Port 1355 sits in the registered ports range (1024-49151), officially assigned by IANA to a service called "Intuitive Edge." The contact name was Montgomery Zukowski. Beyond that, the trail goes cold.
What We Know (and Don't Know)
Here's what the official IANA registry tells us:
- Port number: 1355
- Service name: intuitive-edge
- Transport protocols: TCP and UDP
- Contact: Montgomery Zukowski
- Status: Registered
Here's what we don't know:
- What the service actually did
- Whether it was ever widely deployed
- If any software still uses this port
- Why it was registered in the first place
This is remarkably common. The registered ports range contains thousands of entries like this—ports claimed by companies or developers for specific services that either never launched, died quietly, or were used only internally and left no public documentation.
The Registered Ports Range
Port 1355 belongs to the registered ports range (1024-49151). Unlike well-known ports (0-1023) which require administrative privileges to bind to, registered ports can be used by ordinary user processes.
The registered range was created so developers could formally claim a port number for their service without needing special system privileges. You submit an application to IANA, they assign you a number, and that port is "yours" for that service.
The problem? There's no requirement to actually document what your service does, maintain it, or notify IANA if you stop using it. The result is a registry full of ghost ports.
Is Anything Listening?
To check if port 1355 is actually being used on your system:
On Linux or macOS:
On Windows:
If something is listening on port 1355, you'll see what process owns it. Chances are, you'll see nothing. This port is likely dormant on your machine, reserved in theory but unused in practice.
Why Ghost Ports Matter
The existence of ports like 1355 illustrates something important about how the Internet evolved. In the early days of TCP/IP, port numbers felt abundant—65,535 seemed like more than we'd ever need. Organizations and developers claimed ports freely, sometimes for services that never materialized.
Today, the registered range is cluttered with these assignments. Some ports are actively used by one vendor while a different vendor has them officially registered for something else. Some are claimed but never used. Some were used briefly in the 1990s and have been dormant for decades.
Port 1355 is a reminder that the Internet isn't just the services we use every day. It's also the layers of history underneath—the failed startups, the abandoned protocols, the software someone built with hope that nobody ended up needing.
The port number remains, reserved forever, a digital marker for something that may have mattered once, to someone.
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