What powers 
dubberly.com?
Last seen Aug 2026 · 9 technologies across 9 categories
Analytics
CMS
Databases
Font scripts
Miscellaneous
Operating systems
Programming languages
Web servers
Webmail
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| concept map | #30 | 85 |
| dubberly | #2 | 82 |
| hugh dubberly | #1 | 46 |
| interaction | #26 | 31 |
| systems and design | #32 | 21 |
| 3x4 grid | #3 | 20 |
| what is a conversation | #8 | 16 |
| 3 x 4 grid | #1 | 15 |
| 7 circle venn diagram | #2 | 15 |
| 4x3 grid | #3 | 14 |
| 4 by 3 grid | #1 | 13 |
| cybernetic design | #5 | 13 |
| interaction examples | #4 | 12 |
| interaction def | #68 | 11 |
| what is a concept map | #77 | 8 |
| what is an interaction | #6 | 7 |
| venn diagram 7 circles | #4 | 6 |
| goal-directed design | #2 | 5 |
| design as problem solving | #3 | 5 |
| what is interaction | #5 | 5 |
| apple knowledge navigator | #6 | 5 |
| knowledge navigator apple | #6 | 5 |
| creative concept maps | #5 | 4 |
| what is conversation | #5 | 4 |
| 10 way venn diagram | #4 | 3 |
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
- 100% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.30 / 10 · ranked #198,112 of all domains
154 referring domains · OpenPageRank
Search traffic
500 est. monthly organic visits (US)
213 keywords in Google's top 30
Core Web Vitals
| LCP | 1.3 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Registered Jun 2000 (26 years) via Tucows Domains Inc., renews Jun 2027
- Hosted on DigitalOcean (137.184.88.34)
- DNS: DigitalOcean
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 4096, expires Jan 2027
- Common Crawl link graph: rank 465,036, 8 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted