merca20.com

Checked 22 October 2026, 09:50 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 0 failed 6 info

Registration

info

.com generic · Cloudflare, Inc. · expires 2027-03-05

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Cloudflare, Inc.
Registered
5 March 2002
Last changed
3 February 2026
Expires
5 March 2027
Status
client transfer prohibited
Registry nameservers
rick.ns.cloudflare.com, zara.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 2027-03-05 #3
    The registration is valid until 2027-03-05 (134 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

rick.ns.cloudflare.com, zara.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
rick.ns.cloudflare.com, zara.ns.cloudflare.com
NS in the zone
rick.ns.cloudflare.com, zara.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
rick.ns.cloudflare.com173.245.59.139 108.162.193.139 172.64.33.139 2a06:98c1:50::ac40:218b 2606:4700:58::adf5:3b8b 2803:f800:50::6ca2:c18bAS13335 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., US108.162.193.139 172.64.33.139 173.245.59.139 2606:4700:58::adf5:3b8b 2803:f800:50::6ca2:c18b 2a06:98c1:50::ac40:218b
zara.ns.cloudflare.com172.64.32.148 108.162.192.148 173.245.58.148 2803:f800:50::6ca2:c094 2606:4700:50::adf5:3a94 2a06:98c1:50::ac40:2094AS13335 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., US108.162.192.148 172.64.32.148 173.245.58.148 2606:4700:50::adf5:3a94 2803:f800:50::6ca2:c094 2a06:98c1:50::ac40:2094

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: rick.ns.cloudflare.com, zara.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
rick.ns.cloudflare.com 173.245.59.139NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
rick.ns.cloudflare.com 108.162.193.139NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
rick.ns.cloudflare.com 172.64.33.139NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
rick.ns.cloudflare.com 2a06:98c1:50::ac40:218bNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
rick.ns.cloudflare.com 2606:4700:58::adf5:3b8bNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
rick.ns.cloudflare.com 2803:f800:50::6ca2:c18bNOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
zara.ns.cloudflare.com 172.64.32.148NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
zara.ns.cloudflare.com 108.162.192.148NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
zara.ns.cloudflare.com 173.245.58.148NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
zara.ns.cloudflare.com 2803:f800:50::6ca2:c094NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
zara.ns.cloudflare.com 2606:4700:50::adf5:3a94NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
zara.ns.cloudflare.com 2a06:98c1:50::ac40:2094NOERROR, 24 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: rick.ns.cloudflare.com: "2026.10.2"; zara.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 2417998452 · primary rick.ns.cloudflare.com

Found

Primary (MNAME)
rick.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417998452
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
rick.ns.cloudflare.com (173.245.59.139)2417998452
rick.ns.cloudflare.com (108.162.193.139)2417998452
rick.ns.cloudflare.com (172.64.33.139)2417998452
rick.ns.cloudflare.com (2a06:98c1:50::ac40:218b)2417998452
rick.ns.cloudflare.com (2606:4700:58::adf5:3b8b)2417998452
rick.ns.cloudflare.com (2803:f800:50::6ca2:c18b)2417998452
zara.ns.cloudflare.com (172.64.32.148)2417998452
zara.ns.cloudflare.com (108.162.192.148)2417998452
zara.ns.cloudflare.com (173.245.58.148)2417998452
zara.ns.cloudflare.com (2803:f800:50::6ca2:c094)2417998452
zara.ns.cloudflare.com (2606:4700:50::adf5:3a94)2417998452
zara.ns.cloudflare.com (2a06:98c1:50::ac40:2094)2417998452

Checks

  • ✓ Serial 2417998452 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 rick.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 2417998452 is a Unix timestamp (2046-08-16 02:14 UTC).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Signatures valid until
23 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 F55560946F863E57…yes

DNSKEY in the zone

Key tagRoleAlgorithm
2371KSK (257)ECDSAP256SHA256 (13)
34505ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 2371 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-21 08:50 UTC and expires at 2026-10-23 10:50 UTC.

Records

info

19 records at the apex

Found

Read from
173.245.59.139:53
TypeValueTTL
SOArick.ns.cloudflare.com. dns.cloudflare.com. 2417998452 10000 2400 604800 18001800
NSrick.ns.cloudflare.com.86400
NSzara.ns.cloudflare.com.86400
A172.66.167.25300
A104.20.31.150300
AAAA2606:4700:10::ac42:a719300
AAAA2606:4700:10::6814:1f96300
MX1 aspmx.l.google.com.300
MX10 aspmx2.googlemail.com.300
MX10 aspmx3.googlemail.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"apple-domain-verification=d7O3JnkIQJLILES0"300
TXT"facebook-domain-verification=pzmh5x098dvwhya354a55bowrn3npv"300
TXT"loaderio=70c871f2c3b60675c8559f0df2c2f68d"300
TXT"mandrill_verify.quRP7GQIlMEblALCAtLTsg"300
TXT"mt-99652130"300
TXT"v=spf1 redirect=_sjozonuh8.sdmarc.net"300
TXT"zoho-verification=zb15154323.zmverify.zoho.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, 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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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