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Domain report

openedu.ru

openedu.ru ranks in the top 0.33% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 12 distinct hosts observed under it.

Explore openedu.ru in the Web Graph

Connectivity

#434,921harmonic-centrality rank
Top percentile
0.33%
Hosts observed
12

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://openedu.ru/ answered with HTTP 200.

DNS records

A
  • 178.248.235.109
AAAA
No records found.
MX
  • 10 mx.yandex.net.
NS
  • a.ns.selectel.ru.
  • b.ns.selectel.ru.
  • c.ns.selectel.ru.
  • d.ns.selectel.ru.
AS
Server in network HLL-AS, AS51115 · Russia178.248.235.0/24, which holds 178.248.235.109

Live preview

Screenshot of openedu.ru

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

Since openedu.ru 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)

No RDAP (WHOIS) data is available for openedu.ru.

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed: The operation was aborted due to timeout

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=utf-8
Cache-Control
private, no-cache, no-store, max-age=0, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
frame-ancestors 'self' https://*.openedu.ru https://*.examus.openedu.ru https://*.examus.net https://*.student.examus.net https://*.hse.ru/
Strict-Transport-Security
max-age=63072000; includeSubDomains
X-Frame-Options
ALLOW
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://openedu.ru/HTTP 302

    → https://openedu.ru/

  2. 2.https://openedu.ru/HTTP 200

Meta tags

Title
Главная страница - Открытое образование
Description
Бесплатные онлайн-курсы ведущих вузов России
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
Открытое образование
Open Graph description
Бесплатные онлайн-курсы ведущих вузов России
Open Graph image
Not set
Open Graph type
Not set
Twitter card
summary
Twitter title
Открытое образование
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
1
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

  • Next.jsframework

    Found "_next/static/" in the page's HTML

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