waltrop.de

Checked 22 October 2026, 01:00 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

pass

ns.inwx.de, ns2.inwx.de, ns3.inwx.eu

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.inwx.de, ns2.inwx.de, ns3.inwx.eu
NS in the zone
ns.inwx.de, ns2.inwx.de, ns3.inwx.eu
NameserverAddressesNetwork (AS)Glue
ns.inwx.de192.174.68.104 2001:67c:1bc::104AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns2.inwx.de176.97.158.104 2001:67c:10b8::104AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns3.inwx.eu45.87.158.53 2a02:d500::53AS48596 INWX - InterNetworX Management GmbH, DE AS48596 INWX - InterNetworX Management GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.inwx.de, ns2.inwx.de, ns3.inwx.eu.
  • ✓ 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 3 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 4 addresses; AS48596 (INWX - InterNetworX Management GmbH, DE): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .eu.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.inwx.de 192.174.68.104NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns.inwx.de 2001:67c:1bc::104NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns2.inwx.de 176.97.158.104NOERROR, 14 ms, authoritativenoyes / yesrefusedreg-wie1
ns2.inwx.de 2001:67c:10b8::104NOERROR, 14 ms, authoritativenoyes / yesrefusedreg-wie1
ns3.inwx.eu 45.87.158.53NOERROR, 471 ms, authoritativenoyes / yesrefusedINWX AXFR Server
ns3.inwx.eu 2a02:d500::53NOERROR, 398 ms, authoritativenoyes / yesrefusedINWX AXFR Server

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns.inwx.de: "RcodeZero DNS"; ns2.inwx.de: "reg-wie1"; ns3.inwx.eu: "INWX AXFR Server".
    #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

info

serial 2026092501 · primary dns1.gkd-re.net

Found

Primary (MNAME)
dns1.gkd-re.net
Contact (RNAME)
internetservice.gkd-re.de
Serial
2026092501
Refresh / retry
36000 s / 10800 s
Expire
2592000 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns.inwx.de (192.174.68.104)2026092501
ns.inwx.de (2001:67c:1bc::104)2026092501
ns2.inwx.de (176.97.158.104)2026092501
ns2.inwx.de (2001:67c:10b8::104)2026092501
ns3.inwx.eu (45.87.158.53)2026092501
ns3.inwx.eu (2a02:d500::53)2026092501

Checks

  • ✓ Serial 2026092501 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 10h, retry 3h, expire 30d, negative TTL 1d.
  • i
    Hidden master
    The primary nameserver dns1.gkd-re.net is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact internetservice@gkd-re.de #25
    The SOA RNAME internetservice.gkd-re.de means internetservice@gkd-re.de.
  • ✓ Date-based serial #26
    The serial 2026092501 follows the YYYYMMDDnn convention (2026-09-25).

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

24 records at the apex

Found

Read from
192.174.68.104:53
TypeValueTTL
SOAdns1.gkd-re.net. internetservice.gkd-re.de. 2026092501 36000 10800 2592000 8640021600
NSns.inwx.de.21600
NSns2.inwx.de.21600
NSns3.inwx.eu.21600
A194.31.27.2260
MX10 mx01.gkd-re.net.60
MX10 mx02.gkd-re.net.60
TXT"KST:435505"60
TXT"1pnbvdlpz919vbk5bd8yzsywcmngslbh"60
TXT"9pb6696t62txjz971rnr2w53lbt88xyt"60
TXT"_2dnu6gc2p6ajps8pq658m1ndcjdusri"60
TXT"_544q6aqiwbzl7zqu25p5oinfhmd09y0"60
TXT"_5nkrv6b0brfkuh29nfzn24n8xe6cybs"60
TXT"_7t3zqddmvua7sw2jyv7wvhzza5qedby"60
TXT"_b9faxin09vgckf70zazk71rlgpulpom"60
TXT"_bz990kedjmpoit0v21bt1bc0v18i908"60
TXT"_ks1kcddiebcpylwprpep8274sf83nef"60
TXT"_ogyvn1u5h7pd4dsx3wbdr70y601ryfa"60
TXT"_q9a4ttejcxtz8x0cqzf6czlsuwzhmlp"60
TXT"_umh9x35ouj0kzo92homgr1qf0x0ndgi"60
TXT"_vuvjc4hlbhcxffqxnt22hy3bli0a33w"60
TXT"gzn02wt7s0qgy84q67065xdpcrk4yr68"60
TXT"v=spf1 ip4:194.31.16.0/20 ip6:2a02:100e:6b80::/48 ~all"60
TXT"2021101300512132iw8cqocrvdaoigs37206f2tfwordmchvr2lpwsmtvqvb2bf3"60

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. The NS TTL at the parent is 1d and in the zone 6h; resolvers may use either.
    #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