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https://persee.fr

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
84
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
5 PASS 3 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.

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 461 URLs
REVIEW
robots.txt present, sitemap with 461 URLs
Info::
robots.txt is present
Got: 428 bytes
Critical::
robots.txt blocks all crawlers
Disallow: / for all user-agents prevents search engines from indexing any page. This will remove the site from search results.
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 461 entries
Info::
Sitemap index with 461 child sitemaps
Info::
robots.txt references sitemap

Disallow: / for all user-agents prevents search engines from indexing any page. This will remove the site from search results.

Why this matters

Disallow: / in robots.txt blocks every search crawler — the site becomes invisible in organic search.

Learn more ▾

Common deployment mistake: a staging robots.txt with `User-agent: * / Disallow: /` ships to prod. The site falls out of search results within days. Verify your robots.txt is the production-intended version. If this is intentional (private site), no action needed.

Source: Google Search Central

robots.txt 200 OK
Size 428 B Sitemaps referenced 1 User-agents Applebot, Superfeedr bot, Bingbot, Slurp, Googlebot-Image, *, Superfeedr bot/2.0, Baiduspider, Linguee, Googlebot, MSNBot, MSNBot-Media Blocking Yes — all crawlers blocked
User-agent: Applebot
User-agent: Superfeedr bot
User-agent: Superfeedr bot/2.0
User-agent: Baiduspider
User-agent: Linguee
Disallow: /

User-agent: Googlebot
User-agent: Bingbot
User-agent: MSNBot
User-agent: Slurp
Disallow: /votre-avis/
Disallow: /web/guest/forum-demo/
Allow: /

User-agent: Googlebot-Image
User-agent: MSNBot-Media
Disallow: /renderPage/

User-agent: *
Disallow: /

Sitemap: https://www.persee.fr/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 461 entries Valid XML Yes
Child Sitemaps:
B
TLS Certificate Expiry & Recommendations
212 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

212
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
  • 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, 57 ms lookup
PASS
1 A records, 57 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 140.77.166.118
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
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: 57 ms
Got: 57 ms
A140.77.166.118
AAAA—
CNAME—
NS—
MX—
TXT—
CAALookup not available with standard resolver
Resolved in 57 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.

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.persee.fr

https://www.persee.fr

356 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://www.persee.fr200356 msHTTP/1.1Apache
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.persee.fr/
https://persee.fr/

HTTP → HTTPS

301http://www.persee.fr/ → https://www.persee.fr/

Consistent

A+
Domain Intelligence
persee.fr — via GIP RENATER, 22 years, 1 months old, hosted on FR-LYRES Lyon Recherche et Enseignement Superieur LyRES, EU
PASS
persee.fr — via GIP RENATER, 22 years, 1 months old, hosted on FR-LYRES Lyon Recherche et Enseignement Superieur LyRES, EU
Info::
Domain registered until Jul 27, 2026 (3 months remaining)
Info::
Registrar: GIP RENATER
Warning::
Registrar lock is NOT enabled
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Info::
Hosting: FR-LYRES Lyon Recherche et Enseignement Superieur LyRES, EU
Got: AS1945
Domain expiry

44 days

July 27, 2026

SSL certificate

212 days

Issued by Hellenic Academic and Research Institutions CA

Domain age

22 years, 1 months

Registered July 12, 2004

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

FR-LYRES Lyon Recherche et Enseignement Superieur LyRES, EU

ASN AS1945

140.77.166.118

Registrar

GIP RENATER

Unlocked 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Renew the domain or enable auto-renewal to prevent accidental expiry
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar GIP RENATER
Created July 12, 2004 (22 years, 1 months ago)
Expires July 27, 2026 (3 months)
Last Updated August 31, 2025
Name Servers diogene.univ-lyon2.fr, dns.ens-lyon.fr
Registrant Ecole Normale supérieure de Lyon
Hosting
IP Address 140.77.166.118
ASN AS1945 (FR-LYRES Lyon Recherche et Enseignement Superieur LyRES, EU)
Provider FR-LYRES Lyon Recherche et Enseignement Superieur LyRES, EU
Data source: rdap (0.4s)

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Why this matters

Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.

Learn more ▾

Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A
HTTP Probe Timing
Total 420 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
30 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
22 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
57 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
376 ms
Total Time Total request time from DNS lookup through full response.
421 ms

Connection waterfall

DNS Lookup 30 ms TCP Connect 22 ms TLS Handshake 57 ms Server Processing 267 ms Content Transfer 45 ms
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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