estuda.com — domain analysis

200HTTP status

86msResponse time

3,655Words on the homepage

3/6Security headers set

What is estuda.com about?

The words appearing most often on the homepage, excluding common filler, are
a rough indication of subject matter rather than a description of the business:

• quest ×56
• estuda ×50
• para ×49
• estudos ×47
• mais ×39
• plano ×35
• provas ×31
• enem ×29
• reda ×28
• relat ×22

Does estuda.com publish the usual trust pages?

None of about, contact, privacy or terms could be found at their usual addresses.
That is common for small or single-purpose sites, and it is also what a disposable
site looks like, so it is worth noting rather than concluding from.

These were checked at conventional paths only, so a site using different URLs may
publish them elsewhere.

How does estuda.com compare with other domains analysed here?

Measured against the 74 domains in this index. This is a
small, self-selected sample — the domains people happened to look up — not a
representative sample of the web.

Related domains in this index

Analysed domains sharing the same network (AS16509 Amazon.com, Inc.):

• careinsurance.com
• carfax.com
• deacordo.com
• gynoveda.com
• porta.com
• theadvertiser.com.au
• walmartdot.com

Sharing a network means sharing a host or CDN. It implies nothing about a
relationship between the sites themselves.

Analysed domains built on a similar stack:

• blabtime.com
• brandcolumn.com
• brandhivey.com
• businessofminds.com
• boll.com
• dellacooks.com
• dizi.com
• dmfollow.com

Other analysed domains served from the same country:

• bayt.com
• ghanaweb.com
• hajir.com
• lowes.com
• prm.com
• vrbo.com
• weekday.com

When was estuda.com registered?

estuda.com was registered on 11 November 1997, which makes it about 28 years old.

A registration this old means the domain has been renewed repeatedly, which costs money every year and is not something abandoned or disposable projects tend to do.

The registrar of record is GoDaddy.com, LLC.

Registration runs until 10 November 2029.

The domain carries 4 registry locks, which blocks unauthorised transfer or deletion.

Where is estuda.com hosted?

The first address resolves to infrastructure in Frankfurt am Main, Germany.

The network is operated by AWS CloudFront (GLOBAL) (AS16509 Amazon.com, Inc.).

Hosting location describes where the responding server sits, not where the business is. A CDN will report its nearest edge rather than the origin.

What is estuda.com running on?

estuda.com exposes 4 identifiable technologies: WordPress, jQuery, Google Tag Manager, Cloudflare.

WordPress is identifiable from its asset paths, so the platform is public knowledge regardless of whether the version is hidden. That matters mainly for patching discipline: known-platform sites are scanned automatically and constantly.

Cloudflare sits in front of the origin, so the server header, IP addresses and response timing describe the edge rather than the machine actually running the site.

Visitor tracking is present (Google Tag Manager), so this homepage is not cookie-free.

• WordPress
• jQuery
• Google Tag Manager
• Cloudflare

How does the homepage respond?

The server answered with HTTP 200 over
HTTPS.

At 86ms to first byte this response is fast for a homepage measured from a single European location.

The HTML alone is 513KB before images, stylesheets or scripts are counted, which is heavy for a document that browsers must parse before anything renders.

The HTML is compressed with gzip.

What does the homepage say about itself?

The title is 57 characters, inside the range that displays without truncation.

A meta description of 159 characters is present.

There are 3 H1 headings. One is conventional; several dilute the signal about what the page is primarily about.

5 of 51 images carry no alt attribute, which leaves them unreadable to screen readers and uninterpretable to image search.

Is estuda.com served over a valid certificate?

The HTTPS certificate is issued by Amazon and is
valid until 2027-03-23, which is 169 days from the date of this check. It covers
2 hostnames.

• estuda.com
• www.estuda.com

The certificate has 169 days left to run.

It covers 2 hostnames, so it was issued for this site specifically.

Which security headers does it set?

3 of 6 are set (X-Content-Type-Options, Referrer-Policy, Permissions-Policy). Absent: HSTS, Content Security Policy, X-Frame-Options.

Without HSTS, a browser that has never visited before will try HTTP first, which is the window a network attacker needs.

With no Content Security Policy, any script that reaches the page — including one injected through a compromised third-party dependency — runs with full access to it.

How is DNS configured for estuda.com?

estuda.com resolves to 4 addresses, which indicates load balancing or a CDN rather than a single origin server.

Mail is handled by 5 exchangers.

An SPF record is published, giving receiving servers a rule for which hosts may send as this domain.

Reverse DNS resolves to server-52-222-236-92.fra56.r.cloudfront.net, server-52-222-236-117.fra56.r.cloudfront.net, which usually names the hosting provider.

Who runs DNS and mail for estuda.com?

DNS is operated by Amazon Route 53 rather than self-hosted name servers.

Mail is handled by Google Workspace.

No AAAA records are published, so the site is reachable over IPv4 only.

