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Domain report

hao2learn.com

hao2learn.com ranks in the top 0.25% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.

Explore hao2learn.com in the Web Graph

Connectivity

#339,051harmonic-centrality rank
Top percentile
0.25%
Hosts observed
2

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://hao2learn.com/ answered with HTTP 200.

DNS records

A
  • 3.170.131.74
  • 3.170.131.16
  • 3.170.131.35
  • 3.170.131.109
AAAA
  • 2600:9000:2882:200:10:f221:580:93a1
  • 2600:9000:2882:a00:10:f221:580:93a1
  • 2600:9000:2882:7000:10:f221:580:93a1
  • 2600:9000:2882:2000:10:f221:580:93a1
  • 2600:9000:2882:fe00:10:f221:580:93a1
  • 2600:9000:2882:da00:10:f221:580:93a1
  • 2600:9000:2882:6200:10:f221:580:93a1
  • 2600:9000:2882:7a00:10:f221:580:93a1
MX
  • 10 mx00.ionos.de.
  • 10 mx01.ionos.de.
NS
  • ns-1191.awsdns-20.org.
  • ns-1539.awsdns-00.co.uk.
  • ns-275.awsdns-34.com.
  • ns-628.awsdns-14.net.

Live preview

This is a live, sandboxed embed of hao2learn.com — not a copy. What it shows can change any time the site itself does.

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
private, no-cache, no-store, max-age=0, must-revalidate
Content-Encoding
Not sent

Security

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

What each security header does

Redirect chain

  1. 1.http://hao2learn.com/HTTP 301

    → https://hao2learn.com/

  2. 2.https://hao2learn.com/HTTP 200

Meta tags

Title
hao2learn – Free Chinese Teaching Platform & Learning App
Description
Teachers create interactive Chinese lessons and share them with one link. Students learn Mandarin with HSK stories, vocabulary decks and a smart dictionary. Free.
Canonical
https://hao2learn.com
Robots
index, follow
Generator
Not set
Open Graph title
hao2learn – Free Chinese Teaching Platform & Learning App
Open Graph description
Teachers create interactive Chinese lessons and share them with one link. Students learn Mandarin with HSK stories, vocabulary decks and a smart dictionary. Free.
Open Graph image
https://hao2learn.com/opengraph-image.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
hao2learn – Free Chinese Teaching Platform & Learning App
Twitter image
https://hao2learn.com/opengraph-image.png

robots.txt

Disallow rules (User-agent: *)
5
Disallow rules (other agents)
0

Sitemap declared:

  • https://hao2learn.com/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Next.jsframework

    X-Powered-By: Next.js

  • Google Analyticsanalytics

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

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