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Domain report

clspectrum.com

clspectrum.com ranks in the top 0.34% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 4 distinct hosts observed under it.

Explore clspectrum.com in the Web Graph

Connectivity

#457,212harmonic-centrality rank
Top percentile
0.34%
Hosts observed
4

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

DNS records

A
  • 104.17.17.9
  • 104.17.18.9
AAAA
No records found.
MX
No records found.
NS
  • ns71.domaincontrol.com.
  • ns72.domaincontrol.com.

Live preview

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

Domain registration (WHOIS / RDAP)

Registrar
GoDaddy.com, LLC
Registered
1997-03-08
Expires
2027-03-09
Last changed
2026-03-10

Nameservers: NS71.DOMAINCONTROL.COM, NS72.DOMAINCONTROL.COM

Status: client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 502).

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
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://clspectrum.com/HTTP 301

    → https://clspectrum.com/

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

Meta tags

Title
Contact Lens Spectrum
Description
Conexiant Vision: Delivering trusted clinical content, deep audience engagement, and educational resources for eye care professionals. Discover more through our magazines, newsletters, and events.
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
Contact Lens Spectrum
Open Graph description
Conexiant Vision: Delivering trusted clinical content, deep audience engagement, and educational resources for eye care professionals. Discover more through our magazines, newsletters, and events.
Open Graph image
https://clspectrum.com/media/e42n2kr3/generic-thumb-eye.jpg
Open Graph type
homepage
Twitter card
summary
Twitter title
Contact Lens Spectrum
Twitter image
https://clspectrum.com/media/e42n2kr3/generic-thumb-eye.jpg

robots.txt

clspectrum.com has no robots.txt.

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • ASP.NETframework

    X-Powered-By: ASP.NET

  • Google Analyticsanalytics

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

  • Cloudflare Bot Managementcdn

    Cookie set: __cf_bm

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