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https://uned.es

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
76
GRADE
C
FIX
1
REVIEW
4
PASS
3
INFO
1
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
3 PASS 4 REVIEW 1 FIX
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

B
Redirect Chain
2 redirect(s), 233 ms total
REVIEW
2 redirect(s), 233 ms total
Warning::
2 redirects before reaching final URL
Each redirect adds latency. Try to minimize the chain to 1 hop.
Info::
WWW normalization redirect

https://uned.es

20 ms · HTTP/1.1

301

https://www.uned.es

181 ms · HTTP/1.1

301

https://www.uned.es/universidad/inicio.h...

32 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://uned.es30120 msHTTP/1.1
2https://www.uned.es301181 msHTTP/1.1
3https://www.uned.es/universidad/inicio.h...20032 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

C
Crawlability
Action
robots.txt present, sitemap with 0 URLs
REVIEW
robots.txt present, sitemap with 0 URLs
Info::
robots.txt is present
Got: 10240 bytes
Info::
sitemap.xml is present
Warning::
sitemap.xml contains invalid XML
Search engines may not be able to parse the sitemap. Fix XML validation errors.
Warning::
sitemap.xml is empty — no URLs found
An empty sitemap provides no value. Add <url> entries for your pages.
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Search engines may not be able to parse the sitemap. Fix XML validation errors.

Why this matters

An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.

Learn more ▾

Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.

Source: sitemaps.org / Google Search Central

An empty sitemap provides no value. Add <url> entries for your pages.

Why this matters

An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.

Learn more ▾

Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.

Source: Google Search Central / sitemaps.org

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 10240 B Sitemaps referenced 0 User-agents Blocking No — crawling allowed


<!DOCTYPE html>
<html xml:lang="es" lang="es">


    <head>


    
    
	
    
    
    <title>UNED | Universidad Nacional de Educación a Distancia</title>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="Universidad Nacional de Educación a Distancia (UNED). pública, Grados, posgrados, másteres, investigación, formación permanente">
    <meta name="keywords" content="UNED, grados, posgrados, investigación, formación permanente, másteres, universidad publica, estudios,modalidad de educación a distancia, España, sin notas de corte, semipresencial">
    
		<meta itemprop="name" content="UNED | Universidad Nacional de Educación a Distancia"/>
		<meta itemprop="description" content="Universidad Nacional de Educación a Distancia (UNED). pública, Grados, posgrados, másteres, investigación, formación permanente"/>
		
		<meta name="twitter:site" content="@UNED"/>
		<meta name="twitter:title" content="UNED | Universidad Nacional de Educación a Distancia"/>
		<meta name="twitter:description" content="Universidad Nacional de Educación a Distancia (UNED). pública, Grados, posgrados, másteres, investigación, formación permanente"/>
		<meta name="twitter:creator" content="Universidad Nacional de Educacion a Distancia"/>
		<meta name="twitter:image" content="/universidad/.resources/site-uned/webresources/img/logo_uned.gif"/>
		
		<meta property="og:title" content="UNED | Universidad Nacional de Educación a Distancia"/>
		<meta property="og:type" content="website"/>
		<meta property="og:url" content="https://www.uned.es/universidad/inicio/"/>
		<meta property="og:image" content="/universidad/.resources/site-uned/webresources/img/logo_uned.gif"/>
		<meta property="og:description" content="Universidad Nacional de Educación a Distancia (UNED). pública, Grados, posgrados, másteres, investigación, formación permanente"/>
		<meta property="og:site_name" content="Universidad Nacional de Educacion a Distancia"/>
		

    <script src="//cdn1.readspeaker.com/script/10872/webReader/webReader.js?pids=wr&dload=DocReader.AutoAdd" type="text/javascript" id="rs_req_Init"></script>
    <script>
        window.rsConf = {general: {usePost: true}};
        window.rsDocReaderConf = {lang: 'es_es', img_alt: 'Abrir este documento utilizando el ReadSpeaker docReader'};
    </script>

