What powers 
openhousesf.org?
Last seen Sep 2026 · 26 technologies across 17 categories
Accessibility
Analytics
CDN
CMS
Ecommerce
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Load balancers
Miscellaneous
PaaS
Performance
Security
Video players
Webmail
AI Crawlers
Blocks 16 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
- FacebookBot Blocked
- Google-Extended Blocked
- GoogleOther Blocked
- GPTBot Blocked
- img2dataset Blocked
- meta-externalagent Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
- DuckAssistBot Blocked
- YouBot Blocked
The other 17 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
16 of 33 AI crawlers blocked
Audience
- 69% desktop
- 31% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.90 / 10 · ranked #651,214 of all domains
75 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.3 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- Weight: 25.2 MB · 311 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Squarespace (198.49.23.144)
- DNS: Network Solutions
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 7,001,665, 2 hosts
- Verified with: Apple Business
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 Angular Sep 2026
- dropped Google Font API Sep 2026
- dropped TypeScript Sep 2026
- dropped Zone.js Sep 2026
- detected Sentry May 2026
- detected Angular Apr 2026
- detected TypeScript Apr 2026
- detected Zone.js Apr 2026