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Domain report

calpine.com

calpine.com ranks in the top 0.40% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 3 distinct hosts observed under it.

Explore calpine.com in the Web Graph

Connectivity

#538,385harmonic-centrality rank
Top percentile
0.40%
Hosts observed
3

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

DNS records

A
  • 23.185.0.1
AAAA
  • 2620:12a:8000::1
MX
  • 10 calpine-com.mail.protection.outlook.com.
NS
  • ns1-07.azure-dns.com.
  • ns2-07.azure-dns.net.
  • ns3-07.azure-dns.org.
  • ns4-07.azure-dns.info.
AS
Server in network FASTLY, AS54113 · United States23.185.0.0/24, which holds 23.185.0.1

Live preview

Screenshot of calpine.com

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

Since calpine.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)

Registrar
Network Solutions, LLC
Registered
1995-08-29
Expires
2029-08-28
Last changed
2024-06-29

Nameservers: NS1-07.AZURE-DNS.COM, NS2-07.AZURE-DNS.NET, NS3-07.AZURE-DNS.ORG, NS4-07.AZURE-DNS.INFO

Status: client transfer prohibited

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
public, max-age=600
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=300
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
nosniff
Referrer-Policy
no-referrer-when-downgrade
Permissions-Policy
Not sent

What each security header does

Redirect chain

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

    → https://www.calpine.com/

  2. 2.https://www.calpine.com/HTTP 200

Meta tags

Title
America’s Premier Competitive Power Company - Calpine
Description
Calpine Corporation is America’s premier privately held competitive power company committed to fulfilling America’s power needs today – and tomorrow.
Canonical
https://www.calpine.com/
Robots
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Generator
WordPress 7.0.2
Open Graph title
America’s Premier Competitive Power Company
Open Graph description
Calpine Corporation is America’s premier privately held competitive power company committed to fulfilling America’s power needs today – and tomorrow.
Open Graph image
https://www.calpine.com/wp-content/uploads/2023/12/Calpine-The-Geysers-Eagle-Rock-U-11-scaled.jpg
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Not set
Twitter image
Not set

robots.txt

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

Sitemap declared:

  • https://www.calpine.com/sitemap_index.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • WordPresscms

    <meta name="generator"> = "WordPress 7.0.2"

  • Google Tag Manageranalytics

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

Related domains

Similar connectivity

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