30 in-depth guides · updated regularly

The IndiyaCodes blog

Explainers, how-tos, and comparisons for every tool on the site — pincode, IFSC, RTO, GST, PAN, STD and DIGIPIN, covering real use cases from KYC to logistics to emergency response.

Banking

What is an IFSC code, and how do you read one?

The 11 characters explained — bank, branch and how NEFT/RTGS use them.

Postal

Pincode vs ZIP code: what's actually different

A quick comparison for anyone shipping internationally.

Taxation

How to read a GST number in 10 seconds

Decoded field by field, with the check-digit math.

Addressing

DIGIPIN explained: India's new digital address

How the 10-character code actually works.

Postal

How to Find the Pincode of Any Area in India

A practical guide for locating the correct pincode, including newly developed areas.

Postal

How to Verify a Pincode Before Shipping

A shipping checklist to reduce failed deliveries and courier disputes.

Postal

Head Post Office, Sub Post Office, and Branch Post Office: What's the Difference

India Post's three-tier office hierarchy explained.

Banking

How IFSC Codes Changed After Bank Mergers (SBI, PNB, Canara)

What happened to IFSC codes during India's major bank consolidations.

Banking

NEFT vs RTGS vs IMPS: Which Should You Use and When

A practical decision guide based on amount, urgency, and timing.

Banking

How to Find Your Bank Branch's MICR Code

Where to locate it, and how it differs from IFSC.

Vehicles

Understanding RTO Codes: How Vehicle Registration Works in India

The complete system, from state prefixes to office jurisdiction.

Vehicles

What Is the BH-Series Vehicle Registration and Who Can Get It

The portable registration format explained.

Vehicles

How to Decode a Vehicle Number Plate in India

What each part of a registration number means, step by step.

Vehicles

RTO Office Timings and Documents Checklist for New Vehicle Registration

Everything you need before your RTO visit.

Taxation

PAN Card 4th Letter Explained: Entity Types Decoded

The full entity-type table, with real examples.

Taxation

How to Verify a PAN Card Format Before Submitting KYC

Catch transcription errors before they cause a rejection.

Taxation

GST Registration Numbers by State: Full State Code List Explained

The complete state code reference table.

Taxation

Common GST Number Mistakes and How to Catch Them

The patterns behind most GSTIN entry errors.

Telecom

STD Codes vs Mobile Numbers: Do You Still Need Them

An honest look at STD code relevance today.

Telecom

How to Call India from Abroad: Complete ISD Code Guide

The correct dialing sequence for landlines and mobiles.

Addressing

Using DIGIPIN for Emergency Services and Deliveries

Real-world applications of precise location encoding.

Postal

District-Wise Pincode Lookup: Finding All Pincodes in Your District

Browsing an entire district's postal coverage at once.

Postal

How E-Commerce Companies Use Pincode Serviceability Checks

Why the same pincode shows different results on different sites.

Postal

A Complete Guide to Indian Postal Codes for NRIs and International Shippers

Everything international senders need to know.

Banking

What Is a MICR Code? A Complete Explainer

The technology and structure behind cheque clearing.

Taxation

What Is GSTIN and How Did It Replace the Old VAT/TIN System

How India unified its fragmented state tax registration.

Postal

The History of India's Pincode System: How It Was Designed

The 1972 origins of India's 6-digit postal code.

Banking

How RBI Decides Bank Holidays in India

The legal framework behind national and state bank closures.

Vehicles

Why India's Vehicle Registration Format Has Evolved Over Time

From early numbering to today's portable BH-series.

Postal

Understanding Postal Circles, Regions, and Divisions in India

India Post's administrative hierarchy explained.