kaspersky.de

Checked 21 October 2026, 23:02 UTC · via 8.8.8.8
✗Problems found
21 passed 1 warning 1 failed 6 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.kasperskylabs.net, ns2.kasperskylabs.net, ns3.kasperskylabs.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.kasperskylabs.net, ns2.kasperskylabs.net, ns3.kasperskylabs.net
NS in the zone
ns1.kasperskylabs.net, ns2.kasperskylabs.net, ns3.kasperskylabs.net
NameserverAddressesNetwork (AS)Glue
ns1.kasperskylabs.net37.203.128.6 101.46.136.140 82.202.185.166 2a03:2480:8022::6 2405:f080:1200:ae:9780:e3a4:56c7:a92AS200107 KL-EXT - Kaspersky Lab Switzerland GmbH, CH AS136907 HWCLOUDS-AS-AP - HUAWEI CLOUDS, HK AS200107 KL-EXT - Kaspersky Lab Switzerland GmbH, CH AS200107 KL-EXT - Kaspersky Lab Switzerland GmbH, CH AS136907 HWCLOUDS-AS-AP - HUAWEI CLOUDS, HK-
ns2.kasperskylabs.net101.46.137.92 77.74.183.10 2001:1900:222b::2AS136907 HWCLOUDS-AS-AP - HUAWEI CLOUDS, HK AS200107 KL-EXT - Kaspersky Lab Switzerland GmbH, CH AS3356 LEVEL3 - Level 3 Parent, LLC, US-
ns3.kasperskylabs.net4.28.136.50 185.201.3.4 2a03:2480:8034::10AS3356 LEVEL3 - Level 3 Parent, LLC, US AS200107 KL-EXT - Kaspersky Lab Switzerland GmbH, CH AS200107 KL-EXT - Kaspersky Lab Switzerland GmbH, CH-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.kasperskylabs.net, ns2.kasperskylabs.net, ns3.kasperskylabs.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 7 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS136907 (HWCLOUDS-AS-AP - HUAWEI CLOUDS, HK): 3 addresses; AS200107 (KL-EXT - Kaspersky Lab Switzerland GmbH, CH): 6 addresses; AS3356 (LEVEL3 - Level 3 Parent, LLC, US): 2 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

fail

10 of 11 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.kasperskylabs.net 37.203.128.6no responsenono / no--
ns1.kasperskylabs.net 101.46.136.140NOERROR, 32 ms, authoritativenoyes / yesrefused666
ns1.kasperskylabs.net 82.202.185.166NOERROR, 9 ms, authoritativenoyes / yesrefused666
ns1.kasperskylabs.net 2a03:2480:8022::6NOERROR, 199 ms, authoritativenoyes / yesrefused666
ns1.kasperskylabs.net 2405:f080:1200:ae:9780:e3a4:56c7:a92NOERROR, 27 ms, authoritativenoyes / yesrefused666
ns2.kasperskylabs.net 101.46.137.92NOERROR, 32 ms, authoritativenoyes / yesrefused666
ns2.kasperskylabs.net 77.74.183.10NOERROR, 41 ms, authoritativenoyes / yesrefused666
ns2.kasperskylabs.net 2001:1900:222b::2NOERROR, 103 ms, authoritativenoyes / yesrefused666
ns3.kasperskylabs.net 4.28.136.50NOERROR, 109 ms, authoritativenoyes / yesrefused666
ns3.kasperskylabs.net 185.201.3.4NOERROR, 158 ms, authoritativenoyes / yesrefused666
ns3.kasperskylabs.net 2a03:2480:8034::10NOERROR, 43 ms, authoritativenoyes / yesrefused666

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: ns1.kasperskylabs.net (37.203.128.6): read udp 46.225.38.91:40325->37.203.128.6:53: i/o timeout.
    #14
  • ✓ 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: ns1.kasperskylabs.net: "666"; ns2.kasperskylabs.net: "666"; ns3.kasperskylabs.net: "666".
    #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

info

serial 2026102101 · primary dnsmaster.kasperskylabs.net

Found

Primary (MNAME)
dnsmaster.kasperskylabs.net
Contact (RNAME)
dnsadmin.kaspersky.com
Serial
2026102101
Refresh / retry
7200 s / 3600 s
Expire
8640000 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.kasperskylabs.net (101.46.136.140)2026102101
ns1.kasperskylabs.net (82.202.185.166)2026102101
ns1.kasperskylabs.net (2a03:2480:8022::6)2026102101
ns1.kasperskylabs.net (2405:f080:1200:ae:9780:e3a4:56c7:a92)2026102101
ns2.kasperskylabs.net (101.46.137.92)2026102101
ns2.kasperskylabs.net (77.74.183.10)2026102101
ns2.kasperskylabs.net (2001:1900:222b::2)2026102101
ns3.kasperskylabs.net (4.28.136.50)2026102101
ns3.kasperskylabs.net (185.201.3.4)2026102101
ns3.kasperskylabs.net (2a03:2480:8034::10)2026102101

Checks

  • ✓ Serial 2026102101 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 1h, expire 100d, negative TTL 1d.
  • i
    Hidden master
    The primary nameserver dnsmaster.kasperskylabs.net is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact dnsadmin@kaspersky.com #25
    The SOA RNAME dnsadmin.kaspersky.com means dnsadmin@kaspersky.com.
  • ✓ Date-based serial #26
    The serial 2026102101 follows the YYYYMMDDnn convention (2026-10-21).

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

18 records at the apex

Found

Read from
101.46.136.140:53
TypeValueTTL
SOAdnsmaster.kasperskylabs.net. dnsadmin.kaspersky.com. 2026102101 7200 3600 8640000 864003600
NSns2.kasperskylabs.net.3600
NSns3.kasperskylabs.net.3600
NSns1.kasperskylabs.net.3600
A185.85.15.463600
MX20 mx15.kaspersky-labs.com.3600
MX20 mx13.kaspersky-labs.com.3600
MX10 mx16.kaspersky-labs.com.3600
MX20 mx12.kaspersky-labs.com.3600
TXT"ghm3zq6hsqcxn336kf5zp5y1w957ry8x"3600
TXT"_tbt76qe2crflnzn6spofpjtfrdp0fzk"3600
TXT"v=spf1 redirect=kaspersky.com"3600
TXT"_e98gn0em99268vgy8o9jbl60xj83iu7"3600
TXT"_globalsign-domain-verification=69Skat4HEHuo5wPibHrgz8czQM132xl6EbAmKKOJsN"3600
TXT"87k1cfq691z002h916gcqmlg9y19hjdc"3600
TXT"MS=ms82510777"3600
TXT"facebook-domain-verification=59n7mse9v774kzrb9t5vpnvtin39qs"3600
TXT"_ekphws8ms2606zjwib53ipz36xzdxxj"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