nd-aktuell.de

Checked 21 October 2026, 23:31 UTC · via 8.8.8.8
!Passed with warnings
21 passed 2 warnings 0 failed 6 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

dns0.warenform.de, dns1.warenform.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns0.warenform.de, dns1.warenform.de
NS in the zone
dns0.warenform.de, dns1.warenform.de
NameserverAddressesNetwork (AS)Glue
dns0.warenform.de83.223.86.113 2a01:30:0:13:2fe:f9ff:fe23:24c4AS8875 SINMA-ASN - sinma GmbH, DE AS8875 SINMA-ASN - sinma GmbH, DE-
dns1.warenform.de83.223.84.20 2a01:30:d000:6::11AS8875 SINMA-ASN - sinma GmbH, DE AS8875 SINMA-ASN - sinma GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns0.warenform.de, dns1.warenform.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.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS8875 (SINMA-ASN - sinma GmbH, DE): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • 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
dns0.warenform.de 83.223.86.113NOERROR, 11 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
dns0.warenform.de 2a01:30:0:13:2fe:f9ff:fe23:24c4NOERROR, 13 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
dns1.warenform.de 83.223.84.20NOERROR, 11 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
dns1.warenform.de 2a01:30:d000:6::11NOERROR, 13 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian

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: dns0.warenform.de: "9.20.29-1~deb13u1-Debian"; dns1.warenform.de: "9.20.29-1~deb13u1-Debian". 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

pass

serial 2026093001 · primary dns1.warenform.de

Found

Primary (MNAME)
dns1.warenform.de
Contact (RNAME)
admin.warenform.net
Serial
2026093001
Refresh / retry
14400 s / 3600 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
dns0.warenform.de (83.223.86.113)2026093001
dns0.warenform.de (2a01:30:0:13:2fe:f9ff:fe23:24c4)2026093001
dns1.warenform.de (83.223.84.20)2026093001
dns1.warenform.de (2a01:30:d000:6::11)2026093001

Checks

  • ✓ Serial 2026093001 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.warenform.de is one of the listed nameservers.
  • ✓ Contact admin@warenform.net #25
    The SOA RNAME admin.warenform.net means admin@warenform.net.
  • ✓ Date-based serial #26
    The serial 2026093001 follows the YYYYMMDDnn convention (2026-09-30).

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

11 records at the apex

Found

Read from
83.223.86.113:53
TypeValueTTL
SOAdns1.warenform.de. admin.warenform.net. 2026093001 14400 3600 604800 8640086400
NSdns0.warenform.de.43200
NSdns1.warenform.de.43200
A83.223.86.50360
AAAA2a01:30:0:505:2f4:75ff:fe1e:376f360
MX10 mx.warenform.de.43200
TXT"v=spf1 a mx ~all"43200
TXT"vvu3ng3o9n64ua37s7rtbrd0eh"43200
TXT"google-site-verification=Mzz33UE_VmDdXwnOw-oPIRocy-EXVYHH7gGduE7X29g"43200
TXT"vra51gnfqnvgfg2m38li65r8s2"43200
TXT"google-site-verification=-FILveIk8RMa5YlCxH6sL1Z8cNxw5CKjqX3N_lA38d8"43200

Checks

  • ✓ TTLs within range #32
    TTLs: A 6m, AAAA 6m, MX 12h, NS 12h. The NS TTL at the parent is 1d and in the zone 12h; 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