What powers 
spectruminfocus.com?
Last seen Oct 2026 · 19 technologies across 14 categories
A/B Testing
Advertising
Analytics
Caching
CMS
Customer data platform
JavaScript libraries
Miscellaneous
PaaS
Programming languages
Security
Segmentation
Tag managers
UI frameworks
AI Crawlers
Blocks 14 of 33 AI crawlers we track by name in its robots.txt. Checked Nov 2026.
Training crawlers
- AI2Bot Blocked
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
- PerplexityBot Blocked
- PetalBot Blocked
User-request fetchers
- MistralAI-User Blocked
The other 19 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
14 of 33 AI crawlers blocked
Audience
- 73% desktop
- 27% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.87 / 10 · ranked #675,087 of all domains
88 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.1 s |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English
- Weight: 3.4 MB · 99 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Amazon Web Services (23.20.11.45)
- DNS: Amazon Route 53
- Email: no MX record returned
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Feb 2027
- Common Crawl link graph: rank 1,072,541
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped comScore Jun 2026