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Domain report

flu.gov

flu.gov ranks in the top 0.35% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 5 distinct hosts observed under it.

Explore flu.gov in the Web Graph

Connectivity

#465,185harmonic-centrality rank
Top percentile
0.35%
Hosts observed
5

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://flu.gov/ answered with HTTP 200.

DNS records

A
  • 23.64.114.31
  • 23.64.114.35
AAAA
  • 2600:1407:3c00:5::17d5:350a
  • 2600:1407:3c00:5::17d5:352a
MX
No records found.
NS
  • a1-43.akam.net.
  • a2-64.akam.net.
  • a5-66.akam.net.
  • a8-67.akam.net.
  • a9-64.akam.net.
  • a28-65.akam.net.

Live preview

This is a live, sandboxed embed of flu.gov — 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
Cache-Control
Not sent
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=31536000 ; includeSubDomains ; preload
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://flu.gov/HTTP 301

    → https://flu.gov/

  2. 2.https://flu.gov/HTTP 301

    → https://www.cdc.gov/flu/

  3. 3.https://www.cdc.gov/flu/HTTP 200

Meta tags

Title
Influenza (Flu) | CDC
Description
Learn about flu, including symptoms, prevention methods, and treatment options.
Canonical
https://www.cdc.gov/flu/index.html
Robots
index, archive
Generator
Not set
Open Graph title
Influenza (Flu)
Open Graph description
Learn about flu, including symptoms, prevention methods, and treatment options.
Open Graph image
https://www.cdc.gov/flu/images/virus/Flu19_trans_RNPs-small.png?_=39900
Open Graph type
article
Twitter card
summary
Twitter title
Influenza (Flu)
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
0
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

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