Know this GST number.

Paste any Indian GSTIN, PAN or company CIN. You get the registration, the jurisdiction, what they actually sell, and how reliably they file — read live, free, with no login.

Filing history, not just a name Most free GSTIN checkers stop at “Active”. This one pulls up to 36 GSTR-1 and GSTR-3B filings, works out the statutory due date for each, and tells you how many were late and by how long.
One PAN, all of India Enter a PAN and get every GSTIN that entity holds in every state, with status. Useful when a vendor invoices you from a branch you have never seen before.
Nothing stored, nothing sold Every result is fetched at the moment you ask, from public APIs. There is no taxpayer database sitting on this server, no account, and no export of your searches.

Tools

GSTIN validator & decoderCheck the check digit and pull apart every character — state, PAN, holder type, registration number.GST calculatorAdd or strip GST at any slab, split into CGST/SGST or IGST, with cess.HSN & SAC decoderWhat a code means, its chapter, and how many digits you must print on an invoice.IFSC lookupBank, branch, address, MICR, SWIFT and which rails that branch supports.PIN code lookupEvery post office on a PIN with district, division and delivery status.GST due-date calendarWhat is due next, for monthly and QRMP filers, calculated from today.Bulk GSTIN checkerPaste a vendor list, get status and filing health for all of them, export CSV.PAN decoderWhat the fourth and fifth characters of a PAN tell you about the holder.

Before you trust a GSTIN

Three things decide whether an invoice from a supplier will actually give you input tax credit:

  • Is the registration live on the invoice date? A cancelled GSTIN still returns a name and address. Check the cancellation date, not just the status word.
  • Does the legal name match the invoice? Trade name and legal name often differ; both are shown on every result page here.
  • Do they actually file? Your credit depends on the supplier reporting the invoice in their GSTR-1. A supplier three months behind on GSTR-3B is the single strongest warning sign, and it is the thing almost no free tool shows you.

This site is an information tool. It is not tax advice, and a result here is not a substitute for the GST portal's own search before you file or pay.