    <link rel="icon" href="/universidad/.resources/site-uned/webresources/img/favicon.png" sizes="32x32" type="image/png"/>
    
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/reset~2026-03-18-08-22-04-367~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/bootstrap.min~2026-03-18-08-22-04-168~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/contenidos~2026-03-18-08-22-04-171~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/components~2026-03-18-08-22-04-268~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/pages~2026-03-18-08-22-04-335~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/portaltransparencia~2026-03-18-08-22-04-366~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/unedmagnolia~2026-03-18-08-22-04-368~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/fontawesome/css/all.min~2026-03-18-08-22-04-197~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/style2020~2026-03-18-08-22-04-196~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/components2020~2026-03-18-08-22-04-334~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/template~2026-03-18-08-22-04-367~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/color~2026-03-18-08-22-04-169~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-facultades/webresources/css/facultadportada~2026-03-18-08-22-02-998~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-facultades/webresources/css/components~2026-03-18-08-22-02-786~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/menuNew2023~2026-03-18-08-22-04-196~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/guiasEstudios~2026-03-18-08-22-04-333~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/site-uned/webresources/css/listadoNoticias~2026-03-18-08-22-04-335~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/common-module/webresources/css/ckeditorCustomStyles~2026-03-18-08-22-00-746~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/common-module/webresources/css/componentesCentosAsociados~2026-03-18-08-22-00-914~cache.css" media="all"/>
        <link rel="stylesheet" href="/universidad/inicio/.resources/common-module/webresources/css/tutorias~2026-03-18-08-22-00-919~cache.css" media="all"/>
    
        <script src="/universidad/inicio/.resources/site-uned/webresources/js/jquery.min~2026-03-18-08-22-06-822~cache.js"></script>
        <script src="/universidad/inicio/.resources/site-uned/webresources/js/bootstrap.min~2026-03-18-08-22-06-804~cache.js"></script>
        <script src="/universidad/inicio/.resources/site-uned/webresources/js/auth~2026-03-18-08-22-06-740~cache.js"></script>
        <script src="/universidad/inicio/.resources/site-uned/webresources/js/renderBreadcrumbs~2026-03-18-08-22-06-812~cache.js"></script>
        <script src="/universidad/inicio/.resources/site-uned/webresources/js/app~2026-03-18-08-22-06-805~cache.js"></script>
        <script src="/universidad/inicio/.resources/site-uned/webresources/js/plegable~2026-03-18-08-22-06-827~cache.js"></script>
        <script src="/universidad/inicio/.resources/site-uned/webresources/js/respimage.min~2026-03-18-08-22-06-830~cache.js"></script>
        <script src="/universidad/inicio/.resources/site-uned/webresources/js/lazysizes.min~2026-03-18-08-22-06-740~cache.js"></script>
        <script src="/universidad/inicio/.resources/site-facultades/webresources/js/scaleVideo~2026-03-18-08-22-03-298~cache.js"></script>
        <script src="/universidad/inicio/.resources/site-uned/webresources/js/menuNew2023~2026-03-18-08-22-06-769~cache.js"></script>



	
				<link rel="canonical" href="https://www.uned.es/universidad/inicio/" />
	 
					
    				<link rel="alternate" hreflang="en" href="https://www.uned.es/universidad/inicio/en/"/>
    				<link rel="alternate" hreflang="es" href="https://www.uned.es/universidad/inicio/"/>
	
	
	<link rel="alternate" hreflang="x-default" href="https://www.uned.es/universidad/inicio/"/>
	
