What powers 
gakken.co.jp?
Last seen Sep 2026 · 57 technologies across 27 categories
Accessibility
Advertising
Analytics
CDN
CMS
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Load balancers
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
RUM
Security
SEO
Tag managers
UI frameworks
Web frameworks
Web servers
Webmail
Widgets
WordPress plugins
WordPress themes
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 *: Allowed (was Restricted)
- Sep 2026 *: Restricted (was Allowed)
- Sep 2026 *: Allowed (was Restricted)
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| ghd group | #71 | 1 |
| intra-hd | #59 | 0 |
| hld index | #88 | 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
- 84% desktop
- 16% phone
Japan
United States
Indonesia
Vietnam
South Korea
Thailand
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
7.51 / 10 · ranked #17,234 of all domains
941 referring domains · OpenPageRank
Search traffic
1 est. monthly organic visits (US)
3 keywords in Google's top 30
Core Web Vitals
| LCP | 1.5 s |
| INP | 100 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Japanese
- CDN: Amazon CloudFront
- Weight: 3.2 MB · 22 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Similar sites
ynu.ac.jp 5 shared
- trccompanies.com 3 shared
- roukyou.gr.jp 4 shared
stonyfield.com 3 sharedzennichi.or.jp 3 shared
- wakasa.jp 3 shared
kagoshima-u.ac.jp 4 shared
- hiho.jp 3 shared
Closest technology stacks among the highest-authority sites we track; "shared" counts the distinctive technologies in common.
Organisation
- 学研キッズネット (Gakken Holdings on Wikidata)
- Founded: 1946
- Sector: publishing industry, video game industry
- Country: Japan
- Profiles: X, Instagram, Facebook, YouTube
From the homepage's own structured data (Oct 2026) and Wikidata (CC0).
Infrastructure
- Hosted on BBTOWER BroadBand Tower, Inc. (203.216.223.33)
- DNS: vips.ne.jp
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record
- SSL: GlobalSign, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 45,369, 27 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| kids.gakken.co.jp | 27 |
| saiyo.gakken.co.jp | 22 |
| gakken.co.jp | 20 |
| cocofump.gakken.co.jp | 19 |
| gakkokyoiku.gakken.co.jp | 19 |
| ghd.gakken.co.jp | 17 |
| www.gakuryoku.gakken.co.jp | 17 |
| khd.gakken.co.jp | 16 |
| recruit.gakken.co.jp | 15 |
| kabuyutai.gakken.co.jp | 14 |
| thinquest.gakken.co.jp | 13 |
| ir.gakken.co.jp | 10 |
| www.gakken.co.jp | 10 |
| contact.gakken.co.jp | 1 |
Full technology history →
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Recent changes
- dropped Treasure Data Sep 2026
- dropped AOS Aug 2026
- detected All in One SEO Jul 2026
- detected cdnjs Jul 2026
- detected Cloudflare Jul 2026
- detected Priority Hints Jul 2026
- dropped Autoptimize May 2026
- dropped D3 May 2026
- dropped LazySizes May 2026
- dropped Plotly May 2026
- detected Akamai Feb 2026
- detected Akamai mPulse Feb 2026
- detected Boomerang Feb 2026
- detected UserWay Feb 2026