NPB.jp 日本野球機構
npb.jp
In its own wordsNPB.jp 日本野球機構日本野球機構（NPB）オフィシャルサイト。プロ野球12球団の試合日程・結果や予告先発、ドラフト会議をはじめ、事業・振興に関する情報を掲載。また、オールスター･ゲームや日本シリーズなど主催試合のチケット情報もご覧いただけます。
npb
NPB.jp 日本野球機構 (npb.jp) is ranked in the top 10,000 sites and was registered in 2001. It is built with jQuery; we found no traces of an AI site builder.
Popularity
Website Traffic CheckerAmong the top 10K sites.
A popularity band, not a visit count.
Top 1KTop 10KTop 100KTop 1MOutside top 1M
Tranco: #19,144 · Chrome UX Report: Top 10,000 · Majestic Million: #32,713
Each list, with its date
| Source | Says | As of |
|---|---|---|
| TrancoA research ranking that combines several traffic and link sources, published daily. | #19,144 | list of 27 Oct 2026 |
| Chrome UX ReportRank buckets from Google’s real Chrome traffic, published monthly. | Top 10,000 | Sep 2026 |
| Majestic MillionRanks sites by how many separate networks link to them (links, not visits), published daily. CC BY 3.0 | #32,713 | list of 28 Oct 2026 |
Technology
Tech Stack CheckerBuilt with jQuery and Slick.
jQueryJavaScript libraryShow evidenceHide evidence
Evidence · page source, line 28Popular sites using jQuery Is this wrong? Report it<script src="/common/js/jquery-1.11.3.min.js">
SlickJavaScript libraryShow evidenceHide evidence
Evidence · page source, line 37Popular sites using Slick Is this wrong? Report it<script src="/common/js/slick.min.js">
Everything else it uses (5)
Around it: CDN, Security, Analytics, Tag manager and more.
CloudflareCDNShow evidenceHide evidence
Evidence · response headerPopular sites using Cloudflare Is this wrong? Report itcf-ray: a53bb9881dc4b6b5-OTP
F5 BIG-IPSecurityShow evidenceHide evidence
Evidence · response headerPopular sites using F5 BIG-IP Is this wrong? Report itset-cookie: BIGipServernpb.jp-https=…
Google AnalyticsAnalyticsShow evidenceHide evidence
Evidence · page source, line 70Popular sites using Google Analytics Is this wrong? Report it<script src="https://www.googletagmanager.com/gtag/js?id=G-XJYGG95SMT">
Google Tag ManagerTag managerShow evidenceHide evidence
Evidence · page source, line 6Popular sites using Google Tag Manager Is this wrong? Report it…'+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f…
Google FontsFontsShow evidenceHide evidence
Evidence · stylesheet /common/css/format.cssPopular sites using Google Fonts Is this wrong? Report it@charset "UTF-8"; @import url(https://fonts.googleapis.com/css?family=Titillium+Web:400,400italic,600,…
Trust signals
Website Trust Checker2 of 7 trust signals found on the home page.
Signals, not a judgement: missing details are common on small, honest sites.
- Domain registered26 Mar 2001, 25 years agoNoted
- HTTPSLoads over HTTPS with a valid certificateFound
- Contact detailsNo email or phone on the home pageNot found
- Privacy policyLinked from the home page, and the page opensFound
- TermsNot linked on its own; a legal page is linked, which may hold itPartly
- Security filterNot blocked by Cloudflare’s security filter and Quad9’s security filterNoted
Every signal we looked at
On the site
- Contact pageLinked from the home page, and the page opensFound
- About pageNo link found on the home pageNot found
- Privacy policyLinked from the home page, and the page opensFound
- TermsNot linked on its own; a legal page is linked, which may hold itPartly
- Refund or returns policyNo link found on the home pageNot found
- Contact detailsNo email or phone on the home pageNot found
- Company detailsNo company name or address foundNot found
- Payment providersNone on the home pageNoted
- Trackers1 analytics and advertising tool: Google AnalyticsNoted
Behind the site
- Security filterNot blocked by Cloudflare’s security filter and Quad9’s security filterNotedCloudflare’s security filter and Quad9’s security filter
- Domain registered26 Mar 2001, 25 years agoNotedWHOIS (whois.jprs.jp)
- HTTPSLoads over HTTPS with a valid certificateFound
- Protective settingsNone in placeNot found
- Email protectionPartly protected against forged emailPartlyDNS records
A second opinion on its security setup: Mozilla’s HTTP Observatory grades the site when you open it. Ten checks before you buy · A signal looks wrong? Report it
What it is
Website SummaryIt calls itself “NPB.jp 日本野球機構”.