	<script type="application/ld+json">
    {
      "@context":"https://schema.org",
      "@type":"Organization",
      "url":"https://www.uned.es",
      "sameAs":["https://www.facebook.com/UNED.ES","https://x.com/#!/uned","https://www.youtube.com/user/uned","https://www.linkedin.com/company/uned","https://www.instagram.com/uneduniv/","https://open.spotify.com/user/78tc4zjott52anemdliooqwc2","https://www.ivoox.com/escuchar-uned_nq_842_1.html"],
      "contactPoint":{ "@type":"ContactPoint","telephone":"+34 91 398 6000","contactType":"Customer Service","areaServed":"ES","email":"infouned@adm.uned.es"},
      "logo":"https://www.uned.es/universidad/dam/jcr:f1d31a72-ac37-4067-afce-ba126d6568c4",
      "image":"https://www.uned.es/universidad/dam/jcr:f1d31a72-ac37-4067-afce-ba126d6568c4",
      "name":"Universidad Nacional de Educación a Distancia (UNED)",
      "description":"Universidad Nacional de Educación a Distancia (UNED). Universidad pública española. Grados, posgrados, másteres, investigación, formación permanente, idiomas, microtítulos y grados combinados. Estudios universitarios online con tutorias presenciales en centros asociados por todo el mundo",
      "email":"infouned@adm.uned.es",
      "telephone":"+34 91 398 6000",
      "address":{"@type":"PostalAddress","streetAddress":"Calle Bravo Murillo 38","addressLocality":"Madrid","addressCountry":"ES","postalCode":"28015"}
    }
    </script>
	
    <script>
        $(function() {
            // Capturamos el idioma del navegador
            var languageNav = navigator.language.substring(0,2);
            if(!localStorage.getItem('languageNav')) {
                localStorage.setItem('languageNav', languageNav);
            }
            
                var languageTo = localStorage.getItem('languageNav');
                

                var currentLocale = 'es';
                var urlTo= $("a[lang="+languageTo+"]").attr("href");
                if(languageTo != currentLocale && urlTo){
                    window.location.href = $("a[lang="+languageTo+"]").attr("href");
                }
        });
    </script>
        <!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-MN4V7KH');</script>
<!-- End Google Tag Manager -->
    </head>

    <body>
    	
        <!-- Google Tag Manager (noscript) -
sitemap.xml 200 OK
Type URL Set URLs 0 entries Valid XML No
B
TLS Certificate Expiry & Recommendations
316 days until leaf cert expires — 6 issues to address
REVIEW

Certificate validity

316
days left
0d 30d 60d 90d+

Recommended actions

  • Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • Add includeSubDomains to the HSTS directive
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • Enable DNSSEC on your domain for DNS spoofing protection
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
1 A records, 61 ms lookup
PASS
1 A records, 61 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 62.204.213.111
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: sun.rediris.es, ns1.uned.es, ns2.uned.es, chico.rediris.es
Info::
1 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 61 ms
Got: 61 ms
A62.204.213.111
AAAA—
CNAME—
NSsun.rediris.es, ns1.uned.es, ns2.uned.es, chico.rediris.es
MX
0 uned-es.mail.protection.outlook.com
TXT
MS=ms86712532
HARICA-XqxrVXxTwAws8f2L3rR
adobe-idp-site-verification=2c34fab5c4bc9716e51ab9df57125369c60d54066c2689eb6fb1...
578649242
google-site-verification=kKw0hTrnPdfAm7Vj5Eit9iCUWwFOS7hfWKqCmmlT9ns
SPF v=spf1 ip4:62.204.192.0/19 ip6:2a01:4a80::/32 include:spf.protection.outlook.co...
google-site-verification=03cnLGUOXbFLrl9IzHoOrGINSILzrbdLgpBbSdN4nos
adobe-idp-site-verification=2cb58f811607302b56969675a8fa01f26cf3c0f625e364435e9a...
CAALookup not available with standard resolver
Resolved in 61 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more ▾

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

301https://www.uned.es/
200https://uned.es/

Preferred variant: non-www

HTTP → HTTPS

302http://uned.es/ → https://uned.es/

Use 301 (permanent) instead of 302 (temporary)

A+
HTTP Probe Timing
Total 81 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
62 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
3 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
10 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
82 ms
Total Time Total request time from DNS lookup through full response.
82 ms

Connection waterfall

DNS Lookup 62 ms TCP Connect 3 ms TLS Handshake 10 ms Server Processing 6 ms Content Transfer 0 ms
Domain Intelligence
Domain intelligence data not available
INFO
Domain intelligence data not available

RDAP and WHOIS lookup both failed

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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