Port 7628Primary Agent Work Notification

Port 7628 is assigned to the Primary Agent Work Notification service, also identified as zen-pawn.

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

also known as zen-pawn

Technical Details

what runs on :7628

Primary Agent Work Notification is registered on port :7628 over tcp and udp to Ty Ellis, assigned May 2006. 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 :7628

this machine

# linux
sudo ss -tulpn 'sport = :7628'

# macos / bsd
sudo lsof -nP -i :7628

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :7628

another host

nmap -sV -p T:7628 <host>
sudo nmap -sU -sV -p U:7628 <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 :7628

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 :7628 yet

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

Record

iana registry entry

port: :7628
service: Primary Agent Work Notification
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA assigns TCP and UDP port 7628 to Primary Agent Work Notification. The assignment is registered to Ty Ellis; public documentation describing the software or deployment is not available from the registry entry.
lookups: 0rank 993
added: 2026-09-14
updated: 2026-09-14
references: IANA service name registry — port 7628

Something wrong?

This record is maintained by the engineers who use port 7628. 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 2026-09-14.

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 :7628, by lookups.

port	service	proto	category	risk	views
:7676	AlphaVision RCI	TCP	Remote Access	caution	14.5k
:7670	BrettspielWelt	TCP	Gaming	caution	12.8k
:7680	Windows Delivery Optimization	TCPUDP	Network Services	caution	0
:7633	PMDF Management	TCPUDP	System	safe	0
:7676	iMQ Broker	TCPUDP	Network Services	risk	0
:7627	SOAP Service	TCPUDP	Web Services	safe	0
:7677	Sun App Server HTTPS	TCPUDPtls	Web Services	safe	0

risk mix of the 7 listed

safe43%
caution43%
risk14%

1 of 7 encrypted

Port :7628Primary Agent Work Notification

Technical Details

Security Information

Related Ports

Port 7628Primary Agent Work Notification