Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
BRedirect Chain2 redirect(s), 988 ms totalREVIEW
https://upc.edu
419 ms · HTTP/1.1
https://www.upc.edu/
455 ms · HTTP/1.1
https://www.upc.edu/ca
114 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://upc.edu | 301 | 419 ms | HTTP/1.1 | |
| 2 | https://www.upc.edu/ | 301 | 455 ms | HTTP/1.1 | |
| 3 | https://www.upc.edu/ca | 200 | 114 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
Each redirect adds latency. Try to minimize the chain to 1 hop.
Redirect chain — each hop adds latency; combine into one redirect where possible.
Source: Google Search Central / web.dev
CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
BTLS Certificate Expiry & Recommendations217 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
- 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 Records1 A records, 115 ms lookupPASS
| A | 147.83.2.135 |
| AAAA | — |
| CNAME | — |
| NS | ns1.cesca.cat, ns2.cesca.cat, ns2.upc.edu, ns1.upc.edu |
| MX | 1 aspmx.l.google.com 5 alt2.aspmx.l.google.com 5 alt1.aspmx.l.google.com 10 alt4.aspmx.l.google.com 10 alt3.aspmx.l.google.com |
| TXT | google-site-verification=qFT1lJveXpwibVv5f8M5BaDBWOhxDSjuvwfv_awou4Y 1657696626453 MS=5F57EA05461D4811AEF4C3F8ED0F52F53DBD8A4B brevo-code:1f3f68c59c45afb7f1aa82e0fa5f50c9 voje86dvmac5sh6b3s8fgdf179 facebook-domain-verification=njmvfgzqisovaytxj5f8up1ovvrf3q 1687262495881 SPF v=spf1 include:_spf1main.upc.edu include:_spf1secondary.upc.edu include:_spf2ls... |
| CAA | Lookup not available with standard resolver |
Multiple A records provide failover if one server goes down.
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.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
ACrawlabilityrobots.txt present, no sitemapPASS
A sitemap helps search engines discover and index your pages more efficiently.
No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.
Learn more ▾ ▴
A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.
Source: sitemaps.org / Google Search Central
Sitemap: https://www.upc.edu/sitemap.xml.gz
# Define access-restrictions for robots/spiders
# http://www.robotstxt.org/wc/norobots.html
# By default we allow robots to access all areas of our site
# already accessible to anonymous users
User-agent: *
Disallow: */noindex-upc/*
Disallow: /*sendto_form$
Disallow: /*folder_factories$
Disallow: /sga/*.pdf
Disallow: /slt/gina*
Disallow: /slt/assessorament*
Disallow: /slt/aeronautica*
Disallow: /slt/informe-mundial*
Disallow: /slt/mobility*
Disallow: /sostenible2015*
Disallow: *manage_translations_form$
Disallow: *folder_contents$
Disallow: /sri/ca/estudiantat/mobilitat-pas/resolucions*
Disallow: /sri/ca/estudiantat/mobilitat-pdi/personal-upc/erasmus-accio-ka10*
Disallow: /genweb-pre*
Disallow: /ca/media*
Disallow: /es/media*
Disallow: /en/media*
Disallow: */content/*
Disallow: */continguts-home/*
Disallow: */contenidos-home/*
Disallow: */home-contents/*
Disallow: /ca/serveis/content/intro-serveis*
# Add Googlebot-specific syntax extension to exclude forms
# that are repeated for each piece of content in the site
# the wildcard is only supported by Googlebot
# http://www.google.com/support/webmasters/bin/answer.py?answer=40367&ctx=sibling
User-Agent: Googlebot
Disallow: /*?
Disallow: /*atct_album_view$
Disallow: /*folder_factories$
Disallow: /*folder_summary_view$
Disallow: /*login_form$
Disallow: /*mail_password_form$
Disallow: /*search
Disallow: /*search_rss$
Disallow: /*sendto_form$
Disallow: /*summary_view$
Disallow: /*thumbnail_view$
Disallow: /*view$
Disallow: /genweb-pre*
Disallow: /ca/media*
Disallow: /es/media*
Disallow: /en/media*
Disallow: */content/*
Disallow: */continguts-home/*
Disallow: */contenidos-home/*
Disallow: */home-contents/*
Disallow: /ca/serveis/content/intro-serveis*
No sitemap found
Adding a sitemap helps search engines discover your pages.
AURL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Use 301 (permanent) instead of 302 (temporary)
A+Domain Intelligenceupc.edu — 25 years, 5 months old, hosted on CESCA-AC, ESPASS
410 days
July 31, 2027
217 days
Issued by Hellenic Academic and Research Institutions CA
25 years, 5 months
Registered March 29, 2001
Status unknown
Protects against DNS spoofing
CESCA-AC, ES
ASN AS13041
147.83.2.135
Registrar unknown