Port 3339OMF Data L

Port 3339 is assigned to the OMF data l service designation over TCP and UDP.

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

also known as anet-l

Technical Details

what runs on :3339

OMF Data L is registered on port :3339 over tcp and udp. 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 :3339

this machine

# linux
sudo ss -tulpn 'sport = :3339'

# macos / bsd
sudo lsof -nP -i :3339

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :3339

another host

nmap -sV -p T:3339 <host>
sudo nmap -sU -sV -p U:3339 <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 :3339

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 :3339 yet

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

Record

iana registry entry

port: :3339
service: OMF Data L
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA assigns TCP and UDP port 3339 to OMF data l. No registrant or product information is recorded, so the software commonly using it cannot be identified from the registry.
lookups: 0rank 993
added: 2026-09-04
updated: 2026-09-04
references: IANA service name registry — port 3339

Something wrong?

This record is maintained by the engineers who use port 3339. 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 2026-09-04.

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 :3339, by lookups.

port	service	proto	category	risk	views
:3283	Apple Remote Desktop Reporting	TCP	Remote Access	caution	26.0k
:3386	GTP (GPRS Tunneling Protocol)	TCPUDP	Network Services	caution	16.7k
:3389	Microsoft RDP	TCPUDP	Remote Access	caution	16.3k
:3299	SAP Router	TCPtls	Network Services	caution	13.8k
:3306	MySQL	TCPUDP	Databases	caution	13.6k
:3333	Network Caller ID	TCP	Network Services	caution	10.1k
:3300	Debate Gopher DB	TCPUDP	Databases	caution	7.6k
:3305	Odette FTP (OFTP)	TCPUDP	File Transfer	caution	6.7k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :3339OMF Data L

Technical Details

Security Information

Related Ports

Port 3339OMF Data L