viking.de

Checked 22 October 2026, 00:51 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 warnings 0 failed 5 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

pdns81.ultradns.biz, pdns81.ultradns.com, pdns81.ultradns.net, pdns81.ultradns.org

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
pdns81.ultradns.biz, pdns81.ultradns.com, pdns81.ultradns.net, pdns81.ultradns.org
NS in the zone
pdns81.ultradns.biz, pdns81.ultradns.com, pdns81.ultradns.net, pdns81.ultradns.org
NameserverAddressesNetwork (AS)Glue
pdns81.ultradns.biz156.154.66.81 2610:a1:1015::75AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns81.ultradns.com156.154.64.81 2001:502:f3ff::75AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns81.ultradns.net156.154.65.81 2610:a1:1014::75AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns81.ultradns.org156.154.67.81 2001:502:4612::75AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to pdns81.ultradns.biz, pdns81.ultradns.com, pdns81.ultradns.net, pdns81.ultradns.org.
  • ✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12008 (VERCARA - Vercara, LLC, US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .biz, .com, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
pdns81.ultradns.biz 156.154.66.81NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns81.ultradns.biz 2610:a1:1015::75NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns81.ultradns.com 156.154.64.81NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns81.ultradns.com 2001:502:f3ff::75NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns81.ultradns.net 156.154.65.81NOERROR, 5 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns81.ultradns.net 2610:a1:1014::75NOERROR, 5 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns81.ultradns.org 156.154.67.81NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns81.ultradns.org 2001:502:4612::75NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 8 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: pdns81.ultradns.biz: "UltraDNS Nameserver"; pdns81.ultradns.com: "UltraDNS Nameserver"; pdns81.ultradns.net: "UltraDNS Nameserver"; pdns81.ultradns.org: "UltraDNS Nameserver".
    #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 2011102462 · primary pdns81.ultradns.com

Found

Primary (MNAME)
pdns81.ultradns.com
Contact (RNAME)
dnstech-europe.officedepot.com
Serial
2011102462
Refresh / retry
10800 s / 3600 s
Expire
691200 s
Negative TTL
86399 s

Serial per nameserver

NameserverSerial
pdns81.ultradns.biz (156.154.66.81)2011102462
pdns81.ultradns.biz (2610:a1:1015::75)2011102462
pdns81.ultradns.com (156.154.64.81)2011102462
pdns81.ultradns.com (2001:502:f3ff::75)2011102462
pdns81.ultradns.net (156.154.65.81)2011102462
pdns81.ultradns.net (2610:a1:1014::75)2011102462
pdns81.ultradns.org (156.154.67.81)2011102462
pdns81.ultradns.org (2001:502:4612::75)2011102462

Checks

  • ✓ Serial 2011102462 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 8d, negative TTL 23h59m59s.
  • ✓ Primary is a public nameserver #24
    The primary nameserver pdns81.ultradns.com is one of the listed nameservers.
  • ✓ Contact dnstech-europe@officedepot.com #25
    The SOA RNAME dnstech-europe.officedepot.com means dnstech-europe@officedepot.com.
  • ✓ Date-based serial #26
    The serial 2011102462 follows the YYYYMMDDnn convention (2011-10-24).

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

warn

22 records at the apex

Found

Read from
156.154.66.81:53
TypeValueTTL
SOApdns81.ultradns.com. dnstech-europe.officedepot.com. 2011102462 10800 3600 691200 8639986400
NSpdns81.ultradns.biz.86400
NSpdns81.ultradns.com.86400
NSpdns81.ultradns.net.86400
NSpdns81.ultradns.org.86400
A23.36.162.21012
A23.36.162.20512
AAAA2a02:26f0:ab00::214:8ec217
AAAA2a02:26f0:ab00::214:8e1817
MX0 viking-de.mail.protection.outlook.com.86400
TXT"MS=ms99434732"3600
TXT"z4mjq2wvy1w092fdrz16fbgvdbvnkhyw"3600
TXT"zrhfxvr807yrw4g41mr1019smt3b1tsj"3600
TXT"facebook-domain-verification=c2d2s57csdcbmksm1s125nq2pi7lsw"3600
TXT"v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all"3600
TXT"google-site-verification=1rDaxsazoNNjGR5Uuqg_hWK8H5RHYtCjUOlgn54x9s0"3600
TXT"google-site-verification=f0pE3oWN8IVzn0aeZxUs-FBncRloYQ09EIuJGlfpTOU"3600
TXT"_globalsign-domain-verification=R1bvWDvJUF1gpXlmc7Q3deFwpZciil5dpJR4t-a8XM"3600
CAA0 iodef "mailto:report-abuse@globalsign.com"86400
CAA0 issue "comodoca.com"86400
CAA0 issue "digicert.com"86400
CAA0 issue "globalsign.com"86400

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (12s), AAAA (17s). Low TTLs are useful just before a planned change.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, globalsign.com.