Port 8937Transaction Warehouse Data Service

TCP 8937 is assigned to Transaction Warehouse Data Service, registered to Lance M Steenson; no established public implementation is known.

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

also known as twds

Technical Details

what runs on :8937

Transaction Warehouse Data Service is registered on port :8937 over tcp to Lance M Steenson, assigned September 2009. 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 :8937

this machine

# linux
sudo ss -tlpn 'sport = :8937'

# macos / bsd
sudo lsof -nP -i :8937

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :8937

another host

nmap -sV -p T:8937 <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 :8937

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 :8937 yet

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

Record

iana registry entry

port: :8937
service: Transaction Warehouse Data Service
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA assigns TCP port 8937 to Transaction Warehouse Data Service, registered to Lance M Steenson. No widely documented implementation or routine internet-facing use is established.
lookups: 0rank 993
added: 2026-10-15
updated: 2026-10-15
references: IANA service name registry — port 8937

Something wrong?

This record is maintained by the engineers who use port 8937. 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 2026-10-15.

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 :8937, by lookups.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:8888	D2GS Admin Console	TCP	Remote Access	caution	83.7k
:8888	NewsEDGE	TCPUDP	Web Services	caution	83.3k
:8888	HTTP Alternative Port	TCP	Web Services	caution	76.5k
:8888	GNUmp3d Streaming HTTP	TCP	Web Services	caution	76.3k
:8888	Earthland Realms 2 Server	TCP	Gaming	caution	73.1k
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:8882	Atlasz Secure App Server	TCP	Web Services	caution	66.9k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :8937Transaction Warehouse Data Service

Technical Details

Security Information

Related Ports

Port 8937Transaction Warehouse Data Service