saarbruecken.de

Checked 22 October 2026, 00:01 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

warn

dns1.internett.de, dns2.internett.de, dns3.internett.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns1.internett.de, dns2.internett.de, dns3.internett.de
NS in the zone
dns1.internett.de, dns2.internett.de, dns3.internett.de
NameserverAddressesNetwork (AS)Glue
dns1.internett.de82.192.192.7AS29510 INTERNETT-AS - internett GmbH, DE82.192.192.7
dns2.internett.de82.192.193.7AS29510 INTERNETT-AS - internett GmbH, DE82.192.193.7
dns3.internett.de212.88.131.196AS9063 SAARGATE-AS - VSE NET GmbH, DE212.88.131.196

Checks

  • ✓ 3 nameservers #6
    Delegated to dns1.internett.de, dns2.internett.de, dns3.internett.de.
  • ✓ 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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS29510 (INTERNETT-AS - internett GmbH, DE): 2 addresses; AS9063 (SAARGATE-AS - VSE NET GmbH, DE): 1 address.
  • 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.internett.de 82.192.192.7NOERROR, 8 ms, authoritativenoyes / yesrefused-
dns2.internett.de 82.192.193.7NOERROR, 8 ms, authoritativenoyes / yesrefused-
dns3.internett.de 212.88.131.196NOERROR, 8 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 3 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 2026100701 · primary dns1.internett.de

Found

Primary (MNAME)
dns1.internett.de
Contact (RNAME)
hostmaster.internett.de
Serial
2026100701
Refresh / retry
10000 s / 1800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns1.internett.de (82.192.192.7)2026100701
dns2.internett.de (82.192.193.7)2026100701
dns3.internett.de (212.88.131.196)2026100701

Checks

  • ✓ Serial 2026100701 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 30m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.internett.de is one of the listed nameservers.
  • ✓ Contact hostmaster@internett.de #25
    The SOA RNAME hostmaster.internett.de means hostmaster@internett.de.
  • ✓ Date-based serial #26
    The serial 2026100701 follows the YYYYMMDDnn convention (2026-10-07).

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

10 records at the apex

Found

Read from
82.192.192.7:53
TypeValueTTL
SOAdns1.internett.de. hostmaster.internett.de. 2026100701 10000 1800 1209600 36003600
NSdns3.internett.de.3600
NSdns2.internett.de.3600
NSdns1.internett.de.3600
A185.104.207.8260
MX60 bl02-05.saarbruecken.de.3600
MX50 bl02-06.saarbruecken.de.3600
TXT"v=spf1 ip4:212.18.200.96/27 ip4:212.18.199.96/27 include:spf.hgcloud.de include:ekom21.de -all"60
TXT"MS=CB301229A798A418838CB7769859A41E7EE56EE7"3600
TXT"globalsign-domain-verification=EC70GPopqx19Q3XQvuODo0ii4l6pl8gu1-4A7aal0Y"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
    #32
  • ✓ 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
  • 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