Port 1284 sits in the registered ports range with an official assignment, but almost nothing else. According to IANA records, it was registered on October 19, 2009 for a service called "IEE-QFX."1 And that's essentially where the trail goes cold.
What We Know
Port Number: 1284
Protocol: TCP and UDP
Service Name: IEE-QFX
Registration Date: October 19, 2009
Documentation: Virtually nonexistent
Port 1284 falls in the registered ports range (1024-49151)—the middle tier of the port system where organizations can request specific port assignments from IANA for their protocols and services.
What We Don't Know
What does IEE-QFX stand for? What protocol runs on this port? Who requested the registration? What problem was it meant to solve?
The Internet contains almost no answers. No RFCs. No protocol specifications. No vendor documentation. No Stack Overflow questions from developers trying to implement it. Just a name in the registry and a registration date.
The Registered Ports Range
Port 1284 belongs to the registered ports range, which works differently than well-known ports (0-1023):
- Anyone can apply — Organizations can request specific port numbers from IANA
- First-come, first-served — Assignments are generally granted if the port isn't already taken
- No guarantee of use — Just because a port is registered doesn't mean anyone actually uses it
- Limited enforcement — Nothing technically prevents you from running a different service on a registered port
This creates an interesting dynamic. The registered ports range is full of officially assigned numbers that may or may not correspond to services anyone actually runs.
Ghost Ports
Port 1284 is what you might call a ghost port—officially registered, technically assigned, but functionally invisible. Someone cared enough to register it. Someone had plans. But whatever IEE-QFX was meant to be, it either never launched, never gained adoption, or operates in such a specialized niche that it left no public trace.
This happens more often than you might think. The registry is full of ports that were registered with hope and abandoned in practice.
Why This Matters
Ghost ports like 1284 teach us something about the port system:
The registry is aspirational. It records what people intended to build, not just what they succeeded in building. Every registered port represents someone's plan, even if that plan never materialized.
Assignment ≠ usage. Having an official port number doesn't guarantee anyone will use it, recognize it, or even know it exists. The technical infrastructure (the registry) can exist completely independently of the social infrastructure (actual adoption).
History has gaps. Not every port tells a story we can still hear. Some protocols launch with fanfare and RFCs. Others get registered quietly and disappear without a trace. Port 1284 is the latter.
How to Check What's on Port 1284
If you want to see if anything is actually listening on port 1284 on your system:
On Linux/macOS:
On Windows:
Most likely, you'll find nothing. But if you do find something listening on this port, you've discovered one of the rare instances where IEE-QFX might actually be running—or more likely, where some other application has claimed this obscure port number for its own purposes.
The Honest Truth
We don't know what IEE-QFX is. We probably never will. Port 1284 is registered, documented in IANA's records, and apparently unused by anything widespread enough to leave a public footprint.
This is the reality of the port system. Not every number has a famous protocol behind it. Not every registration becomes a standard. Some ports are just names in a database—evidence that someone, somewhere, in 2009, had an idea that never quite took off.
Frequently Asked Questions
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