wdr2.de

Checked 22 October 2026, 01:00 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 4 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

info

dnsext02.wdr.de, dnsext03.wdr.de, pdns02.domaincontrol.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dnsext02.wdr.de, dnsext03.wdr.de, pdns02.domaincontrol.com
NS in the zone
dnsext02.wdr.de, dnsext03.wdr.de, pdns02.domaincontrol.com
NameserverAddressesNetwork (AS)Glue
dnsext02.wdr.de149.219.215.10AS8303 WDR-AS - Westdeutscher Rundfunk Koln, DE149.219.215.10
dnsext03.wdr.de149.219.215.11AS8303 WDR-AS - Westdeutscher Rundfunk Koln, DE149.219.215.11
pdns02.domaincontrol.com173.201.78.50 2603:5:22e0::32AS44273 GODADDY-DNS - Host Europe GmbH, DE AS44273 GODADDY-DNS - Host Europe GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to dnsext02.wdr.de, dnsext03.wdr.de, pdns02.domaincontrol.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 2 IPv4 /24s and 1 IPv6 /48.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS44273 (GODADDY-DNS - Host Europe GmbH, DE): 2 addresses; AS8303 (WDR-AS - Westdeutscher Rundfunk Koln, DE): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .de.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: dnsext02.wdr.de, dnsext03.wdr.de.
    #13

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dnsext02.wdr.de 149.219.215.10NOERROR, 8 ms, authoritativenoyes / yesrefusedDNS 6.4 Build 22
dnsext03.wdr.de 149.219.215.11NOERROR, 8 ms, authoritativenoyes / yesrefusedDNS 6.4 Build 22
pdns02.domaincontrol.com 173.201.78.50NOERROR, 3 ms, authoritativenoyes / yesrefused-
pdns02.domaincontrol.com 2603:5:22e0::32NOERROR, 3 ms, authoritativenoyes / yesrefused-

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: dnsext02.wdr.de: "DNS 6.4 Build 22"; dnsext03.wdr.de: "DNS 6.4 Build 22". 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

warn

serial 329 · primary dnsext02.wdr.de

Found

Primary (MNAME)
dnsext02.wdr.de
Contact (RNAME)
hostmaster.wdr.de
Serial
329
Refresh / retry
21600 s / 7200 s
Expire
2419200 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dnsext02.wdr.de (149.219.215.10)329
dnsext03.wdr.de (149.219.215.11)313
pdns02.domaincontrol.com (173.201.78.50)329
pdns02.domaincontrol.com (2603:5:22e0::32)329

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 313 on dnsext03.wdr.de (149.219.215.11); 329 on dnsext02.wdr.de (149.219.215.10), pdns02.domaincontrol.com (173.201.78.50), pdns02.domaincontrol.com (2603:5:22e0::32). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • ✓ Timers within recommendations #23
    SOA refresh 6h, retry 2h, expire 28d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dnsext02.wdr.de is one of the listed nameservers.
  • ✓ Contact hostmaster@wdr.de #25
    The SOA RNAME hostmaster.wdr.de means hostmaster@wdr.de.
  • ✓ Counter serial #26
    The serial 329 is a plain counter.

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

8 records at the apex

Found

Read from
149.219.215.10:53
TypeValueTTL
SOAdnsext02.wdr.de. hostmaster.wdr.de. 329 21600 7200 2419200 360086400
NSpdns02.domaincontrol.com.300
NSdnsext02.wdr.de.300
NSdnsext03.wdr.de.300
A149.219.208.53300
TXT"_b1xqfy2kygpdoirrp2aajxy1hqtab2o"3600
TXT"v=spf1 mx include:spf.wdr.de ip4:194.76.107.16 ip4:194.76.107.21 ip4:78.46.79.47 -all"3600
TXT"facebook-domain-verification=kvt8ucrur21egmvxj0oekkq1aa5mll"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, NS 5m. The NS TTL at the parent is 1d and in the zone 5m; 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.
  • 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