What Port 3007 Is Officially For
According to the IANA registry, port 3007 belongs to lotusmtap — the Lotus Mail Tracking Agent Protocol. It was registered for IBM Lotus Notes/Domino, specifically the agent that tracked mail delivery status within Lotus messaging environments.1
Lotus Notes dominated enterprise email in the 1990s and early 2000s. IBM acquired it, neglected it, and eventually sold it to HCL Technologies in 2019. The lotusmtap protocol that justified this port assignment is largely a relic. Almost no new deployments use it.
The result: an officially assigned port with no meaningful tenant.
The Registered Port Range
Port 3007 lives in the registered ports range (1024–49151). This range sits between the well-known ports (0–1023), which require root/administrator privileges to bind, and the ephemeral ports (49152–65535), which operating systems assign temporarily to outgoing connections.
Registered ports are a middle ground — anyone can bind to them without elevated privileges, but IANA maintains a registry of who is supposed to be using them. The registry is advisory, not enforced. Nothing stops software from using port 3007 regardless of what IANA says.
Who Actually Uses It
Because the official tenant is absent, port 3007 has been informally colonized by a few different applications:
Miralix OM Server — A contact center communication platform that uses port 3007 for TCP connections between its server and agent consoles. It carries real-time call status, routing directives, and presence data.2
DVR systems — ViewGate Classic and Talon DVR systems have both been observed using ports in the 3000–3007 range for camera and recording management traffic.3
Custom applications — Developers who needed a port that wasn't obviously occupied sometimes landed here. If you see traffic on 3007 that doesn't match the above, it's probably something proprietary.
How to Check What's Listening
If you see activity on port 3007 and want to know what's behind it:
Linux/macOS:
macOS (alternative):
Windows:
The last column in the netstat output is the process ID (PID). Cross-reference it with Task Manager or tasklist to identify the application.
Why Ghost Ports Exist
The IANA registry was never designed to be perfectly accurate across the entire registered range. There are over 48,000 registered ports, and many assignments date back decades to products and protocols that no longer exist. Port 3007 is one of hundreds that are technically claimed but practically available.
This is fine — the Internet works despite the registry being messy. But it means you can't assume a registered port is free just because the official service is defunct, and you can't assume the service on a registered port matches the registry.
When in doubt: look at what's actually running.
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