What powers 
thesentinel.com?
Last seen Sep 2026 · 45 technologies across 23 categories
Advertising
Analytics
Blogs
CDN
CMS
Customer data platform
Databases
Ecommerce
Font scripts
JavaScript frameworks
JavaScript libraries
Live chat
Miscellaneous
Mobile frameworks
PaaS
Programming languages
Reverse proxies
Security
SEO
Tag managers
UI frameworks
Webmail
Widgets
AI Crawlers
Blocks 19 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- AI2Bot Blocked
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- FacebookBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- ImagesiftBot Blocked
- img2dataset Blocked
- meta-externalagent Blocked
- Webzio-Extended Blocked
Search and AI assistants
- OAI-SearchBot Blocked
- PerplexityBot Blocked
- PetalBot Blocked
- YouBot Blocked
User-request fetchers
- ChatGPT-User Blocked
The other 14 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
19 of 33 AI crawlers blocked
Audience
- 52% desktop
- 48% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.71 / 10 · ranked #307,000 of all domains
241 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 2.4 MB · 145 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on LEE-ASN (192.104.183.109)
- DNS: Network Solutions
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record
- SSL: Google Trust Services, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 533,977, 4 hosts
- Verified with: Microsoft 365
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| pgs.thesentinel.com | 26 |
| mont.thesentinel.com | 25 |
| www.thesentinel.com | 24 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025