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Find Supplier Phone Number by GST Number Before a Factory Visit
Find supplier phone number by GST number before a big order and verify it on a site visit: check the factory line, the address and who runs the unit.
GST Identification Number
27ABCDE1234F1Z0
- Legal nameSample Traders Pvt Ltd
- StateMaharashtra (27)
- RegistrationActive
- Phone+91 98XXX XXXXX
- Emailc****@example.com
Illustrative result. Get sample format for live records.
Reading time 4 min
Last reviewed October 2026
Find supplier phone number by GST number takes on a different purpose before a large first order or a long-term contract. At that stage you are not just looking for a way to call the supplier; you are checking that the business is what it claims to be. A phone line answered at a real factory, at the address in the GST record, is one of the simplest signs that a supplier is genuine. A site visit or audit then confirms it in person.
This guide covers how to prepare the phone and address checks before an audit, what to look for on the day, and how to record the results.
Quick answer
- Use the GST record’s places of business as the audit addresses.
- Find the factory’s own landline or office number from independent sources.
- Call that line before the visit to arrange it and confirm the address.
- On site, check the signboard, the activity, and that the line rings there.
- Record what you verified and keep it with the supplier’s file.
Why Phone and Address Belong Together
Fraudulent or overstated suppliers often have a polished mobile number and a website, but no premises of their own, or premises that belong to someone else. A fixed line or a well-established office number tied to the registered address is harder to fake. Combining the two checks, number and place, gives you confidence before any money moves.
Preparing From the GST Record
Search the supplier’s GSTIN and note the principal place of business and all additional places, with the activity listed for each. A manufacturing claim should be backed by a factory or manufacturing activity at an address in a plausible location, such as an industrial area. If the only address is a small office or a residence, ask where production takes place.
Finding an Independent Number
Look for the factory or office line on the supplier’s website, catalogue, letterhead and map listing for that address. Check that the area code matches the city of the address. If the supplier gives you only a salesperson’s mobile, ask for the factory’s landline or the plant manager’s number. Genuine manufacturers have no difficulty providing one.
Need the contact behind a GSTIN?Get the sample format with verified business contact fields.
Arranging the Visit by Phone
Call the factory line to fix the date, and ask for directions to the address in the GST record. Note who answers and how. A call answered with the business’s trade name at the factory is a positive sign. Being redirected to a different address at the last moment is a reason for caution.
On the Day: What to Check
At the premises, check the signboard against the trade name, look for machinery and stock consistent with the goods you are buying, and ask to see the GST registration certificate displayed at the place of business, as the law requires. Ask someone to call the factory line while you are there, or call it yourself, and see whether it rings on site.
People on Site
Meet the person who runs production as well as the salesperson. Ask for their direct numbers and note their names and roles. For companies, compare names with the directors in the corporate registry. For proprietorships and firms, confirm the owner or a partner is involved in the business you are visiting.
Want to see real match quality?See the sample format for your own GST numbers.
Remote Alternatives
When travel is not possible, ask for a live video walk-through started by a call to the factory line, a recent photo of the displayed registration certificate, and references from other buyers whose numbers you can verify. Third-party inspection agencies can visit on your behalf for larger orders.
Recording the Audit
Write a short audit note: date, address visited, the factory number verified, the people met with their roles and numbers, photographs of the board and certificate, and any concerns. Save it with the supplier’s GSTIN. When you reorder months later, you will know exactly which numbers were verified on site.
Have a list of GSTINs?Send a few and we will return matching contact fields.
Related guides
Find Supplier Contact by GSTIN While Sourcing New Manufacturers: a related guide.
Find Supplier Mobile Number by GST Number When a Supplier Goes Silent: a related guide.
Frequently Asked Questions
How do I find supplier phone number by GST number before a factory visit?
Note the places of business in the GST record, then find the factory’s own line from the supplier’s website, letterhead or listing for that address, checking that the area code matches.
Why insist on a factory landline?
A line tied to the registered address is harder to fake than a mobile and supports the supplier’s claim to have premises.
What should I check on site?
The signboard, machinery and stock, the displayed registration certificate, and whether the factory line rings there.
Is displaying the GST certificate required?
Yes. The certificate must be displayed prominently at the principal and additional places of business.
What if I cannot visit?
Ask for a live video walk-through started from the factory line, a photo of the displayed certificate, and verified references.
What should the audit note record?
Date, address, verified numbers, people met, photographs and any concerns.
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Disclaimer: GST To Phone Number is an independent data service. We are not affiliated with, endorsed by or connected to the Goods and Services Tax Network, the Central Board of Indirect Taxes and Customs, or any government department. GSTIN verification should always be confirmed against the official GST portal. Contact data is provided for legitimate business use and must be used in line with applicable telecom, privacy and data-protection rules.