What powers 
jfbrennan.com?
Last seen Sep 2026 · 23 technologies across 12 categories
Advertising
Analytics
CDN
CMS
Cookie compliance
Font scripts
Hosting
JavaScript libraries
Marketing automation
Miscellaneous
Security
Webmail
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Oct 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
- Oct 2026 llms.txt appeared
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 56% desktop
- 44% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.41 / 10 · ranked #992,267 of all domains
63 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Hosted on Cloudflare (160.153.0.203)
- DNS: GoDaddy DNS
- Email: Mimecast
- Email security: SPF (soft fail), DMARC reject
- SSL: Google Trust Services, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 2,750,404, 2 hosts
- Verified with: Apple Business, Autodesk, Microsoft 365
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 Preact Aug 2026