Port 10413 — Unassigned Registered Port

What This Port Is

Port 10413 is an unassigned registered port—meaning it falls within the IANA's range of 1024 to 49151. This range was created specifically for services that organizations or individuals register for their own protocols. Unlike the system ports (0-1023) reserved for critical Internet protocols like HTTP, DNS, and SSH, registered ports are open territory.

No service has claimed port 10413. No RFC defines what should run here. The IANA port registry lists it as unassigned. ¹

The Registered Port Range

The registered port range (1024-49151) represents a democratic space: roughly 48,000 doors, each available for a service to call home. When someone designs a protocol and needs a port, they submit an application to IANA. The port gets assigned, documented, and becomes official.

Port 10413 hasn't been claimed. Neither have tens of thousands of others.

Known Uses

None documented. Port scanning databases like SpeedGuide and Wikipedia's comprehensive TCP/UDP port list don't mention port 10413. No application conventionally uses it. ²³

This doesn't mean nothing is running on it on any given system—someone's internal application might use it right now. But there's no standard, no protocol, no published specification.

How to Check What's Listening

If you want to know whether something is listening on port 10413 on your machine:

On Linux/macOS:

lsof -i :10413          # Show process listening on port 10413
netstat -tlnp | grep 10413   # Check if port is in LISTEN state
ss -tlnp | grep 10413        # Modern alternative to netstat

On Windows:

netstat -ano | findstr :10413   # Show port and associated process ID
Get-NetTCPConnection -LocalPort 10413 -ErrorAction SilentlyContinue   # PowerShell

Why Unassigned Ports Matter

Every unassigned port is a possibility. It's where the next protocol might live. When BitTorrent needed a home, it could have been any unassigned port—it happened to be 6881-6889. When someone builds the next critical Internet service, they'll claim an unassigned port and change what the Internet is.

Port 10413 could be that door. Or it could stay silent forever. That's the beauty and the emptiness of unassigned ports: they're pregnant with potential that might never be realized.

See Also

• Registered Ports (1024-49151): Other unclaimed doors with the same potential
• Dynamic/Ephemeral Ports (49152-65535): Ports the OS uses temporarily for outgoing connections
• System Ports (0-1023): Where the core Internet protocols live