Scan a site

costcotravel.com is ranked in the top 10,000 sites and was registered in 1997. It is built with Material UI and Java; we found no traces of an AI site builder.

Popularity

Website Traffic Checker

Among the top 10K sites.

A popularity band, not a visit count.

Tranco: #16,348 · Chrome UX Report: Top 10,000 · Majestic Million: #57,993

Each list, with its date
SourceSaysAs of
TrancoA research ranking that combines several traffic and link sources, published daily.#16,348list of 27 Oct 2026
Chrome UX ReportRank buckets from Google’s real Chrome traffic, published monthly.Top 10,000Sep 2026
Majestic MillionRanks sites by how many separate networks link to them (links, not visits), published daily. CC BY 3.0#57,993list of 28 Oct 2026
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Technology

Tech Stack Checker

Built with Material UI and Java.

  • Material UICSS frameworkShow evidenceHide evidence
    Evidence · page source, line 1623
    84 class names starting with Mui
    Popular sites using Material UI Is this wrong? Report it
  • JavaLanguageShow evidenceHide evidence
    Evidence · response header
    set-cookie: JSESSIONID=…
    Popular sites using Java Is this wrong? Report it
Everything else it uses (16)

Around it: CDN, Security, DNS, Email and more.

Business tools can stay listed after a site stops using them.

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Trust signals

Website Trust Checker

3 of 7 trust signals found on the home page.

Signals, not a judgement: missing details are common on small, honest sites.

  • Domain registered12 Mar 1997, 29 years agoNoted
  • HTTPSLoads over HTTPS with a valid certificateFound
  • Contact detailsPhone on the home pagePartly
    Show evidenceHide evidence
    Exhibit 1 · page source, line 945Masked 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.
    <a href="tel:+18•••••••25">1-8••-•••-••25</a>
    Is this wrong? Report it
  • Privacy policyLinked from the home pageFound
  • TermsLinked from the home page, and the page opensFound
  • Security filterNot blocked by Cloudflare’s security filter and Quad9’s security filterNoted
Every signal we looked at

On the site

  • Contact pageNo link found on the home pageNot found
  • About pageLinked from the home page, and the page opensFound
  • Privacy policyLinked from the home pageFound
  • TermsLinked from the home page, and the page opensFound
  • Refund or returns policyNo link found on the home pageNot found
  • Contact detailsPhone on the home pagePartly
    Show evidenceHide evidence
    Exhibit 1 · page source, line 945Masked 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.
    <a href="tel:+18•••••••25">1-8••-•••-••25</a>
    Is this wrong? Report it
  • Company detailsNo company name or address foundNot found
  • Payment providersNone on the home pageNoted
  • TrackersNone found on the home pageNoted

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 registered12 Mar 1997, 29 years agoNoteddomain registry
  • HTTPSLoads over HTTPS with a valid certificateFound
  • Protective settings5 of 6 in placeFound
  • Email protectionProtected against forged emailFoundDNS 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

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What it is

Website Summary

It calls itself “Home | Costco Travel”.

In its own wordsHome | Costco TravelCostco Travel offers everyday savings on top-quality, brand-name vacations, hotels, cruises, rental cars, exclusively for Costco members.

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 lineCostco Wholesale
Show evidenceHide evidence
Exhibit 1 · page source, line 1488
Copyright © 2008-2026 Costco Wholesale. All Rights Reserved.
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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

AI use

  • AI training: doesn’t ask AI training crawlers to stay away.
  • AI assistants: may read it for the people who ask them.

What its robots.txt and robots tags ask of AI crawlers. Each crawler chooses whether to follow it.

Site name
Not given
Language
English (en-US)
What it tells search engines
None

Read from what the page says about itself; we haven’t checked whether it’s true.

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Built with AI?

AI Website Detector

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

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

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AI access

AI Crawler Checker

AI can find it and read it: it scores 60 of 100.

It lets every AI crawler in: the site’s choice, never scored.

60of 100

AI readiness

Readable

Its words are in the HTML, with a title and a description.

  1. Findable
  2. Readable
  3. 4Agent-ready

To reach AI-friendly:Structured data +12Sitemap +10

Can AI find it?

20/32

Can AI read it?

40/58

Can agents use it?

0/10

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.

Checked 30 Oct 2026

What to fix

2 fixes, up to +22 points

  • 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://www.costcotravel.com 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.
    +12points

  • 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://www.costcotravel.com/sitemap.xml that lists the site’s public pages, in the sitemaps.org format, and add the line "Sitemap: https://www.costcotravel.com/sitemap.xml" to https://www.costcotravel.com/robots.txt. Generate it from the site’s routes, so new pages are added to it.
    +10points
Optional: 4 fixes few sites have yetup to +18 points

  • 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://www.costcotravel.com 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.
    +10optional

  • 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://www.costcotravel.com/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.
    +4optional

  • 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://www.costcotravel.com 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.
    +2optional
Every check, with its evidence

Can AI find it?

