What powers 
nist.gov?
Last seen Sep 2026 · 100 technologies across 29 categories
Analytics
Caching
CDN
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Miscellaneous
Network storage
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RUM
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AI Crawlers
Blocks all crawlers by default in robots.txt (User-agent: *). Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 robots.txt appeared
- Oct 2026 * added to robots.txt
- Sep 2026 * removed from robots.txt
- Sep 2026 robots.txt removed
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| summer undergraduate research fellowship | #1 | 27,500 |
| en to sp | #75 | 23,300 |
| nist | #1 | 15,000 |
| national bureau of standards | #1 | 12,300 |
| quantum computing | #4 | 10,900 |
| contam | #1 | 10,100 |
| si prefixes | #1 | 10,100 |
| cadaver | #2 | 9,800 |
| world trade towers | #8 | 8,900 |
| metric units prefixes | #1 | 7,500 |
| atomic clock | #3 | 5,900 |
| ada augusta lovelace | #3 | 5,900 |
| wtc building 7 | #2 | 5,400 |
| building 7 | #2 | 5,400 |
| carbon monoxide sensor | #8 | 4,800 |
| mep | #1 | 4,500 |
| programmer lovelace | #3 | 4,400 |
| the station nightclub | #2 | 4,400 |
| station club fire | #2 | 4,400 |
| kelvin | #2 | 4,400 |
| atomic time | #4 | 4,000 |
| second | #4 | 4,000 |
| ada lovelace | #4 | 4,000 |
| fire | #13 | 4,000 |
| time is | #3 | 3,900 |
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
All crawlers blocked
Audience
- 86% desktop
- 14% phone
United States
India
Japan
United Kingdom
Australia
Italy
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
9.12 / 10 · ranked #193 of all domains
36,416 referring domains · OpenPageRank
Search traffic
677,600 est. monthly organic visits (US)
130,365 keywords in Google's top 30
Core Web Vitals
| LCP | 3 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- CDN: Cloudflare
- Weight: 0.2 MB · 5 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Similar sites
eeoc.gov 3 shared
fdic.gov 5 shared
doi.gov 5 shared
iaapa.org 5 sharedttb.gov 4 shared
sec.gov 4 shared
- eda.gov 3 shared
dol.gov 5 shared
Closest technology stacks among the highest-authority sites we track; "shared" counts the distinctive technologies in common.
Organisation
- National Institute of Standards and Technology
- Founded: 1901
- Country: United States
From Wikidata (CC0).
Infrastructure
- Registered Oct 1997 (29 years) via get.gov, renews Aug 2027
- Hosted on Cloudflare (172.65.90.24, IPv6)
- DNS: Cloudflare DNS
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC reject, DNSSEC signed, MTA-STS, BIMI
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 330, 589 hosts
- Verified with: Atlassian, Box, Cisco, Google, Jamf, Microsoft 365, OpenAI
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 |
|---|---|
| ncnr.nist.gov | 21 |
| www.physics.nist.gov | 21 |
| rpki-monitor.antd.nist.gov | 19 |
| www.nist.gov | 19 |
| materialsdata.nist.gov | 18 |
| samate.nist.gov | 18 |
| shop.nist.gov | 18 |
| sibr.nist.gov | 18 |
| www-test.ct.nist.gov | 18 |
| www.nccoe.nist.gov | 18 |
| ciks.cbt.nist.gov | 17 |
| itl.nist.gov | 16 |
| jarvis.nist.gov | 16 |
| physics.nist.gov | 16 |
| pml.nist.gov | 16 |
| tf.nist.gov | 16 |
| www-s.nist.gov | 16 |
| www.cstl.nist.gov | 16 |
| www.ctcms.nist.gov | 16 |
| www.itl.nist.gov | 16 |
| www.ncnr.nist.gov | 16 |
| ai-challenges.nist.gov | 15 |
| ncp.nist.gov | 15 |
| nvd.nist.gov | 15 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Google Remarketing Tag Sep 2026
- detected lit-element Jul 2026
- detected lit-html Jul 2026