merkaartor.be

Checked 22 October 2026, 06:50 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 warnings 0 failed 5 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

nameserver.yuio.de, nsb4.schlundtech.de

Found

Parent zone
be
Delegation from
a.nsset.be (194.0.6.1)
NS at the parent
nameserver.yuio.de, nsb4.schlundtech.de
NS in the zone
nameserver.yuio.de, nsb4.schlundtech.de
NameserverAddressesNetwork (AS)Glue
nameserver.yuio.de159.69.18.144 2a01:4f8:1c1c:39c1::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
nsb4.schlundtech.de185.132.35.227 2607:f1c0:fe:53:185:132:35:227AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: nameserver.yuio.de, nsb4.schlundtech.de.
    #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 2 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 addresses.
  • i
    All nameserver names under .de
    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

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
nameserver.yuio.de 159.69.18.144NOERROR, 2 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.0.4 (built Apr 26 2026 00:00:00 by mockbuild@localhost)
nameserver.yuio.de 2a01:4f8:1c1c:39c1::1NOERROR, 2 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.0.4 (built Apr 26 2026 00:00:00 by mockbuild@localhost)
nsb4.schlundtech.de 185.132.35.227NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
nsb4.schlundtech.de 2607:f1c0:fe:53:185:132:35:227NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

Checks

  • ✓ All respond #14
    All 4 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: nameserver.yuio.de: "PowerDNS Authoritative Server 5.0.4 (built Apr 26 2026 00:00:00 by mockbuild@localhost)". 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 2018060301 · primary nameserver.yuio.de

Found

Primary (MNAME)
nameserver.yuio.de
Contact (RNAME)
hostmaster.yuio.de
Serial
2018060301
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
nameserver.yuio.de (159.69.18.144)2018060301
nameserver.yuio.de (2a01:4f8:1c1c:39c1::1)2018060301
nsb4.schlundtech.de (185.132.35.227)2018060301
nsb4.schlundtech.de (2607:f1c0:fe:53:185:132:35:227)2018060301

Checks

  • ✓ Serial 2018060301 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver nameserver.yuio.de is one of the listed nameservers.
  • ✓ Contact hostmaster@yuio.de #25
    The SOA RNAME hostmaster.yuio.de means hostmaster@yuio.de.
  • ✓ Date-based serial #26
    The serial 2018060301 follows the YYYYMMDDnn convention (2018-06-03).

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

5 records at the apex

Found

Read from
159.69.18.144:53
TypeValueTTL
SOAnameserver.yuio.de. hostmaster.yuio.de. 2018060301 10800 3600 604800 360086400
NSnameserver.yuio.de.86400
NSnsb4.schlundtech.de.86400
A37.205.14.21186400
AAAA2a03:3b40:fe:12a::186400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, AAAA 1d, 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