concludis.de

Checked 21 October 2026, 22:10 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 5 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

pass

ns.inwx.de, ns2.inwx.de, ns3.inwx.eu

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.inwx.de, ns2.inwx.de, ns3.inwx.eu
NS in the zone
ns.inwx.de, ns2.inwx.de, ns3.inwx.eu
NameserverAddressesNetwork (AS)Glue
ns.inwx.de192.174.68.104 2001:67c:1bc::104AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns2.inwx.de176.97.158.104 2001:67c:10b8::104AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns3.inwx.eu45.87.158.53 2a02:d500::53AS48596 INWX - InterNetworX Management GmbH, DE AS48596 INWX - InterNetworX Management GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.inwx.de, ns2.inwx.de, ns3.inwx.eu.
  • ✓ 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 3 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 4 addresses; AS48596 (INWX - InterNetworX Management GmbH, DE): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .eu.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.inwx.de 192.174.68.104NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns.inwx.de 2001:67c:1bc::104NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns2.inwx.de 176.97.158.104NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
ns2.inwx.de 2001:67c:10b8::104NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
ns3.inwx.eu 45.87.158.53NOERROR, 11 ms, authoritativenoyes / yesrefusedINWX AXFR Server
ns3.inwx.eu 2a02:d500::53NOERROR, 12 ms, authoritativenoyes / yesrefusedINWX AXFR Server

Checks

  • ✓ All respond #14
    All 6 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.inwx.de: "RcodeZero DNS"; ns2.inwx.de: "reg-wie1"; ns3.inwx.eu: "INWX AXFR Server".
    #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 2026101606 · primary ns.inwx.de

Found

Primary (MNAME)
ns.inwx.de
Contact (RNAME)
hostmaster.inwx.de
Serial
2026101606
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns.inwx.de (192.174.68.104)2026101606
ns.inwx.de (2001:67c:1bc::104)2026101606
ns2.inwx.de (176.97.158.104)2026101606
ns2.inwx.de (2001:67c:10b8::104)2026101606
ns3.inwx.eu (45.87.158.53)2026101606
ns3.inwx.eu (2a02:d500::53)2026101606

Checks

  • ✓ Serial 2026101606 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.inwx.de is one of the listed nameservers.
  • ✓ Contact hostmaster@inwx.de #25
    The SOA RNAME hostmaster.inwx.de means hostmaster@inwx.de.
  • ✓ Date-based serial #26
    The serial 2026101606 follows the YYYYMMDDnn convention (2026-10-16).

DNSSEC

warn

Signed, but no DS at parent

Found

Validated by resolver
no
Denial of existence
NSEC3
NSEC3
1 iterations, 1-byte salt
Signatures valid until
29 October 2026

DNSKEY in the zone

Key tagRoleAlgorithm
11818ZSK (256)RSASHA256 (8)
32819KSK (257)RSASHA256 (8)

Checks

  • !
    Signed but not delegated securely
    The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.
    #27
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Signatures valid until 2026-10-29 #30
    The earliest DNSKEY/SOA signature expires at 2026-10-29 00:00 UTC.
  • !
    NSEC3 with extra iterations or salt
    NSEC3 uses 1 iteration and a 1-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.
    #31

Records

info

16 records at the apex

Found

Read from
192.174.68.104:53
TypeValueTTL
SOAns.inwx.de. hostmaster.inwx.de. 2026101606 10800 3600 604800 360086400
NSns.inwx.de.86400
NSns2.inwx.de.86400
NSns3.inwx.eu.86400
A136.243.201.1903600
MX0 mx.noris.de.3600
MX5 mx.noris.net.3600
MX42 fakemx.noris.net.3600
MX50 mail.concludis.de.3600
TXT"MS=ms99756496"300
TXT"miro-verification=62be95531ebdb8c5a50abf4ace6731002584c2fb"300
TXT"have-i-been-pwned-verification=dweb_1j7nly4fq2zgzuewgx895830"300
TXT"anthropic-domain-verification-rbwcqe=Xr7C90BYkW3QphiusxapVhJ8k"300
TXT"google-site-verification=L5lNlcfeLp9P6ULqdTIQnLO_9ewM4BzbXwkLNDbe3CM"300
TXT"google-site-verification=ePpAMD-_EvtcIs7KvGWPhWh4inxTh60ta3KuSq0FLuw"300
TXT"v=spf1 mx include:spf.protection.outlook.com include:spf.noris.net ip4:148.251.255.193 ip4:188.40.50.130 ip4:85.10.218.99 ip4:85.10.204.36 ip4:85.10.204.42 ip4:85.10.204.43 ip4:85.10.204.71 ip4:85.10.204.77 ip4:85.10.204.79 a:mail.concludis.com ~all"300

Checks

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