Port 2093NBX CC

NBX CC is an assigned call-control service for NBX systems.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 6/10
lookups: 0

Technical Details

what runs on :2093

NBX Call Control uses both TCP and UDP on port 2093 for signaling between components of an NBX telephony system. It is normally encountered alongside the related NBX service ports 2094 and 2095. The protocol is a legacy, product-specific signaling protocol rather than a general VoIP standard, and normal deployments should not be assumed to provide modern encrypted transport.

Security Information

exposure of :2093

risk score

6/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

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

Do not expose this legacy telephony control service directly to the Internet. An exposed endpoint can reveal PBX information and may permit denial of service or, depending on the system and firmware, unauthorized signaling and toll-fraud activity; restrict it to trusted voice-network hosts or a VPN.

Record

iana registry entry

port: :2093
service: NBX CC
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 6/10risk
category: uncategorised
usage: This port is associated with legacy 3Com NBX business telephone systems and PBX appliances, where it carries call-control signaling. It is uncommon on modern networks; an unrelated application may also be using the port.
lookups: 0rank 993
added: 2026-09-02
updated: 2026-09-22
references: IANA service name registry — port 2093

Something wrong?

This record is maintained by the engineers who use port 2093. 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 2026-09-22.

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

browse categories →

ports registered around :2093, by lookups.

port	service	proto	category	risk	views
:2031	Mobrien Chat	TCPUDP	Web Services	caution	27.7k
:2105	eklogin Kerberos Remote Login	TCPUDP	Security	safe	22.1k
:2083	cPanel SSL	TCPtls	Web Services	safe	20.3k
:2105	Zephyr Notification Service (hm-serv)	TCPUDP	Network Services	caution	19.0k
:2082	Infowave Mobility	TCP	Network Services	caution	17.7k
:2087	WHM SSL	TCPtls	Web Services	caution	17.7k
:2096	cPanel SSL Webmail	TCPtls	Web Services	safe	17.4k
:2053	knetd Demultiplexer	TCP	Security	safe	17.2k

risk mix of the 8 listed

safe50%
caution50%

3 of 8 encrypted

Port :2093NBX CC

Technical Details

Security Information

Related Ports

Port 2093NBX CC