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Domain report

dfer.org

dfer.org ranks in the top 0.33% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.

Explore dfer.org in the Web Graph

Connectivity

#442,272harmonic-centrality rank
Top percentile
0.33%
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://dfer.org/ answered with HTTP 200.

DNS records

A
  • 35.197.62.235
AAAA
No records found.
MX
  • 1 aspmx.l.google.com.
  • 5 alt1.aspmx.l.google.com.
  • 5 alt2.aspmx.l.google.com.
  • 10 alt3.aspmx.l.google.com.
  • 10 alt4.aspmx.l.google.com.
NS
  • ns1.dnsimple.com.
  • ns2.dnsimple.com.
  • ns3.dnsimple.com.
  • ns4.dnsimple.com.

Live preview

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

Domain registration (WHOIS / RDAP)

Registrar
Rebel Ltd
Registered
2006-05-08
Expires
2027-05-08
Last changed
2026-08-12

Nameservers: ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com, ns4.dnsimple.com

Status: client transfer prohibited, client update 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=600, 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://dfer.org/HTTP 301

    → https://dfer.org/

  2. 2.https://dfer.org/HTTP 200

Meta tags

Title
Home - DFER
Description
Not set
Canonical
https://dfer.org/
Robots
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Generator
Site Kit by Google 1.177.0
Open Graph title
Home - DFER
Open Graph description
Stay Informed Get the latest news from DFER sent Directly to your inbox. Support Us Support DFER by donating to Democrats for Education Reform. See Our Impact Learn how we work to elect Democrats for Education Reform. In the Spotlight Latest News & Media Featured DFERs
Open Graph image
https://dfer.org/wp-content/uploads/2026/04/DFER_SocialPreview.jpg
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
2
Disallow rules (other agents)
0

Sitemap declared:

  • https://dfer.org/sitemap_index.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • WordPresscms

    Found "wp-content/" in the page's HTML

  • Google Analyticsanalytics

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

Related domains

Similar connectivity

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