Port 3216: Ferrari electronic FOAM — a registered port nobody talks about

What This Port Is

Port 3216 sits in the registered port range (1024–49151), the middle tier of the port numbering system. Registered ports are assigned by IANA to specific services and applications — not reserved for system use like the well-known ports below 1024, but not ephemeral either. When a company or protocol needs a stable, officially recognized port number, this is where they end up.

Despite being listed as unassigned in many databases, port 3216 does have an IANA registration: ferrari-foam, assigned to Ferrari electronic AG.¹

Ferrari Electronic AG

Ferrari electronic is a German company based in Teltow, near Berlin, founded in 1989. They specialize in unified communications — specifically fax, voicemail, SMS, and computer telephony integration (CTI). Their flagship product line, OfficeMaster, integrates these channels into email systems and enterprise platforms like Microsoft Exchange.²

The "FOAM" designation in the port assignment likely refers to an internal protocol used by their messaging infrastructure. It operates on both TCP and UDP.

What's notable: Ferrari electronic serves over 50,000 companies and 5 million users. The company is real, the products are real — but port 3216 is so rarely documented that it doesn't show up in most public port references. A registered port can be obscure. Registration and adoption are different things.

The Registered Port Range

The registered range (1024–49151) contains over 48,000 port numbers. IANA assigns them on request, but has no mechanism to verify that registered services are actually deployed or widely used. Many registered ports were claimed by companies for products that never shipped, protocols that were superseded, or internal use that never reached the public Internet.

Port 3216 falls into this category: officially assigned, practically invisible.

If You See This Port Open

If port 3216 shows up open on a machine you administer, it's almost certainly not Ferrari electronic FOAM — it's whatever software on that machine happened to bind to that port dynamically, or a misconfigured service. Check what's actually listening:

macOS / Linux:

sudo lsof -i :3216
sudo ss -tlnp | grep 3216

Windows:

netstat -ano | findstr :3216

Then match the process ID to a running application. Dynamic port assignment and ephemeral connections often land on registered port numbers opportunistically.