What powers blackcircles.com?
Last seen Jun 2026 · 35 technologies across 22 categories
Advertising
Microsoft Advertising
since Jul 2025
Analytics
CDN
Cloudflare
since Sep 2020
CMS
Databases
MySQL
since Jul 2020
Documentation
Zendesk
since Sep 2021
Ecommerce
Cart Functionality
since Aug 2020
Font scripts
Google Font API
since Apr 2018
Twitter Emoji (Twemoji)
since Jul 2020
Issue trackers
Cloudflare Network Error Logging
since Feb 2022
JavaScript frameworks
React
since Jul 2021
JavaScript libraries
Preact
since Apr 2026
Miscellaneous
Webpack
since Sep 2021
Operating systems
Windows Server
since Sep 2021
Programming languages
PHP
since Jul 2020
Reverse proxies
Reviews
Trustpilot
since Feb 2025
RUM
Cloudflare Browser Insights
since Mar 2021
New Relic
since Jun 2018
Security
Cloudflare Bot Management
since Nov 2021
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Apr 2018
UI frameworks
Web frameworks
Microsoft ASP.NET
since Sep 2021
Web servers
Audience
- 75% phone
- 22% desktop
- 3% tablet
United Kingdom
Isle of Man
Netherlands
Switzerland
South Africa
Romania
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.38 / 10 · ranked #420,214 of all domains
99 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 150 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 2.7 MB · 107 requests
- Structured data: JSON-LD, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.blackcircles.com | 18 |
| news.blackcircles.com | 15 |
| customerservice.blackcircles.com | 8 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Preact Apr 2026
- detected Hotjar Mar 2026
- detected TikTok Pixel Mar 2026
- dropped Hotjar Feb 2026
- detected SpeedCurve Feb 2026
- dropped TikTok Pixel Feb 2026
- dropped Taboola Dec 2025
- dropped AWIN Nov 2025
- dropped SaleCycle Nov 2025
- dropped Termly Nov 2025
- detected Hotjar Oct 2025
- detected Taboola Oct 2025
- detected TikTok Pixel Oct 2025