dvinci.de

Checked 21 October 2026, 22:15 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 3 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

a1-170.akam.net, a11-64.akam.net, a16-65.akam.net, a20-64.akam.net, a4-67.akam.net, a7-64.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a1-170.akam.net, a11-64.akam.net, a16-65.akam.net, a20-64.akam.net, a4-67.akam.net, a7-64.akam.net
NS in the zone
a1-170.akam.net, a11-64.akam.net, a16-65.akam.net, a20-64.akam.net, a4-67.akam.net, a7-64.akam.net
NameserverAddressesNetwork (AS)Glue
a1-170.akam.net193.108.91.170 2600:1401:2::aaAS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a11-64.akam.net84.53.139.64 2600:1480:1::40AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a16-65.akam.net23.211.132.65 2600:1406:1b::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a20-64.akam.net95.100.175.64 2a02:26f0:67::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a4-67.akam.net72.246.46.67 2600:1480:9000::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-64.akam.net23.61.199.64 2600:1406:32::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-170.akam.net, a11-64.akam.net, a16-65.akam.net, a20-64.akam.net, a4-67.akam.net, a7-64.akam.net.
  • ✓ 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 6 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 2 addresses; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 10 addresses.
  • 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

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-170.akam.net 193.108.91.170NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
a1-170.akam.net 2600:1401:2::aaNOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
a11-64.akam.net 84.53.139.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.6
a11-64.akam.net 2600:1480:1::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
a16-65.akam.net 23.211.132.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a16-65.akam.net 2600:1406:1b::41NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a20-64.akam.net 95.100.175.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a20-64.akam.net 2a02:26f0:67::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a4-67.akam.net 72.246.46.67NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a4-67.akam.net 2600:1480:9000::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a7-64.akam.net 23.61.199.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.4
a7-64.akam.net 2600:1406:32::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7

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: a1-170.akam.net: "41824.5"; a1-170.akam.net: "41824.11"; a11-64.akam.net: "41824.6"; a11-64.akam.net: "41824.10"; a16-65.akam.net: "48878.31"; a20-64.akam.net: "48878.33"; a20-64.akam.net: "48878.29"; a4-67.akam.net: "48878.32"; a4-67.akam.net: "48878.31"; a7-64.akam.net: "41824.4"; a7-64.akam.net: "41824.7". 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 2026042322 · primary a1-170.akam.net

Found

Primary (MNAME)
a1-170.akam.net
Contact (RNAME)
hostmaster.dvinci.de
Serial
2026042322
Refresh / retry
3600 s / 600 s
Expire
604800 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
a1-170.akam.net (193.108.91.170)2026042322
a1-170.akam.net (2600:1401:2::aa)2026042322
a11-64.akam.net (84.53.139.64)2026042322
a11-64.akam.net (2600:1480:1::40)2026042322
a16-65.akam.net (23.211.132.65)2026042322
a16-65.akam.net (2600:1406:1b::41)2026042322
a20-64.akam.net (95.100.175.64)2026042322
a20-64.akam.net (2a02:26f0:67::40)2026042322
a4-67.akam.net (72.246.46.67)2026042322
a4-67.akam.net (2600:1480:9000::43)2026042322
a7-64.akam.net (23.61.199.64)2026042322
a7-64.akam.net (2600:1406:32::40)2026042322

Checks

  • ✓ Serial 2026042322 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 10m, expire 7d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-170.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@dvinci.de #25
    The SOA RNAME hostmaster.dvinci.de means hostmaster@dvinci.de.
  • ✓ Date-based serial #26
    The serial 2026042322 follows the YYYYMMDDnn convention (2026-04-23).

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

pass

25 records at the apex

Found

Read from
193.108.91.170:53
TypeValueTTL
SOAa1-170.akam.net. hostmaster.dvinci.de. 2026042322 3600 600 604800 9003600
NSa16-65.akam.net.3600
NSa7-64.akam.net.3600
NSa4-67.akam.net.3600
NSa20-64.akam.net.3600
NSa1-170.akam.net.3600
NSa11-64.akam.net.3600
A85.13.139.82300
MX100 spamguard.dvinci.net.3600
TXT"jetbrains-domain-verification=2dczxp977kpdrv3hgheijaic6"3600
TXT"sending_domain860613=b4ae02755fc6659126cb8eddab12926ab123e384212839d6511464d8747340ab"3600
TXT"MS=C1C365384AFA8CDDBFC375CA74EE326D42C9F522"3600
TXT"atlassian-domain-verification=y7roITiDlGW3mD1hMCFlmmwAaCv7i8bUA//ums9fPbG5iayOMSQ34qNvFU6HKdci"3600
TXT"OxHx4le0Wc+TWtm4O0em6VO0beN/gvlUuWIKMpXL6D3N0vvfkcBB4xZLutM8So8mnYD8j6gGGHYc4zzVJnLcGg=="3600
TXT"google-site-verification=icqo0Z50lyvYZkHAnCkBin_s951lFyGDfwFJeYLVqkE"3600
TXT"apple-domain-verification=Grq3R3am0F2xJwQ9"3600
TXT"google-site-verification=I7HNzhOHgz4mXQY33WHIOHcEMvK4gU9xvkQyDohwTLU"3600
TXT"v=spf1 ip4:185.18.100.0/24 ip4:193.27.46.0/24 a:spamguard.dvinci.net include:_spf.salesforce.com include:mail.zendesk.com include:spf.protection.outlook.com include:aspmx.pardot.com include:146592302.spf03.hubspotemail.net ~all"3600
TXT"miro-verification=5ae8eec4e27a2b5759c92cecfaf60bd8d78cdf62"3600
TXT"MS=ms78446728"3600
TXT"anthropic-domain-verification-5jnvp7=QX1suwqKCtNeNpXs5iUoBEt7X"3600
TXT"00D3X000002oGGr=1TBaV0000000CUD"3600
CAA0 issue "pki.goog"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "Digicert.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: pki.goog, letsencrypt.org, Digicert.com.