Port 2781whosells

Whosells uses TCP and UDP port 2781; public protocol details are not documented.

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

Technical Details

what runs on :2781

no technical write-up for :2781 yet

the handshake, the implementations you meet in the wild, the flags that matter. we have the registry entry — the detail comes from the engineers who run it.

add technical details

Security Information

exposure of :2781

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 :2781 yet

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

Record

iana registry entry

port: :2781
service: whosells
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA assigns the whosells service to TCP and UDP port 2781. The assignment is registered to William Randolph Roy, with no registration date or additional notes recorded.
lookups: 0rank 994
added: 2026-09-03
updated: 2026-09-03
references: IANA service name registry — port 2781

Something wrong?

This record is maintained by the engineers who use port 2781. 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 :2781, by lookups.

port	service	proto	category	risk	views
:2809	IBM WebSphere WAS Bootstrap RMI	TCP	Web Services	caution	10.9k
:2809	CORBA IIOP URL	TCP	Network Services	caution	7.5k
:2735	NetIQ Monitor Console	TCPUDP	Network Services	caution	4.6k
:2784	WWW development	TCPUDP	Web Services	safe	0
:2718	PN Requester 2	TCPUDP	—	safe	0
:2726	TAMS	TCPUDP	—	safe	0
:2720	wkars	TCPUDP	—	safe	0
:2734	CCS Software	TCPUDP	—	safe	0

risk mix of the 8 listed

safe63%
caution38%

0 of 8 encrypted

Port :2781whosells

Technical Details

Security Information

Related Ports

Port 2781whosells