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// Other services

Port 626: ASIA

Port 626 is assigned by IANA to asia (ASIA).

626

How asia works

Other services
client:626asiaresponse client:626asiaresponse

The client sends a request to port 626 and the asia 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 626 dangerous?

We have no specific security note for port 626. 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 626

ServicePortTransportDescriptionReferenceUpdated
asia 626 TCP, UDP ASIA - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 626, and is it reachable?

Linux

sudo ss -ltnup 'sport = :626'      # process listening on 626
sudo lsof -nP -i :626

macOS

sudo lsof -nP -i :626

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 626 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 626
netstat -ano | findstr :626

From another machine

nmap -p 626 -sV <host>
sudo nmap -sU -p 626 <host>
nc -zv <host> 626

Block it in the firewall

sudo ufw deny 626/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 626" -Direction Inbound -LocalPort 626 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 626 used for?

Port 626 is assigned by IANA to asia (ASIA).

Is port 626 TCP or UDP?

Port 626 is registered for TCP and UDP.

Is it safe to open port 626?

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 626 is open?

On Linux run "ss -ltnup 'sport = :626'", on macOS "lsof -nP -i :626", and on Windows "netstat -ano | findstr :626" to see the local process. From another machine, "nmap -p 626 <host>" shows whether it is reachable.

05 Related
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