dvgw.de

Checked 21 October 2026, 22:15 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

info

ns1-06.azure-dns.com, ns2-06.azure-dns.net, ns3-06.azure-dns.org, ns4-06.azure-dns.info

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1-06.azure-dns.com, ns2-06.azure-dns.net, ns3-06.azure-dns.org, ns4-06.azure-dns.info
NS in the zone
ns1-06.azure-dns.com, ns2-06.azure-dns.net, ns3-06.azure-dns.org, ns4-06.azure-dns.info
NameserverAddressesNetwork (AS)Glue
ns1-06.azure-dns.com13.107.236.6 2603:1061:0:700::6AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns2-06.azure-dns.net150.171.21.6 2620:1ec:8ec:700::6AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns3-06.azure-dns.org204.14.183.6 2a01:111:4000:700::6AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4-06.azure-dns.info208.84.5.6 2620:1ec:bda:700::6AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-06.azure-dns.com, ns2-06.azure-dns.net, ns3-06.azure-dns.org, ns4-06.azure-dns.info.
  • ✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .info, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1-06.azure-dns.com 13.107.236.6NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1-06.azure-dns.com 2603:1061:0:700::6NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-06.azure-dns.net 150.171.21.6NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-06.azure-dns.net 2620:1ec:8ec:700::6NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns3-06.azure-dns.org 204.14.183.6NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3-06.azure-dns.org 2a01:111:4000:700::6NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns4-06.azure-dns.info 208.84.5.6NOERROR, 4 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns4-06.azure-dns.info 2620:1ec:bda:700::6NOERROR, 5 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 8 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: ns4-06.azure-dns.info: "Knot DNS 3.1.2.1770717641.d6b376aff". 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 1 · primary ns1-06.azure-dns.com

Found

Primary (MNAME)
ns1-06.azure-dns.com
Contact (RNAME)
azuredns-hostmaster.microsoft.com
Serial
1
Refresh / retry
3600 s / 300 s
Expire
2419200 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1-06.azure-dns.com (13.107.236.6)1
ns1-06.azure-dns.com (2603:1061:0:700::6)1
ns2-06.azure-dns.net (150.171.21.6)1
ns2-06.azure-dns.net (2620:1ec:8ec:700::6)1
ns3-06.azure-dns.org (204.14.183.6)1
ns3-06.azure-dns.org (2a01:111:4000:700::6)1
ns4-06.azure-dns.info (208.84.5.6)1
ns4-06.azure-dns.info (2620:1ec:bda:700::6)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 5m, expire 28d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-06.azure-dns.com is one of the listed nameservers.
  • ✓ Contact azuredns-hostmaster@microsoft.com #25
    The SOA RNAME azuredns-hostmaster.microsoft.com means azuredns-hostmaster@microsoft.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Signatures valid until
22 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
38764ECDSAP256SHA256 (13)SHA256 7F42C8AF144B831E…yes

DNSKEY in the zone

Key tagRoleAlgorithm
38764KSK (257)ECDSAP256SHA256 (13)
3953ZSK (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 38764 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-20 21:14 UTC and expires at 2026-10-22 23:14 UTC.

Records

warn

24 records at the apex

Found

Read from
13.107.236.6:53
TypeValueTTL
SOAns1-06.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 2419200 3003600
NSns1-06.azure-dns.com.172800
NSns2-06.azure-dns.net.172800
NSns3-06.azure-dns.org.172800
NSns4-06.azure-dns.info.172800
A13.73.178.16460
MX0 dvgw-de.y-v1.mx.microsoft.3600
TXT"_6nnc7i5e4n2fp6qnhsvio9acf8cedv7"359
TXT"v=spf1 a mx ip4:195.227.0.82/32 ip4:13.93.49.118 ip4:23.97.146.145/32 ip4:20.238.218.208 ip4:20.103.42.117 ip4:13.81.10.189 a:web53.dvgw.cloud include:marketing.dynamics.com include:sendgrid.net include:spf.protection.outlook.com include:_spf.zimpel.de in" "clude:mail.uscreen.net -all"359
TXT"adobe-idp-site-verification=c92d5139ba2196a5fd7abda4f2d1866d6006a04757a7ac7b8129e0ee17cbe158"359
TXT"FzZK8CRkmSQa9WqXS4JU8ZLEswq4soy4N1F4DrMCJx/oYqSIfclOOfuG/wnG2Dm0CRTH3ZY7+IxwLvtSYpC0nw=="359
TXT"apple-domain-verification=wNSJA3pOfdN3Hj8l"359
TXT"d365mktkey=9O4NFSDPjuqyZDTaQBmpajaQMbKLfFOxx5sHSkGg1u8x"359
TXT"ml43fdynfp22tffrzxqvy2ywkq7rh6w7"359
TXT"docusign=c24d617e-b7da-4ca4-9d8d-2b3784ef3291"359
TXT"mindmanager-verification=2dc366499884c061264fe624be1962d6148d937f9cc400bba175032fe3767ddf"359
TXT"canva-site-verification=pxxWTfS4NFDu0gH5injjAQ"359
TXT"google-site-verification=Gvq01BjSBTESmpgxUp-7xm_K5gQTAAItyn38_VKDxv4"359
TXT"miro-verification=fb819346a63b4b9fa3943e92f77464d1bea6ad58"359
TXT"teamviewer-sso-verification=afedc8214a7e4daa9e2a93fefcd43d30"359
TXT"openai-domain-verification=dv-yKxZGFRuOPlq3ydQdXzcCmF5"359
TXT"_4al09qt6oq03ajpdwwjdmtr56zs8x0f"359
TXT"smartsheet-site-validation=pC1bq9cJHm8WY168moDGA0SG7oV8I0yj"359
TXT"_v8acqsekybrj274okp2m9jp94cnwe79"359

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 2d; resolvers may use either.
    #32
  • ✓ 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