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Domain report

dualsub.dev

dualsub.dev ranks in the top 0.27% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 1 distinct host observed under it.

Explore dualsub.dev in the Web Graph

Connectivity

#360,439harmonic-centrality rank
Top percentile
0.27%
Hosts observed
1

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://dualsub.dev/ answered with HTTP 200.

DNS records

A
  • 185.158.133.1
AAAA
No records found.
MX
No records found.
NS
  • ns1hwy.name.com.
  • ns2fln.name.com.
  • ns3fqs.name.com.
  • ns4jnz.name.com.

Live preview

This is a live, sandboxed embed of dualsub.dev — 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
no-cache, must-revalidate, max-age=0
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=31536000; includeSubDomains
X-Frame-Options
Not sent
X-Content-Type-Options
nosniff
Referrer-Policy
strict-origin-when-cross-origin
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://dualsub.dev/HTTP 301

    → https://dualsub.dev/

  2. 2.https://dualsub.dev/HTTP 200

Meta tags

Title
Dual Sub, Learn Languages While Watching What You Love
Description
Chrome extension for Netflix, YouTube, Prime Video and Disney+ with dual subtitles, instant dictionaries, furigana, pinyin, and Anki vocabulary export.
Canonical
/
Robots
Not set
Generator
Not set
Open Graph title
Dual Sub, Learn Languages While Watching
Open Graph description
Watch your favorite shows with two subtitle languages, click any word for an instant dictionary, and save vocabulary to Anki.
Open Graph image
https://pub-bb2e103a32db4e198524a2e9ed8f35b4.r2.dev/f2eb8611-08fe-4f88-a605-f0c9712a279b/id-preview-8501ab40--97fd7e38-a26d-4a42-bca1-5e464547a8dc.lovable.app-1780880555743.png
Open Graph type
website
Twitter card
summary
Twitter title
Dual Sub, Learn Languages with Dual Subtitles
Twitter image
https://pub-bb2e103a32db4e198524a2e9ed8f35b4.r2.dev/f2eb8611-08fe-4f88-a605-f0c9712a279b/id-preview-8501ab40--97fd7e38-a26d-4a42-bca1-5e464547a8dc.lovable.app-1780880555743.png

robots.txt

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

Sitemap declared:

  • https://dualsub.dev/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Cloudflare Bot Managementcdn

    Cookie set: __cf_bm

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