International ID Checker

What is the International ID Checker?

The International ID Checker is a browser-based utility for checking supported identity number formats from different countries. It analyzes only information that is encoded or mathematically derivable from the number.

Supported Countries

• 🇱🇰 Sri Lanka NIC — birthday, gender, age and old-format voter letter.
• 🇮🇳 India Aadhaar — format and checksum check only.
• 🇨🇳 China Resident ID — birth date, gender and administrative division code.
• 🇰🇷 South Korea RRN — birth date and gender.
• 🇯🇵 Japan My Number — format check only.
• 🇵🇹 Portugal Citizen Card — basic document-number structure check.
• 🇺🇸 USA SSN — format and structural checks only.
• 🇨🇦 Canada SIN — format and checksum validation.
• 🇬🇧 UK National Insurance Number — format and prefix/suffix structure check.

No Fake Information

Not every national identification number contains a person's birthday, gender, town or address. When information is not encoded, this tool displays "Not encoded in ID" instead of guessing.

Privacy

This tool is designed to process the entered number locally inside the browser. It does not require an account or a government database connection for format or structural decoding. Third-party advertising scripts may independently collect data according to their own policies.