Port 10467 — A Registered Port Without an Official Name

What Range Is This?

Port 10467 falls in the registered port range (1024-49151). These are the ports you need permission to use, but not superuser access to listen on. ¹ This is where IANA assigns ports to organizations that request them, where services get names that make sense to someone, somewhere.

Most of the time. Sometimes ports in this range get used without making it into the official registry.

What Actually Uses Port 10467?

The only documented use appears in Azure monitoring infrastructure. NetFlow Logic's Azure monitoring tools reference ports 10467 and 20467 as part of Azure Top Traffic Monitor—a system that watches which virtual machines generate the most network traffic. ²

Is this an official Azure port? The Microsoft documentation doesn't claim it. Is it registered with IANA? No. Does it work anyway? Yes.

This is the unspoken truth of the registered port range: the official registry is aspirational. Many services that use these ports never formally registered them. Organizations assign themselves port numbers, build systems around them, and move on.

How to Check What's Listening

If port 10467 is listening on your machine, you probably want to know why. The methods are standard across operating systems:

Linux/macOS:

# Show which process is listening
sudo lsof -i :10467
sudo ss -tulpn | grep 10467
netstat -tulpn | grep 10467

Windows (PowerShell):

Get-NetTCPConnection -LocalPort 10467 | Get-Process

These commands will tell you the process name and ID. From there, you can identify whether it's an Azure tool, a development service, or something else entirely. ³

Why Unassigned Ports Matter

Port 10467 represents something real about how the Internet actually works: it's messier than the official standards suggest. The IANA registry is the law, but not everyone follows it. Organizations with enough scale (like Microsoft/Azure) simply claim a port and use it.

The registered range (1024-49151) is where this tension lives. ¹ It's formal enough to have a name and a registry, but informal enough that enforcement doesn't exist. A port can be officially assigned, unofficially used, or both at the same time.

Port 10467 is likely one of thousands of registered ports that are actively used but never made it into the official narrative. Your machine might be running something on it right now and you'd never know unless you checked.