Port 22555VocalTec Internet Phone

UDP 22555 is associated with VocalTec Internet Phone, a legacy proprietary application for voice calls over the internet.

inVoice and Chat

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

also known as vocaltec-phone

1 other service is registered on port 22555. compare all 2 →

Technical Details

what runs on :22555

IANA assigns UDP 22555 to VocalTec Internet Phone. The application carried voice-call traffic over IP using its proprietary protocol; it is not a standardized, generally interoperable VoIP service. Publicly established details about its packet framing and handshake are limited, so an open UDP port alone does not identify a working VocalTec endpoint.

Security Information

exposure of :22555

risk score

1/ 10safe

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

voice and chat averages 3.2 across 199 ports — this one sits 2.2 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

udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Treat an unexpected listener as a legacy voice service and investigate the host rather than assuming it is a modern VoIP system. Do not expose it to the internet unless it is deliberately required: the software is obsolete, and you should not assume its traffic is encrypted or protected by current security controls.

Record

iana registry entry

port: :22555
service: VocalTec Internet Phone
transport: UDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: Voice and Chat
usage: This assignment is for VocalTec Internet Phone, an early internet telephony application that let users make voice calls over IP. It is a legacy service and is not commonly encountered on present-day networks.
lookups: 0rank 993
added: 2026-10-18
updated: 2026-10-18
references: IANA service name registry — port 22555

Something wrong?

This record is maintained by the engineers who use port 22555. 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
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edit this record →back to the registry

Related Ports

all 199 in voice and chat →

the 8 most looked-up other ports in voice and chat — 199 ports carry that label.

port	service	proto	category	risk	views
:9090	Openfire Admin Console	TCP	Web Services	caution	34.2k
:1513	Garena Gaming	TCPUDP	Gaming	caution	33.1k
:9091	Openfire Admin Console (SSL)	TCPtls	Web Services	caution	28.3k
:2031	Mobrien Chat	TCPUDP	Web Services	caution	27.7k
:1720	H.323 Signaling	TCP	Network Services	caution	26.5k
:6005	Camfrog Chat	TCP	Voice and Chat	caution	25.2k
:3001	Miralix Phone Monitor	TCP	Network Services	caution	21.7k
:9009	Pichat Server	TCPUDP	Network Services	caution	19.7k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :22555VocalTec Internet Phone

Technical Details

Security Information

Related Ports

Port 22555VocalTec Internet Phone