Postcode Validator
Free online Postcode Validator tool.
About Postcode Validator
Free online Postcode Validator tool.
Postcode Validator checks whether a postal code is formatted correctly for the country you select before you submit an address form. It understands Indian PIN codes, United States ZIP codes, United Kingdom postcodes, Canadian postal codes and several other international patterns, then reports whether the structure matches the official rules covering length, letter and digit placement, and the inward part that follows the space. Wrong entries are highlighted immediately with a short explanation of what went wrong, so a typo in a delivery address never reaches your database. Use it while building checkout forms, cleaning a customer mailing list, or verifying addresses collected through a survey. Postcode Validator runs entirely in your browser, needs no account, and keeps every address you paste private.
How to Use Postcode Validator
- Enter the host, IP address, URL or port you want to inspect.
- Choose any options the tool offers (protocol, count, depth).
- Run the check — results appear as the browser completes the request.
- Copy the report or note down the details you need.
Key Features
- No terminal or admin tools needed — everything happens in the page.
- Clear, readable results instead of raw command output.
- Checks run from your browser, reflecting what a real visitor experiences.
Frequently Asked Questions
Does Postcode Validator support Indian PIN codes and US ZIP codes?
Yes. The validator recognises Indian PIN codes, United States ZIP codes, United Kingdom postcodes, Canadian codes, Australian postcodes and many other national formats. Each entry is checked against length rules, allowed characters and the placement of letters and digits, then marked valid or invalid with a clear reason. You can test one code at a time or paste a column from a spreadsheet to review an entire address list in seconds.
Is Postcode Validator free to use?
Yes. Postcode Validator is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. Postcode Validator runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does Postcode Validator work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.