CyberHunter
Local dataset, no network
// Other services

Port 455: CreativePartnr

Port 455 is assigned by IANA to creativepartnr (CreativePartnr).

455

How creativepartnr works

Other services
client:455creativepartnrresponse client:455creativepartnrresponse

The client sends a request to port 455 and the creativepartnr 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 455 dangerous?

We have no specific security note for port 455. 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 455

ServicePortTransportDescriptionReferenceUpdated
creativepartnr 455 TCP, UDP CreativePartnr - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 455, and is it reachable?

Linux

sudo ss -ltnup 'sport = :455'      # process listening on 455
sudo lsof -nP -i :455

macOS

sudo lsof -nP -i :455

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 455 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 455
netstat -ano | findstr :455

From another machine

nmap -p 455 -sV <host>
sudo nmap -sU -p 455 <host>
nc -zv <host> 455

Block it in the firewall

sudo ufw deny 455/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 455" -Direction Inbound -LocalPort 455 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 455 used for?

Port 455 is assigned by IANA to creativepartnr (CreativePartnr).

Is port 455 TCP or UDP?

Port 455 is registered for TCP and UDP.

Is it safe to open port 455?

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 455 is open?

On Linux run "ss -ltnup 'sport = :455'", on macOS "lsof -nP -i :455", and on Windows "netstat -ano | findstr :455" to see the local process. From another machine, "nmap -p 455 <host>" shows whether it is reachable.

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