zeit-stiftung.de

Checked 22 October 2026, 01:20 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

ns.ppp.de, ns.ppp.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.ppp.de, ns.ppp.net
NS in the zone
ns.ppp.de, ns.ppp.net
NameserverAddressesNetwork (AS)Glue
ns.ppp.de193.141.101.33AS8687 PPP-AS - PPP Internetdienstleistungen GmbH, DE193.141.101.33
ns.ppp.net212.18.80.8AS8687 PPP-AS - PPP Internetdienstleistungen GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns.ppp.de, ns.ppp.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.
  • ✓ 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 (AS8687 (PPP-AS - PPP Internetdienstleistungen 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
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

info

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.ppp.de 193.141.101.33NOERROR, 13 ms, authoritativenoyes / yesrefusedns.ppp.de
ns.ppp.net 212.18.80.8NOERROR, 13 ms, authoritativenoyes / yesrefusedns.ppp.net

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns.ppp.de: "ns.ppp.de"; ns.ppp.net: "ns.ppp.net".
    #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 202607160 · primary ns.ppp.net

Found

Primary (MNAME)
ns.ppp.net
Contact (RNAME)
hostmaster.ppp.net
Serial
202607160
Refresh / retry
43200 s / 1800 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns.ppp.de (193.141.101.33)202607160
ns.ppp.net (212.18.80.8)202607160

Checks

  • ✓ Serial 202607160 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 30m, expire 7d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.ppp.net is one of the listed nameservers.
  • ✓ Contact hostmaster@ppp.net #25
    The SOA RNAME hostmaster.ppp.net means hostmaster@ppp.net.
  • ✓ Counter serial #26
    The serial 202607160 is a plain counter.

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

21 records at the apex

Found

Read from
193.141.101.33:53
TypeValueTTL
SOAns.ppp.net. hostmaster.ppp.net. 202607160 43200 1800 604800 600600
NSns.ppp.net.600
NSns.ppp.de.600
A217.160.0.17600
AAAA2001:8d8:100f:f000::200600
MX20 mx02.hornetsecurity.com.300
MX40 mx04.hornetsecurity.com.300
MX10 mx01.hornetsecurity.com.300
MX30 mx03.hornetsecurity.com.300
TXT"8a1f4e4b940e4d0eb117874d7e1b3176"600
TXT"google-site-verification=WEJkhZHvOnq4b1R2-P-RJgQLMfT4ckGfhPQISDTm1ek"600
TXT"protonmail-verification=1a6b7e90601d8d75b78e5f3aa0b5025fb3287c72"600
TXT"bun089qk5geo8v23m0qk5n33t2"600
TXT"MS=ms93311838i"600
TXT"sophos-domain-verification=9b57f45594aa163f788428af2b6970baa4d6647694ef844857f6a87cdcb2931d"600
TXT"_telesec-domain-validation=Z9JSUN13KQ41LYR882QAFSY56R7BUKLXHFN2MKYRRCED7JC6AB2L5JCOVUPPVMRW"600
TXT"sophos-domain-verification=163d553aa298e6cf9e3b3b885e549d853b5a143c"600
TXT"apple-domain-verification=QbmMwkQld1c3Gcf9"600
TXT"v=spf1 a:gw.zeit-stiftung.de a:mailx.zeit-stiftung.de a:mailx.buceriuskunstforum.de ip4:212.18.80.0/25 ip4:80.237.138.0/24 ip4:212.18.67.160/29 ip4:212.18.67.144/28 include:ispgateway.de" " include:spf.protection.outlook.com include:spf.hornetsecurity.com include:_spf-eu.ionos.com include:spf.crsend.com -all"600
TXT"QuoVadis=7b20b3e2-75e0-493f-8a96-ad002c130183"600
TXT"zone-ownership-verification-64dceb8631ef85132d3760bb417c11bdb8140efe2bef151cb3f77830ae761fba"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, AAAA 10m, MX 5m, 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.
  • 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