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Domain report

nfb.org

nfb.org ranks in the top 0.0067% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 34 distinct hosts observed under it.

Explore nfb.org in the Web Graph

Connectivity

#8,892harmonic-centrality rank
Top percentile
0.0067%
Hosts observed
34

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://nfb.org/ answered with HTTP 200.

DNS records

A
  • 172.66.40.213
  • 172.66.43.43
AAAA
  • 2606:4700:3108::ac42:2b2b
  • 2606:4700:3108::ac42:28d5
MX
  • 10 us-smtp-inbound-1.mimecast.com.
  • 10 us-smtp-inbound-2.mimecast.com.
  • 20 _dc-mx.056edf8b3b46.nfb.org.
NS
  • ajay.ns.cloudflare.com.
  • tess.ns.cloudflare.com.

Live preview

Screenshot of nfb.org

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

Since nfb.org 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
must-revalidate, no-cache, private
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
Not sent
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
nosniff
Referrer-Policy
Not sent
Permissions-Policy
interest-cohort=()

What each security header does

Redirect chain

  1. 1.http://nfb.org/HTTP 301

    → https://nfb.org/

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

Meta tags

Title
Homepage | National Federation of the Blind
Description
Not set
Canonical
https://nfb.org/
Robots
Not set
Generator
Drupal 9 (https://www.drupal.org); Commerce 2
Open Graph title
Not set
Open Graph description
Not set
Open Graph image
https://www.nfb.org/sites/www.nfb.org/files/facebook-og.jpg
Open Graph type
Not set
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
22
Disallow rules (other agents)
0

No Sitemap declared in robots.txt.

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/8.0.12

  • Drupalcms

    <meta name="generator"> = "Drupal 9 (https://www.drupal.org); Commerce 2"

  • 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.