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Domain report

testdouble.com

testdouble.com ranks in the top 0.51% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 6 distinct hosts observed under it.

Explore testdouble.com in the Web Graph

Connectivity

#674,144harmonic-centrality rank
Top percentile
0.51%
Hosts observed
6

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

DNS records

A
  • 198.202.211.1
AAAA
No records found.
MX
  • 10 aspmx.l.google.com.
  • 20 alt1.aspmx.l.google.com.
  • 20 alt2.aspmx.l.google.com.
  • 30 aspmx2.googlemail.com.
  • 30 aspmx3.googlemail.com.
  • 30 aspmx4.googlemail.com.
  • 30 aspmx5.googlemail.com.
NS
  • ns1.dnsimple-edge.com.
  • ns2.dnsimple-edge.net.
  • ns3.dnsimple-edge.io.
  • ns4.dnsimple-edge.org.

Live preview

Screenshot of testdouble.com

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

Since testdouble.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
Not sent
Content-Encoding
Not sent

Security

Content-Security-Policy
frame-ancestors 'self'
Strict-Transport-Security
max-age=31536000; includeSubDomains; preload
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

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

    → https://testdouble.com/

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

Meta tags

Title
Test Double custom software development consultancy
Description
Test Double is a leading software development consultancy offering DevOps, Rails upgrades, and faster software delivery. Founded by Justin Searls and Todd Kaufman.
Canonical
https://testdouble.com
Robots
Not set
Generator
Not set
Open Graph title
Test Double custom software development consultancy
Open Graph description
Test Double is a leading software development consultancy offering DevOps, Rails upgrades, and faster software delivery. Founded by Justin Searls and Todd Kaufman.
Open Graph image
https://cdn.prod.website-files.com/6647a84a9616b0776fb9040e/683e21c2cf15e2c8a18dc658_test-double-home.jpg
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Test Double custom software development consultancy
Twitter image
https://cdn.prod.website-files.com/6647a84a9616b0776fb9040e/668c2536fe75b0f5ec63027a_og-image.jpg

robots.txt

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

Sitemap declared:

  • https://testdouble.com/sitemap.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.