Port 21554MineScape Design File Server

TCP and UDP port 21554 is assigned to the MineScape Design File Server for MineScape design files.

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

also known as dfserver

Technical Details

what runs on :21554

MineScape Design File Server is registered on port :21554 over tcp and udp to Michael Purser, assigned June 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 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 :21554

this machine

# linux
sudo ss -tulpn 'sport = :21554'

# macos / bsd
sudo lsof -nP -i :21554

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :21554

another host

nmap -sV -p T:21554 <host>
sudo nmap -sU -sV -p U:21554 <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 :21554

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 :21554 yet

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

Record

iana registry entry

port: :21554
service: MineScape Design File Server
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA assigns TCP and UDP port 21554 to the MineScape Design File Server, registered to Michael Purser. The registry gives no further protocol or deployment details, and the port has not appeared open in nmap's scan data.
lookups: 0rank 993
added: 2026-10-18
updated: 2026-10-18
references: IANA service name registry — port 21554

Something wrong?

This record is maintained by the engineers who use port 21554. 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 2026-10-18.

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 :21554, by lookups.

port	service	proto	category	risk	views
:21553	Raima RDM TFS	TCP	Databases	safe	0
:21590	VoFR Gateway	TCPUDP	Voice and Chat	safe	0

risk mix of the 2 listed

safe100%

0 of 2 encrypted

Port :21554MineScape Design File Server

Technical Details

Security Information

Related Ports

Port 21554MineScape Design File Server