philipphudek.de

Checked 21 October 2026, 23:50 UTC · via 8.8.8.8
!Passed with warnings
19 passed 2 warnings 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

dns01.manitu.net, dns02.manitu.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns01.manitu.net, dns02.manitu.net
NS in the zone
dns01.manitu.net, dns02.manitu.net
NameserverAddressesNetwork (AS)Glue
dns01.manitu.net217.11.48.200 2a00:1828:1000:1148::2AS34240 MANITU - manitu GmbH, DE AS34240 MANITU - manitu GmbH, DE-
dns02.manitu.net217.11.49.200 2a00:1828:1000:1149::2AS34240 MANITU - manitu GmbH, DE AS34240 MANITU - manitu GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns01.manitu.net, dns02.manitu.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 2a00:1828:1000::/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 (AS34240 (MANITU - manitu 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

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns01.manitu.net 217.11.48.200NOERROR, 8 ms, authoritativenoyes / yesrefused9.18.49
dns01.manitu.net 2a00:1828:1000:1148::2NOERROR, 11 ms, authoritativenoyes / yesrefused9.18.49
dns02.manitu.net 217.11.49.200NOERROR, 8 ms, authoritativenoyes / yesrefused9.20.27
dns02.manitu.net 2a00:1828:1000:1149::2NOERROR, 11 ms, authoritativenoyes / yesrefused9.20.27

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: dns01.manitu.net: "9.18.49"; dns02.manitu.net: "9.20.27". 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 2025112701 · primary dns01.manitu.net

Found

Primary (MNAME)
dns01.manitu.net
Contact (RNAME)
hostmaster.manitu.net
Serial
2025112701
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
dns01.manitu.net (217.11.48.200)2025112701
dns01.manitu.net (2a00:1828:1000:1148::2)2025112701
dns02.manitu.net (217.11.49.200)2025112701
dns02.manitu.net (2a00:1828:1000:1149::2)2025112701

Checks

  • ✓ Serial 2025112701 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns01.manitu.net is one of the listed nameservers.
  • ✓ Contact hostmaster@manitu.net #25
    The SOA RNAME hostmaster.manitu.net means hostmaster@manitu.net.
  • ✓ Date-based serial #26
    The serial 2025112701 follows the YYYYMMDDnn convention (2025-11-27).

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

7 records at the apex

Found

Read from
217.11.48.200:53
TypeValueTTL
SOAdns01.manitu.net. hostmaster.manitu.net. 2025112701 10800 3600 604800 8640086400
NSdns01.manitu.net.86400
NSdns02.manitu.net.86400
A217.11.48.19586400
AAAA2a00:1828:3000::1:2e44:286400
MX10 mail026.webhosting.manitu.net.86400
TXT"v=spf1 mx a include:_spf.manitu.net -all"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, AAAA 1d, MX 1d, NS 1d.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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