  • robots.txtFound, 23 linesFound
  • 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 scripts15,819 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.
    Home | Costco Travel Skip to main content Login Costco.com Membership Help Center 1-8••-•••-••25 United States Canada Australia Login Deals Deals Popular Limited-Time Deals Member Favorites What's…
    Is this wrong? Report it
  • 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 64
    <title>Home | Costco Travel</title>
    Exhibit 2 · page source, line 64
    <meta name="description" content="Costco Travel offers everyday savings on top-quality, brand-name vacations, hotels, cruises, rental cars, exclusively for Costco members.">
    Is this wrong? Report it
  • 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 scored

Keeping 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

Its robots.txt names none of the 24 crawlers of the 10 AI companies we know, so it lets every one in.

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 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.

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Score breakdown

Site Score

85 of 100: strong trust signals.

How established and checkable it is; AI traces carry no weight.

85of 100
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 protections15 / 15
ConsistencyName, description and what it tells search engines7 / 10
Why each part scored what it did
TransparencyContact, policies and about page18 / 30no contact page link · email and phone not both given · privacy policy linked · terms linked · no payments seen, so no refund policy needed · about page linked
Track recordHow long the domain has existed25 / 25domain registered 29 years ago
PopularityIts place in public rankings20 / 20Top 10K in a popularity list
Security and setupHTTPS and standard protections15 / 15loads over HTTPS · sends visitors to HTTPS · always uses HTTPS · 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.

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Domain history

Domain History

Registered in 1997.

  1. Domain registeredRDAP
  2. This scanCheckAnySite

The web archive couldn’t be reached; we’ll ask it again. Why can this be empty?

Changes, earlier scans and alerts
Since our previous scan
This is our first scan of the site.
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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 30 Oct 2026, with version 0.6.0 of our checks and version 1.1 of the score.

How we work · What each version changed · About our scanner

Quick look

Built with AI?

None foundWe found no AI builder traces.

“None found” never means “made by a person”: coding assistants leave no traces.

All the evidence →

Related

Quick look

How popular is it?

Top 10KBy the best of 3 public lists.

  • Tranco#16,348list of 27 Oct 2026
  • Chrome UX ReportTop 10,000Sep 2026
  • Majestic Million#57,993list of 28 Oct 2026

A popularity band, never a visit count.

The popularity section →

Related

Quick look

What is it built with?

CSS framework
Material UI
Language
Java

And 16 more around it (CDN, Security, DNS, Email), in the section.

Each with its evidence →

Related

Quick look

Which trust signals does it show?

On the site

  • Contact pageNot found
  • About pageFound
  • Privacy policyFound
  • TermsFound
  • Refund or returns policyNot found
  • Contact detailsPartly
  • Company detailsNot found
  • Payment providersNoted
  • TrackersNoted

Behind the site

  • Security filterNoted
  • Domain registeredNoted
  • HTTPSFound
  • Security headersFound
  • Software versionsNoted
  • NetworkNoted
  • Email setupFound
  • First certificateCouldn’t check
  • DNSSECNot found
  • Certificate authoritiesNot found
  • Security contactNot found

Signals, not a judgement: missing details are common on small, honest sites.

Every signal with its source →

Related

How has it changed? →
Quick look

How does it add up?

85of 100

Strong trust signals. An open formula (v1.1): every point comes from a finding above. 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 protections15 / 15
ConsistencyName, description and what it tells search engines7 / 10
Why each part scored what it did →

Related

Questions about costcotravel.com

What is costcotravel.com?

costcotravel.com describes itself: “Costco Travel offers everyday savings on top-quality, brand-name vacations, hotels, cruises, rental cars, exclusively for Costco members.” See the evidence

How old is costcotravel.com?

Its domain was registered on 12 Mar 1997, 29 years ago. See the evidence

What is costcotravel.com built with?

It is built with Material UI and Java; we found 18 technologies in all. See the evidence

How popular is costcotravel.com?

It is among the top 10,000 sites, by Tranco, Chrome UX Report and Majestic Million. See the evidence

Was costcotravel.com 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 costcotravel.com?

Its copyright line names Costco Wholesale. See the evidence

More sites near it in popularity

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

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.

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The result describes what we found on 30 Oct 2026, with evidence.

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One scan answers everything: AI traces, popularity, technology, trust signals, how the site describes itself, a score and its history. A quick check only decides which answer comes first. We read public pages as CheckAnySiteBot and follow robots.txt.