What powers 
alef.com?
Last seen Oct 2026 · 44 technologies across 21 categories
Analytics
CDN
CMS
Cookie compliance
Databases
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Miscellaneous
Mobile frameworks
Operating systems
Programming languages
Security
Tag managers
UI frameworks
Web server extensions
Web servers
Webmail
Widgets
WordPress plugins
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 48% desktop
- 45% phone
- 7% tablet
Romania
Indonesia
United Arab Emirates
Poland
Czechia
Hungary
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.13 / 10 · ranked #487,719 of all domains
99 referring domains · OpenPageRank
Search traffic
97 est. monthly organic visits (US)
237 keywords in Google's top 30
Core Web Vitals
| LCP | 3.8 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English
- Weight: 1.3 MB · 83 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Mar 1995 (31 years) via Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA, renews Mar 2027
- Hosted on ALEFNULA Alef Nula a.s. (193.239.2.9)
- DNS: websupport.cz
- Email: alef.com
- Email security: SPF (hard fail), DMARC quarantine, DNSSEC signed
- SSL: DigiCert, RSA 4096, wildcard, expires Apr 2027
- Common Crawl link graph: rank 1,184,601, 24 hosts
- Verified with: Apple Business, Google, LinkedIn, OpenAI
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| microsoft.alef.com | 21 |
| sdesk.alef.com | 13 |
| www.alef.com | 12 |
| ciscoday.alef.com | 10 |
| pmp.alef.com | 8 |
| b2b.alef.com | 7 |
| training.alef.com | 1 |
Full technology history →
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Recent changes
- dropped CKEditor Oct 2026