What powers 
ostermiller.org?
Last seen Oct 2026 · 34 technologies across 21 categories
A/B Testing
Analytics
Caching
CDN
CMS
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Page builders
Performance
Programming languages
Security
SEO
Tag managers
Video players
Web servers
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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| triangle solver | #7 | 1,500 |
| significant number calculator | #4 | 1,500 |
| fahrenheit to celsius | #52 | 870 |
| sig digits calculator | #8 | 650 |
| fahrenheit to celsius to fahrenheit | #38 | 630 |
| centigrade to kelvin | #12 | 370 |
| scientific figures calculator | #9 | 330 |
| celsius to kelvin conversion | #6 | 310 |
| celsius en kelvin | #17 | 210 |
| significant figures solver | #11 | 200 |
| temp conversion | #35 | 170 |
| fahrenheit to celsius converter | #21 | 140 |
| degree celsius to fahrenheit converter | #56 | 100 |
| f to c to k | #3 | 86 |
| temperature conversion | #36 | 85 |
| base64 | #39 | 85 |
| how many significant figures calculator | #8 | 71 |
| calculating significant figures calculator | #14 | 68 |
| 83 degrees celsius to fahrenheit | #17 | 64 |
| tic tac toe solver | #2 | 63 |
| significant figure calculator | #9 | 61 |
| side side side triangle calculator | #11 | 60 |
| convert f to celsius degrees | #38 | 57 |
| 250 degrees f to celsius | #60 | 57 |
| sugar maple | #85 | 57 |
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
- 57% phone
- 43% desktop
United States
United Kingdom
India
Canada
Australia
South Korea
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.93 / 10 · ranked #114,469 of all domains
135 referring domains · OpenPageRank
Search traffic
9,300 est. monthly organic visits (US)
1,983 keywords in Google's top 30
Core Web Vitals
| LCP | 0.7 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 0.1 MB · 30 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Apr 2001 (25 years) via GoDaddy.com, LLC, renews Apr 2029
- Hosted on Amazon Web Services (54.177.47.41, IPv6)
- DNS: Amazon Route 53
- Email: DreamHost
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 455,770, 7 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| socvr.ostermiller.org | 28 |
| blog.ostermiller.org | 16 |
| ostermiller.org | 2 |
| th.coinmill.deadsea.ostermiller.org | 1 |
| www.ostermiller.org | 1 |
Full technology history →
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Recent changes
- detected Twitter Emoji (Twemoji) Dec 2025