dell.de

Checked 21 October 2026, 22:12 UTC · via 8.8.8.8
!Passed with warnings
21 passed 4 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

ns1ak.dell.com, ns1ns.dell.com, ns2ak.dell.com, ns2ns.dell.com, ns3ak.dell.com, ns3ns.dell.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1ak.dell.com, ns1ns.dell.com, ns2ak.dell.com, ns2ns.dell.com, ns3ak.dell.com, ns3ns.dell.com
NS in the zone
ns1ak.dell.com, ns1ns.dell.com, ns2ak.dell.com, ns2ns.dell.com, ns3ak.dell.com, ns3ns.dell.com, ns4ak.dell.com, ns4ns.dell.com
NameserverAddressesNetwork (AS)Glue
ns1ak.dell.com193.108.91.65AS20940 AKAMAI-ASN1 - Akamai International B.V., NL-
ns1ns.dell.com162.159.9.149 2400:cb00:2049:1::a29f:995AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
ns2ak.dell.com96.7.49.65 2600:1408:1c::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns2ns.dell.com198.41.223.90 2400:cb00:2049:1::c629:df5aAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
ns3ak.dell.com23.211.133.64 2600:1401:1::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns3ns.dell.com162.159.9.149 2400:cb00:2049:1::a29f:995AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
ns4ak.dell.com (zone only)184.85.248.65 2a02:26f0:117::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns4ns.dell.com (zone only)198.41.223.90 2400:cb00:2049:1::c629:df5aAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • ✓ 6 nameservers #6
    Delegated to ns1ak.dell.com, ns1ns.dell.com, ns2ak.dell.com, ns2ns.dell.com, ns3ak.dell.com, ns3ns.dell.com.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: ns4ak.dell.com, ns4ns.dell.com. ns1ak.dell.com, ns1ns.dell.com, ns2ak.dell.com, ns2ns.dell.com, ns3ak.dell.com, ns3ns.dell.com, ns4ak.dell.com, ns4ns.dell.com report NS ns1ak.dell.com ns1ns.dell.com ns2ak.dell.com ns2ns.dell.com ns3ak.dell.com ns3ns.dell.com ns4ak.dell.com ns4ns.dell.com.
    #7
  • ✓ 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.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 8 addresses; AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 1 address; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 6 addresses.
  • 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns1ak.dell.com.
    #13

Nameservers

warn

15 of 15 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1ak.dell.com 193.108.91.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
ns1ns.dell.com 162.159.9.149NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns1ns.dell.com 2400:cb00:2049:1::a29f:995NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns2ak.dell.com 96.7.49.65NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
ns2ak.dell.com 2600:1408:1c::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
ns2ns.dell.com 198.41.223.90NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns2ns.dell.com 2400:cb00:2049:1::c629:df5aNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns3ak.dell.com 23.211.133.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
ns3ak.dell.com 2600:1401:1::40NOERROR, 5 ms, authoritativenoyes / yesrefused48878.30
ns3ns.dell.com 162.159.9.149NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns3ns.dell.com 2400:cb00:2049:1::a29f:995NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
ns4ak.dell.com 184.85.248.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
ns4ak.dell.com 2a02:26f0:117::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
ns4ns.dell.com 198.41.223.90NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns4ns.dell.com 2400:cb00:2049:1::c629:df5aNOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 15 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: ns1ak.dell.com: "41824.7"; ns1ns.dell.com: "2026.10.2"; ns2ak.dell.com: "41824.9"; ns2ns.dell.com: "2026.10.2"; ns3ak.dell.com: "48878.27"; ns3ak.dell.com: "48878.30"; ns3ns.dell.com: "2026.10.2"; ns4ak.dell.com: "41824.8"; ns4ak.dell.com: "41824.10"; ns4ns.dell.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

warn

serial 2024063764 · primary ns1ak.dell.com

Found

Primary (MNAME)
ns1ak.dell.com
Contact (RNAME)
dnsadmin.dell.com
Serial
2024063764
Refresh / retry
900 s / 300 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1ak.dell.com (193.108.91.65)2024063764
ns1ns.dell.com (162.159.9.149)2024063764
ns1ns.dell.com (2400:cb00:2049:1::a29f:995)2024063764
ns2ak.dell.com (96.7.49.65)2024063764
ns2ak.dell.com (2600:1408:1c::41)2024063764
ns2ns.dell.com (198.41.223.90)2024063764
ns2ns.dell.com (2400:cb00:2049:1::c629:df5a)2024063764
ns3ak.dell.com (23.211.133.64)2024063764
ns3ak.dell.com (2600:1401:1::40)2024063764
ns3ns.dell.com (162.159.9.149)2024063764
ns3ns.dell.com (2400:cb00:2049:1::a29f:995)2024063764
ns4ak.dell.com (184.85.248.65)2024063764
ns4ak.dell.com (2a02:26f0:117::41)2024063764
ns4ns.dell.com (198.41.223.90)2024063764
ns4ns.dell.com (2400:cb00:2049:1::c629:df5a)2024063764

Checks

  • ✓ Serial 2024063764 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d. Current values: refresh 15m, retry 5m, expire 14d, negative TTL 1h.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1ak.dell.com is one of the listed nameservers.
  • ✓ Contact dnsadmin@dell.com #25
    The SOA RNAME dnsadmin.dell.com means dnsadmin@dell.com.
  • ✓ Timestamp serial #26
    The serial 2024063764 is a Unix timestamp (2034-02-20 15:56 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

pass

17 records at the apex

Found

Read from
193.108.91.65:53
TypeValueTTL
SOAns1ak.dell.com. dnsadmin.dell.com. 2024063764 900 300 1209600 36001200
NSns2ns.dell.com.1200
NSns4ak.dell.com.1200
NSns1ak.dell.com.1200
NSns2ak.dell.com.1200
NSns4ns.dell.com.1200
NSns1ns.dell.com.1200
NSns3ak.dell.com.1200
NSns3ns.dell.com.1200
A23.11.32.24600
A23.11.37.22600
MX10 mx1.dellcorporate.iphmx.com.600
TXT"v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com. ~all"3600
TXT"google-site-verification=AsN7P8Ync8ALdzJoheV7ef3NqeMJ8kdYDA_4hSf9ZN4"3600
CAA0 iodef "mailto:pkiadmin@dell.com"600
CAA0 contactemail "pkiadmin@dell.com"600
CAA0 issue "digicert.com; account=b34fd286db03ccad020f0a75010dd75544eaf2b967195b4becb6460c924d35c9"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 10m, NS 20m. The NS TTL at the parent is 1d and in the zone 20m; 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: digicert.com.