titus.de

Checked 22 October 2026, 00:40 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

ns3.ip-projects.de, ns4.ip-projects.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns3.ip-projects.de, ns4.ip-projects.de
NS in the zone
ns3.ip-projects.de, ns4.ip-projects.de
NameserverAddressesNetwork (AS)Glue
ns3.ip-projects.de217.160.80.161 2001:8d8:fe:53:217:160:80:161AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE217.160.80.161 2001:8d8:fe:53:217:160:80:161
ns4.ip-projects.de217.160.81.161 2001:8d8:fe:53:217:160:81:161AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE217.160.81.161 2001:8d8:fe:53:217:160:81:161

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns3.ip-projects.de, ns4.ip-projects.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 2001:8d8:fe::/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 (AS8560 (IONOS-AS - IONOS SE, 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
ns3.ip-projects.de 217.160.80.161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns3.ip-projects.de 2001:8d8:fe:53:217:160:80:161NOERROR, 13 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns4.ip-projects.de 217.160.81.161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns4.ip-projects.de 2001:8d8:fe:53:217:160:81:161NOERROR, 13 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

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: ns3.ip-projects.de: "Served by PowerDNS - https://www.powerdns.com/"; ns4.ip-projects.de: "Served by PowerDNS - https://www.powerdns.com/".
    #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 2025080413 · primary ns3.ip-projects.de

Found

Primary (MNAME)
ns3.ip-projects.de
Contact (RNAME)
p\.knebel.titus.de
Serial
2025080413
Refresh / retry
43200 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns3.ip-projects.de (217.160.80.161)2025080413
ns3.ip-projects.de (2001:8d8:fe:53:217:160:80:161)2025080413
ns4.ip-projects.de (217.160.81.161)2025080413
ns4.ip-projects.de (2001:8d8:fe:53:217:160:81:161)2025080413

Checks

  • ✓ Serial 2025080413 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 2h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns3.ip-projects.de is one of the listed nameservers.
  • ✓ Contact p.knebel@titus.de #25
    The SOA RNAME p\.knebel.titus.de means p.knebel@titus.de.
  • ✓ Date-based serial #26
    The serial 2025080413 follows the YYYYMMDDnn convention (2025-08-04).

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

17 records at the apex

Found

Read from
217.160.80.161:53
TypeValueTTL
SOAns3.ip-projects.de. p\.knebel.titus.de. 2025080413 43200 7200 1209600 8640086400
NSns3.ip-projects.de.86400
NSns4.ip-projects.de.86400
A23.227.38.65300
MX10 titus-de.mail.protection.outlook.com.3600
TXT"facebook-domain-verification=gvi1i38cgqyrjkgxunpqcsmfgzhynw"3600
TXT"MS=ms98074216"3600
TXT"linkedin-site-verification=53d6cd92-4ddf-4bff-abe2-4548d991357f"3600
TXT"klaviyo-site-verification=WJir4m"3600
TXT"pinterest-site-verification=21606f2eb1f502ade70d0b90746d703b"3600
TXT"shopify-verification-code=y6yq6KRv1yLybvCIhlwH1A7MruhdwV"3600
TXT"dropbox-domain-verification=rz9zbc7ybyh7"3600
TXT"v=spf1 mx a:mail.titus.de a:mail2.titus.de a:206144.business-rootserver.net a:titus-sonstiges.business-rootserver.net include:spf.mailjet.com include:spf.emailsignatures365.com include:spf.protection.outlook.com -all"3600
TXT"google-site-verification=IfkgcChRGz9I1Nhr06w4PozfJXO0NAqav-71785138w"3600
TXT"atlassian-domain-verification=Ra0fhP62CzEMTXxwaAAjDTOWvkSCznJQe9RPEOUhfy7qQL1OJ71a4S1a8f7JdDxi"3600
TXT"amazon-business-verification=a906516ceafd7ca757b1988760f797d2bc2202332a5d4bb87351afa08635edd1"3600
TXT"google-site-verification=OVk4qNtmWOJRFnCM7t6VJ0eYQlyaSq1lfkiDi8e0HJE"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, 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