Port 9211OMA Mobile Location Protocol Secure

Secure transport for the Open Mobile Alliance Mobile Location Protocol.

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

also known as oma-mlp-s, OMA MLP Secure

Technical Details

what runs on :9211

OMA Mobile Location Protocol Secure is registered on port :9211 over tcp and udp to Hans Rohnert, assigned April 2002. 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 :9211

this machine

# linux
sudo ss -tulpn 'sport = :9211'

# macos / bsd
sudo lsof -nP -i :9211

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :9211

another host

nmap -sV -p T:9211 <host>
sudo nmap -sU -sV -p U:9211 <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 :9211

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

encrypted

payloads are protected on the wire

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 :9211 yet

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

Record

iana registry entry

port: :9211
service: OMA Mobile Location Protocol Secure
transport: TCPUDP
encryption: tls / encrypted
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: This assignment identifies a secure OMA Mobile Location Protocol service using TCP and UDP port 9211. It was registered to Hans Rohnert in 2002; public deployment appears to be rare.
lookups: 0rank 993
added: 2026-09-07
updated: 2026-09-07
references: IANA service name registry — port 9211

Something wrong?

This record is maintained by the engineers who use port 9211. 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 2026-09-07.

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 :9211, by lookups.

port	service	proto	category	risk
:9200	WAP Wireless Session Protocol (WSP)	TCPUDP	Network Services	safe
:9164	apani5	TCPUDP	—	safe
:9206	WAP vCard Secure	TCPUDPtls	Mobile	safe
:9207	WAP vCal Secure	TCPUDPtls	Mobile	safe
:9214	IPDC ESG Bootstrap Service	TCPUDP	Media	safe
:9222	QSC Team Coherence	TCPUDP	—	safe
:9191	Sun Application Server JPDA	TCPUDP	System	safe
:9160	apani1	TCPUDP	—	safe

risk mix of the 8 listed

safe100%

2 of 8 encrypted

Port :9211OMA Mobile Location Protocol Secure

Technical Details

Security Information

Related Ports

Port 9211OMA Mobile Location Protocol Secure