacy and browsing protection resources
These resources may be useful for visitors who want more private browsing, encrypted traffic, and safer connections on public or untrusted networks, especially when they are already researching infrastructure, domain setup, or general internet safety.
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NordVPN
A practical option for visitors who want encrypted browsing, safer public Wi-Fi use, and a familiar cross-device experience.
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Surfshark
A useful option for visitors who want encrypted browsing with flexible device support and a straightforward setup experience.
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Port Lookup FAQ
What is a port lookup tool?
A port lookup tool maps a port number to its commonly associated network service or protocol.
Does a port number always mean one specific service?
No. Ports are conventions, and the same port can be used differently depending on the system or application.