Port 4663Note It! Message Service

Port 4663 is assigned to the Note It! Message Service over TCP and UDP.

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

Technical Details

what runs on :4663

no technical write-up for :4663 yet

the handshake, the implementations you meet in the wild, the flags that matter. we have the registry entry — the detail comes from the engineers who run it.

add technical details

Security Information

exposure of :4663

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 :4663 yet

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

Record

iana registry entry

port: :4663
service: Note It! Message Service
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: This assignment identifies the Note It! Message Service on TCP and UDP port 4663. IANA registered it to Pedro Alpedrinha in 2006; the service is rarely observed open on the public internet.
lookups: 0rank 994
added: 2026-09-06
updated: 2026-09-06
references: IANA service name registry — port 4663

Something wrong?

This record is maintained by the engineers who use port 4663. 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 2026-09-06.

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 :4663, by lookups.

port	service	proto	category	risk	views
:4664	Google Desktop Search	TCP	System	caution	67.2k
:4712	McAfee Web Gateway GUI	TCPtls	Web Services	caution	24.8k
:4711	McAfee Web Gateway HTTP GUI	TCP	Web Services	caution	22.3k
:4610	QualiSystems TestShell	TCP	Network Services	caution	10.8k
:4662	OrbitNet Message	TCPUDP	File Transfer	caution	9.0k
:4662	eMule File Sharing	TCP	File Transfer	caution	6.0k
:4672	eMule UDP Port	UDP	File Transfer	caution	5.1k
:4664	Wrapper: Offline asset server	TCPUDP	Web Services	caution	3.5k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :4663Note It! Message Service

Technical Details

Security Information

Related Ports

Port 4663Note It! Message Service