dena.de

Checked 21 October 2026, 22:13 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 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

ns5.sec-provider.de, ns6.sec-provider.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns5.sec-provider.de, ns6.sec-provider.de
NS in the zone
ns5.sec-provider.de, ns6.sec-provider.de
NameserverAddressesNetwork (AS)Glue
ns5.sec-provider.de194.45.33.133 2001:67c:265c:23f::12AS24861 PALLAS-AS - SITS Deutschland GmbH, DE AS24861 PALLAS-AS - SITS Deutschland GmbH, DE-
ns6.sec-provider.de88.215.197.5 2001:14c0:1001:1::5AS8520 DUNKEL - SITS Deutschland GmbH, DE AS8520 DUNKEL - SITS Deutschland GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns5.sec-provider.de, ns6.sec-provider.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: AS24861 (PALLAS-AS - SITS Deutschland GmbH, DE): 2 addresses; AS8520 (DUNKEL - SITS Deutschland 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
ns5.sec-provider.de 194.45.33.133NOERROR, 7 ms, authoritativenoyes / norefused-
ns5.sec-provider.de 2001:67c:265c:23f::12NOERROR, 7 ms, authoritativenoyes / norefused-
ns6.sec-provider.de 88.215.197.5NOERROR, 7 ms, authoritativenoyes / norefused-
ns6.sec-provider.de 2001:14c0:1001:1::5NOERROR, 5 ms, authoritativenoyes / norefused-

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.
  • ✓ 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.
  • !
    No EDNS
    These nameservers don't support EDNS(0), needed for DNSSEC and answers larger than 512 bytes: ns5.sec-provider.de (194.45.33.133), ns5.sec-provider.de (2001:67c:265c:23f::12), ns6.sec-provider.de (88.215.197.5), ns6.sec-provider.de (2001:14c0:1001:1::5).
    #20
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2026101601 · primary ns6.sec-provider.de

Found

Primary (MNAME)
ns6.sec-provider.de
Contact (RNAME)
hostmaster.sec-provider.de
Serial
2026101601
Refresh / retry
7200 s / 1800 s
Expire
2419200 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns5.sec-provider.de (194.45.33.133)2026101601
ns5.sec-provider.de (2001:67c:265c:23f::12)2026101601
ns6.sec-provider.de (88.215.197.5)2026101601
ns6.sec-provider.de (2001:14c0:1001:1::5)2026101601

Checks

  • ✓ Serial 2026101601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 30m, expire 28d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns6.sec-provider.de is one of the listed nameservers.
  • ✓ Contact hostmaster@sec-provider.de #25
    The SOA RNAME hostmaster.sec-provider.de means hostmaster@sec-provider.de.
  • ✓ Date-based serial #26
    The serial 2026101601 follows the YYYYMMDDnn convention (2026-10-16).

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

14 records at the apex

Found

Read from
194.45.33.133:53
TypeValueTTL
SOAns6.sec-provider.de. hostmaster.sec-provider.de. 2026101601 7200 1800 2419200 360086400
NSns6.sec-provider.de.86400
NSns5.sec-provider.de.86400
A88.215.207.4160
MX100 mail.dena.de.60
TXT"MS=B562B568DE5F107EC4DB1BA122B037364925CAB6"600
TXT"v=spf1 ip4:217.110.184.149 ip4:194.29.226.42 ip4:88.215.207.124 include:spf.pallas-security.com include:spf.sec-provider.de inc" "lude:spf.nl2go.com include:spf.protection.outlook.com include:_spf.zimpel.de -all"600
TXT"google-site-verification=ukZuNY_oMmJnRUMMMbZ7udPweEXAu3-LlfeojCR6yzc"600
TXT"ZOOM_verify_f6ajRrrRSjaYBK8TQFGSEA"600
TXT"cisco-ci-domain-verification=c852c68bf6d4cce7abed556a146450283521f7d5f26297d5307e6d74a7d7217"600
TXT"have-i-been-pwned-verification=9075731676c10a4cf4c01874370fcf82"600
TXT"nitro-verification-code=LTc0MjM3MzIwOTUyNjA5MTk0OTg="600
TXT"brevo-code:d3deb8165e18e1b2b857aa2e3e9c12c4"600
TXT"mistral-domain-verification=db9a2e989b260a1602c0e7b65ca4bb27664b25c2"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), MX (1m). Low TTLs are useful just before a planned change.
    #32
  • ✓ 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