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Domain report

sternmath.com

sternmath.com ranks in the top 0.45% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 3 distinct hosts observed under it.

Explore sternmath.com in the Web Graph

Connectivity

#603,534harmonic-centrality rank
Top percentile
0.45%
Hosts observed
3

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

DNS records

A
  • 23.227.38.65
AAAA
No records found.
MX
  • 15 6fozznsoflbwf4rdgsjs4kutrt5goywrwxnib4hlc4tujuphjp5a.mx-verification.google.com.
  • 1 smtp.google.com.
NS
  • dns106.register.com.
  • dns105.register.com.

Live preview

Screenshot of sternmath.com

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

Since sternmath.com 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
private, max-age=0, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
block-all-mixed-content; frame-ancestors 'none'; upgrade-insecure-requests;
Strict-Transport-Security
max-age=7889238
X-Frame-Options
DENY
X-Content-Type-Options
nosniff
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

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

    → https://sternmath.com/

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

Meta tags

Title
Stern Math
Description
A Multisensory, Manipulative-Based, Conceptual Approach to Teaching Mathematics
Canonical
https://sternmath.com/
Robots
Not set
Generator
Not set
Open Graph title
Stern Math
Open Graph description
A Multisensory, Manipulative-Based, Conceptual Approach to Teaching Mathematics
Open Graph image
http://sternmath.com/cdn/shop/files/5stair_logo2021.png?height=628&pad_color=fff&v=1662040424&width=1200
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Stern Math
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
40
Disallow rules (other agents)
10

Sitemap declared:

  • https://sternmath.com/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Shopifyecommerce

    Found "cdn.shopify.com" in the page's HTML

Related domains

Similar connectivity

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