maxdome.de

Checked 21 October 2026, 23:21 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 4 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

warn

dns-auth-1.corpex-dns.de, dns-auth-2.corpex-dns.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns-auth-1.corpex-dns.de, dns-auth-2.corpex-dns.net
NS in the zone
dns-auth-1.corpex-dns.de, dns-auth-2.corpex-dns.net
NameserverAddressesNetwork (AS)Glue
dns-auth-1.corpex-dns.de194.6.192.6AS39227 CORPEX-AS - Corpex Internet GmbH, DE194.6.192.6
dns-auth-2.corpex-dns.net212.53.202.135AS8893 ARTFILES-AS - Artfiles New Media GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns-auth-1.corpex-dns.de, dns-auth-2.corpex-dns.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.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 2 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS39227 (CORPEX-AS - Corpex Internet GmbH, DE): 1 address; AS8893 (ARTFILES-AS - Artfiles New Media GmbH, DE): 1 address.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns-auth-1.corpex-dns.de 194.6.192.6NOERROR, 10 ms, authoritativenoyes / yesrefused-
dns-auth-2.corpex-dns.net 212.53.202.135NOERROR, 10 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 2 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 2025120805 · primary dns-auth-1.corpex-dns.de

Found

Primary (MNAME)
dns-auth-1.corpex-dns.de
Contact (RNAME)
dnsmaster.corpex-dns.de
Serial
2025120805
Refresh / retry
28800 s / 7200 s
Expire
3600000 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns-auth-1.corpex-dns.de (194.6.192.6)2025120805
dns-auth-2.corpex-dns.net (212.53.202.135)2025120805

Checks

  • ✓ Serial 2025120805 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 1000h, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns-auth-1.corpex-dns.de is one of the listed nameservers.
  • ✓ Contact dnsmaster@corpex-dns.de #25
    The SOA RNAME dnsmaster.corpex-dns.de means dnsmaster@corpex-dns.de.
  • ✓ Date-based serial #26
    The serial 2025120805 follows the YYYYMMDDnn convention (2025-12-08).

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

11 records at the apex

Found

Read from
194.6.192.6:53
TypeValueTTL
SOAdns-auth-1.corpex-dns.de. dnsmaster.corpex-dns.de. 2025120805 28800 7200 3600000 3600600
NSdns-auth-2.corpex-dns.net.600
NSdns-auth-1.corpex-dns.de.600
A194.6.193.38600
MX10 iris.corpex-net.de.600
MX100 smtp-relay.corpex-net.de.600
MX110 smtp-fallback.corpex-net.de.600
TXT"Sendinblue-code:e10210fea9fa53bba8bda4d1273b51ef"600
TXT"google-site-verification=ESamrJ7ZcXOd_W_Z6t5GF-mEDKkT11d6r6ibwX8nydQ"600
TXT"_globalsign-domain-verification=0S4ocfTEPjd_8GLE798Bx5v-qz-HPPItkrMqW78m6Y"600
TXT"v=spf1 mx include:spf.corpex.de include:spf.sendinblue.com ~all"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 10m, NS 10m. The NS TTL at the parent is 1d and in the zone 10m; 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