Port 6668IRC

IRC servers use TCP port 6668 for Internet Relay Chat.

transport: tcp
in transit: cleartext
assignment: official
risk: 4/10
lookups: 0

Technical Details

what runs on :6668

IRC is a line-oriented text protocol carried over TCP. A client opens a connection and exchanges commands and replies, typically beginning with registration commands such as NICK and USER; messages are delimited by CRLF. Port 6668 is within the registered IRC port range 6665–6669, but deployments may choose other ports. IRC on this port is not encrypted by default; TLS is commonly offered on a separate port such as 6697.

Security Information

exposure of :6668

risk score

4/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

voice and chat averages 3.3 across 182 ports — this one sits 0.7 above.

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

Plaintext IRC traffic can be observed or modified by an on-path attacker, including messages and credentials if the server uses password-based authentication. IRC servers are intentionally reachable on the internet when serving public networks, but should be configured to prevent unauthorized relaying and abuse; use TLS where confidentiality is needed.

Record

iana registry entry

port: :6668
service: IRC
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 4/10caution
category: Voice and Chat
usage: Port 6668 is in the IANA-registered range commonly used by Internet Relay Chat (IRC) servers. Engineers may see it in IRC client connections or server-to-server traffic; many networks also use other ports, including 6667 and TLS-enabled 6697.
lookups: 0rank 993
added: 2026-10-05
updated: 2026-10-05
references: IANA Service Name and Transport Protocol Port Number Registry
RFC 2812: Internet Relay Chat: Client Protocol

Something wrong?

This record is maintained by the engineers who use port 6668. 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 2026-10-05.

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

all 182 in voice and chat →

the 8 most looked-up other ports in voice and chat — 182 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 :6668IRC

Technical Details

Security Information

Related Ports

Port 6668IRC