Port 44323Performance Co-Pilot Web API

HTTP/JSON API for querying Performance Co-Pilot metrics and metadata.

transport: tcp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

also known as pmwebapi, PCP Web API, PCP client API

Technical Details

what runs on :44323

The PCP Web API exposes Performance Co-Pilot client operations over HTTP, returning API results as JSON. It listens on TCP port 44323 by default; requests use ordinary HTTP framing rather than PCP's native wire protocol. The API provides access to PCP metrics and metadata, typically through a PCP deployment that also uses services such as pmcd (TCP 44321) or pmproxy (TCP 44322). The HTTP binding is not encrypted by default, and deployments may configure a different listening port.

Security Information

exposure of :44323

risk score

2/ 10safe

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

web services averages 3.1 across 247 ports — this one sits 1.1 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

tcp

every listening transport is another surface to filter at the edge

security overview

An exposed API can reveal performance and system-operational data, so restrict access to trusted networks and use a protected transport or proxy when clients cross untrusted networks. Do not assume that HTTP traffic is encrypted; authentication and access controls depend on the deployment.

Record

iana registry entry

port: :44323
service: Performance Co-Pilot Web API
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Web Services System
usage: This port is the PCP Web API listener, used by HTTP clients and dashboards to query performance metrics and related metadata. It is a niche service found on systems running Performance Co-Pilot; it is not commonly exposed in internet-wide scans.
lookups: 0rank 993
added: 2026-10-21
updated: 2026-10-21
references: IANA service name registry — port 44323

Something wrong?

This record is maintained by the engineers who use port 44323. 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 2026-10-21.

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 247 in web services →

the 8 most looked-up other ports in web services — 247 ports carry that label.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:8000	Intel Remote Desktop / Alternate HTTP Port	TCP	Web Services	safe	84.3k
:8888	NewsEDGE	TCPUDP	Web Services	caution	83.3k
:8888	HTTP Alternative Port	TCP	Web Services	caution	76.5k
:8888	GNUmp3d Streaming HTTP	TCP	Web Services	caution	76.3k
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:80	HTTP	TCPUDP	Web Services	caution	67.3k

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :44323Performance Co-Pilot Web API

Technical Details

Security Information

Related Ports

Port 44323Performance Co-Pilot Web API