What technology does cis.es use?

cis.es is built with Bootstrap, jQuery, Google Analytics, Apache.

Is cis.es secure (HTTPS)?

Yes. cis.es uses TLS 1.3 with a certificate issued by FNMT-RCM, valid until Nov 13, 2026.

Hosting provider information for cis.es is not available yet.

What is cis.es's SEO score?

cis.es scored 90/100 for SEO in the latest analysis (excellent).

What is cis.es's overall website score?

cis.es has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.

Has cis.es's score changed over time?

cis.es's overall score has stayed steady at 92/100 since Jul 27, 2026.

cis.es

Centro de Investigaciones Sociológicas (CIS) – Estudios y barómetros de opinión

Last scanned Aug 4, 2026, 5:00 AM · 11 views

Overall score

Excellent

Summary

El Centro de Investigaciones Sociológicas es un organismo público español, elaboran encuestas periódicas, por propia iniciativa del Centro o por petición de otros organismos públicos. This website uses Apache. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance good (80/100). Top issue: Title longer than 60 characters.

El Centro de Investigaciones Sociológicas es un organismo público español, elaboran encuestas periódicas, por propia iniciativa del Centro o por petición de otros organismos públicos

Top issues to fix

4 issues found

3 cookies without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
2 broken links on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

2 issue(s) found

Performance

615 ms

100

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

0 overall since Jul 27, 2026

Overall: 92
SEO: 90
Security: 100
Performance: 80
Accessibility: 100

Organization

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

El Centro de Investigaciones Sociológicas es un organismo público español, elaboran encuestas periódicas, por propia iniciativa del Centro o por petición de otros organismos públicos

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Meta tags

Title: Centro de Investigaciones Sociológicas (CIS) – Estudios y barómetros de opinión
Description: El Centro de Investigaciones Sociológicas es un organismo público español, elaboran encuestas periódicas, por propia iniciativa del Centro o por petición de otros organismos públicos
Canonical: https://www.cis.es/es/
Language: en-US
Charset: UTF-8
Viewport: initial-scale=1.0, width=device-width
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Bootstrap jQuery Google Analytics Apache

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: 212.128.109.135
ASN: —

DNS records

Type	Value
A	212.128.109.135
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: FNMT-RCM
Subject: *.cis.es
Valid from: Apr 28, 2026
Valid to: Nov 13, 2026
Days until expiry: 101
SAN domains: *.cis.es, cis.es

Security headers

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

Compression: gzip · 3 cookie(s) observed

Content & assets

Headings

H1 1 · H2 11 · H3 0

Links

66 internal · 7 external · 2 broken

Images

29 total · 0 missing alt

Scripts / Styles

61 scripts · 25 stylesheets

JS / CSS size

438 KB · 2.6 MB

Page size

350 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 35
sitemap.xml: Found
URLs in sitemap: -1

SEO issues

Title longer than 60 characters
Meta description longer than 160 characters

Scan details

Requested URL: https://cis.es
Final URL: https://www.cis.es/en/
HTTP status: 200
HTTP version: HTTP/2
Response time: 608 ms
HTML size: 350 KB
Redirect chain: https://cis.es → https://www.cis.es/ → https://www.cis.es/en/

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Frequently asked questions

What technology does cis.es use?: cis.es is built with Bootstrap, jQuery, Google Analytics, Apache.
Is cis.es secure (HTTPS)?: Yes. cis.es uses TLS 1.3 with a certificate issued by FNMT-RCM, valid until Nov 13, 2026.
Who hosts cis.es?: Hosting provider information for cis.es is not available yet.
What is cis.es's SEO score?: cis.es scored 90/100 for SEO in the latest analysis (excellent).
What is cis.es's overall website score?: cis.es has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
Has cis.es's score changed over time?: cis.es's overall score has stayed steady at 92/100 since Jul 27, 2026.