Port 4485Assyst Data Repository Service

TCP 4485 is assigned to Assyst Data Repository Service, a little-documented service registered to Albert Cester.

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

also known as assyst-dr

Technical Details

what runs on :4485

Assyst Data Repository Service is registered on port :4485 over tcp to Albert Cester, assigned August 2008. 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 never observed open, so if it's open on your network it's more likely a custom or misconfigured service than the registered one.

find what's listening on :4485

this machine

# linux
sudo ss -tlpn 'sport = :4485'

# macos / bsd
sudo lsof -nP -i :4485

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :4485

another host

nmap -sV -p T:4485 <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 :4485

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

every listening transport is another surface to filter at the edge

security overview

no security notes recorded for :4485 yet

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

Record

iana registry entry

port: :4485
service: Assyst Data Repository Service
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: The IANA assignment identifies TCP port 4485 as Assyst Data Repository Service and lists Albert Cester as the registrant. There is no established public information about its deployment or behavior.
lookups: 0rank 993
added: 2026-10-05
updated: 2026-10-05
references: IANA service name registry — port 4485

Something wrong?

This record is maintained by the engineers who use port 4485. 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 2026-10-05.

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 :4485, by lookups.

port	service	proto	category	risk	views
:4500	IPSec NAT Traversal	UDPtls	Security	caution	15.8k
:4534	Armagetron Advanced	UDP	Gaming	caution	9.4k
:4433	Axence nVision	TCP	Security	caution	8.9k
:4443	Pharos	TCPUDP	—	safe	0
:4447	N1-RMGMT	TCPUDP	—	safe	0
:4536	Event Heap Server SSL	TCPUDPtls	Network Services	safe	0
:4449	PrivateWire	TCPUDP	—	safe	0
:4444	Kerberos 524	TCPUDP	Security	caution	0

risk mix of the 8 listed

safe50%
caution50%

2 of 8 encrypted

Port :4485Assyst Data Repository Service

Technical Details

Security Information

Related Ports

Port 4485Assyst Data Repository Service