Port 2610: VersaTek — Assigned, Forgotten, Empty

Port 2610 sits in the registered port range (1024–49151), the middle tier of the port numbering system. IANA lists it as assigned to a service called VersaTek on both TCP and UDP — but VersaTek never made it into the wider world. No documentation, no active deployments, no RFC. Just a name in a registry.

In practice, port 2610 is empty.

The Registered Port Range

Ports 1024 through 49151 are called registered ports. Below them sit the well-known ports (0–1023), where the Internet's core protocols live: HTTP on 80, HTTPS on 443, SSH on 22. Above them are the ephemeral ports (49152–65535), handed out temporarily to client connections and then returned to the pool.

Registered ports occupy the middle ground. Any organization can request one from IANA, and thousands have. Some became critical infrastructure. Others — like VersaTek — claimed a number and then quietly disappeared. The registry doesn't expire assignments, so the name persists even when the software is gone.

What "Assigned but Abandoned" Means for You

When you see traffic on port 2610, it isn't VersaTek. It's something else — a misconfigured application, a developer who needed a port number and picked one that seemed available, or a scanner probing for anything that answers.

SANS Internet Storm Center records regular scanning activity on 2610, the same background noise that sweeps across most registered ports. No specific malware family has claimed it as a command-and-control channel, but its emptiness makes it convenient for anyone who needs a quiet port.¹

Checking What's on Port 2610

If you see port 2610 in use on your system or network, the service running there is whatever put it there — not VersaTek.

On Linux or macOS:

# See what process is listening
sudo ss -tlnp | grep 2610
# or
sudo lsof -i :2610

On Windows:

netstat -ano | findstr :2610

The process ID in the output tells you exactly what claimed the port.

In a packet capture:

tcpdump -i any port 2610

If you're seeing unexpected inbound traffic on 2610, your firewall should be blocking it unless you have a specific reason to accept connections there.

Why Abandoned Ports Matter

The registered port range is a commons. When a service claims a number and disappears, that number doesn't get recycled — it stays reserved. Developers who need a port for a new tool sometimes look at the registry, see "VersaTek" on 2610, and assume it's taken. Others don't check at all and use it anyway.

This is how port conflicts happen. Two pieces of software, developed independently, land on the same number without knowing it. Neither is wrong, exactly — but one of them will fail to bind when both are present on the same machine.

IANA's registry is the map. Port 2610 is a dot on that map with a name but no road leading to it.