zabbix.com

Checked 22 October 2026, 11:42 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · Cloudflare, Inc. · expires 2027-01-25

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Cloudflare, Inc.
Registered
25 January 2002
Last changed
26 December 2025
Expires
25 January 2027
Status
client transfer prohibited
Registry nameservers
ines.ns.cloudflare.com, paul.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 2027-01-25 #3
    The registration is valid until 2027-01-25 (94 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

ines.ns.cloudflare.com, paul.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ines.ns.cloudflare.com, paul.ns.cloudflare.com
NS in the zone
ines.ns.cloudflare.com, paul.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
ines.ns.cloudflare.com172.64.32.164 173.245.58.164 108.162.192.164 2606:4700:50::adf5:3aa4 2a06:98c1:50::ac40:20a4 2803:f800:50::6ca2:c0a4AS13335 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., US108.162.192.164 172.64.32.164 173.245.58.164 2606:4700:50::adf5:3aa4 2803:f800:50::6ca2:c0a4 2a06:98c1:50::ac40:20a4
paul.ns.cloudflare.com172.64.33.135 173.245.59.135 108.162.193.135 2606:4700:58::adf5:3b87 2a06:98c1:50::ac40:2187 2803:f800:50::6ca2:c187AS13335 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., US108.162.193.135 172.64.33.135 173.245.59.135 2606:4700:58::adf5:3b87 2803:f800:50::6ca2:c187 2a06:98c1:50::ac40:2187

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ines.ns.cloudflare.com, paul.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
ines.ns.cloudflare.com 172.64.32.164NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ines.ns.cloudflare.com 173.245.58.164NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ines.ns.cloudflare.com 108.162.192.164NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ines.ns.cloudflare.com 2606:4700:50::adf5:3aa4NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ines.ns.cloudflare.com 2a06:98c1:50::ac40:20a4NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ines.ns.cloudflare.com 2803:f800:50::6ca2:c0a4NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
paul.ns.cloudflare.com 172.64.33.135NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
paul.ns.cloudflare.com 173.245.59.135NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
paul.ns.cloudflare.com 108.162.193.135NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
paul.ns.cloudflare.com 2606:4700:58::adf5:3b87NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
paul.ns.cloudflare.com 2a06:98c1:50::ac40:2187NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
paul.ns.cloudflare.com 2803:f800:50::6ca2:c187NOERROR, 14 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: ines.ns.cloudflare.com: "2026.10.2"; paul.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 2416207965 · primary ines.ns.cloudflare.com

Found

Primary (MNAME)
ines.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2416207965
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ines.ns.cloudflare.com (172.64.32.164)2416207965
ines.ns.cloudflare.com (173.245.58.164)2416207965
ines.ns.cloudflare.com (108.162.192.164)2416207965
ines.ns.cloudflare.com (2606:4700:50::adf5:3aa4)2416207965
ines.ns.cloudflare.com (2a06:98c1:50::ac40:20a4)2416207965
ines.ns.cloudflare.com (2803:f800:50::6ca2:c0a4)2416207965
paul.ns.cloudflare.com (172.64.33.135)2416207965
paul.ns.cloudflare.com (173.245.59.135)2416207965
paul.ns.cloudflare.com (108.162.193.135)2416207965
paul.ns.cloudflare.com (2606:4700:58::adf5:3b87)2416207965
paul.ns.cloudflare.com (2a06:98c1:50::ac40:2187)2416207965
paul.ns.cloudflare.com (2803:f800:50::6ca2:c187)2416207965

Checks

  • ✓ Serial 2416207965 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 ines.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 2416207965 is a Unix timestamp (2046-07-26 08:52 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

pass

34 records at the apex

Found

Read from
172.64.32.164:53
TypeValueTTL
SOAines.ns.cloudflare.com. dns.cloudflare.com. 2416207965 10000 2400 604800 18001800
NSines.ns.cloudflare.com.86400
NSpaul.ns.cloudflare.com.86400
A104.26.7.148300
A104.26.6.148300
A172.67.69.4300
AAAA2606:4700:20::681a:694300
AAAA2606:4700:20::ac43:4504300
AAAA2606:4700:20::681a:794300
MX0 zabbix-com.mail.protection.outlook.com.300
TXT"MS=0F064347AE3FC168815E363F20BF1D19D4FAD991"300
TXT"MS=ms59937689"300
TXT"anthropic-domain-verification-hvz0yy=aHvm3JqTOET0wYhxWhPg6CRiB"300
TXT"apple-domain-verification=JrEbzBRT2IysCxNj"300
TXT"google-site-verification=8UYiyJcfMPtcB_5m9GRsiL6d7y31pB2zLbfOgDiJNTQ"300
TXT"google-site-verification=DHZBN2lMU-LRY957ew3K7n91V3SGZOXRQ3vSjC4sVKM"300
TXT"h1-domain-verification=7A4meJBiG8RXdxrfEeu9JdrKXj3YGck5nZGySfjba7ic1qUA"300
TXT"lw=682ec1d7bfe7091b28241fa1"300
TXT"sending_domain1068182=54fd5eec6a9dc8f51f362cfec814d34877adbccdf9b49c7d53ac989c5cbe860c"300
TXT"v=spf1 mx ip4:80.232.239.26 ip4:195.122.9.66 ip4:195.122.9.71 ip4:195.122.9.72 ip4:195.122.13.66 include:spf.protection.outlook.com include:spf.mandrillapp.com include:_spf.salesforce.com include:mailgun.org -all"300
CAA0 iodef "mailto:dmarc@zabbix.com"300
CAA0 issue "amazon.com"300
CAA0 issue "comodoca.com"300
CAA0 issue "digicert.com; cansignhttpexchanges=yes"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog; cansignhttpexchanges=yes"300
CAA0 issue "sectigo.com"300
CAA0 issue "ssl.com"300
CAA0 issuewild "comodoca.com"300
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"300
CAA0 issuewild "letsencrypt.org"300
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"300
CAA0 issuewild "sectigo.com"300
CAA0 issuewild "ssl.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.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazon.com, comodoca.com, digicert.com, letsencrypt.org, pki.goog, sectigo.com, ssl.com.