pro-medienmagazin.de

Checked 21 October 2026, 23:51 UTC · via 8.8.8.8
!Passed with warnings
21 passed 1 warning 0 failed 7 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

ns1.tbits.net, ns2.tbits.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.tbits.net, ns2.tbits.net
NS in the zone
ns1.tbits.net, ns2.tbits.net
NameserverAddressesNetwork (AS)Glue
ns1.tbits.net178.250.224.2 2a00:b260:0:100::d001:1AS51417 TBITS-NET-AS - TBits.net GmbH, DE AS51417 TBITS-NET-AS - TBits.net GmbH, DE-
ns2.tbits.net178.250.225.2 2a00:b260:0:110::d002:1AS51417 TBITS-NET-AS - TBits.net GmbH, DE AS51417 TBITS-NET-AS - TBits.net GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.tbits.net, ns2.tbits.net.
    #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.
  • i
    One address family in one network
    all IPv6 addresses are in 2a00:b260::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS51417 (TBITS-NET-AS - TBits.net 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 .net
    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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.tbits.net 178.250.224.2NOERROR, 12 ms, authoritativenoyes / yesrefusedN/A
ns1.tbits.net 2a00:b260:0:100::d001:1NOERROR, 11 ms, authoritativenoyes / yesrefusedN/A
ns2.tbits.net 178.250.225.2NOERROR, 8 ms, authoritativenoyes / yesrefusedN/A
ns2.tbits.net 2a00:b260:0:110::d002:1NOERROR, 8 ms, authoritativenoyes / yesrefusedN/A

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.tbits.net: "N/A"; ns2.tbits.net: "N/A".
    #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 2026071601 · primary ns1.tbits.net

Found

Primary (MNAME)
ns1.tbits.net
Contact (RNAME)
hostmaster.tbits.net
Serial
2026071601
Refresh / retry
43200 s / 5400 s
Expire
3600000 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.tbits.net (178.250.224.2)2026071601
ns1.tbits.net (2a00:b260:0:100::d001:1)2026071601
ns2.tbits.net (178.250.225.2)2026071601
ns2.tbits.net (2a00:b260:0:110::d002:1)2026071601

Checks

  • ✓ Serial 2026071601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 90m, expire 1000h, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.tbits.net is one of the listed nameservers.
  • ✓ Contact hostmaster@tbits.net #25
    The SOA RNAME hostmaster.tbits.net means hostmaster@tbits.net.
  • ✓ Date-based serial #26
    The serial 2026071601 follows the YYYYMMDDnn convention (2026-07-16).

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

pass

10 records at the apex

Found

Read from
178.250.224.2:53
TypeValueTTL
SOAns1.tbits.net. hostmaster.tbits.net. 2026071601 43200 5400 3600000 86400600
NSns1.tbits.net.600
NSns2.tbits.net.600
A178.250.226.115600
AAAA2a00:b260:0:2139::a002:1600
MX10 mg01.kep.de.600
TXT"v=spf1 a:mg01.tbits.net a:mailgate02.tbits.net a:mailgate03.tbits.net a:mailgate04.tbits.net a:mailgate05.tbits.net a:mailgate01.tbits.net +mx include:spf.mailjet.com ~all"600
TXT"google-site-verification=DYV_vB1grPcIsJLcC1CLHUpwvaC6pQ4QMfiTyrHTehA"600
CAA128 issue "digicert.com"600
CAA0 issue "letsencrypt.org"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, AAAA 10m, MX 10m, NS 10m. The NS TTL at the parent is 1d and in the zone 10m; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: digicert.com, letsencrypt.org.