Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.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
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations83 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
BCDN & DeliveryCloudflareREVIEW
A+DNS Records2 A records, 55 ms lookupPASS
| A | 172.64.149.29, 104.18.38.227 |
| AAAA | — |
| CNAME | — |
| NS | barbara.ns.cloudflare.com, carl.ns.cloudflare.com |
| MX | 0 mercola-com.mail.protection.outlook.com |
| TXT | google-site-verification=if31AEpAfjVHjciJAX-fZjMrfaCN_RhofEvcstDyjjU nordpass-domain-verification=8ac970ed70674599152d86e8dcddf5264f9a0e64905146230e9... facebook-domain-verification=edg89inf02plm1gm5e0uv99gnjeqyy _bf307j19r9ghe4qops20beo7vgsr26p qr949hs57rltk0rc159peg2es7 yahoo-verification-key=KlE7Do8EAKnUsCaAnYehuMNgKx473mfK19Xh75kCzgA= domain-verification=ebf7235cbfee33df56f33d1aaeffd2752ffbf6394c517ae65b77691232f2... google-site-verification=a_nV4bzgbJ4FA1YK8u-Nq_spgK8VEVJXXZpig-OCsLg openai-domain-verification=dv-eK6phPBesv2Q06NYtmrBLuIl SPF v=spf1 include:spf.protection.outlook.com include:dayforcehcm.com include:spf-us... google-site-verification=i4IuLM_7dsdpFTUh3S-CCMH5LcMhoyTCaOJUFa_xYRs _gh-ghe-mercola-consulting-services-e.mercola.com v9si2ikvv1ir18ooaucq1mmbqb MS=991E998923037D473B32F2C24FC3FA16EF3574F6 google-site-verification=g47_EaYdx-9bBfq5LG07w-VjCGKhjwbGYsOy5kM1Ffg |
| CAA | Lookup not available with standard resolver |
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.
ARedirect Chain1 redirect(s), 356 ms totalPASS
https://mercola.com
63 ms · HTTP/1.1
https://www.mercola.com/
293 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://mercola.com | 301 | 63 ms | HTTP/1.1 | cloudflare |
| 2 | https://www.mercola.com/ | 200 | 293 ms | HTTP/1.1 | cloudflare |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 33 URLsPASS
User-agent: *
Disallow: /cmstemplates/
Disallow: /CMSPages/
Disallow: /CMSHelp/
Disallow: /CMSMessages/
Allow: /CMSPages/GetCSS.aspx
Allow: /cmstemplates/mercola/registrationpopup-exit.aspx
Allow: /cmstemplates/mercola/registrationpopup.aspx
Allow: /cmstemplates/mercola/registrationpopupmobile.aspx
Allow: /cmstemplates/mercola/tplPage-resolutionguideV1.aspx
Allow: /cmstemplates/mercola/tplPage-health-tips-resolution-guide.aspx
Sitemap: https://www.mercola.com/sitemap.xml
A+Domain Intelligencemercola.com — via Register.com - Network Solutions, LLC, 28 years, 8 months old, hosted on CloudflarePASS
165 days
December 29, 2026
83 days
Issued by Let's Encrypt
28 years, 8 months
Registered December 30, 1997
Not enabled
Protects against DNS spoofing
Cloudflare
ASN AS13335
172.64.149.29
Register.com - Network Solutions, LLC
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.
Learn more ▾ ▴
DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.
Source: ICANN / RFC 4033
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.
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