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🔌 Summarize Windows sockets, states, and process IDs

Netstat Connection Analyzer

Analyze Windows netstat -ano output locally to summarize listening ports, established connections, states, public remote endpoints, and PIDs.

Updated July 26, 2026✓ Free to useLocal browser processing
🔒 Local browser processing · No input upload

Analyze netstat connections

Local-onlyRuns in your browser. Pasted text and selected files stay on this device.
About this utility

How does the Netstat Connection Analyzer work?

Windows netstat -ano lists local and remote endpoints, connection states, and owning process IDs. This analyzer turns common TCP and UDP rows into a searchable summary table.

It helps users identify which PID should be investigated next without making a malware verdict from network activity alone.

State counts

Counts listening, established, and other recognized TCP states.

PID summary

Groups parsed rows by owning process ID.

Endpoint context

Counts rows that use public remote endpoints while preserving caution.

Better results

Best practices before using the result

  1. Capture netstat output while the relevant application or symptom is active.
  2. Use tasklist /fi "PID eq <number>" or Task Manager to map a PID to a process.
  3. Verify file path, publisher signature, install source, and expected behavior before blocking or deleting anything.

The analyzer reports only evidence found in the supplied content. “Not detected” does not prove a setting, component, or problem is absent.

Common scenarios

When this utility is useful

Unknown listening portFind the PID associated with a local listening socket.
Active connectionsSee which rows are established to public endpoints.
Firewall reviewCollect protocol, local port, state, and PID before creating a rule.
Support snapshotShare a redacted connection table rather than an unstructured terminal capture.
Continue troubleshooting

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Related utilityPort Lookup & Firewall HelperReview common port purposes and firewall guidance.Related utilityWindows Process LookupResearch common Windows process names.Related utilityOpen Port CheckerTest a public TCP port from the server side.
Common questions

Frequently asked questions

Does a listening port mean my computer is hacked?

No. Many legitimate services listen locally or on the network. Identify the PID and verify the signed executable and purpose.

Why does UDP have no connection state?

UDP is connectionless, so Windows netstat rows usually show endpoints and PID without TCP-style states.

Can this tool identify malware?

No. Netstat is one source of evidence and cannot establish a malware verdict by itself.

Is the output uploaded?

No. Pasted or selected text is parsed locally in your browser.