What powers 
calhum.org?
Last seen Sep 2026 · 27 technologies across 18 categories
Analytics
CDN
CMS
CRM
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Load balancers
Miscellaneous
PaaS
Programming languages
Security
Tag managers
Webmail
WordPress plugins
WordPress themes
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 not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| cal | #54 | 950 |
| cal times | #61 | 770 |
| john cho | #18 | 200 |
| george takei | #35 | 190 |
| cal humanities | #1 | 150 |
| california humanities | #1 | 150 |
| common sense thomas paine | #12 | 130 |
| jerry brown california | #15 | 92 |
| polk gulch | #14 | 76 |
| cal humanities grant | #1 | 68 |
| allende author | #18 | 67 |
| california humanities grant | #1 | 63 |
| american sons film | #11 | 60 |
| humanities | #33 | 57 |
| common sense book | #9 | 54 |
| common sense pdf | #2 | 52 |
| who was the first african american president | #8 | 48 |
| julie fry | #2 | 43 |
| california based | #29 | 38 |
| california humanities grants | #2 | 32 |
| governor brown | #21 | 32 |
| john cho movies | #42 | 31 |
| it can't happen here | #75 | 31 |
| cal humanities grants | #2 | 30 |
| jeanne wakatsuki | #9 | 29 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 91% desktop
- 9% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.79 / 10 · ranked #129,495 of all domains
321 referring domains · OpenPageRank
Search traffic
4,000 est. monthly organic visits (US)
955 keywords in Google's top 30
Core Web Vitals
| LCP | 1.8 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 1400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 6.0 MB · 160 requests
- WordPress theme: hello-elementor (child: hello-theme-child) · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Cal Humanities
- Founded: 1975
- Country: United States
From Wikidata (CC0).
Infrastructure
- Registered Oct 1995 (31 years) via Network Solutions, LLC, renews Oct 2027
- Hosted on Cloudflare (141.193.213.10)
- DNS: Network Solutions
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 104,079, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted
Full technology history →
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Recent changes
- detected Salesforce Jul 2026
- detected Swiper May 2026
- dropped Bootstrap Mar 2026
- dropped Swiper Mar 2026
- dropped Underscore.js Mar 2026
- detected GSAP Feb 2026
- detected Twitter Emoji (Twemoji) Feb 2026
- dropped GSAP Nov 2025