What powers tfobrien.com?
Last seen Oct 2026 · 29 technologies across 17 categories
CDN
CMS
Databases
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Maps
Miscellaneous
PaaS
Performance
Programming languages
Reviews
Tag managers
UI frameworks
Video players
WordPress plugins
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
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 55% desktop
- 45% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.05 / 10 · ranked #11,798,864 of all domains
8 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.6 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 2700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Cloudflare, Fastly
- Weight: 2.5 MB · 134 requests
- WordPress theme: tryard · all themes
- Structured data: JSON-LD, Microdata
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- T.F. O'Brien Heating & Cooling
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Cloudflare (104.21.64.58, IPv6)
- DNS: Cloudflare DNS
- Email: Barracuda
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Jan 2027
- Common Crawl link graph: rank 12,390,737, 2 hosts
- Verified with: Emma
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
- dropped Cloudflare Browser Insights Oct 2026
- dropped AppNexus Sep 2026
- dropped CallRail Sep 2026
- dropped Cloudflare Bot Management Sep 2026
- dropped core-js Sep 2026
- dropped Facebook Pixel Sep 2026
- dropped Google Analytics Sep 2026
- dropped Microsoft Advertising Sep 2026
- dropped Cloudflare Turnstile Aug 2026
- detected Cloudflare Bot Management Jun 2026
- dropped reCAPTCHA Jun 2026
- detected Cloudflare Turnstile May 2026
- dropped Podium Mar 2026
- dropped Preact Mar 2026
- detected Twitter Emoji (Twemoji) Mar 2026
- detected Trustindex Jan 2026