Domain report: lease-a-bike.de

Registration

info

.de country-code

Found

TLD: .de (country-code)
ICANN policies apply: no

Checks

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.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.
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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

cullen.ns.cloudflare.com, dora.ns.cloudflare.com

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: cullen.ns.cloudflare.com, dora.ns.cloudflare.com
NS in the zone: cullen.ns.cloudflare.com, dora.ns.cloudflare.com

Nameserver	Addresses	Network (AS)	Glue
cullen.ns.cloudflare.com	172.64.35.91 162.159.44.91 108.162.195.91 2606:4700:58::a29f:2c5b 2a06:98c1:50::ac40:235b 2803:f800:50::6ca2:c35b	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 AS13335 CLOUDFLARENET - Cloudflare, Inc., US	-
dora.ns.cloudflare.com	108.162.192.108 172.64.32.108 173.245.58.108 2606:4700:50::adf5:3a6c 2a06:98c1:50::ac40:206c 2803:f800:50::6ca2:c06c	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 AS13335 CLOUDFLARENET - Cloudflare, Inc., US	-

Checks

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2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: cullen.ns.cloudflare.com, dora.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.
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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
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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

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
cullen.ns.cloudflare.com 172.64.35.91	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
cullen.ns.cloudflare.com 162.159.44.91	NOERROR, 32 ms, authoritative	no	yes / yes	refused	2026.10.2
cullen.ns.cloudflare.com 108.162.195.91	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
cullen.ns.cloudflare.com 2606:4700:58::a29f:2c5b	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
cullen.ns.cloudflare.com 2a06:98c1:50::ac40:235b	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
cullen.ns.cloudflare.com 2803:f800:50::6ca2:c35b	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
dora.ns.cloudflare.com 108.162.192.108	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
dora.ns.cloudflare.com 172.64.32.108	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
dora.ns.cloudflare.com 173.245.58.108	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
dora.ns.cloudflare.com 2606:4700:50::adf5:3a6c	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
dora.ns.cloudflare.com 2a06:98c1:50::ac40:206c	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
dora.ns.cloudflare.com 2803:f800:50::6ca2:c06c	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2

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: cullen.ns.cloudflare.com: "2026.10.2"; dora.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 2417105722 · primary cullen.ns.cloudflare.com

Found

Primary (MNAME): cullen.ns.cloudflare.com
Contact (RNAME): dns.cloudflare.com
Serial: 2417105722
Refresh / retry: 10000 s / 2400 s
Expire: 604800 s
Negative TTL: 1800 s

Serial per nameserver

Nameserver	Serial
cullen.ns.cloudflare.com (172.64.35.91)	2417105722
cullen.ns.cloudflare.com (162.159.44.91)	2417105722
cullen.ns.cloudflare.com (108.162.195.91)	2417105722
cullen.ns.cloudflare.com (2606:4700:58::a29f:2c5b)	2417105722
cullen.ns.cloudflare.com (2a06:98c1:50::ac40:235b)	2417105722
cullen.ns.cloudflare.com (2803:f800:50::6ca2:c35b)	2417105722
dora.ns.cloudflare.com (108.162.192.108)	2417105722
dora.ns.cloudflare.com (172.64.32.108)	2417105722
dora.ns.cloudflare.com (173.245.58.108)	2417105722
dora.ns.cloudflare.com (2606:4700:50::adf5:3a6c)	2417105722
dora.ns.cloudflare.com (2a06:98c1:50::ac40:206c)	2417105722
dora.ns.cloudflare.com (2803:f800:50::6ca2:c06c)	2417105722

Checks

✓ Serial 2417105722 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 cullen.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 2417105722 is a Unix timestamp (2046-08-05 18:15 UTC).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver: yes
Signatures valid until: 23 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
2371	ECDSAP256SHA256 (13)	SHA256 8C6C68412FA1372E…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
2371	KSK (257)	ECDSAP256SHA256 (13)
34505	ZSK (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 2026-10-20 22:11 UTC and expires at 2026-10-23 00:11 UTC.

Records

info

18 records at the apex

Found

Read from: 172.64.35.91:53

Type	Value	TTL
SOA	cullen.ns.cloudflare.com. dns.cloudflare.com. 2417105722 10000 2400 604800 1800	1800
NS	cullen.ns.cloudflare.com.	86400
NS	dora.ns.cloudflare.com.	86400
A	172.64.149.162	300
A	104.18.38.94	300
AAAA	2606:4700:4402::ac40:95a2	300
AAAA	2606:4700:4409::6812:265e	300
MX	1 aspmx.l.google.com.	10800
MX	10 alt3.aspmx.l.google.com.	10800
MX	10 alt4.aspmx.l.google.com.	10800
MX	5 alt1.aspmx.l.google.com.	10800
MX	5 alt2.aspmx.l.google.com.	10800
TXT	"MS=ms46735767"	300
TXT	"Sendinblue-code:8a5d2534372fed4275062d70df77a25e"	300
TXT	"brevo-code:2bc7a9fd5a87af4c94820f399640026a"	300
TXT	"facebook-domain-verification=t4idp0rki99tb1v5fldjhbd4yk3ku1"	300
TXT	"google-site-verification=JmLGn3QOmI__fq1vw0TgArqTmdIDCynfJeP1kMN5tEU"	300
TXT	"v=spf1 include:_spf.google.com include:6112540.spf05.hubspotemail.net include:mail.zendesk.com include:spf.sendinblue.com ~all"	300

Checks

✓ TTLs within range #32

TTLs: A 5m, AAAA 5m, MX 3h, NS 1d.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
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Wildcard record

A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.

#34
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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