What powers longan.edu.vn?
Last seen Aug 2026 · 38 technologies across 15 categories
CDN
Font scripts
JavaScript frameworks
Zone.js
since Jul 2023
JavaScript graphics
ApexCharts.js
since Dec 2023
Chart.js
since Jul 2023
JavaScript libraries
LazySizes
since Sep 2022
OWL Carousel
since Apr 2020
Select2
since Sep 2022
Selectize
since Nov 2022
SweetAlert2
since Jul 2022
Swiper
since Sep 2022
Miscellaneous
Open Graph
since Sep 2022
Operating systems
Ubuntu
since Jul 2023
Windows Server
since Apr 2020
Page builders
Programming languages
TypeScript
since Jul 2023
Security
HSTS
since Jan 2026
UI frameworks
Element UI
since May 2025
Tailwind CSS
since Apr 2022
Video players
JW Player
since Nov 2021
Web frameworks
Web servers
Webmail
Google Workspace
since Aug 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 100% phone
Vietnam
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.47 / 10 · ranked #923,706 of all domains
31 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| CLS | 0.05 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Vietnamese
- Weight: 12.7 MB · 34 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on VIETEL-AS-AP Viettel Group (115.79.122.58)
- DNS: tenten.vn
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: GlobalSign, RSA 2048, wildcard, expires Feb 2027
- Common Crawl link graph: rank 11,937,709, 26 hosts
- Verified with: GlobalSign, Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| tuyensinh.longan.edu.vn | 17 |
| congphuhuynh.longan.edu.vn | 15 |
| qlgd.longan.edu.vn | 15 |
| hosodientu.longan.edu.vn | 12 |
| diemthict2006.longan.edu.vn | 11 |
| diemthict2018.longan.edu.vn | 11 |
| c23longcang.longan.edu.vn | 10 |
| c23myquy.longan.edu.vn | 10 |
| khohoclieu.longan.edu.vn | 10 |
| thptdongthanh.longan.edu.vn | 10 |
| thptphanvandat.longan.edu.vn | 10 |
| thpttanthanh.longan.edu.vn | 10 |
| thptthuthua.longan.edu.vn | 10 |
| thptanninh.longan.edu.vn | 9 |
| thptvovantan.longan.edu.vn | 9 |
| tracuudiem.longan.edu.vn | 9 |
| thcsthptluonghoa.longan.edu.vn | 8 |
| thptcanduoc.longan.edu.vn | 8 |
| thptchuvanan.longan.edu.vn | 8 |
| thptduchoa.longan.edu.vn | 8 |
| thptnguyenhuutho.longan.edu.vn | 8 |
| thptnguyenthong.longan.edu.vn | 8 |
| thptrachkien.longan.edu.vn | 8 |
| thptvinhhung.longan.edu.vn | 8 |
Full technology history →
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Recent changes
- detected HSTS Jan 2026