What powers jpcert.or.jp?
Last seen Aug 2026 · 19 technologies across 12 categories
Analytics
CDN
Font scripts
JavaScript Frameworks
JavaScript libraries
Miscellaneous
PaaS
Programming languages
Security
UI frameworks
Web frameworks
Web Servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
- Sep 2026 * removed from robots.txt
- Sep 2026 robots.txt removed
- Aug 2026 robots.txt appeared
- Aug 2026 * added to robots.txt
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| traffic light protocol | #84 | 7 |
| cve-2019-18187 | #4 | 6 |
| tsubame | #57 | 5 |
| nist 800-63b | #68 | 2 |
| japanese cyber | #9 | 2 |
| download acrobat pro helpx | #11 | 2 |
| cve 2020 24557 | #7 | 2 |
| cve-2020-24557 | #7 | 2 |
| c offsetof | #51 | 1 |
| cobalt iii | #65 | 1 |
| control reaches end of non-void function | #23 | 1 |
| control reaches end of non void function | #21 | 1 |
| telerik ui | #37 | 1 |
| atlassian conference 2025 | #67 | 1 |
| responce or response | #84 | 1 |
| offsetof c | #60 | 1 |
| jpcert/cc | #8 | 1 |
| jpcert | #10 | 1 |
| jpcert | #8 | 1 |
| f5 apm | #60 | 1 |
| fluent bit | #85 | 1 |
| cve group | #59 | 1 |
| cve 2021 26855 | #62 | 1 |
| cve 2020 9484 | #10 | 1 |
| cve-2023-20273 | #48 | 1 |
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 robots.txt, all AI crawlers allowed
Audience
- 57% desktop
- 43% phone
Japan
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
7.91 / 10 · ranked #9,018 of all domains
1,294 referring domains · OpenPageRank
Search traffic
50 est. monthly organic visits (US)
308 keywords in Google's top 30
Core Web Vitals
| LCP | 0.7 s |
| INP | 200 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese (Japan)
- CDN: Amazon CloudFront
- Weight: 3.0 MB · 39 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- Japan Computer Emergency Response Team Coordination Center
- Country: Japan
From Wikidata (CC0).
Infrastructure
- DNS: d-53.info
- Email: jpcert.or.jp
- Email security: SPF (hard fail), DMARC quarantine, DNSSEC signed
- SSL: Cybertrust Japan, RSA 2048, expires Feb 2027
- Common Crawl link graph: rank 14,181, 11 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| blogs.jpcert.or.jp | 7 |
| fisac-signal-v3.jpcert.or.jp | 7 |
| jsac.jpcert.or.jp | 6 |
| vrda.jpcert.or.jp | 6 |
| www.jpcert.or.jp | 6 |
| form.jpcert.or.jp | 1 |
Full technology history →
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Recent changes
- dropped UIKit Oct 2025