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SGSiteGraph

historycolorado.org

ERROR: The request could not be satisfied

Last scanned Aug 24, 2026, 1:22 PM · 1 view

85

Overall score

Great

Summary

This website is hosted on AWS. SEO is fair (60/100) and accessibility is good (85/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing meta description.

United States
Hosted on AWS

Top issues to fix

8 issues found · 2 high priority

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

60

SEO

6 issue(s) found

100

Performance

355 ms

100

Security

HTTPS & header checks

85

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Contact

Email, phone, and address published on this site's own pages.

Source: https://www.historycolorado.org:443/contact

Meta tags

Title
ERROR: The request could not be satisfied
Description
Canonical
Language
Charset
iso-8859-1
Viewport
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider
AWS
CDN provider
CloudFront
IP address
18.161.97.54
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 18.161.97.54
  • 18.161.97.56
  • 18.161.97.101
  • 18.161.97.95
AAAA
  • 2600:9000:23d0:b400:1a:afcf:d840:93a1
  • 2600:9000:23d0:f000:1a:afcf:d840:93a1
  • 2600:9000:23d0:4a00:1a:afcf:d840:93a1
  • 2600:9000:23d0:9400:1a:afcf:d840:93a1
  • 2600:9000:23d0:e200:1a:afcf:d840:93a1
  • 2600:9000:23d0:7800:1a:afcf:d840:93a1
  • 2600:9000:23d0:3600:1a:afcf:d840:93a1
  • 2600:9000:23d0:7600:1a:afcf:d840:93a1
MX—
TXT—
NS
  • ns-1160.awsdns-17.org
  • ns-531.awsdns-02.net
  • ns-1850.awsdns-39.co.uk
  • ns-449.awsdns-56.com
CAA—
CNAME
  • dl05rwtkya63l.cloudfront.net
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Amazon
Subject
www.historycolorado.org
Valid from
May 21, 2026
Valid to
Dec 4, 2026
Days until expiry
101
SAN domains
www.historycolorado.org, historycolorado.org

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyEnabled

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 1 · H3 0

Links

0 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

0 scripts · 0 stylesheets

JS / CSS size

0 B · 0 B

Page size

2.4 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • Missing canonical link
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • Missing <html lang> attribute
  • Missing viewport meta tag

Careers

View careers page

This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.

Scan details

Requested URL
https://historycolorado.org
Final URL
https://www.historycolorado.org:443/
HTTP status
202
HTTP version
HTTP/2
Response time
355 ms
HTML size
2.4 KB
Redirect chain
https://historycolorado.org → https://www.historycolorado.org:443/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does historycolorado.org use?
We did not detect any specific technologies for historycolorado.org in the latest scan.
Is historycolorado.org secure (HTTPS)?
Yes. historycolorado.org uses TLS 1.3 with a certificate issued by Amazon, valid until Dec 4, 2026.
Who hosts historycolorado.org?
historycolorado.org is hosted on AWS, behind CloudFront CDN.
What is historycolorado.org's SEO score?
historycolorado.org scored 60/100 for SEO in the latest analysis (fair).
What is historycolorado.org's overall website score?
historycolorado.org has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
Is historycolorado.org hiring?
historycolorado.org has a careers page; check it directly for current openings.