Port 52643Com Network Jack Port 1

IANA-assigned TCP and UDP port for 3Com Network Jack Port 1.

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

also known as 3com-njack-1

Technical Details

what runs on :5264

3Com Network Jack Port 1 is registered on port :5264 over tcp and udp to Abhay Rajaram, assigned March 2003. 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 :5264

this machine

# linux
sudo ss -tulpn 'sport = :5264'

# macos / bsd
sudo lsof -nP -i :5264

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :5264

another host

nmap -sV -p T:5264 <host>
sudo nmap -sU -sV -p U:5264 <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 :5264

risk score

1/ 10safe

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

network services averages 2.7 across 1,348 ports — this one sits 1.7 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

no security notes recorded for :5264 yet

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

Record

iana registry entry

port: :5264
service: 3Com Network Jack Port 1
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: Network Services
usage: The assignment identifies TCP and UDP port 5264 as 3Com Network Jack Port 1. It was registered by Abhay Rajaram in 2003, and internet-wide scans show it is rarely open.
lookups: 0rank 993
added: 2026-09-06
updated: 2026-09-06
references: IANA service name registry — port 5264

Something wrong?

This record is maintained by the engineers who use port 5264. 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

all 1,348 in network services →

the 8 most looked-up other ports in network services — 1,348 ports carry that label.

port	service	proto	category	risk	views
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:6543	Jetnet	UDP	Network Services	caution	65.3k
:5938	TeamViewer	TCPUDP	Remote Access	caution	65.0k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:3233	WhiskerControl Protocol	TCPUDP	Network Services	caution	61.9k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:3128	Tatsoft Default HTTP Proxy	TCP	Web Services	caution	46.8k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :52643Com Network Jack Port 1

Technical Details

Security Information

Related Ports

Port 52643Com Network Jack Port 1