Port 999Applix ac

UDP port 999 is assigned to the Applix ac service.

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

1 other service is registered on port 999. compare all 2 →

Technical Details

what runs on :999

no technical write-up for :999 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 :999

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

udp

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

security overview

no security notes recorded for :999 yet

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

Record

iana registry entry

port: :999
service: Applix ac
transport: UDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA assigns UDP port 999 to “Applix ac.” No registrant or further usage information is recorded, so open-port observations should not be assumed to identify a specific product.
lookups: 0rank 994
added: 2026-08-19
updated: 2026-08-19
references: IANA service name registry — port 999

Something wrong?

This record is maintained by the engineers who use port 999. 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 2026-08-19.

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 :999, by lookups.

port	service	proto	category	risk	views
:981	Check Point Embedded HTTPS Management	TCPtls	Security	caution	28.5k
:992	Telnet over TLS/SSL	TCPUDPtls	Security	caution	23.5k
:989	FTPS Data	TCPUDPtls	Security	caution	22.5k
:990	FTPS Control	TCPUDPtls	Security	caution	21.8k
:995	POP3S	TCPtls	Email	caution	18.8k
:991	Netnews Administration System	TCPUDP	Network Services	caution	17.9k
:953	DNS RNDC	TCPUDP	Security	safe	16.4k
:1059	IBM AIX NIM	TCPUDP	Network Services	caution	15.6k

risk mix of the 8 listed

safe13%
caution88%

5 of 8 encrypted

Port :999Applix ac

Technical Details

Security Information

Related Ports

Port 999Applix ac