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Domain report

isel.pt

isel.pt ranks in the top 0.036% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 89 distinct hosts observed under it.

Explore isel.pt in the Web Graph

Connectivity

#48,611harmonic-centrality rank
Top percentile
0.036%
Hosts observed
89

From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means

HTTPS reachability

200HTTP status

https://isel.pt/ answered with HTTP 200.

DNS records

A
  • 192.68.221.35
AAAA
No records found.
MX
  • 10 isel-pt.mail.protection.outlook.com.
NS
  • ns1.net.ipl.pt.
  • xms008.isel.priv.
  • xms004.isel.priv.
  • ad4.isel.priv.
  • ns2.net.ipl.pt.
  • xms001.isel.priv.
  • ad2.isel.priv.

Live preview

Screenshot of isel.pt

This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.

Since isel.pt can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.

Domain registration (WHOIS / RDAP)

RDAP lookup failed (HTTP 429).

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 429).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=UTF-8
Cache-Control
must-revalidate, no-cache, private
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
Not sent
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
nosniff
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://isel.pt/HTTP 301

    → https://isel.pt/

  2. 2.https://isel.pt/HTTP 200

Meta tags

Title
Home Page | Instituto Superior de Engenharia de Lisboa
Description
Not set
Canonical
https://isel.pt/
Robots
Not set
Generator
Drupal 10 (https://www.drupal.org)
Open Graph title
Not set
Open Graph description
O Instituto Superior de Engenharia de Lisboa é uma instituição de ensino superior na área da engenharia e da tecnologia localizada em Lisboa com um passado de 170 anos com atividades nos domínios do ensino, da formação profissional, da investigação e da prestação de serviços à comunidade.
Open Graph image
https://isel.pt/themes/gavias_unix/images/01_ISEL-Logotipo-RGB_Horizontal-Acronimo-900.png
Open Graph type
Not set
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
34
Disallow rules (other agents)
0

No Sitemap declared in robots.txt.

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

  • Cloudflarecdn

    Server: cloudflare

  • Drupalcms

    <meta name="generator"> = "Drupal 10 (https://www.drupal.org)"

  • Google Analyticsanalytics

    Found "googletagmanager.com/gtag/js" in the page's HTML

Related domains

Similar connectivity

Domains ranked just above and below it in the same snapshot.