felix-burda-stiftung.de

Checked 21 October 2026, 22:20 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 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

info

ns.ccn.net, ns2.ccn.net, ns3.ccn.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.ccn.net, ns2.ccn.net, ns3.ccn.net
NS in the zone
ns.ccn.net, ns2.ccn.net, ns3.ccn.net
NameserverAddressesNetwork (AS)Glue
ns.ccn.net217.74.176.1 2001:1a30::11AS29488 CCN - ccn corporate communication networks GmbH, DE AS29488 CCN - ccn corporate communication networks GmbH, DE-
ns2.ccn.net185.208.36.11 2001:1a30:c000::11AS29488 CCN - ccn corporate communication networks GmbH, DE AS29488 CCN - ccn corporate communication networks GmbH, DE-
ns3.ccn.net104.248.38.185 2a03:b0c0:3:e0::7f:1001AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.ccn.net, ns2.ccn.net, ns3.ccn.net.
  • ✓ 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: AS14061 (DIGITALOCEAN-ASN - DigitalOcean, LLC, US): 2 addresses; AS29488 (CCN - ccn corporate communication networks GmbH, DE): 4 addresses.
  • 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

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.ccn.net 217.74.176.1NOERROR, 3 ms, authoritativenoyes / yesrefused9.16.23-RH
ns.ccn.net 2001:1a30::11NOERROR, 4 ms, authoritativenoyes / yesrefused9.16.23-RH
ns2.ccn.net 185.208.36.11NOERROR, 3 ms, authoritativenoyes / yesrefused9.16.23-RH
ns2.ccn.net 2001:1a30:c000::11NOERROR, 4 ms, authoritativenoyes / yesrefused9.16.23-RH
ns3.ccn.net 104.248.38.185NOERROR, 5 ms, authoritativenoyes / yesrefused9.16.50-RH
ns3.ccn.net 2a03:b0c0:3:e0::7f:1001NOERROR, 4 ms, authoritativenoyes / yesrefused9.16.50-RH

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns.ccn.net: "9.16.23-RH"; ns2.ccn.net: "9.16.23-RH"; ns3.ccn.net: "9.16.50-RH". Hide or replace the version string.
    #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 2024011806 · primary ns.ccn.net

Found

Primary (MNAME)
ns.ccn.net
Contact (RNAME)
hostmaster.ccn.net
Serial
2024011806
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns.ccn.net (217.74.176.1)2024011806
ns.ccn.net (2001:1a30::11)2024011806
ns2.ccn.net (185.208.36.11)2024011806
ns2.ccn.net (2001:1a30:c000::11)2024011806
ns3.ccn.net (104.248.38.185)2024011806
ns3.ccn.net (2a03:b0c0:3:e0::7f:1001)2024011806

Checks

  • ✓ Serial 2024011806 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.ccn.net is one of the listed nameservers.
  • ✓ Contact hostmaster@ccn.net #25
    The SOA RNAME hostmaster.ccn.net means hostmaster@ccn.net.
  • ✓ Date-based serial #26
    The serial 2024011806 follows the YYYYMMDDnn convention (2024-01-18).

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

10 records at the apex

Found

Read from
217.74.176.1:53
TypeValueTTL
SOAns.ccn.net. hostmaster.ccn.net. 2024011806 28800 7200 604800 8640086400
NSns3.ccn.net.86400
NSns2.ccn.net.86400
NSns.ccn.net.86400
A185.40.250.73600
MX10 felixburdastiftung-de01ci.mail.protection.outlook.com.86400
TXT"google-site-verification=Lup3mlH9P8vHgnriT3KEgjFum96Iw33PwaKuyTE3tx0"3600
TXT"google-site-verification=L13FZHjsAFLYiERsNnm3WXUZu80_lCy1iRCALn-kuRE"3600
TXT"MS=ms33545257"3600
TXT"v=spf1 a include:spf.burda.com include:spf.protection.outlook.com include:servers.mcsv.net include:inxserver.com -all"3600

Checks

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