PIN Code Validator
PIN Code Validator: free, instant and private. The first digit alone narrows the address to a region — 1 for Delhi–Punjab, 4 for Maharashtra, 6 for Tamil Nadu–Kerala.
How the PIN Code Validator works
The PIN Code Validator takes PIN code and returns the answer instantly — no button to hunt for, no page reload. The first digit alone narrows the address to a region — 1 for Delhi–Punjab, 4 for Maharashtra, 6 for Tamil Nadu–Kerala. 9 is reserved for the Army Postal Service, so a civilian form with a 9xxxxx PIN is immediately suspect.
Enter your own numbers to replace the example values; the result panel updates as you type. Everything runs in this single page, so nothing you enter leaves your device.
Formula used
PIN = region digit + sub-region + sorting district + 3-digit office
| Symbol | Meaning |
|---|---|
| first digit | one of 9 postal regions |
| first three digits | the sorting district under that region |
The first digit alone narrows the address to a region — 1 for Delhi–Punjab, 4 for Maharashtra, 6 for Tamil Nadu–Kerala. 9 is reserved for the Army Postal Service, so a civilian form with a 9xxxxx PIN is immediately suspect.
Inputs used: PIN code.
Worked example
Take the default example — pin code of 110001:
- Verdict: true
- Details: Region: Delhi, Haryana, Punjab, Himachal, J&K · sorting district: 110 · delivery office: 001
- region: Delhi, Haryana, Punjab, Himachal, J&K
Frequently asked questions
- What formula does the PIN Code Validator use?
- It uses PIN = region digit + sub-region + sorting district + 3-digit office, where first digit is the one of 9 postal regions; first three digits is the the sorting district under that region.
- Is the PIN Code Validator free?
- Yes. There is no signup, no usage limit and no watermark — the calculator runs entirely in your browser.
- How do I read the result?
- The first digit alone narrows the address to a region — 1 for Delhi–Punjab, 4 for Maharashtra, 6 for Tamil Nadu–Kerala. 9 is reserved for the Army Postal Service, so a civilian form with a 9xxxxx PIN is immediately suspect.
- Does the PIN Code Validator store or send my data?
- No. Every calculation happens locally in the page, so the numbers you type are never uploaded or logged.
- Does it work on a phone and offline?
- Yes — the page is a single lightweight file that adapts to any screen size. Once it has loaded it keeps working without a network connection.