Port 2547: vytalvaultvsmp — A Name Without a Story

What Range This Port Belongs To

Port 2547 is a registered port — part of the range from 1024 to 49151. IANA manages this range, and anyone can apply to register a service name against a port number. Registration requires a name and contact, but not a working product.

That distinction matters here.

The Registered Service: vytalvaultvsmp

IANA lists port 2547 (both TCP and UDP) under the service name vytalvaultvsmp.¹ The name appears to compress three things — "vytal," "vault," and "vsmp" — but IANA's entry includes no description, no RFC reference, and no contact information. The registration exists in the database the way a reserved parking space exists in an empty lot.

There is a healthcare asset-tracking company called Vytal.² Whether this registration was theirs, and whether "vsmp" referred to some internal protocol, is unknown. The registration is a dead end.

Any Known Unofficial Uses

Nothing notable. Port 2547 does not appear in threat intelligence databases as a known malware channel, nor in any open-source software as a default listener. It surfaces occasionally in port scan databases, but only because those databases index everything — not because anything interesting was found there.

If you're seeing traffic on port 2547 on your network, it's almost certainly an application that picked the port arbitrarily, not something referencing the IANA entry.

How to Check What's Listening on This Port

On Linux or macOS:

ss -tlnp | grep 2547
# or
lsof -i :2547

On Windows:

netstat -ano | findstr :2547

The process ID in the output can be matched against Task Manager or tasklist to identify the application.

Why Unassigned (and Ghost) Ports Matter

The registered port range exists to prevent collisions — two applications accidentally choosing the same port and fighting over it. When someone registers a service name, they're planting a flag that says "this is ours."

But registration without documentation creates a different problem: the flag stands, but nobody knows what it marks. Port 2547's entry is indistinguishable in structure from a fully specified protocol like port 443 or port 22. It just happens to be empty.

This is not unusual. The IANA registry contains hundreds of entries like it — names registered during a product's early development, or by a company that later pivoted, or simply never followed through. The Internet's namespace has its share of abandoned claims.