Port 9599Robix

Robix is an obscure service assigned for use over TCP and UDP port 9599.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 1/10
lookups: 0

Technical Details

what runs on :9599

Robix is registered on port :9599 over tcp and udp to Evan Rosen, assigned November 2005. We don't have a technical write-up for it beyond the IANA registry entry.

In nmap's internet-wide scan data this port is found open rarely. What's listening is often not the registered service, so check before you assume.

find what's listening on :9599

this machine

# linux
sudo ss -tulpn 'sport = :9599'

# macos / bsd
sudo lsof -nP -i :9599

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :9599

another host

nmap -sV -p T:9599 <host>
sudo nmap -sU -sV -p U:9599 <host>

run it? the handshake, the implementations you meet in the wild and the flags that matter come from the engineers who do.

add technical details

Security Information

exposure of :9599

risk score

1/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

no security notes recorded for :9599 yet

known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.

Record

iana registry entry

port: :9599
service: Robix
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: Port 9599 is assigned to the Robix service over both TCP and UDP. The assignment was registered to Evan Rosen in November 2005, but the registry provides no further usage or protocol details.
lookups: 0rank 993
added: 2026-08-25
updated: 2026-08-25
references: IANA service name registry — port 9599

Something wrong?

This record is maintained by the engineers who use port 9599. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-08-25.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

browse categories →

ports registered around :9599, by lookups.

port	service	proto	category	risk	views
:9600	Omron FINS Communication	UDP	Network Services	caution	33.2k
:9535	LANDesk Remote Control	TCPUDP	Remote Access	caution	11.1k
:9561	Network Time System	TCPUDP	Network Services	safe	8.3k
:9536	IP Fabrics Buffering	TCPUDP	Security	caution	4.4k
:9598	Very Simple Control Protocol	TCPUDP	Network Services	risk	0
:9600	Micromuse NCPW	TCPUDP	—	safe	0
:9592	LANDesk Gateway	TCPUDP	Network Services	safe	0
:9616	eRunbook Agent	TCP	—	safe	0

risk mix of the 8 listed

safe50%
caution38%
risk13%

0 of 8 encrypted

Port :9599Robix

Technical Details

Security Information

Related Ports

Port 9599Robix