Port 2976CNS Server Port

An obscure TCP/UDP assignment labelled CNS Server Port, with no established public protocol or common deployment known.

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

also known as cns-srv-port

Technical Details

what runs on :2976

CNS Server Port is registered on port :2976 over tcp and udp to Ram Golla. 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 :2976

this machine

# linux
sudo ss -tulpn 'sport = :2976'

# macos / bsd
sudo lsof -nP -i :2976

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :2976

another host

nmap -sV -p T:2976 <host>
sudo nmap -sU -sV -p U:2976 <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 :2976

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 :2976 yet

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

Record

iana registry entry

port: :2976
service: CNS Server Port
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA lists TCP and UDP port 2976 as “CNS Server Port,” assigned to Ram Golla. No established public protocol behavior or common software using it is known; it has not appeared open in nmap's internet-wide scan data.
lookups: 0rank 993
added: 2026-09-26
updated: 2026-09-26
references: IANA service name registry — port 2976

Something wrong?

This record is maintained by the engineers who use port 2976. 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 2026-09-26.

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 :2976, by lookups.

port	service	proto	category	risk	views
:3001	Miralix Phone Monitor	TCP	Network Services	caution	21.7k
:3001	Opsware Satellite	TCP	Network Services	caution	17.4k
:3000	Miralix License Server	TCP	Network Services	caution	15.4k
:3008	Miralix Proxy	TCPtls	Security	caution	12.8k
:3000	Distributed Interactive Simulation	UDP	Network Services	caution	11.7k
:2948	WAP Push MMS	TCPUDP	Network Services	safe	11.7k
:3017	Miralix IVR & Voicemail	TCP	Network Services	caution	11.5k
:3006	Miralix SMS Connector	TCP	Mobile	caution	11.3k

risk mix of the 8 listed

safe13%
caution88%

1 of 8 encrypted

Port :2976CNS Server Port

Technical Details

Security Information

Related Ports

Port 2976CNS Server Port