mediendienst-integration.de

Checked 21 October 2026, 23:21 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

warn

ns1.octlabs.de, ns2.octlabs.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.octlabs.de, ns2.octlabs.de
NS in the zone
ns1.octlabs.de, ns2.octlabs.de
NameserverAddressesNetwork (AS)Glue
ns1.octlabs.de79.133.54.2AS44066 DE-FIRSTCOLO - firstcolo GmbH, DE79.133.54.2
ns2.octlabs.de79.133.49.178AS44066 DE-FIRSTCOLO - firstcolo GmbH, DE79.133.49.178

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.octlabs.de, ns2.octlabs.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 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS44066 (DE-FIRSTCOLO - firstcolo GmbH, DE): 2 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.octlabs.de 79.133.54.2NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2.octlabs.de 79.133.49.178NOERROR, 3 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 2 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 2026071100 · primary ns1.octlabs.de

Found

Primary (MNAME)
ns1.octlabs.de
Contact (RNAME)
hostmaster.octlabs.de
Serial
2026071100
Refresh / retry
10000 s / 1800 s
Expire
604800 s
Negative TTL
40000 s

Serial per nameserver

NameserverSerial
ns1.octlabs.de (79.133.54.2)2026071100
ns2.octlabs.de (79.133.49.178)2026071100

Checks

  • ✓ Serial 2026071100 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 30m, expire 7d, negative TTL 11h6m40s.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.octlabs.de is one of the listed nameservers.
  • ✓ Contact hostmaster@octlabs.de #25
    The SOA RNAME hostmaster.octlabs.de means hostmaster@octlabs.de.
  • ✓ Date-based serial #26
    The serial 2026071100 follows the YYYYMMDDnn convention (2026-07-11).

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

7 records at the apex

Found

Read from
79.133.54.2:53
TypeValueTTL
SOAns1.octlabs.de. hostmaster.octlabs.de. 2026071100 10000 1800 604800 4000040000
NSns2.octlabs.de.40000
NSns1.octlabs.de.40000
A79.133.54.1440000
MX10 mail.octlabs.de.40000
TXT"v=spf1 mx -all"40000
TXT"VSA DNS SYSTEM 2026.6 REV 3"40000

Checks

  • ✓ TTLs within range #32
    TTLs: A 11h6m40s, MX 11h6m40s, NS 11h6m40s. The NS TTL at the parent is 1d and in the zone 11h6m40s; 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