radiobremen.de

Checked 21 October 2026, 23:52 UTC · via 8.8.8.8
!Passed with warnings
20 passed 1 warning 0 failed 8 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

auth1.artfiles.de, auth2.artfiles.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
auth1.artfiles.de, auth2.artfiles.de
NS in the zone
auth1.artfiles.de, auth2.artfiles.de
NameserverAddressesNetwork (AS)Glue
auth1.artfiles.de212.48.124.53 2a00:1f78:af:a1::2AS8893 ARTFILES-AS - Artfiles New Media GmbH, DE AS8893 ARTFILES-AS - Artfiles New Media GmbH, DE212.48.124.53 2a00:1f78:af:a1::2
auth2.artfiles.de212.48.125.53 2a00:1f78:af:a2::2AS8893 ARTFILES-AS - Artfiles New Media GmbH, DE AS8893 ARTFILES-AS - Artfiles New Media GmbH, DE212.48.125.53 2a00:1f78:af:a2::2

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: auth1.artfiles.de, auth2.artfiles.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2a00:1f78:af::/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 (AS8893 (ARTFILES-AS - Artfiles New Media 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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
auth1.artfiles.de 212.48.124.53NOERROR, 10 ms, authoritativenoyes / yesrefusedArtfiles DNS Service
auth1.artfiles.de 2a00:1f78:af:a1::2NOERROR, 13 ms, authoritativenoyes / yesrefusedArtfiles DNS Service
auth2.artfiles.de 212.48.125.53NOERROR, 10 ms, authoritativenoyes / yesrefusedArtfiles DNS Service
auth2.artfiles.de 2a00:1f78:af:a2::2NOERROR, 10 ms, authoritativenoyes / yesrefusedArtfiles DNS Service

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: auth1.artfiles.de: "Artfiles DNS Service"; auth2.artfiles.de: "Artfiles DNS Service".
    #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 2026101201 · primary auth1.artfiles.de

Found

Primary (MNAME)
auth1.artfiles.de
Contact (RNAME)
hostmaster.artfiles.de
Serial
2026101201
Refresh / retry
28800 s / 9600 s
Expire
806400 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
auth1.artfiles.de (212.48.124.53)2026101201
auth1.artfiles.de (2a00:1f78:af:a1::2)2026101201
auth2.artfiles.de (212.48.125.53)2026101201
auth2.artfiles.de (2a00:1f78:af:a2::2)2026101201

Checks

  • ✓ Serial 2026101201 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 160m, expire 224h, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver auth1.artfiles.de is one of the listed nameservers.
  • ✓ Contact hostmaster@artfiles.de #25
    The SOA RNAME hostmaster.artfiles.de means hostmaster@artfiles.de.
  • ✓ Date-based serial #26
    The serial 2026101201 follows the YYYYMMDDnn convention (2026-10-12).

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

16 records at the apex

Found

Read from
212.48.124.53:53
TypeValueTTL
SOAauth1.artfiles.de. hostmaster.artfiles.de. 2026101201 28800 9600 806400 900900
NSauth1.artfiles.de.900
NSauth2.artfiles.de.900
A35.190.16.50900
MX100 mail.radiobremen.de.900
TXT"MS=ms57787045"900
TXT"_yr71lbe7dv48vcn42dokbri2o4fgeex"900
TXT"google-site-verification=FRufGo4XH0ghQDBfIzls1Oz-mEq-1BRpmA8UPhX0aeE"900
TXT"arn:aws:acm:eu-central-1:063647649674:certificate/cf6788d0-5d8d-43b2-849e-bd8fb64979c4"900
TXT"Sendinblue-code:f2a71ce29ff1b517ce7275f286edef0a"900
TXT"google-gws-recovery-domain-verification=57648447"900
TXT"google-site-verification=58r9KZpDTdLZbBoddhYDtk-nuWsVQndDB8GHvxxGLog"900
TXT"MS=0C73912BEAA705E266AC2081B7C6CDC9DE321AA4"900
TXT"apple-domain-verification=qCRCkkymTXqQbbaE"900
TXT"google-site-verification=6gqrtcjbWdCq0eY7KgooLHKSg_37z3jARc0lYTfIfP8"900
TXT"v=spf1 include:spf.mailjet.com mx ip4:185.17.246.28 ip4:185.25.96.34 include:spf.sendinblue.com include:_pui.sr.de include:spf.crsend.com -all"900

Checks

  • ✓ TTLs within range #32
    TTLs: A 15m, MX 15m, NS 15m. The NS TTL at the parent is 1d and in the zone 15m; 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