Port 2673First Call 42

Port 2673 is assigned to the First Call 42 service over TCP and UDP.

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

Technical Details

what runs on :2673

First Call 42 is registered on port :2673 over tcp and udp to Luke Bowen. 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 :2673

this machine

# linux
sudo ss -tulpn 'sport = :2673'

# macos / bsd
sudo lsof -nP -i :2673

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :2673

another host

nmap -sV -p T:2673 <host>
sudo nmap -sU -sV -p U:2673 <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 :2673

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 :2673 yet

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

Record

iana registry entry

port: :2673
service: First Call 42
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: TCP and UDP port 2673 is assigned to the First Call 42 service. The assignment is registered to Luke Bowen, with no recorded registration date or additional registry notes.
lookups: 0rank 993
added: 2026-09-03
updated: 2026-09-03
references: IANA service name registry — port 2673

Something wrong?

This record is maintained by the engineers who use port 2673. 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 2026-09-03.

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 :2673, by lookups.

port	service	proto	category	risk	views
:2710	XBT BitTorrent Tracker	TCP	File Transfer	caution	11.6k
:2710	XBT UDP Tracker Extension	UDP	File Transfer	caution	11.4k
:2713	Raven Trinity Broker	TCPUDP	Network Services	caution	11.1k
:2700	KnowShowGo P2P	TCP	File Transfer	caution	9.9k
:2638	Sybase Listener	TCP	Databases	caution	7.8k
:2710	Knuddels Chat	TCP	Voice and Chat	caution	5.3k
:2610	Dark Ages	TCP	Network Services	caution	5.0k
:2714	Raven Trinity Data Mover	TCPUDP	File Transfer	caution	4.7k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :2673First Call 42

Technical Details

Security Information

Related Ports

Port 2673First Call 42