Port 2642: Tragic — A Named Ghost

What This Port Is

Port 2642 sits in the registered ports range — the stretch of port numbers from 1024 to 49151 that IANA maintains as a registry of claimed services. Unlike the well-known ports below 1024, registered ports don't require privileged access to bind, and they don't carry the same weight of protocol standardization. But they do carry names.

The name for port 2642 is Tragic.

The IANA registry lists it for both TCP and UDP, assigned by someone named Stu Mark. There is no RFC. There is no documentation. There is no software anyone can point to. Just the name, the number, and silence.¹

The Registered Port Range

The registered ports (1024–49151) exist because the Internet needed a middle ground. Below 1024, you have the well-known ports — HTTP, SSH, SMTP — governed tightly and mostly stable since the early days of the ARPANET. Above 49151, you have ephemeral ports, assigned on the fly for short-lived connections and returned to the pool when finished.

In the middle, the registered range was supposed to be a directory: if your application needed a consistent, findable port, you'd apply to IANA, explain your service, and get a number. Thousands of organizations did exactly this through the 1990s and early 2000s.

The result is a registry full of services that thrived, services that quietly died, and a surprising number of entries like port 2642 — registered, named, and never heard from again. Ghost ports, holding their numbers indefinitely while the applications they were meant to serve never shipped, or shipped briefly and vanished.

Security Note

Some older security databases flagged port 2642 as having historical associations with malware — a common notation applied to any obscure port that showed up in suspicious traffic logs. This doesn't mean the port is inherently dangerous. Any unrecognized open port warrants scrutiny, but the port number itself is neutral.

What to Do If This Port Is Open on Your System

If you see port 2642 listening, something opened it — and it isn't the "Tragic" service. Find out what it actually is.

On Linux or macOS:

# Show what process is listening on port 2642
sudo lsof -i :2642

# Alternative using ss (Linux)
sudo ss -tlnp sport = :2642

On Windows:

# Show listening ports with process IDs
netstat -aon | findstr :2642

# Map the PID to a process name
tasklist | findstr <PID>

The answer is almost certainly a legitimate application that chose this port for its own reasons, a development server, or a misconfiguration. But verify it. An open port you can't explain is a question worth answering.