care.de

Checked 21 October 2026, 22:06 UTC · via 8.8.8.8
!Passed with warnings
23 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

carlos.ns.cloudflare.com, robin.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
carlos.ns.cloudflare.com, robin.ns.cloudflare.com
NS in the zone
carlos.ns.cloudflare.com, robin.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
carlos.ns.cloudflare.com172.64.35.112 108.162.195.112 162.159.44.112 2606:4700:58::a29f:2c70 2803:f800:50::6ca2:c370 2a06:98c1:50::ac40:2370AS13335 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-
robin.ns.cloudflare.com172.64.32.218 173.245.58.218 108.162.192.218 2a06:98c1:50::ac40:20da 2606:4700:50::adf5:3ada 2803:f800:50::6ca2:c0daAS13335 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: carlos.ns.cloudflare.com, robin.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
carlos.ns.cloudflare.com 172.64.35.112NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
carlos.ns.cloudflare.com 108.162.195.112NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
carlos.ns.cloudflare.com 162.159.44.112NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
carlos.ns.cloudflare.com 2606:4700:58::a29f:2c70NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
carlos.ns.cloudflare.com 2803:f800:50::6ca2:c370NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
carlos.ns.cloudflare.com 2a06:98c1:50::ac40:2370NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 172.64.32.218NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 173.245.58.218NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 108.162.192.218NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 2a06:98c1:50::ac40:20daNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 2606:4700:50::adf5:3adaNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 2803:f800:50::6ca2:c0daNOERROR, 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: carlos.ns.cloudflare.com: "2026.10.2"; robin.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 2417452903 · primary carlos.ns.cloudflare.com

Found

Primary (MNAME)
carlos.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417452903
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
carlos.ns.cloudflare.com (172.64.35.112)2417452903
carlos.ns.cloudflare.com (108.162.195.112)2417452903
carlos.ns.cloudflare.com (162.159.44.112)2417452903
carlos.ns.cloudflare.com (2606:4700:58::a29f:2c70)2417452903
carlos.ns.cloudflare.com (2803:f800:50::6ca2:c370)2417452903
carlos.ns.cloudflare.com (2a06:98c1:50::ac40:2370)2417452903
robin.ns.cloudflare.com (172.64.32.218)2417452903
robin.ns.cloudflare.com (173.245.58.218)2417452903
robin.ns.cloudflare.com (108.162.192.218)2417452903
robin.ns.cloudflare.com (2a06:98c1:50::ac40:20da)2417452903
robin.ns.cloudflare.com (2606:4700:50::adf5:3ada)2417452903
robin.ns.cloudflare.com (2803:f800:50::6ca2:c0da)2417452903

Checks

  • ✓ Serial 2417452903 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 carlos.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 2417452903 is a Unix timestamp (2046-08-09 18:41 UTC).

DNSSEC

warn

Signed, but no DS at parent

Found

Validated by resolver
no
Denial of existence
NSEC
Signatures valid until
22 October 2026

DNSKEY in the zone

Key tagRoleAlgorithm
2371KSK (257)ECDSAP256SHA256 (13)
34505ZSK (256)ECDSAP256SHA256 (13)

Checks

  • !
    Signed but not delegated securely
    The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.
    #27
  • ✓ 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 21:06 UTC and expires at 2026-10-22 23:06 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

info

21 records at the apex

Found

Read from
172.64.35.112:53
TypeValueTTL
SOAcarlos.ns.cloudflare.com. dns.cloudflare.com. 2417452903 10000 2400 604800 18001800
NScarlos.ns.cloudflare.com.86400
NSrobin.ns.cloudflare.com.86400
A104.20.30.29300
A172.66.171.183300
AAAA2606:4700:10::ac42:abb7300
AAAA2606:4700:10::6814:1e1d300
MX10 mxa.global.inbound.cf-emailsecurity.net.300
MX10 mxb.global.inbound.cf-emailsecurity.net.300
MX20 care-de.mail.protection.outlook.com.300
TXT"MS=ms99839270"300
TXT"P9gNXqEbddbq++TS9q4Di7U8Ts6w..."300
TXT"ZOOM_verify_fxWmWn3PKXaH2sgVvehWKz"300
TXT"apple-domain-verification=HPH2BbJ55iQhjO9L"300
TXT"cisco-ci-domain-verification=2c0689e6840344eac6de55f78d4da0acc4387eeb6aefdc8fd3dbd74ec765dd3c"300
TXT"helpdesk.care.de"300
TXT"mailerlite-domain-verification=ae9163693dcdd1f1aa673f4ea6bb8010f8e2ea70"300
TXT"ms-domain-verification=38eefb5f-3b3d-46c2-8b7d-286b0d54fdf8"300
TXT"samsung-domain-verification=d15268cf-329e-4b41-b63a-696e6a97ca0d"300
TXT"teamviewer-sso-verification=f4335409408b4134a1442541d4410d5d"300
TXT"v=spf1 include:spf.mailjet.com include:spf.protection.outlook.com include:amazonses.com include:agenturserver.de include:spfa.myconvento.com include:_spf.mlsend.com include:srv2.de include:_spf.salesforce.com include:sendgrid.net -all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, NS 1d.
  • ✓ 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