What powers 
doorkeeper.jp?
Last seen Sep 2026 · 34 technologies across 17 categories
Analytics
Issue trackers
JavaScript frameworks
JavaScript graphics
JavaScript Libraries
Live chat
Miscellaneous
PaaS
Programming languages
Reverse proxies
Security
Tag managers
UI frameworks
Web frameworks
Web servers
Webmail
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
- Sep 2026 robots.txt appeared
- Sep 2026 * added to robots.txt
- Sep 2026 * removed from robots.txt
- Sep 2026 robots.txt removed
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| doorkeeper | #87 | 1 |
| doorkeeper | #49 | 1 |
| rails doorkeeper | #44 | 0 |
| keeper api | #22 | 0 |
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
- 75% desktop
- 25% phone
Japan
Vietnam
Bangladesh
Indonesia
Philippines
Malaysia
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
8.22 / 10 · ranked #5,080 of all domains
2,823 referring domains · OpenPageRank
Search traffic
2 est. monthly organic visits (US)
4 keywords in Google's top 30
Core Web Vitals
| LCP | 1.4 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Japanese
- Weight: 1.4 MB · 39 requests
- Structured data: Microdata
Homepage as crawled by the HTTP Archive, Sep 2026.
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dendreo.com 4 sharedethn.io 4 shared
snappa.com 4 shared
verkami.com 4 shared- skool.com 4 shared
exordo.com 4 shared
Closest technology stacks among the highest-authority sites we track; "shared" counts the distinctive technologies in common.
Infrastructure
- Hosted on CARL-CORPORATION (66.71.205.0)
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Dec 2026
- Common Crawl link graph: rank 5,257, 9,216 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| osslabo.doorkeeper.jp | 24 |
| a11yschool.doorkeeper.jp | 22 |
| a11ytokyomeetup.doorkeeper.jp | 22 |
| career-ken.doorkeeper.jp | 22 |
| careerseminar.doorkeeper.jp | 22 |
| ggjsap.doorkeeper.jp | 22 |
| majisemi-data.doorkeeper.jp | 22 |
| swhiroshima.doorkeeper.jp | 22 |
| swniigata.doorkeeper.jp | 22 |
| 8x9trial.doorkeeper.jp | 21 |
| aquent-japan.doorkeeper.jp | 21 |
| cpi-server.doorkeeper.jp | 21 |
| diveintocode.doorkeeper.jp | 21 |
| ezukatechnight.doorkeeper.jp | 21 |
| infosession-online.doorkeeper.jp | 21 |
| majisemi-dev.doorkeeper.jp | 21 |
| majisemi-operation.doorkeeper.jp | 21 |
| monochr.doorkeeper.jp | 21 |
| swizukogen.doorkeeper.jp | 21 |
| swnagaoka.doorkeeper.jp | 21 |
| swsasebo.doorkeeper.jp | 21 |
| uxtalktokyo.doorkeeper.jp | 21 |
| wcan.doorkeeper.jp | 21 |
| 23win2shop.doorkeeper.jp | 20 |