fnweb.de

Checked 21 October 2026, 22:30 UTC · via 8.8.8.8
!Passed with warnings
22 passed 1 warning 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

info

ns.mamo.de, ns.she.de, ns2.she.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.mamo.de, ns.she.de, ns2.she.de
NS in the zone
ns.mamo.de, ns.she.de, ns2.she.de
NameserverAddressesNetwork (AS)Glue
ns.mamo.de193.101.220.53AS3209 VODANET - Vodafone GmbH, DE193.101.220.53
ns.she.de212.21.161.64 2a00:a980::53AS9022 TWL-KOM-AS - TWL-KOM GmbH, DE AS9022 TWL-KOM-AS - TWL-KOM GmbH, DE212.21.161.64 2a00:a980::53
ns2.she.de85.215.5.236AS6786 CRONON-BERLIN-AS - Cronon GmbH, DE85.215.5.236

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.mamo.de, ns.she.de, ns2.she.de.
  • ✓ 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 1 IPv6 /48.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS3209 (VODANET - Vodafone GmbH, DE): 1 address; AS6786 (CRONON-BERLIN-AS - Cronon GmbH, DE): 1 address; AS9022 (TWL-KOM-AS - TWL-KOM GmbH, DE): 2 addresses.
  • 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns.mamo.de, ns2.she.de.
    #13

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.mamo.de 193.101.220.53NOERROR, 12 ms, authoritativenoyes / yesrefusedthis is bind in some newer version
ns.she.de 212.21.161.64NOERROR, 5 ms, authoritativenoyes / yesrefusedthis is bind in some newer version
ns.she.de 2a00:a980::53NOERROR, 5 ms, authoritativenoyes / yesrefusedthis is bind in some newer version
ns2.she.de 85.215.5.236NOERROR, 13 ms, authoritativenoyes / yesrefusedthis is bind in some newer version

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: ns.mamo.de: "this is bind in some newer version"; ns.she.de: "this is bind in some newer version"; ns2.she.de: "this is bind in some newer version".
    #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 2026092200 · primary ns.mamo.de

Found

Primary (MNAME)
ns.mamo.de
Contact (RNAME)
hostmaster.mamo.de
Serial
2026092200
Refresh / retry
43200 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns.mamo.de (193.101.220.53)2026092200
ns.she.de (212.21.161.64)2026092200
ns.she.de (2a00:a980::53)2026092200
ns2.she.de (85.215.5.236)2026092200

Checks

  • ✓ Serial 2026092200 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 ns.mamo.de is one of the listed nameservers.
  • ✓ Contact hostmaster@mamo.de #25
    The SOA RNAME hostmaster.mamo.de means hostmaster@mamo.de.
  • ✓ Date-based serial #26
    The serial 2026092200 follows the YYYYMMDDnn convention (2026-09-22).

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

13 records at the apex

Found

Read from
193.101.220.53:53
TypeValueTTL
SOAns.mamo.de. hostmaster.mamo.de. 2026092200 43200 7200 1209600 8640086400
NSns.she.de.86400
NSns.mamo.de.86400
NSns2.she.de.86400
A213.182.7.13886400
MX10 mx01.hornetsecurity.com.300
MX30 mx03.hornetsecurity.com.300
MX20 mx02.hornetsecurity.com.300
MX40 mx04.hornetsecurity.com.300
TXT"MS=ms41439606"86400
TXT"Domainname protected by SHE"86400
TXT"google-site-verification=Tvw321D1wncksy2MoROmzpF-UkVscaXEViNkjOjuEhM"86400
TXT"v=spf1 mx a ip4:88.99.64.201 ip4:193.101.220.0/23 ip4:213.182.7.132 ip4:213.182.7.135 ip4:213.182.7.140 ip4:195.74.44.0/22 ip4:88.99.64.201 include:inxserver.com include:amazonses.com include:spf.protection.outlook.com include:spf.hornetsecurity.com " "include:spf.brevo.com include:spf.yve-tool.de -all"86400

Checks

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