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Client-side ProcessingUpdated 2026-02-11Report issue

Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.

Port Number Lookup

Look up common port numbers and their services.

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About Port Number Lookup

Look up common port numbers and their services. Look up common port numbers and their associated services online for free. Identify well-known, registered, and dynamic ports for HTTP, SSH, DNS, and more. Provides instant lookups against a curated, built-in reference database that requires no internet connection. Results are displayed in a clear, structured format for easy reading and copying. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.

Related tools: HTTP Status Code Lookup, MIME Type Lookup, ASCII Table Lookup

How to Use Port Number Lookup

  1. Enter the value you want to look up.
  2. The tool searches its database and returns results.
  3. Review the detailed information displayed below.

Frequently Asked Questions

What is Port Number Lookup?
Look up common port numbers and their associated services online for free. Identify well-known, registered, and dynamic ports for HTTP, SSH, DNS, and more.
Where does the lookup data come from?
The reference data is sourced from authoritative and well-maintained databases, standards organizations, and official registries. Data is embedded directly in the tool for instant offline-capable lookups.
How current is the reference data?
The lookup data is updated regularly as part of the tool's release cycle. For data that changes infrequently (such as country codes or HTTP status codes), the embedded dataset is comprehensive and reliable.
Can I search by partial matches?
Yes, the lookup supports partial and fuzzy matching so you do not need to enter the exact value. Start typing and the tool will filter results in real time, making it easy to find what you need.
Is Port Number Lookup free to use?
Yes, all lookups are completely free and unlimited. The reference data is built into the tool, so it works instantly without any account.
Is my data safe when using Port Number Lookup?
Yes, lookups are performed against locally stored data in your browser. No queries or input data are sent to any external server.

Related Tools

HTTP Status Code Lookup
Look up HTTP status codes and their meanings.
MIME Type Lookup
Look up MIME types by file extension.
ASCII Table Lookup
Look up ASCII character codes and symbols.