mercola.com

Checked 22 October 2026, 09:50 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · Register.com - Network Solutions, LLC · expires 2026-12-29

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Register.com - Network Solutions, LLC
Registered
30 December 1997
Last changed
29 November 2025
Expires
29 December 2026
Status
client transfer prohibited
Registry nameservers
barbara.ns.cloudflare.com, carl.ns.cloudflare.com
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2026-12-29 #3
    The registration is valid until 2026-12-29 (67 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

barbara.ns.cloudflare.com, carl.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
barbara.ns.cloudflare.com, carl.ns.cloudflare.com
NS in the zone
barbara.ns.cloudflare.com, carl.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
barbara.ns.cloudflare.com172.64.32.248 108.162.192.248 173.245.58.248 2803:f800:50::6ca2:c0f8 2a06:98c1:50::ac40:20f8 2606:4700:50::adf5:3af8AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.192.248 172.64.32.248 173.245.58.248 2606:4700:50::adf5:3af8 2803:f800:50::6ca2:c0f8 2a06:98c1:50::ac40:20f8
carl.ns.cloudflare.com173.245.59.106 108.162.193.106 172.64.33.106 2a06:98c1:50::ac40:216a 2803:f800:50::6ca2:c16a 2606:4700:58::adf5:3b6aAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.193.106 172.64.33.106 173.245.59.106 2606:4700:58::adf5:3b6a 2803:f800:50::6ca2:c16a 2a06:98c1:50::ac40:216a

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: barbara.ns.cloudflare.com, carl.ns.cloudflare.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 12 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .com
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
barbara.ns.cloudflare.com 172.64.32.248NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
barbara.ns.cloudflare.com 108.162.192.248NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
barbara.ns.cloudflare.com 173.245.58.248NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
barbara.ns.cloudflare.com 2803:f800:50::6ca2:c0f8NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
barbara.ns.cloudflare.com 2a06:98c1:50::ac40:20f8NOERROR, 21 ms, authoritativenoyes / yesrefused2026.10.2
barbara.ns.cloudflare.com 2606:4700:50::adf5:3af8NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
carl.ns.cloudflare.com 173.245.59.106NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
carl.ns.cloudflare.com 108.162.193.106NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
carl.ns.cloudflare.com 172.64.33.106NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
carl.ns.cloudflare.com 2a06:98c1:50::ac40:216aNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
carl.ns.cloudflare.com 2803:f800:50::6ca2:c16aNOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
carl.ns.cloudflare.com 2606:4700:58::adf5:3b6aNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 12 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: barbara.ns.cloudflare.com: "2026.10.2"; carl.ns.cloudflare.com: "2026.10.2". Hide or replace the version string.
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2417064165 · primary barbara.ns.cloudflare.com

Found

Primary (MNAME)
barbara.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417064165
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
barbara.ns.cloudflare.com (172.64.32.248)2417064165
barbara.ns.cloudflare.com (108.162.192.248)2417064165
barbara.ns.cloudflare.com (173.245.58.248)2417064165
barbara.ns.cloudflare.com (2803:f800:50::6ca2:c0f8)2417064165
barbara.ns.cloudflare.com (2a06:98c1:50::ac40:20f8)2417064165
barbara.ns.cloudflare.com (2606:4700:50::adf5:3af8)2417064165
carl.ns.cloudflare.com (173.245.59.106)2417064165
carl.ns.cloudflare.com (108.162.193.106)2417064165
carl.ns.cloudflare.com (172.64.33.106)2417064165
carl.ns.cloudflare.com (2a06:98c1:50::ac40:216a)2417064165
carl.ns.cloudflare.com (2803:f800:50::6ca2:c16a)2417064165
carl.ns.cloudflare.com (2606:4700:58::adf5:3b6a)2417064165

Checks

  • ✓ Serial 2417064165 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver barbara.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417064165 is a Unix timestamp (2046-08-05 06:42 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

22 records at the apex

Found

Read from
172.64.32.248:53
TypeValueTTL
SOAbarbara.ns.cloudflare.com. dns.cloudflare.com. 2417064165 10000 2400 604800 18001800
NSbarbara.ns.cloudflare.com.86400
NScarl.ns.cloudflare.com.86400
A172.64.149.29300
A104.18.38.227300
MX0 mercola-com.mail.protection.outlook.com.3600
TXT"MS=991E998923037D473B32F2C24FC3FA16EF3574F6"300
TXT"_bf307j19r9ghe4qops20beo7vgsr26p"300
TXT"_gh-ghe-mercola-consulting-services-e.mercola.com"300
TXT"docusign=06cc6c3c-4607-4a2c-a00b-de45f99c7f05"300
TXT"domain-verification=ebf7235cbfee33df56f33d1aaeffd2752ffbf6394c517ae65b77691232f27981"300
TXT"facebook-domain-verification=edg89inf02plm1gm5e0uv99gnjeqyy"300
TXT"google-site-verification=a_nV4bzgbJ4FA1YK8u-Nq_spgK8VEVJXXZpig-OCsLg"300
TXT"google-site-verification=g47_EaYdx-9bBfq5LG07w-VjCGKhjwbGYsOy5kM1Ffg"300
TXT"google-site-verification=i4IuLM_7dsdpFTUh3S-CCMH5LcMhoyTCaOJUFa_xYRs"300
TXT"google-site-verification=if31AEpAfjVHjciJAX-fZjMrfaCN_RhofEvcstDyjjU"300
TXT"nordpass-domain-verification=8ac970ed70674599152d86e8dcddf5264f9a0e64905146230e9edf5e5c6ef60a"300
TXT"openai-domain-verification=dv-eK6phPBesv2Q06NYtmrBLuIl"300
TXT"qr949hs57rltk0rc159peg2es7"300
TXT"v9si2ikvv1ir18ooaucq1mmbqb"300
TXT"v=spf1 include:spf.protection.outlook.com include:dayforcehcm.com include:spf-us.emailsignatures365.com include:spf.zohomail360.com ip4:199.66.161.66/26 ip4:199.66.166.130/25 ip4:199.66.167.130/27 ip4:199.66.166.166 ip4:4.49.65.137 ip4:4.49.65.151 ~all"300
TXT"yahoo-verification-key=KlE7Do8EAKnUsCaAnYehuMNgKx473mfK19Xh75kCzgA="300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35