What powers 
nanograv.org?
Last seen Sep 2026 · 33 technologies across 20 categories
Advertising
Analytics
Caching
CDN
CMS
Databases
Font scripts
Hosting
JavaScript graphics
JavaScript libraries
Marketing automation
Miscellaneous
PaaS
Programming languages
Security
Video players
Web server extensions
Web servers
Widgets
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
- Aug 2026 amazonbot removed from robots.txt
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| pulsar star | #2 | 1,100 |
| pulsars | #3 | 180 |
| pulse star | #2 | 120 |
| likelihood | #27 | 47 |
| gravitational waves | #13 | 39 |
| low frequency waves | #4 | 33 |
| covariance | #40 | 25 |
| what is the wave frequency | #42 | 14 |
| shapiro delay | #3 | 14 |
| what is a pulsar star | #6 | 13 |
| globular star cluster | #71 | 11 |
| globular cluster | #53 | 11 |
| radio silence zone | #15 | 10 |
| what is a pulsar | #85 | 9 |
| multi messenger astronomy | #6 | 7 |
| what is covariance | #81 | 6 |
| radio astronomy | #14 | 6 |
| frequency waves | #7 | 6 |
| covariance meaning | #80 | 5 |
| multi-messenger astronomy | #7 | 5 |
| mle calculator | #5 | 5 |
| telescope in west virginia | #9 | 4 |
| quiet zone | #45 | 4 |
| neutron star and pulsar | #11 | 4 |
| pulsar waves | #3 | 4 |
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
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.32 / 10 · ranked #188,086 of all domains
208 referring domains · OpenPageRank
Search traffic
1,700 est. monthly organic visits (US)
214 keywords in Google's top 30
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Fastly
- Weight: 2.7 MB · 37 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- North American Nanohertz Observatory for Gravitational Waves
From Wikidata (CC0).
Infrastructure
- Registered Oct 2007 (19 years) via GoDaddy.com, LLC, renews Oct 2028
- Hosted on Fastly (23.185.0.4, IPv6)
- DNS: GoDaddy DNS
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 61,840, 9 hosts
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 |
|---|---|
| nanograv.org | 20 |
| pulsars.nanograv.org | 15 |
| ipta.nanograv.org | 6 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Polyfill Jul 2026