minden.de

Checked 21 October 2026, 23:30 UTC · via 8.8.8.8
!Passed with warnings
26 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

ns1.teuto.net, ns2.teuto.net, ns3.teuto.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.teuto.net, ns2.teuto.net, ns3.teuto.net
NS in the zone
ns1.teuto.net, ns2.teuto.net, ns3.teuto.net
NameserverAddressesNetwork (AS)Glue
ns1.teuto.net212.15.202.2 2001:ae0:0:51::2AS8925 TEUTONET-AS - teuto.net Netzdienste GmbH, DE AS8925 TEUTONET-AS - teuto.net Netzdienste GmbH, DE-
ns2.teuto.net212.15.202.3 2001:ae0:0:51::3AS8925 TEUTONET-AS - teuto.net Netzdienste GmbH, DE AS8925 TEUTONET-AS - teuto.net Netzdienste GmbH, DE-
ns3.teuto.net212.15.205.12AS42008 TEUTONET - teuto.net Netzdienste GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.teuto.net, ns2.teuto.net, ns3.teuto.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2001:ae0::/48, while the other address family is spread over several networks.
    #10
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS42008 (TEUTONET - teuto.net Netzdienste GmbH, DE): 1 address; AS8925 (TEUTONET-AS - teuto.net Netzdienste 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns3.teuto.net.
    #13

Nameservers

warn

5 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.teuto.net 212.15.202.2NOERROR, 13 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns1.teuto.net 2001:ae0:0:51::2NOERROR, 16 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns2.teuto.net 212.15.202.3NOERROR, 16 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.24.04.8-Ubuntu
ns2.teuto.net 2001:ae0:0:51::3NOERROR, 16 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.24.04.8-Ubuntu
ns3.teuto.net 212.15.205.12NOERROR, 3 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu

Checks

  • ✓ All respond #14
    All 5 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: ns1.teuto.net: "9.18.39-0ubuntu0.22.04.7-Ubuntu"; ns2.teuto.net: "9.18.39-0ubuntu0.24.04.8-Ubuntu"; ns3.teuto.net: "9.18.39-0ubuntu0.22.04.7-Ubuntu". 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 2026102102 · primary ns1.teuto.net

Found

Primary (MNAME)
ns1.teuto.net
Contact (RNAME)
hostmaster.teuto.net
Serial
2026102102
Refresh / retry
28000 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.teuto.net (212.15.202.2)2026102102
ns1.teuto.net (2001:ae0:0:51::2)2026102102
ns2.teuto.net (212.15.202.3)2026102102
ns2.teuto.net (2001:ae0:0:51::3)2026102102
ns3.teuto.net (212.15.205.12)2026102102

Checks

  • ✓ Serial 2026102102 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 7h46m40s, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.teuto.net is one of the listed nameservers.
  • ✓ Contact hostmaster@teuto.net #25
    The SOA RNAME hostmaster.teuto.net means hostmaster@teuto.net.
  • ✓ Date-based serial #26
    The serial 2026102102 follows the YYYYMMDDnn convention (2026-10-21).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
0 iterations, 0-byte salt
Signatures valid until
6 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
10023ECDSAP256SHA256 (13)SHA256 4BFBAC53C1CFB105…yes

DNSKEY in the zone

Key tagRoleAlgorithm
10023KSK (257)ECDSAP256SHA256 (13)
54626ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 10023 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-11-06 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-06 00:38 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

info

15 records at the apex

Found

Read from
212.15.202.2:53
TypeValueTTL
SOAns1.teuto.net. hostmaster.teuto.net. 2026102102 28000 7200 604800 864007200
NSns1.teuto.net.7200
NSns2.teuto.net.7200
NSns3.teuto.net.7200
A89.110.176.1047200
MX10 mx.krz.de.7200
TXT"MS=ms53229789"3600
TXT"MS=F0AA4BF7C05BD9C12321ADBDCE7E18E072F4082A"3600
TXT"v=spf1 mx a ip4:62.153.132.3 ip4:62.153.231.100 ip4:52.157.144.110 a:mx.krz.de a:mx100.krz.de include:spf.crsend.com include:spf.regioit.de -all"3600
TXT"apple-domain-verification=DgKzyMup1RM8AuyS"3600
TXT"google-site-verification=VmgbZ_MHOzNPfihGkoM2l6GuGu0I_nca8WwZxrV4G6U"3600
TXT"6hr1mpccd5r3b5316vhkjyvdjzd7y20w"3600
TXT"apple-domain-verification=tpWiUZ3gIbmxLO1a"3600
TXT"cisco-ci-domain-verification=1b25987e5f941f80a166276216e81f693a0fe5e0185a6a02e0ded3851eb5d15d"3600
TXT"z45fbg6vqz3b08004hrgwlnbxz1ygsc3"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 2h, MX 2h, NS 2h. The NS TTL at the parent is 1d and in the zone 2h; 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