What else is worth noting about estuda.com?

31 of 32 externally hosted scripts carry no subresource integrity hash. If one of those hosts were compromised, the replacement script would run with full access to the page.

Can estuda.com be spoofed in email?

DMARC is published with p=none, which monitors but does not act. Forged mail is still delivered; the owner just gets reports about it.

No CAA records are published, so any certificate authority may issue a certificate for this domain.

The zone is not DNSSEC-signed. That is still the norm for most domains, but it means DNS answers cannot be cryptographically verified.

What does robots.txt allow?

robots.txt is 72 bytes and names
1 user-agent group.

It does not blanket-disallow general crawlers.

Sitemaps declared:

• https://estuda.com/sitemap_index.xml

AI crawler policy

robots.txt names no AI crawlers specifically, so they fall under whatever rule
applies to User-agent: *.

What structured data does the homepage publish?

• Organization
• ImageObject
• WebSite
• SearchAction
• EntryPoint
• FAQPage
• Question
• Answer

The homepage publishes 8 structured data types: Organization, ImageObject, WebSite, SearchAction, EntryPoint, FAQPage, Question, Answer.

What does estuda.com load from third parties?

The homepage pulls resources from 8 third-party hosts (ajax.googleapis.com, fonts.gstatic.com, gmpg.org, googleoptimize.com, googletagmanager.com, sb.scorecardresearch.com). Each one sees the visitor IP and user agent on every page load.

No cookies are set on first load.

1 resource is referenced over plain HTTP on an HTTPS page, which browsers block or flag as mixed content.

The page links or refers to X/Twitter, LinkedIn, Facebook, Instagram, YouTube, GitHub.

Does estuda.com settle on one address?

Plain HTTP redirects to HTTPS, so visitors who type the bare address still land on the secure version.

Both estuda.com and www.estuda.com answer with 200 and neither redirects to the other. Search engines therefore see two complete copies of the site, and link equity is split between them unless a canonical tag resolves it.

How easily can estuda.com be crawled?

A sitemap index is served at https://estuda.com/sitemap_index.xml listing 3 entries.

The most recent lastmod date is 2026-10-01.

A deliberately invalid URL correctly returns HTTP 404, so missing pages will not be indexed.

What tracking does estuda.com run?

1 tracking script detected: Google Tag Manager.

A consent platform is in place (Complianz), so in the EU and UK these should only fire after the visitor agrees.

How does estuda.com look when shared?

All five social preview tags are present, so links shared to social platforms and chat apps will render with a title, description and image.

How are images, fonts and scripts handled?

51 images on the homepage, 0 of them lazy-loaded (0%).

Modern image formats are in use (38 WebP/AVIF references).

Fonts are loaded from Google Fonts, which means every page view also contacts Google. Self-hosting removes that dependency.

The page pulls 72 external stylesheets and 32 external scripts, with 0 carrying defer or async.

Responses carry Cloudflare and Amazon CloudFront and edge cache edge headers, so content is served from a CDN rather than straight from the origin.

Is estuda.com accessible and current?

The page uses 6 landmark elements and 349 ARIA attributes.

The visible copyright notice reads 2006, 20 years behind the current year, which usually indicates the site is not actively maintained.

Can search engines index estuda.com?

Nothing on the homepage prevents indexing: no noindex is set in the robots meta tag or the X-Robots-Tag header.

The homepage carries 74 internal and 19 external links across 14 outside hosts.

Visible text is only 4.2% of the HTML, which indicates the page is assembled in the browser rather than served as content.

How is estuda.com delivered?

No Cache-Control header is sent for the HTML, so caching behaviour is left to browser defaults.

HTTP/3 is advertised via alt-svc, so modern browsers will upgrade to QUIC after the first visit.

The TLS certificate also covers 1 subdomain: www.estuda.com.

• www.estuda.com

Frequently asked questions

Does estuda.com set the usual HTTP security headers?

It sets 3 of 6. The ones not present are: HSTS, Content Security Policy, X-Frame-Options.

Does estuda.com allow AI crawlers?

robots.txt names no AI crawler specifically, so they fall under the wildcard rule, which does not disallow them.

What is estuda.com built with?

The homepage exposes these fingerprints: WordPress, jQuery, Google Tag Manager, Cloudflare. A site behind a CDN or rendered server-side may use more than it reveals.

Where does this data come from?

Every figure was measured by our own server on 5 October 2026: DNS lookups, one HTTPS request to the homepage, a TLS handshake and a request for robots.txt. No third-party SEO API is involved.

Is any of this traffic or authority data?

No. Traffic, authority and ranking figures cannot be measured by inspecting a domain, only modelled. Everything here is a direct observation.

I own estuda.com and want this page removed.

Ask through the contact page on this site, from an address at the domain, and the report will be taken down. It only ever shows what the domain already serves publicly.

Analysed 5 October 2026.
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