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SGSiteGraph

sismologia.cl

Centro Sismológico Nacional

Last scanned Jul 26, 2026, 5:17 AM · 1 view

90

Overall score

Excellent

Summary

Centro Sismológico Nacional. This website is hosted on AWS. SEO is fair (65/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing canonical link.

Centro Sismológico Nacional

United States
Hosted on AWS

Top issues to fix

6 issues found

  • Missing canonical link

    SEO

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

  • Multiple H1 headings found

    SEO

    Keep a single H1 per page and demote the others to H2/H3.

  • 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.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

65

SEO

6 issue(s) found

100

Performance

598 ms

100

Security

HTTPS & header checks

100

Accessibility

0 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.

Organization

Company details published in this site's own structured data.

Centro Sismológico Nacional

FacebookX (Twitter)YouTubeInstagram

Meta tags

Title
Centro Sismológico Nacional
Description
Centro Sismológico Nacional
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1, maximum-scale=1
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
18.239.111.38
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 18.239.111.38
  • 18.239.111.66
  • 18.239.111.127
  • 18.239.111.95
AAAA—
MX—
TXT—
NS
  • ns-516.awsdns-00.net
  • ns-1994.awsdns-57.co.uk
  • ns-291.awsdns-36.com
  • ns-1232.awsdns-26.org
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Amazon
Subject
www.sismologia.cl
Valid from
Sep 5, 2025
Valid to
Oct 4, 2026
Days until expiry
70
SAN domains
www.sismologia.cl, sismologia.cl

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 3 · H2 0 · H3 0

Links

21 internal · 17 external · 0 broken

Images

4 total · 0 missing alt

Scripts / Styles

4 scripts · 2 stylesheets

JS / CSS size

10.1 KB · 22.7 KB

Page size

9.7 KB

Robots.txt & Sitemap

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

SEO issues

  • Missing canonical link
  • Multiple H1 headings found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://sismologia.cl
Final URL
https://sismologia.cl
HTTP status
200
HTTP version
HTTP/2
Response time
598 ms
HTML size
9.7 KB
Redirect chain
https://sismologia.cl

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Frequently asked questions

What technology does sismologia.cl use?
We did not detect any specific technologies for sismologia.cl in the latest scan.
Is sismologia.cl secure (HTTPS)?
Yes. sismologia.cl uses TLS 1.3 with a certificate issued by Amazon, valid until Oct 4, 2026.
Who hosts sismologia.cl?
sismologia.cl is hosted on AWS, behind CloudFront CDN.
What is sismologia.cl's SEO score?
sismologia.cl scored 65/100 for SEO in the latest analysis (fair).
What is sismologia.cl's overall website score?
sismologia.cl has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.