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// Other services

Port 5580: T-Mobile SMS Protocol Message 0

Port 5580 is assigned by IANA to tmosms0 (T-Mobile SMS Protocol Message 0).

5580

How tmosms0 works

Other services
client:5580tmosms0response client:5580tmosms0response

The client sends a request to port 5580 and the tmosms0 service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 5580 dangerous?

We have no specific security note for port 5580. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 5580

ServicePortTransportDescriptionReferenceUpdated
tmosms0 5580 TCP, UDP T-Mobile SMS Protocol Message 0 - 2006-06

// source: IANA service name and port number registry

03 Check it

Which program uses port 5580, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5580'      # process listening on 5580
sudo lsof -nP -i :5580

macOS

sudo lsof -nP -i :5580

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5580 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5580
netstat -ano | findstr :5580

From another machine

nmap -p 5580 -sV <host>
sudo nmap -sU -p 5580 <host>
nc -zv <host> 5580

Block it in the firewall

sudo ufw deny 5580/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5580" -Direction Inbound -LocalPort 5580 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5580 used for?

Port 5580 is assigned by IANA to tmosms0 (T-Mobile SMS Protocol Message 0).

Is port 5580 TCP or UDP?

Port 5580 is registered for TCP and UDP.

Is it safe to open port 5580?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 5580 is open?

On Linux run "ss -ltnup 'sport = :5580'", on macOS "lsof -nP -i :5580", and on Windows "netstat -ano | findstr :5580" to see the local process. From another machine, "nmap -p 5580 <host>" shows whether it is reachable.

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