In its own wordsNPB.jp 日本野球機構日本野球機構（NPB）オフィシャルサイト。プロ野球12球団の試合日程・結果や予告先発、ドラフト会議をはじめ、事業・振興に関する情報を掲載。また、オールスター･ゲームや日本シリーズなど主催試合のチケット情報もご覧いただけます。
The page doesn’t show enough to say what kind of site it is (a shop, a blog, an app…).
Who is behind it
- copyright lineNippon Professional Baseball Organization
- WikidataNippon Professional Baseball
Confirmed by 2 independent sources: copyright line and Wikidata.
Wikidata: Based in Shiba, Japan.
Its X and Facebook accounts are the ones Wikidata lists.
Show evidence (2)Hide evidence
Exhibit 1 · page source, line 2092
Copyright (C) 1996-2026 Nippon Professional Baseball Organization. All Rights Reserved.
Exhibit 2 · Wikidata
Is this wrong? Report itQ1146127: Nippon Professional Baseball
Each name is quoted from its source. A brand and the company that owns it often go by different names.
More about it: Wikidata, profiles, AI use, page facts
In Wikidata
- Nippon Professional Baseball: baseball league representing the highest level of professional baseball in Japan · professional sports league, sports organization, baseball league · since 1948
- NPB official website: official website of Nippon Professional Baseball Organization · website
Wikidata, the free knowledge base behind Wikipedia, lists this domain as the official website of these items. Volunteers write it; each item shows its sources.
Find them on
The profiles its home page links. We haven’t checked who runs them.
- Site name
- NPB.jp 日本野球機構
- Language
- Japanese (ja)
- What it tells search engines
- None
Read from what the page says about itself; we haven’t checked whether it’s true.
Built with AI?
AI Website DetectorNo AI builder traces found.
We look for what AI site builders such as Lovable, Bolt and v0 leave in a page. Code written with an AI assistant such as Cursor, Claude Code or ChatGPT leaves nothing to find, so we can’t tell whether AI helped.
AI traces: None found
How we know
AI site builders leave traces in the sites they make. We look for the traces of 53 of them and show every match with the line it came from, so you can check it yourself.
We test this on 2,275 sites whose makers we know, and publish what we get wrong.
How we test it · Every builder we know · How to tell if a site was built with AI
AI access
AI Crawler CheckerAI can find it and read it: it scores 60 of 100.
It lets every AI crawler in: the site’s choice, never scored.
AI readiness
Readable
Its words are in the HTML, with a title and a description.
- Findable
- Readable
- 3AI-friendly
- 4Agent-ready
To reach AI-friendly:Structured data +12Sitemap +10
Can AI find it?
20/32- Search listing
- Sitemap
- robots.txt
- Links for AI tools
Can AI read it?
40/58- Text without scripts
- Title and description
- Structured data
- llms.txt
- Markdown copy
Can agents use it?
0/10Optional: for sites with an API or a sign-in.
Below the median of the 2,439 most visited sites we read, which is 72.
Checked 1 Nov 2026
What to fix
2 fixes, up to +22 points
- +12points
Structured data
Now None found.
Add schema.org structured data, as JSON-LD, to the home page’s HTML.
Details
Why it matters: Structured data tells AI tools and search engines what the site is: a company, a shop, a product.
Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)Add schema.org structured data to the home page of https://npb.jp as JSON-LD, in a <script type="application/ld+json"> tag in its HTML: an Organization with its name, url, logo and sameAs links to its official profiles, and a WebSite with its name and url. Add the type that fits what the site offers too, such as Product, Article or LocalBusiness. Use only facts that are true of the site.
- +10points
Sitemap
Now None found.
Publish an XML sitemap and list it in robots.txt.
Details
Why it matters: A sitemap lists every page, so crawlers find the ones no link leads to.
Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)Add an XML sitemap at https://npb.jp/sitemap.xml that lists the site’s public pages, in the sitemaps.org format, and add the line "Sitemap: https://npb.jp/sitemap.xml" to https://npb.jp/robots.txt. Generate it from the site’s routes, so new pages are added to it.
Optional: 4 fixes few sites have yetup to +18 points
- +10optional
Files for AI agents
Now None of the 8 we look for.
If agents could use the site, publish what they need where they look.
