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https://www.sorbonne-universite.fr

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
90
GRADE
A
FIX
0
REVIEW
2
PASS
7
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
7 PASS 2 REVIEW
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

B
TLS Certificate Expiry & Recommendations
78 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

78
days left
0d 30d 60d 90d+

Recommended actions

  • 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
4 A records, 28 ms lookup
PASS
4 A records, 28 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 151.101.194.216, 151.101.130.216, 151.101.2.216, 151.101.66.216
Info::
No IPv6 (AAAA) records
Info::
No NS records found
Info::
No MX records — email not configured via DNS
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
No SPF record found in TXT records
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
Info::
DNS resolution time: 28 ms
Got: 28 ms
A151.101.194.216, 151.101.130.216, 151.101.2.216, 151.101.66.216
AAAA—
CNAME—
NS—
MX—
TXT—
CAALookup not available with standard resolver
Resolved in 28 ms

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.

SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.

Why this matters

Without SPF, receiving servers can't validate sending IPs — your domain is easier to spoof in phishing.

Learn more ▾

SPF complements DMARC. Both should be published. SPF records list authorized sending IPs (e.g., `v=spf1 include:_spf.google.com ~all` for Google Workspace). After publishing, verify in Google Postmaster Tools or mxtoolbox.

Source: RFC 7208 (SPF)

A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://www.sorbonne-universite.fr

https://www.sorbonne-universite.fr

9 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://www.sorbonne-universite.fr2009 msHTTP/1.1
A+
Crawlability
robots.txt present, sitemap with 2 URLs
PASS
robots.txt present, sitemap with 2 URLs
Info::
robots.txt is present
Got: 2184 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 2 entries
Info::
Sitemap index with 2 child sitemaps
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

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 2184 B Sitemaps referenced 0 User-agents *, Yandexbot, Scrapy Blocking No — crawling allowed
#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed

# https://stackoverflow.com/questions/24629061/robots-txt-is-this-working/24661543#24661543
User-agent: Yandexbot
Disallow: /

# Block Scrapy bot.
User-agent: Scrapy
Disallow: /
sitemap.xml 200 OK
Type Sitemap Index URLs 2 entries Valid XML Yes
Child Sitemaps:
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: www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.sorbonne-universite.fr/
301https://sorbonne-universite.fr/

Preferred variant: www

HTTP → HTTPS

301http://www.sorbonne-universite.fr/ → https://www.sorbonne-universite.fr/

Consistent

A+
Domain Intelligence
sorbonne-universite.fr — via GIP RENATER, 15 years, 5 months old, hosted on Fastly
PASS
sorbonne-universite.fr — via GIP RENATER, 15 years, 5 months old, hosted on Fastly
Info::
Domain registered until Dec 12, 2026 (8 months remaining)
Info::
Registrar: GIP RENATER
Info::
Hosting: Fastly
Got: AS54113
Domain expiry

153 days

December 12, 2026

SSL certificate

78 days

Issued by Let's Encrypt

Domain age

15 years, 5 months

Registered January 12, 2011

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Fastly

ASN AS54113

151.101.66.216

Registrar

GIP RENATER

Lock status unknown 3 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Registrar GIP RENATER
Created January 12, 2011 (15 years, 5 months ago)
Expires December 12, 2026 (8 months)
Last Updated January 31, 2026
Name Servers ganesh.upmc.fr, shiva.jussieu.fr, soleil.uvsq.fr
Registrant SORBONNE UNIVERSITE
Hosting
IP Address 151.101.66.216
ASN AS54113 (FASTLY - Fastly, Inc., US)
Provider Fastly
Data source: rdap (0.4s)
A+
HTTP Probe Timing
Total 55 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
28 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
0 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
4 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
55 ms
Total Time Total request time from DNS lookup through full response.
56 ms

Connection waterfall

DNS Lookup 28 ms TCP Connect 0 ms TLS Handshake 4 ms Server Processing 22 ms Content Transfer 1 ms
A+
CDN & Delivery
Fastly (HIT, MISS)
PASS
Fastly (HIT, MISS)
Info::
Site is served via Fastly CDN
Got: x-served-by: cache-par-lfpb1150065-PAR, cache-toj-leto2350045-TOJ
Info::
CDN cache status: HIT, MISS
CDN Detected: Fastly
Provider Fastly Cache Status HIT, MISS Evidence x-served-by: cache-par-lfpb1150065-PAR, cache-toj-leto2350045-TOJ
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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