How to Get FASTag Details Using Just a Vehicle Number

If you run a fleet, operate a logistics platform, or build vehicle-related software, you've probably needed to check whether a vehicle has an active FASTag — and what bank issued it, what class it's registered under, or whether it's been blacklisted.

The traditional way? Log into NPCI's portal, enter details manually, wait. Not exactly something you can do at scale.

This guide covers how to retrieve FASTag details programmatically using a vehicle registration number — what data you get back, what it means, and how to integrate it into your product.

What is FASTag, exactly?

FASTag is India's RFID-based electronic toll collection system, managed by NHAI (National Highways Authority of India) and NPCI (National Payments Corporation of India).

Every vehicle traveling on Indian national highways is required to have a FASTag sticker on its windscreen. When the vehicle passes through a toll plaza, the tag is read automatically and the toll amount is deducted from the linked prepaid account. No stopping, no cash.

The system runs on NETC — the National Electronic Toll Collection network — which connects all toll plazas, issuer banks, and acquirer banks into a single interoperable system.

Since December 2019, FASTag has been mandatory for all vehicles. NHAI's "One Vehicle, One Tag" policy (KYV — Know Your Vehicle) ensures each tag is uniquely linked to one vehicle via its registration number and chassis number.

What data can you get from a vehicle number?

When you look up a vehicle registration number against the NPCI NETC system, here's what comes back:

This is all verified against NPCI's live NETC database. Not cached, not scraped — real-time.

Why does tag status matter?

The tag_status field is arguably the most important piece of data:

• Active (A): FASTag is working. Toll deductions happen normally.
• Inactive (I): Tag exists but isn't functional. Could mean insufficient balance, expired tag, or bank-side deactivation.
• Blacklisted (B): The vehicle has been flagged. This could mean KYV failure (tag linked to wrong vehicle), unpaid tolls, or regulatory action.

For fleet operators, a blacklisted tag means that vehicle will be stopped at toll plazas and charged double (as per NHAI rules). For lenders and insurance companies, a blacklisted tag is a red flag during due diligence.

Understanding vehicle classes

How to check FASTag details via API

Here's how to look up FASTag data using TheVerifico's API. You need one thing: the vehicle registration number.

Using cURL

curl -X POST https://api.theverifico.com/api/v1/verify/fastag \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"vehicle_number": "MH12AB1234"}'

Using Python

import requests

response = requests.post(
"https://api.theverifico.com/api/v1/verify/fastag",
headers={
"Authorization": "Bearer YOUR_API_KEY",
"Content-Type": "application/json"
},
json={"vehicle_number": "MH12AB1234"}
)

data = response.json()
print(f"Tag ID: {data['data']['tag_id']}")
print(f"Vehicle: {data['data']['reg_number']}")
print(f"Tag Status: {data['data']['tag_status']}")
print(f"Vehicle Class: {data['data']['vehicle_class']}")
print(f"Issuer Bank: {data['data']['issuer_bank']}")
print(f"Commercial: {data['data']['commercial_vehicle']}")

Using Node.js

const axios = require('axios');

const response = await axios.post(
'https://api.theverifico.com/api/v1/verify/fastag',
{ vehicle_number: 'MH12AB1234' },
{ headers: { 'Authorization': 'Bearer YOUR_API_KEY' } }
);

const { data } = response.data;
console.log(`Tag ID: ${data.tag_id}`);
console.log(`Status: ${data.tag_status}`);
console.log(`Vehicle Class: ${data.vehicle_class}`);
console.log(`Bank: ${data.issuer_bank}`);

No file upload, no OCR, no image processing. Just pass the vehicle number to the FASTag verification API, get structured FASTag details by vehicle number back as JSON.

Response time is under 500ms.

Real-world use cases

Fleet management

Fleet operators managing hundreds of vehicles need to know which tags are active, which are about to expire, and which have been blacklisted. Companies like Fleetzz use FASTag verification to run daily health checks across their entire fleet — catching problems before vehicles get stuck at toll plazas.

Bulk verification means you can check 500 vehicles in under 5 minutes instead of manually logging into NPCI for each one.

Used vehicle marketplaces

Before listing a used vehicle, platforms like Cars24 or OLX Autos can verify the FASTag status as part of their inspection checklist. A blacklisted tag might indicate unpaid dues or ownership disputes. The vehicle class data also confirms whether the vehicle is classified correctly (a commercial vehicle being sold as private is a red flag).

Insurance underwriting

Motor insurance companies can cross-check vehicle class and commercial status during policy issuance. If someone claims a vehicle is private but the FASTag shows it's registered as commercial (T), that's a material misrepresentation that affects premium calculation.

Logistics platforms

For platforms connecting shippers with truck operators, verifying FASTag data helps estimate toll costs per route, confirm vehicle classification, and ensure the truck actually has an active tag before dispatching it on a long-haul trip.

Lending and vehicle finance

NBFCs and banks financing commercial vehicles can verify FASTag status as part of their due diligence. A blacklisted tag or inactive status could indicate the borrower isn't maintaining the vehicle's compliance — relevant for risk assessment.

Pricing

FASTag verification costs ₹2.00 per lookup at standard volume. Volume discounts apply:

• Standard: ₹2.00/lookup
• 1,000+ lookups/month: ₹1.50/lookup
• 10,000+ lookups/month: ₹1.00/lookup

You're only charged for successful verifications. If the vehicle number doesn't match any FASTag in the NETC system, you're not billed.

Getting started

1. Sign up at theverifico.com — you get 10 free verification credits
2. Get your API key from the dashboard
3. Make your first call using any of the code samples above
4. Go to production — no separate approval process, your sandbox key works in production

The entire integration takes about 15 minutes if you're just doing a basic FASTag details lookup by vehicle number. For batch processing or webhook-based async verification, check the API documentation.

Related guides

• PAN Card Verification API: A Developer's Integration Guide
• How to Verify a GST Number via API: Stop Vendor Fraud

Frequently asked questions

Can I check FASTag details without the vehicle owner's consent? FASTag data retrieved via NETC is limited to tag-level information (tag ID, status, class, bank). It does not include personal information like the owner's name, phone number, or bank balance. This is publicly queryable data similar to checking a vehicle's registration status on Parivahan.

What if a vehicle doesn't have a FASTag? The API returns an appropriate error code indicating no FASTag was found for that registration number. You're not charged for these lookups.

How fresh is the data? It's real-time. The API queries NPCI's NETC system directly — not a cached or periodic snapshot. If a tag was blacklisted 5 minutes ago, the API reflects that.

What's the difference between Inactive and Blacklisted? Inactive (I) usually means the tag account has insufficient balance or the bank has temporarily deactivated it. Blacklisted (B) is more serious — it typically means KYV failure, regulatory action, or fraud detection. A blacklisted vehicle faces double toll charges at plazas.

Does this work for all vehicle types? Yes — private cars, commercial trucks, buses, multi-axle vehicles, construction equipment. Any vehicle with a FASTag registered on the NETC system.