The Registration
Port 1057 is officially registered with IANA (Internet Assigned Numbers Authority) for a service called STARTRON.1 Both TCP and UDP variants are assigned. The registration exists in the official port registry, alongside SSH (port 22), HTTPS (port 443), and thousands of others.
But that's where the trail ends. STARTRON has no documentation. No software. No RFC. No company website. No GitHub repository. No stack overflow questions. Just a name in a database.
What This Port Actually Is
Port 1057 belongs to the registered port range (1024-49151). These ports are assigned by IANA to specific services upon request. Anyone can apply for a registered port—you submit an application, demonstrate that you have a legitimate service, and IANA assigns you a number.
Someone did exactly that for STARTRON. They requested port 1057, got it approved, and then... nothing. The service either never launched, died quietly, or operates in such obscurity that it left no digital footprint.
The Practical Reality
In practice, port 1057 is effectively unassigned. You're unlikely to encounter anything running on it. Some legacy Unix systems may occasionally use ports in this range for Sun RPC (Remote Procedure Call) services, but there's no evidence that STARTRON itself ever ran on real networks.2
If you see traffic on port 1057 on your network, it's probably:
- A misconfigured service that chose a random port
- Malware using an obscure port to avoid detection
- A custom application that picked 1057 because it was "available"
Why Register a Port?
The registration process exists because the early Internet assumed services would be permanent. You'd create a protocol, write an RFC, implement the software, and register a port number so everyone would know where to find you. Port numbers were treated like street addresses—permanent locations where services would live forever.
But software doesn't work that way. Companies fail. Projects get abandoned. Better alternatives emerge. The Internet moved on, but the port registry stayed frozen, full of names like STARTRON that once meant something to someone.
Checking What's Listening
If you want to see if anything is actually using port 1057 on your system:
On Linux/Mac:
On Windows:
Chances are you'll see nothing. Port 1057 is a door that was built but never opened.
The Larger Pattern
Port 1057 isn't unique. The registered port range contains thousands of assignments like this—services that were registered in the 1990s or early 2000s and have since vanished. The registry is less a directory of active services and more a historical record of what people once hoped to build.
Some registrations became essential (HTTP on 80, HTTPS on 443). Most became forgotten (STARTRON on 1057). The port number remains, a small monument to something that never quite happened.
Frequently Asked Questions About Port 1057
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