Port 1654: stargatealerts — A name in the registry

Port 1654 sits in the registered ports range (1024-49151), officially assigned by IANA to a service named "stargatealerts."¹ But if you go looking for information about what stargatealerts actually does, you'll find almost nothing.

No RFC. No public documentation. No company claiming ownership. Just a name in a database.

What We Know

Port 1654 is registered for both TCP and UDP protocols under the service name "stargatealerts."² The name suggests some kind of alert or notification system—possibly related to network monitoring or event notification—but IANA's registry doesn't require detailed descriptions when ports are assigned.

There is a GitHub project called "Stargate" developed by SAP that handles alert management and Slack integration with Prometheus Alertmanager,³ but there's no documented connection between that project and port 1654. The project documentation doesn't mention this port number.

The Registered Ports Range

Port 1654 belongs to the registered ports category—the middle tier of the port number system:

• Well-known ports (0-1023): Reserved for common services like HTTP (80), HTTPS (443), SSH (22). Require root/administrator privileges to bind on Unix-like systems.
• Registered ports (1024-49151): Available for registration with IANA. Companies and developers can request specific port assignments for their services. No special privileges required to use them.
• Dynamic/ephemeral ports (49152-65535): Never assigned. Used automatically by operating systems for temporary client connections.

When someone develops a network protocol or service, they can register a port number with IANA to prevent conflicts. But registration doesn't guarantee the service will be widely adopted, documented, or even deployed. Thousands of registered ports exist only as entries in IANA's database.

Why Unassigned and Obscure Ports Matter

The port numbering system works because of this registration process. Even ports that never see widespread use serve a purpose: they prevent conflicts. If port 1654 is formally registered to "stargatealerts," no other service should use that number for a conflicting purpose.

But in practice, most registered ports are never checked. If you're running a private network service and you pick a random port in the registered range, you're unlikely to ever encounter the official service that claimed it.

How to Check What's Listening

If you want to see if anything is using port 1654 on your system:

On Linux/macOS:

# Check if anything is listening on port 1654
sudo lsof -i :1654

# Or using netstat
sudo netstat -tulpn | grep 1654

# Or using ss (modern replacement for netstat)
sudo ss -tulpn | grep 1654

On Windows:

# Check listening ports
netstat -ano | findstr :1654

If you see output, something is bound to that port. If not, it's unused on your system.

The Reality of Port Assignments

Port 1654 represents a common pattern in the Internet's infrastructure: a formal assignment that exists primarily on paper. Someone, at some point, requested this port number for "stargatealerts." IANA granted it. And then... the service either never launched publicly, remained proprietary, or faded into obscurity.

The registry serves its purpose regardless. Port 1654 is claimed. The name is recorded. And somewhere, perhaps on a private network or an internal corporate system, stargatealerts might still be running.

Or it might never have run at all.