Port 650OBEX

OBEX object-exchange traffic for legacy device file, contact, and media transfers.

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

also known as Object Exchange, IrOBEX

Technical Details

what runs on :650

OBEX is a compact binary request/response protocol with a CONNECT negotiation followed by operations such as PUT, GET, SETPATH, and DISCONNECT. Messages contain response codes and length-prefixed headers; authentication is optional and the protocol itself does not provide encryption. IANA assigns this service on both TCP and UDP, although real-world OBEX profiles commonly use IrDA or Bluetooth RFCOMM instead of directly exposing port 650.

Security Information

exposure of :650

risk score

1/ 10safe

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

file transfer averages 3.6 across 159 ports — this one sits 2.6 below.

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

OBEX is not encrypted by default, and authentication and authorization depend on the underlying device profile and implementation. Internet exposure is unnecessary and could permit unauthorized object access or denial-of-service attacks against legacy implementations; restrict it to the expected local device transport.

Record

iana registry entry

port: :650
service: OBEX
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: File Transfer Mobile
usage: Port 650 is assigned for OBEX, the Object Exchange protocol used for transferring files and other objects between devices. OBEX is more commonly encountered over IrDA or Bluetooth RFCOMM than as an Internet-facing TCP or UDP service, and it has not appeared open in internet-wide scans.
lookups: 0rank 994
added: 2026-09-16
updated: 2026-09-16
references: IANA service name registry — port 650

Something wrong?

This record is maintained by the engineers who use port 650. 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 2026-09-16.

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Related Ports

all 159 in file transfer →

the 8 most looked-up other ports in file transfer — 159 ports carry that label.

port	service	proto	category	risk	views
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:17500	Dropbox LAN Sync	TCPUDP	File Transfer	caution	43.7k
:548	Apple Filing Protocol	TCP	File Transfer	caution	36.8k
:7000	Vuze HTTPS Tracker	TCPtls	Security	caution	28.9k
:1337	PowerFolder P2P	TCP	Security	caution	27.1k
:9001	SharePoint Authoring		Web Services	caution	26.3k
:8080	FilePhile Relay	UDP	File Transfer	caution	25.6k
:1337	WASTE Encrypted Sharing	TCP	Security	caution	22.9k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :650OBEX

Technical Details

Security Information

Related Ports

Port 650OBEX