Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.BDNS Records1 A records, 13 ms lookupREVIEW
| A | 93.115.102.100 |
| AAAA | 2a14:7ac0::70 |
| CNAME | rs-static.doctolib.com |
| NS | — |
| MX | — |
| TXT | — |
| 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
A CNAME at the zone apex can break MX and NS records. Use ALIAS/ANAME or A records instead.
CNAME at the apex (example.com) breaks every other apex record (MX, TXT, NS) — DNS-protocol violation per RFC 1034.
Learn more ▾ ▴
RFC 1034 forbids CNAME alongside other records at the same name. Some DNS providers offer ALIAS / ANAME / flattened-CNAME records that work around this — use those instead. Otherwise apex-level CNAME breaks email (no MX), domain ownership verification (no TXT), and more.
Source: RFC 1034
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.
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
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)
BTLS Certificate Expiry & Recommendations110 days until leaf cert expires — 2 issues to addressREVIEW
Certificate validity
Recommended actions
- Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+Redirect Chain0 redirect(s), 365 ms totalPASS
https://www.doctolib.fr
365 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://www.doctolib.fr | 403 | 365 ms | HTTP/1.1 | cloudflare |
A+IPv6 ReadinessIPv6 reachable (1 ms)PASS
A+Crawlabilityrobots.txt present, sitemap with 1 URLsPASS
User-agent: ia_archiver
Disallow: /account/
Disallow: /appointment_online_payments/
Disallow: /appointments/
User-agent: *
Disallow: /appointments/*/reviews/
Disallow: /account/appointments/*/export
Disallow: /sessions/new?redirection=
Disallow: /appointments/
Disallow: /*?*availabilities=
Disallow: /*?*language=
Disallow: /*?*insurance_sector=
Disallow: /*?*telehealth=
Disallow: /*?*search_mode=
Disallow: /*availabilitiesBefore=
Disallow: /*insuranceSector=
Disallow: /*telehealth=
Disallow: /*regulationSector[]=
Disallow: /*regulationSector%5B%5D=
Disallow: /*languages[]=
Disallow: /*languages%5B%5D=
Disallow: /search_results/*.json
Disallow: /search
Disallow: /sessions/reconnect
Disallow: /*availabilities*
Disallow: */booking/*
Disallow: */patient-request*
Disallow: */patient_messaging*
Disallow: */patient_interests
Disallow: */patient-health-search*
Disallow: */phs_proxy/*
Disallow: */online_booking/draft/new.json
Disallow: /captcha
Disallow: */filters
Disallow: */doctors/*
Disallow: /zipper_sandbox
Disallow: /iframe/
Disallow: /button/
Disallow: /r/*
Disallow: /centre-de-sante/paris/ratp
Disallow: /q/*
Disallow: /authn/*
Disallow: /sessions/
Allow: /sessions/new
Allow: /*?*availabilities=1
Disallow: /api/
Disallow: /ap/
Disallow: /configuration/
Disallow: /*==
Disallow: /*%3D%3D
Disallow: /*%3d%3d
Disallow: /*/1000
Sitemap: https://www.doctolib.fr/sitemap_lang.xml
Sitemap: https://www.doctolib.fr/sitemap.xml
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: www
HTTP → HTTPS
Consistent
A+Domain Intelligencedoctolib.fr — via CSC CORPORATE DOMAINS INC., 12 years, 11 months oldPASS
63 days
September 13, 2026
110 days
Issued by Gandi
12 years, 11 months
Registered July 9, 2013
Enabled
Protects against DNS spoofing
Unknown
2a14:7ac0::70
CSC CORPORATE DOMAINS INC.
Expiry timeline
Recommended actions
- Renew the domain or enable auto-renewal to prevent accidental expiry