stroeer.de

Checked 22 October 2026, 00:31 UTC · via 8.8.8.8
!Passed with warnings
20 passed 2 warnings 0 failed 7 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

gordon.ns.cloudflare.com, maria.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
gordon.ns.cloudflare.com, maria.ns.cloudflare.com
NS in the zone
gordon.ns.cloudflare.com, maria.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
gordon.ns.cloudflare.com173.245.59.170 172.64.33.170 108.162.193.170 2606:4700:58::adf5:3baa 2a06:98c1:50::ac40:21aa 2803:f800:50::6ca2:c1aaAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
maria.ns.cloudflare.com173.245.58.192 108.162.192.192 172.64.32.192 2a06:98c1:50::ac40:20c0 2606:4700:50::adf5:3ac0 2803:f800:50::6ca2:c0c0AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: gordon.ns.cloudflare.com, maria.ns.cloudflare.com.
    #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 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 12 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 .com
    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

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
gordon.ns.cloudflare.com 173.245.59.170NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
gordon.ns.cloudflare.com 172.64.33.170NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
gordon.ns.cloudflare.com 108.162.193.170NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
gordon.ns.cloudflare.com 2606:4700:58::adf5:3baaNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
gordon.ns.cloudflare.com 2a06:98c1:50::ac40:21aaNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
gordon.ns.cloudflare.com 2803:f800:50::6ca2:c1aaNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
maria.ns.cloudflare.com 173.245.58.192NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
maria.ns.cloudflare.com 108.162.192.192NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
maria.ns.cloudflare.com 172.64.32.192NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
maria.ns.cloudflare.com 2a06:98c1:50::ac40:20c0NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
maria.ns.cloudflare.com 2606:4700:50::adf5:3ac0NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
maria.ns.cloudflare.com 2803:f800:50::6ca2:c0c0NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 12 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: gordon.ns.cloudflare.com: "2026.10.2"; maria.ns.cloudflare.com: "2026.10.2". 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 2417636385 · primary gordon.ns.cloudflare.com

Found

Primary (MNAME)
gordon.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417636385
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
gordon.ns.cloudflare.com (173.245.59.170)2417636385
gordon.ns.cloudflare.com (172.64.33.170)2417636385
gordon.ns.cloudflare.com (108.162.193.170)2417636385
gordon.ns.cloudflare.com (2606:4700:58::adf5:3baa)2417636385
gordon.ns.cloudflare.com (2a06:98c1:50::ac40:21aa)2417636385
gordon.ns.cloudflare.com (2803:f800:50::6ca2:c1aa)2417636385
maria.ns.cloudflare.com (173.245.58.192)2417636385
maria.ns.cloudflare.com (108.162.192.192)2417636385
maria.ns.cloudflare.com (172.64.32.192)2417636385
maria.ns.cloudflare.com (2a06:98c1:50::ac40:20c0)2417636385
maria.ns.cloudflare.com (2606:4700:50::adf5:3ac0)2417636385
maria.ns.cloudflare.com (2803:f800:50::6ca2:c0c0)2417636385

Checks

  • ✓ Serial 2417636385 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver gordon.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417636385 is a Unix timestamp (2046-08-11 21:39 UTC).

