dekra-akademie.de

Checked 21 October 2026, 22:12 UTC · via 8.8.8.8
!Passed with warnings
20 passed 2 warnings 0 failed 7 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

warn

auth04.ns.de.uu.net, auth54.ns.de.uu.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
auth04.ns.de.uu.net, auth54.ns.de.uu.net
NS in the zone
auth04.ns.de.uu.net, auth40.ns.uu.net, auth54.ns.de.uu.net
NameserverAddressesNetwork (AS)Glue
auth04.ns.de.uu.net192.76.144.17 2001:600:1c0:e000::35:9AS702 UUNET - Verizon Business, US AS702 UUNET - Verizon Business, US-
auth40.ns.uu.net (zone only)198.6.1.18AS701 UUNET - Verizon Business, US-
auth54.ns.de.uu.net194.128.171.100 2001:600:1c0:e001::35:9AS702 UUNET - Verizon Business, US AS702 UUNET - Verizon Business, US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: auth04.ns.de.uu.net, auth54.ns.de.uu.net.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: auth40.ns.uu.net. auth04.ns.de.uu.net, auth40.ns.uu.net, auth54.ns.de.uu.net report NS auth04.ns.de.uu.net auth40.ns.uu.net auth54.ns.de.uu.net.
    #7
  • ✓ 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.
  • i
    One address family in one network
    all IPv6 addresses are in 2001:600:1c0::/48, while the other address family is spread over several networks.
    #10
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS701 (UUNET - Verizon Business, US): 1 address; AS702 (UUNET - Verizon Business, US): 4 addresses.
  • i
    All nameserver names under .net
    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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: auth40.ns.uu.net.
    #13

Nameservers

pass

5 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
auth04.ns.de.uu.net 192.76.144.17NOERROR, 8 ms, authoritativenoyes / yesrefused-
auth04.ns.de.uu.net 2001:600:1c0:e000::35:9NOERROR, 8 ms, authoritativenoyes / yesrefused-
auth40.ns.uu.net 198.6.1.18NOERROR, 100 ms, authoritativenoyes / yesrefused-
auth54.ns.de.uu.net 194.128.171.100NOERROR, 19 ms, authoritativenoyes / yesrefused-
auth54.ns.de.uu.net 2001:600:1c0:e001::35:9NOERROR, 16 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 5 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 2026101201 · primary auth04.ns.de.uu.net

Found

Primary (MNAME)
auth04.ns.de.uu.net
Contact (RNAME)
hostmaster.de.uu.net
Serial
2026101201
Refresh / retry
28800 s / 7200 s
Expire
2678400 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
auth04.ns.de.uu.net (192.76.144.17)2026101201
auth04.ns.de.uu.net (2001:600:1c0:e000::35:9)2026101201
auth40.ns.uu.net (198.6.1.18)2026101201
auth54.ns.de.uu.net (194.128.171.100)2026101201
auth54.ns.de.uu.net (2001:600:1c0:e001::35:9)2026101201

Checks

  • ✓ Serial 2026101201 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 31d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver auth04.ns.de.uu.net is one of the listed nameservers.
  • ✓ Contact hostmaster@de.uu.net #25
    The SOA RNAME hostmaster.de.uu.net means hostmaster@de.uu.net.
  • ✓ Date-based serial #26
    The serial 2026101201 follows the YYYYMMDDnn convention (2026-10-12).

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

9 records at the apex

Found

Read from
192.76.144.17:53
TypeValueTTL
SOAauth04.ns.de.uu.net. hostmaster.de.uu.net. 2026101201 28800 7200 2678400 180086400
NSauth04.ns.de.uu.net.86400
NSauth40.ns.uu.net.86400
NSauth54.ns.de.uu.net.86400
A91.205.36.14600
TXT"google-site-verification=jJ-8VDyeREqx4h_X5iHAEqRaYSnApX5kxr12BzPW-po"86400
TXT"v=spf1 include:antispameurope.com include:spf.protection.outlook.com ~all"86400
TXT"_l6llv0ukh4bd40cwbc8t45rq1fr7wv2"86400
TXT"Generated by Verizon DNSTool V 2.9"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, 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