What powers refsix.com?
Last seen Aug 2026 · 61 technologies across 28 categories
A/B Testing
Advertising
Analytics
Appointment scheduling
CDN
CMS
Documentation
Ecommerce
Font scripts
Issue trackers
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Maps
Marketing automation
Miscellaneous
PaaS
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Performance
Programming languages
Security
Tag managers
Translation
UI frameworks
Video players
Web frameworks
Webmail
AI Crawlers
Restricts 16 of 33 AI crawlers we track by name in its robots.txt. Checked Aug 2026.
Training crawlers
- AI2Bot Restricted
- Applebot-Extended Restricted
- Bytespider Restricted
- CCBot Restricted
- ClaudeBot Restricted
- cohere-training-data-crawler Restricted
- FacebookBot Restricted
- Google-Extended Restricted
- GoogleOther Restricted
- GPTBot Restricted
- img2dataset Restricted
- meta-externalagent Restricted
- Webzio-Extended Restricted
Search and AI assistants
- Amazonbot Restricted
- DuckAssistBot Restricted
- YouBot Restricted
The other 17 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
16 of 33 AI crawlers restricted
Audience
- 61% phone
- 39% desktop
Germany
United Kingdom
France
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.93 / 10 · ranked #1,706,868 of all domains
22 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.9 s |
| INP | 100 ms |
| CLS | 0.5 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United Kingdom)
- Weight: 7.5 MB · 159 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- REFSIX Ltd
From the homepage's own structured data (Sep 2026).
Infrastructure
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 7,004,970, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| refsix.com | 37 |
| 2022.refsix.com | 19 |
| feedback.refsix.com | 16 |
| account.refsix.com | 13 |
| app.refsix.com | 13 |
| my.refsix.com | 10 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Akamai May 2026
- dropped Akamai Bot Manager May 2026
- detected Angular Apr 2026
- detected Zone.js Apr 2026
- detected Amazon SES Mar 2026