Sites using PostalPinCode API 
Free public API for looking up Indian postal PIN codes and post office branch details, returning JSON.
Get told when a new site ships with PostalPinCode API.
Stackdar watches every launch we detect and sends you the ones using PostalPinCode API, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work94 sites
89 found by StackScope, 5 via launch platforms
- StackScope Wider Web 74
- StackScope Discovery (Indie) 15
- Product Hunt 5
PostalPinCode API has been detected on 94 launches we've crawled. The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Anavrin — From Good Mornings till Late Night Cravings, yesterday.
It's most commonly paired with HSTS, Razorpay, and Tailwind CSS. By product type, the launches using it are most often E-commerce (71%), Finance (7%), and Health (5%).
What kind of products ship with PostalPinCode API
56 launches
Domain endings using PostalPinCode API
93 sites
- .com 44.09%
- .in 43.01%
- .online 4.30%
- .ai 1.08%
- .bio 1.08%
- .co 1.08%
- .design 1.08%
- .org 1.08%
- .shop 1.08%
- .store 1.08%
Country
51 of 94 sites, where we are semi-confident of the country.
-
India
98.04%
-
United Kingdom
1.96%
Share of new sites using PostalPinCode API
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.
The shaded parts of the chart are measured against a different set of sites.
Grey: until 8 July 2026 we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: on 10 September 2026 we improved our infrastructure so we can index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from that date. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time, so it can step at these lines without the technology itself changing. For a single continuous measure, switch to launch platforms.
Data API leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
LocalLogic
|
0.06% | 24.31% |
| #2 | ▼2 |
The Movie Database
|
0.02% | 6.14% |
| #3 | ▲1 |
Daum Postcode
|
0.01% | 5.23% |
| #4 | ▲6 |
data.gouv.fr
|
0.01% | 3.43% |
| #5 | ▼2 |
ViaCEP
|
0.01% | 3.29% |
| … | ||||
| #25 | ▼14 |
PostalPinCode API
Current page
|
<0.01% | 0.78% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Data API tool.Among September launches it ranked #34 in Data API, down from #20 in August. All 1352 in Data API →
Often used with
| Tool | Sites |
|---|---|
| HSTS | 88 |
Razorpay
|
59 |
Tailwind CSS
|
49 |
Google Fonts
|
48 |
Google Search Console
|
40 |
Tools most often detected on the same sites as PostalPinCode API.
Recent launches we can show
20 of the 94 sites using PostalPinCode API are product launches we list individually. The other 74 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works
Panchhe — Dressed with love, stitched in India
E-commerce
Snehito — Care and companionship for your loved ones in Kerala
Health
Bilty Transport Management System
Productivity
Past Weather by Date & Place | PastWeatherInfo
Kypson
E-commerce
The Maison World
E-commerce
PrintFlow - Print Commerce & Operations Platform for India
Vitta — Run Your Business. File Your Own GST. No Operator. | AI Bookkeeping & GST Software
Finance
RemoteHive — The operating system for remote careers
Hiring & HR
KAIR QR
HandToHand Loans Platform
Finance
Showing the most recent 12 of 20.
The StackScope API serves all 94 sites using PostalPinCode API, filterable and exportable, from £15 a month.