45 live ef.js sites, ready to export.
That's how many ef.js 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 ef.js 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 ef.js websites on .com domains.
Only sites where an organisation phone number was found.
ef.js Complementary Technologies
Technologies frequently found with ef.js.
Websites Using ef.js
Live sites we caught running ef.js in the wild, straight from the latest crawl.
| Domain | Server Location | ASN | Crawl Date |
|---|---|---|---|
| zeppelinpm.ru | 🇷🇺 Russia | Domain names registrar REG.RU, Ltd | July 26, 2026 |
| labiblia.in | Unknown | Cloudflare, Inc. | July 24, 2026 |
| kobe-shinse.com | 🇯🇵 Japan | GMO Internet Group, Inc. | June 17, 2026 |
| kaken-tech.co.jp | 🇯🇵 Japan | Xserver Inc. | June 17, 2026 |
| dejavuthailand.com | 🇸🇬 Singapore | Amazon.com, Inc. | June 17, 2026 |
| colkin.online | 🇦🇷 Argentina | Dattatec.com | June 17, 2026 |
| pakval.com.ua | 🇺🇦 Ukraine | Hetzner Online GmbH | June 17, 2026 |
| puliafito.com | 🇦🇷 Argentina | Dattatec.com | June 16, 2026 |
| civi-land-int.com | 🇺🇸 United States | Amazon.com, Inc. | June 16, 2026 |
| jusentrerios.gov.ar | 🇦🇷 Argentina | Telecom Argentina S.A. | June 15, 2026 |
Top ef.js Identifiers
Who is using ef.js and where: top five by detected sites.
Most Frequent ef.js Identifiers and Complementary Tech
Most frequently encountered identifiers for ef.js and its complementary technologies.
| Technology | Sites |
|---|---|
jQuery | 35 |
PHP | 24 |
Apache HTTP Server | 21 |
Bootstrap | 19 |
|
jQuery Migrate | 16 |
Nginx | 15 |
jQuery UI | 15 |
Debian | 12 |
Google Analytics | 12 |
MySQL | 9 |
WordPress | 9 |
| HSTS | 7 |
Cloudflare | 6 |
Google Tag Manager | 6 |
cdnjs | 6 |
Google Hosted Libraries | 5 |
OWL Carousel | 5 |
jsDelivr | 5 |
reCAPTCHA | 5 |
Contact Form 7 | 4 |
Ubuntu | 4 |
|
jQuery CDN | 4 |
AddToAny | 3 |
Joomla | 3 |
Magnific Popup | 3 |
| Language | Sites |
|---|---|
| Spanish | 14 |
| English | 6 |
| Japanese | 6 |
| Chinese | 4 |
| French | 3 |
| Russian | 2 |
| Bosnian | 1 |
| Dutch | 1 |
| Polish | 1 |
| Portuguese | 1 |
| Romanian | 1 |
| Southern Sotho | 1 |
| Swahili | 1 |
| Thai | 1 |
| Turkish | 1 |
| ASN | Sites |
|---|---|
| Amazon.com, Inc. | 6 |
| OVH SAS | 5 |
| Dattatec.com | 3 |
| Red de Interconexion Universitaria | 3 |
| Cloudflare, Inc. | 2 |
| DigitalOcean, LLC | 2 |
| GMO Internet Group, Inc. | 2 |
| Telecom Argentina S.A. | 2 |
| Telefonica de Argentina | 2 |
| Xserver Inc. | 2 |
| Aruba S.p.A. | 1 |
| China Unicom Beijing Province Network | 1 |
| Domain names registrar REG.RU, Ltd | 1 |
| Google LLC | 1 |
| Hangzhou Alibaba Advertising Co.,Ltd. | 1 |
| Hetzner Online GmbH | 1 |
| Ict Bulut Bilisim A.s. | 1 |
| One.com A/S | 1 |
| SAKURA Internet Inc. | 1 |
| Sony Network Taiwan Limited | 1 |
| Sub 6 Limited | 1 |
| UNE EPM TELECOMUNICACIONES S.A. | 1 |
| UNIT A17,9F SILVERCORP INTL TOWER 707-713 NATHAN RD | 1 |
| Universidad Nacional de Quilmes | 1 |
| WHG Hosting Services Ltd | 1 |
| Your Hosting B.V. | 1 |
| TLD | Sites |
|---|---|
| com | 12 |
| ar | 10 |
| jp | 3 |
| 78 | 2 |
| be | 2 |
| 210 | 1 |
| 28 | 1 |
| 56 | 1 |
| cn | 1 |
| in | 1 |
| net | 1 |
| nl | 1 |
| nu | 1 |
| online | 1 |
| org | 1 |
| ro | 1 |
| ru | 1 |
| tr | 1 |
| tw | 1 |
| ua | 1 |
| uk | 1 |
| Country | Sites |
|---|---|
| 🇦🇷 Argentina | 14 |
| 🇯🇵 Japan | 6 |
| 🇺🇸 United States | 4 |
| 🇨🇳 China | 3 |
| Unknown | 3 |
| 🇧🇪 Belgium | 2 |
| 🇬🇧 United Kingdom | 2 |
| 🇸🇬 Singapore | 2 |
| 🇨🇴 Colombia | 1 |
| 🇩🇰 Denmark | 1 |
| 🇫🇷 France | 1 |
| 🇮🇹 Italy | 1 |
| 🇳🇱 Netherlands | 1 |
| 🇷🇺 Russia | 1 |
| 🇹🇷 Turkey | 1 |
| 🇹🇼 Taiwan | 1 |
| 🇺🇦 Ukraine | 1 |