What powers robertjfischer.com?
Last seen Aug 2026 · 30 technologies across 16 categories
Advertising
Analytics
CDN
Font scripts
JavaScript frameworks
JavaScript libraries
Maps
Miscellaneous
Programming languages
Security
Tag managers
UI frameworks
Web frameworks
Web servers
Webmail
AI Crawlers
Does not block any of the 33 AI crawlers we track in its robots.txt. Checked Sep 2026.
Training crawlers
- ClaudeBot Allowed
- Google-CloudVertexBot Allowed
- Google-Extended Allowed
- GPTBot Allowed
- meta-externalagent Allowed
Search and AI assistants
- Claude-SearchBot Allowed
- OAI-SearchBot Allowed
- PerplexityBot Allowed
User-request fetchers
- ChatGPT-User Allowed
- Claude-User Allowed
- meta-externalfetcher Allowed
- Perplexity-User Allowed
The other 21 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt found
- ai.txt not found
- Sep 2026 llms.txt appeared
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 56% phone
- 44% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.26 / 10 · ranked #2,962,662 of all domains
26 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 5.9 MB · 101 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Robert J Fischer Team
- Founded: 2005
- Industry: Real estate (declares
RealEstateAgent) - Country: United States
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Hosted on Amazon Web Services (3.231.96.236)
- DNS: Cloudflare DNS
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 10,409,325, 2 hosts
- Verified with: Google, Meta Business, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.robertjfischer.com | 25 |
| robertjfischer.com | 14 |
Full technology history →
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