IOE - Cuộc thi Olympic tiếng Anh trực tuyến số 1 Việt Nam
In its own wordsIOE: Hấp dẫn - mê say - thấy ngay kết quả - Trang chủOlympic tiếng anh, thi tiếng anh internet, thi tiếng anh trực tuyến, kiểm tra kiến thức tiếng anh,English Online Contest, Olympic English, goIOE, IOE, hấp dẫn, mê say, kết quả
ioe.vn is ranked in the top 10,000 sites. It is built with Bootstrap and jQuery; we found no traces of an AI site builder.
Among the top 10K sites.
A popularity band, not a visit count.
Tranco: #16,275 · Chrome UX Report: Top 5,000 · Majestic Million: #628,546
| Source | Says | As of |
|---|---|---|
| TrancoA research ranking that combines several traffic and link sources, published daily. | #16,275 | list of 27 Oct 2026 |
| Chrome UX ReportRank buckets from Google’s real Chrome traffic, published monthly. | Top 5,000 | Sep 2026 |
| Majestic MillionRanks sites by how many separate networks link to them (links, not visits), published daily. CC BY 3.0 | #628,546 | list of 28 Oct 2026 |
Built with jQuery, Swiper and Bootstrap.
<script src="/lib/jquery/dist/jquery.min.js?v=639274887820210220">
<script src="/lib/swiper/swiper-bundle.min.js?v=639274887820210220">
<script src="/lib/bootstrap/dist/js/bootstrap.bundle.min.js?v=639274887820210220">
Around it: CDN, DNS, Analytics, Tag manager and more.
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css?v=639274887820210220">
cf-ray: a527d16a8a15ae4c-EWR
ioe.vn NS dahlia.ns.cloudflare.com.
<script src="https://www.googletagmanager.com/gtag/js?id=G-W6EYX8VWWZ">
….src = 'https://www.googletagmanager.com/gtm.js?id=' + i + dl; f.parentNode.insertBefor…
ioe.vn TXT google-site-verification=W4YqxDu9_gyXFAViTJL7fcMZs8JSIptKlw4a-npN42A
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css?v=639274887820210220">
ioe.vn TXT _globalsign-domain-verification=MSddwizMGYR7LFbFJla97u0NXwsP9RVoq8b2IzRbMF
Business tools can stay listed after a site stops using them.
3 of 7 trust signals found on the home page.
Signals, not a judgement: missing details are common on small, honest sites.
<a href="tel:19••••••76"></a>
<a href="tel:19••••••76"></a>
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
It calls itself “IOE: Hấp dẫn - mê say - thấy ngay kết quả - Trang chủ”.
In its own wordsIOE: Hấp dẫn - mê say - thấy ngay kết quả - Trang chủOlympic tiếng anh, thi tiếng anh internet, thi tiếng anh trực tuyến, kiểm tra kiến thức tiếng anh,English Online Contest, Olympic English, goIOE, IOE, hấp dẫn, mê say, kết quả
The page doesn’t show enough to say what kind of site it is (a shop, a blog, an app…).
© 2026 VTC Online. All rights reserved.
Each name is quoted from its source. A brand and the company that owns it often go by different names.
Read from what the page says about itself; we haven’t checked whether it’s true.
No AI builder traces found.
Coding tools such as Cursor leave no traces, so this doesn’t mean a person made it.
AI traces: None found
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 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
Its words are in the HTML, with a title and a description.
To reach AI-friendly:Structured data +12Sitemap +10
Optional: for sites with an API or a sign-in.
Below the median of the 2,439 most visited sites we read, which is 72.
Structured data
Now None found.
Add schema.org structured data, as JSON-LD, to the home page’s HTML.
Why it matters: Structured data tells AI tools and search engines what the site is: a company, a shop, a product.
Add schema.org structured data to the home page of https://ioe.vn 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.
Sitemap
Now None found.
Publish an XML sitemap and list it in robots.txt.
Why it matters: A sitemap lists every page, so crawlers find the ones no link leads to.
Add an XML sitemap at https://ioe.vn/sitemap.xml that lists the site’s public pages, in the sitemaps.org format, and add the line "Sitemap: https://ioe.vn/sitemap.xml" to https://ioe.vn/robots.txt. Generate it from the site’s routes, so new pages are added to it.
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.
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.
If AI agents could use https://ioe.vn 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.
llms.txt
Now None found.
Publish a short Markdown summary of the site at /llms.txt.
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.
Create https://ioe.vn/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.
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.
Why it matters: A Link header points AI tools to a site’s files from any page, without guessing addresses.
Make the home page of https://ioe.vn 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.
Markdown copy
Now Not offered: it sends the page’s HTML.
Answer requests for Markdown with a Markdown version of the page.
Why it matters: A Markdown copy gives AI tools the page’s words without the HTML around them.
When a request to https://ioe.vn 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.
IOE: Hấp dẫn - mê say - thấy ngay kết quả - Trang chủ Khám phá Ban chỉ đạo Đơn vị thực hiện Đăng ký Đăng nhập ID: ID: Tài khoản MyIOE Thành tích cá nhân Mua gói dịch vụ Đăng xuất Khám phá Trang chủ…
<title>IOE: Hấp dẫn - mê say - thấy ngay kết quả - Trang chủ</title>
<meta name="description" content="Olympic tiếng anh, thi tiếng anh internet, thi tiếng anh trực tuyến, kiểm tra kiến thức tiếng anh,English Online Contest, Olympic English, goIOE, IOE, hấp dẫn, mê say, kết quả">
Keeping AI out is the site’s choice, so it never lowers the score.
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.
It gives no Content Signals and no “noai” tag.
Like 68% of the 1,691 popular sites whose robots.txt we read in October 2026, it keeps no AI training crawler out. 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.
77 of 100: strong trust signals.
How established and checkable it is; AI traces carry no weight.
Scored on the parts we could check.
A high score isn’t a promise that a business is honest. How the score works.
No registration date or archive capture found.
The web archive couldn’t be reached; we’ll ask it again. Why can this be empty?
Only from what anyone can see: the site’s public pages and public records.
935 checks on 30 Oct 2026, with version 0.6.0 of our checks and version 1.1 of the score.
ioe.vn describes itself: “Olympic tiếng anh, thi tiếng anh internet, thi tiếng anh trực tuyến, kiểm tra kiến thức tiếng anh,English Online Contest, Olympic English, goIOE, IOE, hấp dẫn, mê say, kết quả” See the evidence
It is built with Bootstrap and jQuery; we found 11 technologies in all. See the evidence
It is among the top 10,000 sites, by Tranco, Chrome UX Report and Majestic Million. See the evidence
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
Its copyright line names VTC Online. See the evidence
Automated findings from the site’s public home page and public records, as of 30 Oct 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
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