oetker.de

Checked 21 October 2026, 23:41 UTC · via 8.8.8.8
iAll checks passed
25 passed 0 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

dns1.cscdns.net, dns2.cscdns.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns1.cscdns.net, dns2.cscdns.net
NS in the zone
dns1.cscdns.net, dns2.cscdns.net
NameserverAddressesNetwork (AS)Glue
dns1.cscdns.net156.154.130.100 2610:a1:1022::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
dns2.cscdns.net156.154.131.100 2610:a1:1023::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns1.cscdns.net, dns2.cscdns.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 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12008 (VERCARA - Vercara, LLC, US): 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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.cscdns.net 156.154.130.100NOERROR, 27 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
dns1.cscdns.net 2610:a1:1022::100NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
dns2.cscdns.net 156.154.131.100NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
dns2.cscdns.net 2610:a1:1023::100NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

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: dns1.cscdns.net: "UltraDNS Nameserver"; dns2.cscdns.net: "UltraDNS Nameserver".
    #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 2018082028 · primary dns1.cscdns.net

Found

Primary (MNAME)
dns1.cscdns.net
Contact (RNAME)
hostmaster.cscdns.net
Serial
2018082028
Refresh / retry
86400 s / 1800 s
Expire
3600000 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns1.cscdns.net (156.154.130.100)2018082028
dns1.cscdns.net (2610:a1:1022::100)2018082028
dns2.cscdns.net (156.154.131.100)2018082028
dns2.cscdns.net (2610:a1:1023::100)2018082028

Checks

  • ✓ Serial 2018082028 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 30m, expire 1000h, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.cscdns.net is one of the listed nameservers.
  • ✓ Contact hostmaster@cscdns.net #25
    The SOA RNAME hostmaster.cscdns.net means hostmaster@cscdns.net.
  • ✓ Date-based serial #26
    The serial 2018082028 follows the YYYYMMDDnn convention (2018-08-20).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
3 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2571ECDSAP256SHA256 (13)SHA256 9A3C7C507206C51B…yes

DNSKEY in the zone

Key tagRoleAlgorithm
27346ZSK (256)ECDSAP256SHA256 (13)
2571KSK (257)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 2571 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-11-03 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-03 02:18 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

info

10 records at the apex

Found

Read from
156.154.130.100:53
TypeValueTTL
SOAdns1.cscdns.net. hostmaster.cscdns.net. 2018082028 86400 1800 3600000 3600300
NSdns1.cscdns.net.3600
NSdns2.cscdns.net.3600
A34.54.55.2063600
MX10 oetker-de.m-v1.mx.microsoft.3600
TXT"MS=ms53802599"3600
TXT"apple-domain-verification=lv7AR7zMMbZYC4wd"3600
TXT"facebook-domain-verification=dxsutoud3eb6si7defwbxo52cq9wyv"3600
TXT"google-site-verification=ghVElmY-h-kbEPIElpEfX9S226Q0vbAbZ2r0xTsTYX0"3600
TXT"v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:_spf-dc33.sapsf.eu -all"3600

Checks

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