wbstraining.de

Checked 22 October 2026, 01:00 UTC · via 8.8.8.8
!Passed with warnings
26 passed 1 warning 0 failed 2 info

Registration

info

.de country-code

Found

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

Checks

  • i
    .de 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
    .de is delegated in the root zone and DNSSEC-signed.
  • i
    Registration data not available
    No registration data via RDAP: the registry of .de offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.
    #3

Delegation

pass

ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com
NS in the zone
ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com
NameserverAddressesNetwork (AS)Glue
ns1.first-ns.de213.239.242.238 2a01:4f8:0:a101::a:1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
robotns2.second-ns.de213.133.100.103 2a01:4f8:0:1::5ddc:2AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
robotns3.second-ns.com193.47.99.3 2001:67c:192c::add:a3AS12337 NORIS-NETWORK - noris network AG, DE AS12337 NORIS-NETWORK - noris network AG, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com.
  • ✓ 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 3 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12337 (NORIS-NETWORK - noris network AG, DE): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 4 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .de.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.first-ns.de 213.239.242.238NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1.first-ns.de 2a01:4f8:0:a101::a:1NOERROR, 3 ms, authoritativenoyes / yesrefused-
robotns2.second-ns.de 213.133.100.103NOERROR, 0 ms, authoritativenoyes / yesrefused-
robotns2.second-ns.de 2a01:4f8:0:1::5ddc:2NOERROR, 0 ms, authoritativenoyes / yesrefused-
robotns3.second-ns.com 193.47.99.3NOERROR, 6 ms, authoritativenoyes / yesrefused-
robotns3.second-ns.com 2001:67c:192c::add:a3NOERROR, 6 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 6 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 2026102000 · primary ns1.first-ns.de

Found

Primary (MNAME)
ns1.first-ns.de
Contact (RNAME)
dns.hetzner.com
Serial
2026102000
Refresh / retry
14400 s / 1800 s
Expire
2419200 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.first-ns.de (213.239.242.238)2026102000
ns1.first-ns.de (2a01:4f8:0:a101::a:1)2026102000
robotns2.second-ns.de (213.133.100.103)2026102000
robotns2.second-ns.de (2a01:4f8:0:1::5ddc:2)2026102000
robotns3.second-ns.com (193.47.99.3)2026102000
robotns3.second-ns.com (2001:67c:192c::add:a3)2026102000

Checks

  • ✓ Serial 2026102000 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 30m, expire 28d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.first-ns.de is one of the listed nameservers.
  • ✓ Contact dns@hetzner.com #25
    The SOA RNAME dns.hetzner.com means dns@hetzner.com.
  • ✓ Date-based serial #26
    The serial 2026102000 follows the YYYYMMDDnn convention (2026-10-20).

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

20 records at the apex

Found

Read from
213.239.242.238:53
TypeValueTTL
SOAns1.first-ns.de. dns.hetzner.com. 2026102000 14400 1800 2419200 8640086400
NSns1.first-ns.de.86400
NSrobotns2.second-ns.de.86400
NSrobotns3.second-ns.com.86400
A167.235.106.23486400
MX10 mail4.wbstraining.de.300
MX20 mail5.wbstraining.de.300
TXT"Ji8u9BYLdw8quMhksaN4mz7uu8bw8aFA2+ywk0GfhQTXdpgnu3/Wm3QNAHKRbbglhB8holK7TTNssSVuCTR8QA=="300
TXT"MS=69FB246E16D7D1A0EADDDCE453B97E8AEEE2201D"300
TXT"MS=ms83815227"300
TXT"Vq+51tadkcpDgJ9x3gohQV89TUtZIcb20AJCS4l+eJU0Vu7AKzcBzHXpOz1Cg0iLqhX3S4Ww2oCOatwOBi9nfA=="300
TXT"apple-domain-verification=dHVzHfgnOkmtzPvT"300
TXT"google-site-verification=gqzF7IqHH8Vc1hlGQx8WL4eiD2JLbc-RwFqfyZFTuRs"300
TXT"miro-verification=0a8dea75cf468a10718849d1379d49bb507ce7b0"300
TXT"samsung-domain-verification=dbe0eb5a-f7ff-4d75-bf14-08c053c37e24"300
TXT"sophos-domain-verification=3fcb5f6b5227c9de6be283a41a5e2e59d805e187b3d479aeff4a57e2fc1e19db"300
TXT"v=spf1 a mx ip4:217.110.61.32/27 ip4:136.243.77.20 ip4:95.216.247.240 ip4:49.12.113.52 ip4:94.130.172.209 ip4:78.47.126.41 ip4:62.96.109.14 ip4:5.75.212.146 include:wbsecampus.de include:spf.crsend.com include:spf.protection.outlook.com include:marketin" "g.dynamics.com include:spf.etermin.net -all"300
TXT"9dlnl72sg758zgkly7p25s8424hx9b7r"300
CAA0 issuewild "digicert.com"86400
CAA0 issue "digicert.com"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: digicert.com.