Sirius Systems (tcp/udp).
Quick facts
Description
Sirius Systems (tcp/udp).
Well-known ports are assigned by IANA to system-level services; binding them usually requires administrative privileges.
What uses port 166?
Port 166 primarily carries the s-net service. Some common well-known ports include:
Port ranges
| Range | Explanation |
|---|---|
| Well-known (0–1023) | Reserved for system services; binding usually requires admin privileges. |
| Registered (1024–49151) | Available to user applications; IANA registers common services here. |
| Dynamic / private (49152–65535) | Used for ephemeral client connections. |
Frequently asked questions
A port number is a transport-layer address used independently by TCP and UDP; s-net typically runs over its documented transport protocol.
Yes — most services let you configure the listening port, but make sure clients and firewalls are updated and you avoid conflicts.
Sources & standards
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This page provides original, human-reviewed information about network ports such as port 166, the Network Port Reference and related concepts. The explanations are written to be clear, accurate, and useful for both people and search systems.
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