Details
Why it matters: Agents act for people: they look for these files to know what a site lets them do. Worth it only if agents can use the site.
Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)If AI agents could use https://npb.jp for its visitors (to search it, book, buy or sign in), publish what they need at the standard addresses, and only what the site really offers: an MCP server card at /.well-known/mcp/server-card.json if it runs an MCP server, an API catalog at /.well-known/api-catalog (RFC 9727) listing its public APIs, and OAuth protected resource metadata at /.well-known/oauth-protected-resource (RFC 9728) if agents sign in.
- +4optional
llms.txt
Now None found.
Publish a short Markdown summary of the site at /llms.txt.
Details
Why it matters: A short summary for AI models, at an address they can find. A proposal: few AI companies say they read it yet.
Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)Create https://npb.jp/llms.txt as llmstxt.org describes it: a Markdown file with an H1 naming the site, a one-paragraph summary in a blockquote, and short sections listing its most useful pages as links, each with a line on what it holds. Serve it as text/plain or text/markdown.
- +2optional
Links for AI tools
Now None in the home page’s headers.
Point AI tools to the site’s files in the home page’s Link header.
Details
Why it matters: A Link header points AI tools to a site’s files from any page, without guessing addresses.
Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)Make the home page of https://npb.jp send a Link header (RFC 8288) that points AI tools to the site’s files, for example: Link: </sitemap.xml>; rel="sitemap", </llms.txt>; rel="describedby"; type="text/plain". List only files the site serves.
- +2optional
Markdown copy
Now Not offered: it sends the page’s HTML.
Answer requests for Markdown with a Markdown version of the page.
Details
Why it matters: A Markdown copy gives AI tools the page’s words without the HTML around them.
Prompt for your coding assistant (Claude Code, Cursor, your builder’s chat)When a request to https://npb.jp asks for Markdown (its Accept header includes text/markdown), answer with a Markdown version of the page’s main content and the header Content-Type: text/markdown. Requests for HTML keep getting HTML; add Vary: Accept so caches keep the two apart.
Every check, with its evidence
Can AI find it?
- robots.txtNone, so every crawler may read every pageNot found
- SitemapNone foundNot found
- Links for AI toolsNone in the home page’s headersNot found
- Search listingAllowed: no noindex ruleAllowed
Can AI read it?
- Text without scripts4,007 characters before scripts runFound
Show evidenceHide evidence
Exhibit 1 · page text, before scripts runMasked for privacy. An email address or phone number can belong to a person, and data protection law, such as the EU’s GDPR, asks us to keep only what we need: that the page lists one, and where.Is this wrong? Report itNPB.jp 日本野球機構 日本野球機構オフィシャルサイト 試合 セ・パ公式戦 公示 セ・パ交流戦 日本シリーズ オールスター・ゲーム オープン戦 特別試合 ファーム公式戦 ファーム日本選手権 フレッシュオールスター・ゲーム イースタン・リーグ チャレンジ・マッチ 春季教育リーグ 秋季教育リーグ 成績・記録 シーズン成績 表彰選手 達成記録 年度別成績（19••-••26）…
- Markdown copyNot offered: it sends the page’s HTMLNot found
- llms.txtNone foundNot found
- Title and descriptionBothFound
Show evidence (2)Hide evidence
Exhibit 1 · page source, line 57<title>NPB.jp 日本野球機構</title>
Exhibit 2 · page source, line 18Is this wrong? Report it<meta name="description" content="日本野球機構（NPB）オフィシャルサイト。プロ野球12球団の試合日程・結果や予告先発、ドラフト会議をはじめ、事業・振興に関する情報を掲載。また、オールスター･ゲームや日本シリーズなど主催試合のチケット情報もご覧いただけます。">
- Structured dataNone foundNot found
Can agents use it?
- API catalogNone foundNot found
- Sign-in for AI agentsNone foundNot found
- Auth.mdNone foundNot found
- AI catalogNone foundNot found
- MCP serverNone foundNot found
- Agent cardNone foundNot found
- Agent SkillsNone foundNot found
- Agents in DNSNone foundNot found
What it lets AI do
Not scoredKeeping AI out is the site’s choice, so it never lowers the score.
- AI trainingOpenAI, Anthropic, Google, Meta and 4 moreLet in
- AI answers and searchOpenAI, Anthropic, Google, Perplexity and 3 moreLet in
Every AI crawler, and how we checked
AI companies
It has no robots.txt, so the 24 crawlers of the 10 AI companies we know may read every page.
