What powers 
pbc.guru?
Last seen Oct 2026 · 20 technologies across 15 categories
Analytics
CDN
Cookie compliance
Font scripts
Hosting
JavaScript libraries
Miscellaneous
Page builders
Programming languages
RUM
Tag managers
UI frameworks
Web frameworks
Web servers
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| best books for work book club | #1 | 12 |
| professional club | #22 | 11 |
| professional book club | #1 | 9 |
| professional book clubs | #1 | 9 |
| books for work book club | #2 | 8 |
| top books for young professionals | #2 | 8 |
| work book club books | #3 | 7 |
| young professional books | #2 | 5 |
| best books for work book clubs | #3 | 4 |
| guru careers | #9 | 2 |
| books on lifelong learning | #8 | 1 |
| bookclub company | #10 | 1 |
| national book clubs | #11 | 1 |
| online book clubs | #18 | 1 |
| gravesend new hampshire | #10 | 0 |
| unusual books for book club | #10 | 0 |
| books like chip war | #11 | 0 |
| book club platform | #12 | 0 |
| book club community | #15 | 0 |
| book club website | #15 | 0 |
| book guru | #18 | 0 |
| textbookguru | #18 | 0 |
| book a guru | #19 | 0 |
| best books for managers to read | #21 | 0 |
| best books for work | #21 | 0 |
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
- 77% desktop
- 23% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.28 / 10 · ranked #214,167 of all domains
144 referring domains · OpenPageRank
Search traffic
79 est. monthly organic visits (US)
98 keywords in Google's top 30
Core Web Vitals
| LCP | 1.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- Weight: 3.8 MB · 73 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered May 2015 (11 years) via Cloudflare, Inc, renews May 2027
- Hosted on DigitalOcean (167.99.156.93)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 2,086,747, 50 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.pbc.guru | 16 |
| wellesley.pbc.guru | 9 |
| berkeley.pbc.guru | 8 |
| cambridge.pbc.guru | 8 |
| cornell.reads.pbc.guru | 8 |
| imperial.pbc.guru | 8 |
| msu.pbc.guru | 8 |
| oxford.pbc.guru | 8 |
| rutgers.pbc.guru | 8 |
| sydney.au.pbc.guru | 8 |
| uillinois.pbc.guru | 8 |
| uw.pbc.guru | 8 |
| volusialibrary.pbc.guru | 8 |
| foriowa.pbc.guru | 7 |
| smith.pbc.guru | 7 |
| utoronto.pbc.guru | 7 |