H2O 2.x
H2O is a fast and secure HTTP/2 server written in C by Kazuho Oku.
148 live H2O 2.x sites, ready to export.
That's how many H2O 2.x websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.
Pick a ready-made template, or build your own filters in the Lead List Exporter and pay only for the rows you export.
Open the Lead List ExporterEvery H2O 2.x website we detected in the US.
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 H2O 2.x websites on .com domains.
Only sites where an organisation phone number was found.
H2O 2.x Complementary Technologies
Technologies frequently found with H2O 2.x.
Websites Using H2O 2.x
Live sites we caught running H2O 2.x in the wild, straight from the latest crawl.
| Domain | Server Location | ASN | Crawl Date |
|---|---|---|---|
| yetigame.jp | ๐ฏ๐ต Japan | SAKURA Internet Inc. | July 27, 2026 |
| andydavies.me | ๐ฒ๐ช Montenegro | DigitalOcean, LLC | July 26, 2026 |
| cartagena-hotels-colombia.com | ๐บ๐ธ United States | Hostwinds LLC. | July 26, 2026 |
| zotum.net | ๐ฉ๐ช Germany | Hetzner Online GmbH | July 24, 2026 |
| cartagena-hotels.org | ๐บ๐ธ United States | Hostwinds LLC. | July 24, 2026 |
| ahti.space | ๐จ๐ฆ Canada | OVH SAS | July 24, 2026 |
| zgrep.org | Unknown | Akamai Connected Cloud | July 23, 2026 |
| peco-japan.com | ๐ฏ๐ต Japan | Amazon.com, Inc. | July 23, 2026 |
| greenjobs.de | ๐ฉ๐ช Germany | Hetzner Online GmbH | July 23, 2026 |
| cogarr.net | ๐บ๐ธ United States | AT&T Enterprises, LLC | July 20, 2026 |
Top H2O 2.x Identifiers
Who is using H2O 2.x and where: top five by detected sites.
Most Frequent H2O 2.x Identifiers and Complementary Tech
Most frequently encountered identifiers for H2O 2.x and its complementary technologies.
| Technology | Sites |
|---|---|
C | 148 |
HTTP/2 | 148 |
| HSTS | 100 |
Bootstrap | 72 |
Cloudflare | 58 |
cdnjs | 58 |
Font Awesome | 54 |
jQuery | 51 |
Varnish | 50 |
PHP | 45 |
MySQL | 28 |
WordPress | 28 |
Google Analytics | 25 |
Google Tag Manager | 24 |
Google Hosted Libraries | 15 |
HTTP/3 | 15 |
|
jQuery Migrate | 12 |
BootstrapCDN | 10 |
Google AdSense | 10 |
|
jQuery CDN | 10 |
Node.js | 8 |
reCAPTCHA | 8 |
All in One SEO | 7 |
Contact Form 7 | 7 |
Express | 6 |
| Language | Sites |
|---|---|
| English | 70 |
| Japanese | 43 |
| German | 5 |
| Swahili | 4 |
| Hungarian | 3 |
| Latin | 3 |
| Basque | 2 |
| Chinese | 2 |
| Afrikaans | 1 |
| Arabic | 1 |
| Catalan | 1 |
| Czech | 1 |
| Welsh | 1 |
| Danish | 1 |
| Esperanto | 1 |
| Finnish | 1 |
| French | 1 |
| Lithuanian | 1 |
| Ganda | 1 |
| Mฤori | 1 |
| Slovenian | 1 |
| Swedish | 1 |
| Tagalog | 1 |
| Xhosa | 1 |
| ASN | Sites |
|---|---|
| Solarix Networks Limited | 49 |
| SAKURA Internet Inc. | 45 |
| Hetzner Online GmbH | 9 |
| Amazon.com, Inc. | 5 |
| Aruba S.p.A. | 4 |
| GMO Internet Group, Inc. | 4 |
| Google LLC | 4 |
| Verizon Business | 4 |
| DigitalOcean, LLC | 3 |
| NTT PC Communications, Inc. | 3 |
| OVH SAS | 3 |
| Hostwinds LLC. | 2 |
| National Telecom Public Company Limited | 2 |
| Telenor Sverige AB | 2 |
| AT&T Enterprises, LLC | 1 |
| Akamai Connected Cloud | 1 |
| Contabo GmbH | 1 |
| Hurricane Electric LLC | 1 |
| OPTAGE Inc. | 1 |
| Oracle Corporation | 1 |
| Wisconsin CyberLynk Network, Inc. | 1 |
| Xserver Inc. | 1 |
| netcup GmbH | 1 |
| TLD | Sites |
|---|---|
| nz | 46 |
| com | 27 |
| jp | 16 |
| net | 16 |
| org | 9 |
| de | 6 |
| hu | 4 |
| info | 3 |
| me | 3 |
| biz | 2 |
| se | 2 |
| accountants | 1 |
| al | 1 |
| asia | 1 |
| at | 1 |
| co | 1 |
| io | 1 |
| shop | 1 |
| si | 1 |
| space | 1 |
| systems | 1 |
| tech | 1 |
| th | 1 |
| tokyo | 1 |
| work | 1 |
| Country | Sites |
|---|---|
| ๐ฏ๐ต Japan | 58 |
| ๐ณ๐ฟ New Zealand | 49 |
| ๐ฉ๐ช Germany | 10 |
| ๐บ๐ธ United States | 8 |
| Unknown | 5 |
| ๐ญ๐บ Hungary | 4 |
| ๐จ๐ฆ Canada | 3 |
| ๐ฒ๐ช Montenegro | 3 |
| ๐ธ๐ช Sweden | 2 |
| ๐ฆ๐ฑ Albania | 1 |
| ๐ฆ๐น Austria | 1 |
| ๐จ๐ด Colombia | 1 |
| ๐ฌ๐ง United Kingdom | 1 |
| ๐ฎ๐ด British Indian Ocean Territory | 1 |
| ๐น๐ญ Thailand | 1 |