PAN, GSTIN & Pin Code Validation

Perform instant client-side and server-side algorithmic validation on key Indian business and identity identifiers without calling costly third-party APIs.

Supported Formats

**PAN (Permanent Account Number)**: Checks 10-character alphanumeric structure (e.g., `ABCDE1234F`), verifies 4th character entity type (`P` for individual, `C` for company).

**GSTIN**: 15-character Goods and Services Tax Identification Number including state code check and checksum character verification.

**PIN Code**: 6-digit postal code mapping to valid postal circles.

**Indian Phone Numbers**: Validates 10-digit mobile series prefixed with `+91`.

TypeScript Validation Example

import { validatePAN, validateGSTIN } from '@authsetu/core';

const panResult = validatePAN('ABCDE1234F');
console.log(panResult.isValid, panResult.entityType); // true, "individual"

const gstResult = validateGSTIN('29ABCDE1234F1Z5');
console.log(gstResult.isValid, gstResult.state); // true, "Karnataka"

PAN, GSTIN & Pin Code Validation

Perform instant client-side and server-side algorithmic validation on key Indian business and identity identifiers without calling costly third-party APIs.

Supported Formats

**PAN (Permanent Account Number)**: Checks 10-character alphanumeric structure (e.g., `ABCDE1234F`), verifies 4th character entity type (`P` for individual, `C` for company).

**GSTIN**: 15-character Goods and Services Tax Identification Number including state code check and checksum character verification.

**PIN Code**: 6-digit postal code mapping to valid postal circles.

**Indian Phone Numbers**: Validates 10-digit mobile series prefixed with `+91`.

TypeScript Validation Example

import { validatePAN, validateGSTIN } from '@authsetu/core';

const panResult = validatePAN('ABCDE1234F');
console.log(panResult.isValid, panResult.entityType); // true, "individual"

const gstResult = validateGSTIN('29ABCDE1234F1Z5');
console.log(gstResult.isValid, gstResult.state); // true, "Karnataka"

PAN, GSTIN & Pin Code Validation

PAN, GSTIN & Pin Code Validation

Supported Formats

TypeScript Validation Example

On This Page

PAN, GSTIN & Pin Code Validation

PAN, GSTIN & Pin Code Validation

Supported Formats

TypeScript Validation Example

On This Page