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Domain report

physicscatalyst.com

physicscatalyst.com ranks in the top 0.50% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 1 distinct host observed under it.

Explore physicscatalyst.com in the Web Graph

Connectivity

#672,788harmonic-centrality rank
Top percentile
0.50%
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://physicscatalyst.com/ answered with HTTP 200.

DNS records

A
  • 172.67.188.85
  • 104.21.48.230
AAAA
  • 2606:4700:3037::ac43:bc55
  • 2606:4700:3034::6815:30e6
MX
No records found.
NS
  • isla.ns.cloudflare.com.
  • roan.ns.cloudflare.com.

Live preview

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

Domain registration (WHOIS / RDAP)

Registrar
PDR Ltd. d/b/a PublicDomainRegistry.com
Registered
2008-08-27
Expires
2028-08-27
Last changed
2026-05-21

Nameservers: ISLA.NS.CLOUDFLARE.COM, ROAN.NS.CLOUDFLARE.COM

Status: client transfer prohibited

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
max-age=2592000
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://physicscatalyst.com/HTTP 301

    → https://physicscatalyst.com/

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

Meta tags

Title
The Physicscatalyst(Free Online Science,maths ,Biology ,Chemistry and physics resources)
Description
We offer free JEE Advanced/Main, NEET, and CBSE test papers, sample papers, notes, and study materials for Classes 6 to 12, covering subjects such as Maths, Science, Physics, Chemistry, Biology, and Biotechnology.
Canonical
https://physicscatalyst.com
Robots
Not set
Generator
Not set
Open Graph title
Not set
Open Graph description
Not set
Open Graph image
Not set
Open Graph type
Not set
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
3
Disallow rules (other agents)
0

Sitemap declared:

  • https://physicscatalyst.com/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • PHPother

    X-Powered-By: PHP/7.4.33

  • Google Analyticsanalytics

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

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Similar connectivity

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