What powers theconcreteunderground.com?
Last seen Oct 2026 · 20 technologies across 13 categories
CDN
Customer data platform
Ecommerce
Font scripts
Hosting
Issue trackers
JavaScript libraries
Miscellaneous
Programming languages
Security
UI frameworks
Video players
Web frameworks
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026. A recent check saw a policy file missing; awaiting confirmation.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.45 / 10 · ranked #29,401,881 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 0.7 MB · 45 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Amazon Web Services (3.33.251.168)
- DNS: GoDaddy DNS
- Email: no MX record returned
- SSL: GoDaddy, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 77,997,802
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Sentry Mar 2026