17 live Python 3.9.21 sites, ready to export.
That's how many Python 3.9.21 websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.
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Every Python 3.9.21 website we detected in the United States.
Only sites where a personal, company-hosted email was found.
Sites with at least one personnel LinkedIn profile.
Start with the highest-traffic end of the dataset.
Limit results to Python 3.9.21 websites on .com domains.
Only sites where an organisation phone number was found.
Websites Using Python 3.9.21
A sample of live Python 3.9.21 sites from our latest crawl, with the other technologies each one runs.
| Domain | Also runs | Crawl Date |
|---|---|---|
| cmarz.org | August 17, 2026 | |
| na-basin.org | August 17, 2026 | |
| isit5oclocksomewhere.com | August 17, 2026 | |
| thomas-zastrow.de | August 15, 2026 | |
| oaas.fr | August 12, 2026 | |
| usglobec.org | August 12, 2026 | |
| eva-hr.com | August 10, 2026 | |
| dlyog.com | July 21, 2026 | |
| cisma.it | July 21, 2026 | |
| tecnoiglesia.net | July 20, 2026 |
How many websites use Python 3.9.21?
We found Python 3.9.21 on 17 websites in our August 2026 crawl, across 7 countries.
Which countries use Python 3.9.21 the most?
By number of websites, the top countries are United States (53%, 9 sites), Singapore (12%, 2 sites), Germany (6%, 1 site), France (6%, 1 site) and Indonesia (6%, 1 site). Together they account for 82% of the 17 Python 3.9.21 sites we track. 47% of the sites are in English, and .com is the most used domain ending, on 29% of them.
Where are Python 3.9.21 websites hosted?
The networks carrying the most Python 3.9.21 sites are Woods Hole Oceanographic Institution (5 sites), Hetzner Online GmbH (2 sites) and AS40676 (1 site).
What technologies are used with Python 3.9.21?
Across the 17 Python 3.9.21 sites we track, the technologies most often found alongside it are Flask (100%, 17 sites), jQuery (29%, 5 sites), DreamWeaver (24%, 4 sites), HTTP/3 (18%, 3 sites) and jsDelivr (18%, 3 sites).
Breakdown of Python 3.9.21 websites
What else they run, plus their language, hosting network, domain extension and country.
| Technology | Sites |
|---|---|
Flask | 17 |
jQuery | 5 |
DreamWeaver | 4 |
HTTP/3 | 3 |
jsDelivr | 3 |
Bootstrap | 2 |
| HSTS | 2 |
Less | 2 |
Odoo | 2 |
PHP | 2 |
PostgreSQL | 2 |
SWFObject | 2 |
Google Analytics | 1 |
Lightbox | 1 |
MkDocs | 1 |
Plausible | 1 |
Plesk | 1 |
Popper | 1 |
React | 1 |
Swagger UI | 1 |
WordPress | 1 |
Yii | 1 |
cdnjs | 1 |
|
jQuery CDN | 1 |
|
jQuery Migrate | 1 |
| Language | Sites |
|---|---|
| English | 8 |
| Welsh | 1 |
| German | 1 |
| Esperanto | 1 |
| Indonesian | 1 |
| Japanese | 1 |
| Dutch | 1 |
| Somali | 1 |
| Spanish | 1 |
| ASN | Sites |
|---|---|
| Woods Hole Oceanographic Institution | 5 |
| Hetzner Online GmbH | 2 |
| AS40676 | 1 |
| Amazon.com, Inc. | 1 |
| B2 Network SARL | 1 |
| DigitalOcean, LLC | 1 |
| Frontier Communications of America, Inc. | 1 |
| IONOS SE | 1 |
| Oracle Corporation | 1 |
| PT. EXABYTES NETWORK INDONESIA | 1 |
| SAKURA Internet Inc. | 1 |
| velia.net Internetdienste GmbH | 1 |
| TLD | Sites |
|---|---|
| com | 5 |
| net | 4 |
| org | 4 |
| 226 | 1 |
| de | 1 |
| fr | 1 |
| it | 1 |
| Country | Sites |
|---|---|
| 🇺🇸 United States | 9 |
| 🇸🇬 Singapore | 2 |
| 🇩🇪 Germany | 1 |
| 🇫🇷 France | 1 |
| 🇮🇩 Indonesia | 1 |
| 🇮🇹 Italy | 1 |
| 🇯🇵 Japan | 1 |
| Unknown | 1 |
FAQ
Answers drawn from our latest crawl of Python 3.9.21 websites. Anything else, email us and we will look it up.
Through our own crawl, which checks each site's HTML, scripts and headers rather than relying on self-reported data.