GST Verification

Verify any GSTIN instantly — legal name, trade name, address, registration status, constitution & GPS coordinates.

Endpoint

GET/gst?number=19HKJPM4450C1Z1

Verify GSTIN — complete taxpayer profile.

Query Parameters

Parameter	Type	Required	Description
number	string	✅	15-character GSTIN

Example

curl "https://apiw.proxynex.pro/gst?number=19HKJPM4450C1Z1"

{
  "status": "ok",
  "gstin": "19HKJPM4450C1Z1",
  "trade_name": "GENX COMPUTER",
  "legal_name": "Arnab Modak",
  "registration_status": "Active",
  "registration_date": "22/06/2024",
  "constitution": "Proprietorship",
  "taxpayer_type": "Regular",
  "nature_of_business": ["Retail Business", "Others"],
  "state": "West Bengal",
  "address": "C/O Haradhan Modak, Radhanagar, Ghatal",
  "lat": 22.666033,
  "lon": 87.732022
}

GSTIN Format

19 HKJPM4450C 1 Z 1
│  └───PAN───┘ │ │ └ check digit
│              │ └ entity number
│              └ Z (default)
└ 2-digit state code

Position	Meaning
1–2	State code (19 = West Bengal)
3–12	PAN of the taxpayer
13	Entity number (1–9)
14	Z (default letter)
15	Check digit

Malformed input returns 400.