xxxlutz.de

Checked 22 October 2026, 01:10 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 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

austin.ns.cloudflare.com, dahlia.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
austin.ns.cloudflare.com, dahlia.ns.cloudflare.com
NS in the zone
austin.ns.cloudflare.com, dahlia.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
austin.ns.cloudflare.com173.245.59.70 172.64.33.70 108.162.193.70 2803:f800:50::6ca2:c146 2a06:98c1:50::ac40:2146 2606:4700:58::adf5:3b46AS13335 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-
dahlia.ns.cloudflare.com173.245.58.89 108.162.192.89 172.64.32.89 2a06:98c1:50::ac40:2059 2803:f800:50::6ca2:c059 2606:4700:50::adf5:3a59AS13335 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: austin.ns.cloudflare.com, dahlia.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
austin.ns.cloudflare.com 173.245.59.70NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
austin.ns.cloudflare.com 172.64.33.70NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
austin.ns.cloudflare.com 108.162.193.70NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
austin.ns.cloudflare.com 2803:f800:50::6ca2:c146NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
austin.ns.cloudflare.com 2a06:98c1:50::ac40:2146NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
austin.ns.cloudflare.com 2606:4700:58::adf5:3b46NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dahlia.ns.cloudflare.com 173.245.58.89NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dahlia.ns.cloudflare.com 108.162.192.89NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dahlia.ns.cloudflare.com 172.64.32.89NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dahlia.ns.cloudflare.com 2a06:98c1:50::ac40:2059NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dahlia.ns.cloudflare.com 2803:f800:50::6ca2:c059NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dahlia.ns.cloudflare.com 2606:4700:50::adf5:3a59NOERROR, 14 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: austin.ns.cloudflare.com: "2026.10.2"; dahlia.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 2417993014 · primary austin.ns.cloudflare.com

Found

Primary (MNAME)
austin.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417993014
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
austin.ns.cloudflare.com (173.245.59.70)2417993014
austin.ns.cloudflare.com (172.64.33.70)2417993014
austin.ns.cloudflare.com (108.162.193.70)2417993014
austin.ns.cloudflare.com (2803:f800:50::6ca2:c146)2417993014
austin.ns.cloudflare.com (2a06:98c1:50::ac40:2146)2417993014
austin.ns.cloudflare.com (2606:4700:58::adf5:3b46)2417993014
dahlia.ns.cloudflare.com (173.245.58.89)2417993014
dahlia.ns.cloudflare.com (108.162.192.89)2417993014
dahlia.ns.cloudflare.com (172.64.32.89)2417993014
dahlia.ns.cloudflare.com (2a06:98c1:50::ac40:2059)2417993014
dahlia.ns.cloudflare.com (2803:f800:50::6ca2:c059)2417993014
dahlia.ns.cloudflare.com (2606:4700:50::adf5:3a59)2417993014

Checks

  • ✓ Serial 2417993014 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 austin.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 2417993014 is a Unix timestamp (2046-08-16 00:43 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
23 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 2C4CC7E4A0192C79…yes

DNSKEY in the zone

Key tagRoleAlgorithm
2371KSK (257)ECDSAP256SHA256 (13)
34505ZSK (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 2371 (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 2026-10-21 00:10 UTC and expires at 2026-10-23 02:10 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

17 records at the apex

Found

Read from
173.245.59.70:53
TypeValueTTL
SOAaustin.ns.cloudflare.com. dns.cloudflare.com. 2417993014 10000 2400 604800 18001800
NSaustin.ns.cloudflare.com.86400
NSdahlia.ns.cloudflare.com.86400
A172.64.153.15300
A104.18.34.241300
AAAA2606:4700:4404::6812:22f1300
AAAA2a06:98c1:3109::ac40:990f300
MX10 mx0162.ppsmtp.com.86400
MX10 mx0162.ppsmtp.de.86400
TXT"MS=ms40263169"300
TXT"atlassian-domain-verification=ROlhntWY6zejhkGyoC65cOjw5ho43f16wcdZynfwtKWEyJKaVDaA94mpkAoOJoHQ"300
TXT"ciscocidomainverification=79a146895b2296445c3b83db6f88a89791fedac39d9aa477f9b80fccc8d365b7"300
TXT"google-site-verification=1h_iL-dqD_ZDCJftZ3JPzbNZpxO2LmY2qyKkUVRhpHg"300
TXT"google-site-verification=BwT6v-OL0oX2l_sMSS0LbIItqXzesLE6_2HQtB_J78o"300
TXT"miro-verification=7ad101b41749c52d4737b99f098e4cd4fc15f87f"300
TXT"teamviewer-sso-verification=330d8d275e2f4559b9c1566fe81ee3ee"300
TXT"v=spf1 include:_spf0162.ppsmtp.net include:_spfxxxlutz.xxxlutz.at ip4:20.52.210.253 ip4:20.52.138.252 include:spf.nl2go.com ~all"300

Checks

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