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

42 records at the apex

Found

Read from
173.245.59.170:53
TypeValueTTL
SOAgordon.ns.cloudflare.com. dns.cloudflare.com. 2417636385 10000 2400 604800 18001800
NSgordon.ns.cloudflare.com.86400
NSmaria.ns.cloudflare.com.86400
A104.20.21.143300
A172.66.149.109300
AAAA2606:4700:10::6814:158f300
AAAA2606:4700:10::ac42:956d300
MX0 stroeer-de.mail.protection.outlook.com.3600
TXT"00D1r000000sHMC=1TBbI000000076L"300
TXT"069af78d867313b3c0747645ff68f837dcbe3cfef80ee01be1"300
TXT"310C07D3E0DF74963A17241F4737E3168E8A42E55D5EE3A7B9CAEE1C74A2E4EE"300
TXT"MS=ms19419439"300
TXT"MS=ms32754024"300
TXT"PREH0zsPekelLTSVohEqlgy70ttxXPfQT1NCdWZSXmT1g3LJaMdvZbgbmTYnM4cHe5qyn8jTcPBZOsewFE+5pQ=="300
TXT"\226\128\15600D200000000HBN=1TBbH000000004r\226\128\156"300
TXT"_9w6owo53qwmjcng2ltb2r963h93uvqd"300
TXT"_op633zi631nm7j1vbr9yizryp9rj9m1"300
TXT"adobe-idp-site-verification=51b783c7909a44aeb6b0d0b21611527cad8fdf687a2873b9c509cd346fed3eb8"300
TXT"adobe-sign-verification=c1165e1ffcd95936f8e20ef18dae6b8f"300
TXT"anthropic-domain-verification-14x8a1=e3hDwYVsncDLpxPES2KeeMXF2"300
TXT"anthropic-domain-verification-kqjaem=niBroIR9RsPPuT59yI3KUKhGc"300
TXT"apple-domain-verification=Es1ku8zu8sXYGxKP"300
TXT"atlassian-domain-verification=3aaquekJi1NH0Kgl1iDqm4druV3rxujAL8ZMBAom5caU7gScEVLuCI6gZsaT82iW"300
TXT"atlassian-domain-verification=AfhsQLYTK362SCAfOxxlrmqmr+lJWKSrXaEK3nx4Tq9B7sv3Hzb4fYeiYmrVpgFb"300
TXT"bw=hOuZLsNt/sFfLnBworpT4fPos6msraWgLZD19Q6+L4G3"300
TXT"docusign=02ff1ef8-4e10-4d58-9bb0-09692aecd2c7"300
TXT"domain-verification=UGV1YzEzRGN0MG96U0lQYUtXMldSMkhXWm5JZ01VdTUtVDNEeWxXSjlDNEJLOFg3aXFKeWptRTRFcDRlSA=="300
TXT"facebook-domain-verification=6er9jm2un571ldjemkgyn905br85ie"300
TXT"google-site-verification=PAu9IFzoqk5aWdMySU4OYY4BT0-qsfUG71S6NHuMDlg"300
TXT"google-site-verification=pB_fN1tCGVwOkRS4HmS6nPYS0-069qVZ9KTdhZGWPvk"300
TXT"j4cvk0lvjfp44gg957r23v8j3m"300
TXT"jamf-site-verification=TNRqmvLIL6Quy8hROG3sPA"300
TXT"miro-verification=48102eb2bc867cb7a3977a15ab8c04709cebd705"300
TXT"mongodb-site-verification=wNgPmx1PHR6C3dZdM8GTQnDvU4sYIQP7"300
TXT"onetrust-domain-verification=96ade2ca70084347ad78dbaadfdb78ed"300
TXT"openai-domain-verification=dv-glHoBudACZXCHltGIWQEWWMj"300
TXT"perplexity-ai-domain-verification-jce0j8=ciFPOl4twUQMuBClLrqJROptI"300
TXT"sending_domain994832=347b2eda9132ebf1342e6fb17114bcccc53b9380d252474ed1d18d8d1d7469de"300
TXT"slack-domain-verification=hbJ3Jx1jTS8YgWbZm8euOwTMNJHzmNfsK1pldpPR"300
TXT"spycloud-domain-verification=73c6ac03-3b39-4fe5-98ff-794e7b3b237f"300
TXT"teamviewer-sso-verification=38c3087ebe374b7fa5da9fa67dae5b10"300
TXT"v=spf1 ip4:194.8.217.158 ip4:194.245.39.25 include:spf.mailjet.com include:_spf.pool2.transactional-mail-a.com include:_spf.retarus.com include:mail.zendesk.com include:amazonses.com include:spf.crsend.com include:_spf.salesforce.com include:spf.protectio" "n.outlook.com ip4:87.225.250.101/28 -all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, 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