None of the 27 other AI crawlers we know is kept out.
What it tells AI crawlers
It gives no Content Signals and no “noai” tag.
If this is your site
- Decide what AI may do with the site, and say it in robots.txt. Write the lines
Like 71% of the 425 popular sites whose robots.txt we’ve read since 29 Oct 2026, it keeps no AI training crawler out. Of the 542 popular sites we’ve checked since 29 Oct 2026, 9% have a page drawn by scripts, 2% send a Markdown copy, 9% have an llms.txt and 3% offer a file for AI agents. How many websites block AI crawlers?
We read the site once, as our named bot: its robots.txt, read as crawlers read it, its home page and the files AI tools ask sites for. What we couldn’t read says so. robots.txt asks and doesn’t enforce: a firewall can treat AI crawlers differently from us.
Score breakdown
Site Score81 of 100: strong trust signals.
How established and checkable it is; AI traces carry no weight.
TransparencyContact, policies and about page18 / 30
Track recordHow long the domain has existed25 / 25
PopularityIts place in public rankings20 / 20
Security and setupHTTPS and standard protections11 / 15
ConsistencyName, description and what it tells search engines7 / 10
Why each part scored what it did
TransparencyContact, policies and about page18 / 30contact page linked · email and phone not both given · privacy policy linked · terms: not linked on its own; a legal page is linked, which may hold it · no payments seen, so no refund policy needed · no about page link
Track recordHow long the domain has existed25 / 25domain registered 25 years ago
PopularityIts place in public rankings20 / 20Top 10K in a popularity list
Security and setupHTTPS and standard protections11 / 15loads over HTTPS · sends visitors to HTTPS · doesn’t insist on HTTPS · no protective settings
ConsistencyName, description and what it tells search engines7 / 10site name matches the domain · describes itself · doesn’t tell search engines what it is
A high score isn’t a promise that a business is honest. How the score works.
Domain history
Domain HistoryRegistered in 2001; first archived in 2015.
- Domain registeredWHOIS (whois.jprs.jp)
- First captured by the web archiveInternet Archive
- This scanCheckAnySite
In the web archive: captured in 12 of 12 years · see the first capture
- 2015: captured
- 2016: captured
- 2017: captured
- 2018: captured
- 2019: captured
- 2020: captured
- 2021: captured
- 2022: captured
- 2023: captured
- 2024: captured
- 2025: captured
- 2026: captured
Changes, earlier scans and alerts
- Since our previous scan
- This is our first scan of the site.
How we scanned it
Only from what anyone can see: the site’s public pages and public records.
- Politely. Our scanner, CheckAnySiteBot, says who it is and follows the site’s robots.txt.
- With sources. Every fact above says where it came from and when.
- Without guessing. When we couldn’t check something, we say so.
This scan, in numbers
936 checks on 1 Nov 2026, with version 0.6.0 of our checks and version 1.1 of the score.
Questions about npb.jp
What is npb.jp?
NPB.jp 日本野球機構 describes itself: “日本野球機構（NPB）オフィシャルサイト。プロ野球12球団の試合日程・結果や予告先発、ドラフト会議をはじめ、事業・振興に関する情報を掲載。また、オールスター･ゲームや日本シリーズなど主催試合のチケット情報もご覧いただけます。” See the evidence
How old is npb.jp?
Its domain was registered on 26 Mar 2001, 25 years ago. See the evidence
What is npb.jp built with?
It is built with jQuery; we found 7 technologies in all. See the evidence
How popular is npb.jp?
It is among the top 10,000 sites, by Tranco, Chrome UX Report and Majestic Million. See the evidence
Was npb.jp made with AI?
We found no traces of an AI site builder. That doesn’t prove a person built it: AI coding assistants leave no traces. See the evidence
Who is behind npb.jp?
Nippon Professional Baseball Organization, named by its copyright line and Wikidata. See the evidence
More sites near it in popularity
Automated findings from the site’s public home page and public records, as of 1 Nov 2026. They describe what we found, not the people or business behind the site, and they may be incomplete or out of date. This is information, not advice. Terms · Report an error
What this scan can’t tell you
- Whether the business is real, honest or delivers what it sells.
- Whether a site was made with AI when no traces were left: coding assistants and hand edits leave none.
- How many people visit: we show popularity bands from public lists, not visits.
- Anything beyond the home page as it was at the time of the scan.
Is this your site? Ask for a correction.