mrgreen.com

Checked 22 October 2026, 09:53 UTC · via 8.8.8.8
!Passed with warnings
27 passed 2 warnings 0 failed 6 info

Registration

info

.com generic · SafeNames Ltd. · expires 2027-09-09

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
SafeNames Ltd.
Registered
9 September 2004
Last changed
1 October 2025
Expires
9 September 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ashley.ns.cloudflare.com, coby.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 2027-09-09 #3
    The registration is valid until 2027-09-09 (322 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ashley.ns.cloudflare.com, coby.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ashley.ns.cloudflare.com, coby.ns.cloudflare.com
NS in the zone
ashley.ns.cloudflare.com, coby.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
ashley.ns.cloudflare.com108.162.192.71 173.245.58.71 172.64.32.71 2a06:98c1:50::ac40:2047 2803:f800:50::6ca2:c047 2606:4700:50::adf5:3a47AS13335 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., US108.162.192.71 172.64.32.71 173.245.58.71 2606:4700:50::adf5:3a47 2803:f800:50::6ca2:c047 2a06:98c1:50::ac40:2047
coby.ns.cloudflare.com108.162.193.92 172.64.33.92 173.245.59.92 2803:f800:50::6ca2:c15c 2a06:98c1:50::ac40:215c 2606:4700:58::adf5:3b5cAS13335 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., US108.162.193.92 172.64.33.92 173.245.59.92 2606:4700:58::adf5:3b5c 2803:f800:50::6ca2:c15c 2a06:98c1:50::ac40:215c

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ashley.ns.cloudflare.com, coby.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
ashley.ns.cloudflare.com 108.162.192.71NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ashley.ns.cloudflare.com 173.245.58.71NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ashley.ns.cloudflare.com 172.64.32.71NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ashley.ns.cloudflare.com 2a06:98c1:50::ac40:2047NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ashley.ns.cloudflare.com 2803:f800:50::6ca2:c047NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ashley.ns.cloudflare.com 2606:4700:50::adf5:3a47NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
coby.ns.cloudflare.com 108.162.193.92NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
coby.ns.cloudflare.com 172.64.33.92NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
coby.ns.cloudflare.com 173.245.59.92NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
coby.ns.cloudflare.com 2803:f800:50::6ca2:c15cNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
coby.ns.cloudflare.com 2a06:98c1:50::ac40:215cNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
coby.ns.cloudflare.com 2606:4700:58::adf5:3b5cNOERROR, 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: ashley.ns.cloudflare.com: "2026.10.2"; coby.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 2417035989 · primary ashley.ns.cloudflare.com

Found

Primary (MNAME)
ashley.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417035989
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ashley.ns.cloudflare.com (108.162.192.71)2417035989
ashley.ns.cloudflare.com (173.245.58.71)2417035989
ashley.ns.cloudflare.com (172.64.32.71)2417035989
ashley.ns.cloudflare.com (2a06:98c1:50::ac40:2047)2417035989
ashley.ns.cloudflare.com (2803:f800:50::6ca2:c047)2417035989
ashley.ns.cloudflare.com (2606:4700:50::adf5:3a47)2417035989
coby.ns.cloudflare.com (108.162.193.92)2417035989
coby.ns.cloudflare.com (172.64.33.92)2417035989
coby.ns.cloudflare.com (173.245.59.92)2417035989
coby.ns.cloudflare.com (2803:f800:50::6ca2:c15c)2417035989
coby.ns.cloudflare.com (2a06:98c1:50::ac40:215c)2417035989
coby.ns.cloudflare.com (2606:4700:58::adf5:3b5c)2417035989

Checks

  • ✓ Serial 2417035989 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 ashley.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 2417035989 is a Unix timestamp (2046-08-04 22:53 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
23 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA1 38879E57C2A6ED6C…yes
2371ECDSAP256SHA256 (13)SHA256 B9F75AD63784ECDE…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 (SHA1), 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 08:53 UTC and expires at 2026-10-23 10:53 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

warn

23 records at the apex

Found

Read from
108.162.192.71:53
TypeValueTTL
SOAashley.ns.cloudflare.com. dns.cloudflare.com. 2417035989 10000 2400 604800 18001800
NSashley.ns.cloudflare.com.86400
NScoby.ns.cloudflare.com.86400
A13.227.173.6560
A13.227.173.9160
A13.227.173.10660
A13.227.173.10060
MX5 mx1.hc1715-26.c3s2.iphmx.com.120
MX5 mx2.hc1715-26.c3s2.iphmx.com.120
TXT"MS=ms18694012"30
TXT"MS=ms72117248"30
TXT"MS=ms92779572"30
TXT"_qhrjb71pi1abt8u6ox6awxr75gug9qv"30
TXT"_qii0t9zl0y7aaflqv2czg9l3448av1x"30
TXT"facebook-domain-verification=5afcdopfe5sptaev1xqkv6riatf5yg"30
TXT"google-site-verification=IFDMs7AaOa4EiaHnAM0W2qt_zbb6u24RfpSnkeXZ30o"30
TXT"google-site-verification=b3ANbKXQGgNmo41QN4ggD1JVI0rXZ5SlDVe95ciwGlg"30
TXT"identrust_validate=DkG8Nk42JNhHRvShuKIwQCzoPtu1JpgWqR5KfGdthITJ"30
TXT"identrust_validate=ZBeMc+bHJmqiJNA5YfVHH1JwI3jrCr43ZSFoVPja8+MK"30
TXT"k5p9c9m6t6nlmrgsmdzb3bdx35qgncw1"30
TXT"openai-domain-verification=dv-ZCopDcdzPBGIbAWwovdzvUJq"30
TXT"slack-domain-verification=6WiIajKCjRiZZiZTIU0HKdGBiLE9arHx9ZSYKCLW"30
TXT"v=spf1 include:spf.mrgreen.com include:carmamail.com include:mail.zendesk.com include:mxsmtp.sendpulse.com include:rnmk.com include:spf.mandrillapp.com include:spf.protection.outlook.com -all"30

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), MX (2m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1d; resolvers may use either.
    #32
  • ✓ 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