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Domain report

openheaders.com

openheaders.com ranks in the top 0.26% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 1 distinct host observed under it.

Explore openheaders.com in the Web Graph

Connectivity

#347,089harmonic-centrality rank
Top percentile
0.26%
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://openheaders.com/ answered with HTTP 200.

DNS records

A
  • 172.67.171.215
  • 104.21.39.236
AAAA
  • 2606:4700:3030::6815:27ec
  • 2606:4700:3037::ac43:abd7
MX
  • 10 eu1-smtp.messagingengine.com.
  • 20 eu2-smtp.messagingengine.com.
NS
  • sullivan.ns.cloudflare.com.
  • tegan.ns.cloudflare.com.

Live preview

This is a live, sandboxed embed of openheaders.com — 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
public, max-age=0, 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://openheaders.com/HTTP 200

Meta tags

Title
OpenHeaders — your web devtoolkit inside a browser extension
Description
HTTP rules, mocks, and a full API client — front-end and back-end in one install. Works offline, syncs across surfaces. No account, no cloud, no personal data.
Canonical
https://openheaders.com
Robots
Not set
Generator
Not set
Open Graph title
OpenHeaders — your web devtoolkit inside a browser extension
Open Graph description
HTTP rules, mocks, and a full API client — front-end and back-end in one install. Works offline, syncs across surfaces. No account, no cloud, no personal data.
Open Graph image
https://openheaders.com/_astro/og.D8Csvwr7.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
OpenHeaders — your web devtoolkit inside a browser extension
Twitter image
https://openheaders.com/_astro/og.D8Csvwr7.png

robots.txt

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

Sitemap declared:

  • https://openheaders.com/sitemap-index.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

Related domains

Similar connectivity

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