x2o.be

Checked 22 October 2026, 07:30 UTC · via 8.8.8.8
!Passed with warnings
21 passed 2 warnings 0 failed 6 info

Registration

info

.be country-code

Found

TLD
.be (country-code)
ICANN policies apply
no

Checks

  • i
    .be is a country-code TLD (ccTLD)
    Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.
    #1
  • ✓ TLD delegated and signed #2
    .be is delegated in the root zone and DNSSEC-signed.
  • i
    Registration data not available
    No registration data via RDAP: the registry of .be offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.
    #3

Delegation

info

cory.ns.cloudflare.com, serenity.ns.cloudflare.com

Found

Parent zone
be
Delegation from
a.nsset.be (194.0.6.1)
NS at the parent
cory.ns.cloudflare.com, serenity.ns.cloudflare.com
NS in the zone
cory.ns.cloudflare.com, serenity.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
cory.ns.cloudflare.com172.64.33.93 108.162.193.93 173.245.59.93 2606:4700:58::adf5:3b5d 2a06:98c1:50::ac40:215d 2803:f800:50::6ca2:c15dAS13335 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., US-
serenity.ns.cloudflare.com108.162.194.108 162.159.38.108 172.64.34.108 2606:4700:50::a29f:266c 2a06:98c1:50::ac40:226c 2803:f800:50::6ca2:c26cAS13335 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., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: cory.ns.cloudflare.com, serenity.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
cory.ns.cloudflare.com 172.64.33.93NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
cory.ns.cloudflare.com 108.162.193.93NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
cory.ns.cloudflare.com 173.245.59.93NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
cory.ns.cloudflare.com 2606:4700:58::adf5:3b5dNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
cory.ns.cloudflare.com 2a06:98c1:50::ac40:215dNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
cory.ns.cloudflare.com 2803:f800:50::6ca2:c15dNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
serenity.ns.cloudflare.com 108.162.194.108NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
serenity.ns.cloudflare.com 162.159.38.108NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
serenity.ns.cloudflare.com 172.64.34.108NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
serenity.ns.cloudflare.com 2606:4700:50::a29f:266cNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
serenity.ns.cloudflare.com 2a06:98c1:50::ac40:226cNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
serenity.ns.cloudflare.com 2803:f800:50::6ca2:c26cNOERROR, 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: cory.ns.cloudflare.com: "2026.10.2"; serenity.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 2417460859 · primary cory.ns.cloudflare.com

Found

Primary (MNAME)
cory.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417460859
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
cory.ns.cloudflare.com (172.64.33.93)2417460859
cory.ns.cloudflare.com (108.162.193.93)2417460859
cory.ns.cloudflare.com (173.245.59.93)2417460859
cory.ns.cloudflare.com (2606:4700:58::adf5:3b5d)2417460859
cory.ns.cloudflare.com (2a06:98c1:50::ac40:215d)2417460859
cory.ns.cloudflare.com (2803:f800:50::6ca2:c15d)2417460859
serenity.ns.cloudflare.com (108.162.194.108)2417460859
serenity.ns.cloudflare.com (162.159.38.108)2417460859
serenity.ns.cloudflare.com (172.64.34.108)2417460859
serenity.ns.cloudflare.com (2606:4700:50::a29f:266c)2417460859
serenity.ns.cloudflare.com (2a06:98c1:50::ac40:226c)2417460859
serenity.ns.cloudflare.com (2803:f800:50::6ca2:c26c)2417460859

Checks

  • ✓ Serial 2417460859 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 cory.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 2417460859 is a Unix timestamp (2046-08-09 20:54 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

17 records at the apex

Found

Read from
172.64.33.93:53
TypeValueTTL
SOAcory.ns.cloudflare.com. dns.cloudflare.com. 2417460859 10000 2400 604800 18001800
NScory.ns.cloudflare.com.86400
NSserenity.ns.cloudflare.com.86400
A104.18.28.66300
A104.18.29.66300
AAAA2606:4700::6812:1c42300
AAAA2606:4700::6812:1d42300
MX0 x2o-be.mail.protection.outlook.com.300
TXT"YfjWznkchSJe3PUnZDPtJEkAJBzu7azq"300
TXT"atlassian-domain-verification=3mKcRlWGXqCZCLHuSzLRLOMoEULqu7Os2aqzw3w/Z9l3Ly51aXxY35ZGszpAvwBM"300
TXT"autodesk-domain-verification=-oIpaVAICwKO2xthAjwV"300
TXT"facebook-domain-verification=0dpv7rh56a6wp058nst0vvdkwk4i2v"300
TXT"google-site-verification=1SXWgrDQo17sFChw4En69_uNPLO3SFqAi7Qh-zcyQW0"300
TXT"google-site-verification=96C8r_MpthtOAEpxdPU8pWyWFH506gILD_uveHkcFY8"300
TXT"pinterest-site-verification=35557f006afc91fc4313f29594dff6df"300
TXT"v0rhc2mn50rbv1qjg3n8kqv24e"300
TXT"v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:mail.zendesk.com include:spf.mtasv.net -all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, NS 1d.
  • ✓ 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