blaetter.de

Checked 21 October 2026, 21:48 UTC · via 8.8.8.8
!Passed with warnings
24 passed 1 warning 0 failed 4 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, 5 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns.inwx.de 2001:67c:1bc::104NOERROR, 5 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns2.inwx.de 176.97.158.104NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
ns2.inwx.de 2001:67c:10b8::104NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
ns3.inwx.eu 45.87.158.53NOERROR, 15 ms, authoritativenoyes / yesrefusedINWX AXFR Server
ns3.inwx.eu 2a02:d500::53NOERROR, 15 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

pass

serial 2023122100 · primary ns.inwx.de

Found

Primary (MNAME)
ns.inwx.de
Contact (RNAME)
hostmaster.inwx.de
Serial
2023122100
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns.inwx.de (192.174.68.104)2023122100
ns.inwx.de (2001:67c:1bc::104)2023122100
ns2.inwx.de (176.97.158.104)2023122100
ns2.inwx.de (2001:67c:10b8::104)2023122100
ns3.inwx.eu (45.87.158.53)2023122100
ns3.inwx.eu (2a02:d500::53)2023122100

Checks

  • ✓ Serial 2023122100 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.inwx.de is one of the listed nameservers.
  • ✓ Contact hostmaster@inwx.de #25
    The SOA RNAME hostmaster.inwx.de means hostmaster@inwx.de.
  • ✓ Date-based serial #26
    The serial 2023122100 follows the YYYYMMDDnn convention (2023-12-21).

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

14 records at the apex

Found

Read from
192.174.68.104:53
TypeValueTTL
SOAns.inwx.de. hostmaster.inwx.de. 2023122100 10800 3600 604800 360086400
NSns.inwx.de.86400
NSns2.inwx.de.86400
NSns3.inwx.eu.86400
A78.47.204.1023600
AAAA2a01:4f8:c01f:e::13600
MX10 mx1.heinlein-support.de.3600
MX20 mx2.heinlein-support.de.3600
MX30 mx3.heinlein-support.de.3600
TXT"MS=ms92485269"3600
TXT"facebook-domain-verification=4aas5vzpvn8ln1bym3ktree461tfyo"3600
TXT"google-site-verification=3nKDy4A4BGfuafnY2_AppAtoKMPc26ppNZU8KIznUgc"3600
TXT"v=spf1 a mx ip4:78.47.204.102 ip6:2a01:4f8:c01f:e::1 include:jpberlin.de ~all"3600
CAA128 issue "letsencrypt.org"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1h, NS 1d.
  • ✓ 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: letsencrypt.org.