Domain report: lifeline.de

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

kayleigh.ns.cloudflare.com, lennox.ns.cloudflare.com

Found

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

Nameserver	Addresses	Network (AS)	Glue
kayleigh.ns.cloudflare.com	172.64.34.92 108.162.194.92 162.159.38.92 2803:f800:50::6ca2:c25c 2a06:98c1:50::ac40:225c 2606:4700:50::a29f:265c	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	-
lennox.ns.cloudflare.com	172.64.35.214 108.162.195.214 162.159.44.214 2606:4700:58::a29f:2cd6 2a06:98c1:50::ac40:23d6 2803:f800:50::6ca2:c3d6	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

i

2 nameservers

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

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
kayleigh.ns.cloudflare.com 172.64.34.92	NOERROR, 16 ms, authoritative	no	yes / yes	refused	2026.10.2
kayleigh.ns.cloudflare.com 108.162.194.92	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
kayleigh.ns.cloudflare.com 162.159.38.92	NOERROR, 32 ms, authoritative	no	yes / yes	refused	2026.10.2
kayleigh.ns.cloudflare.com 2803:f800:50::6ca2:c25c	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
kayleigh.ns.cloudflare.com 2a06:98c1:50::ac40:225c	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
kayleigh.ns.cloudflare.com 2606:4700:50::a29f:265c	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
lennox.ns.cloudflare.com 172.64.35.214	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
lennox.ns.cloudflare.com 108.162.195.214	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
lennox.ns.cloudflare.com 162.159.44.214	NOERROR, 32 ms, authoritative	no	yes / yes	refused	2026.10.2
lennox.ns.cloudflare.com 2606:4700:58::a29f:2cd6	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
lennox.ns.cloudflare.com 2a06:98c1:50::ac40:23d6	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
lennox.ns.cloudflare.com 2803:f800:50::6ca2:c3d6	NOERROR, 14 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: kayleigh.ns.cloudflare.com: "2026.10.2"; lennox.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 2415825430 · primary kayleigh.ns.cloudflare.com

Found

Primary (MNAME): kayleigh.ns.cloudflare.com
Contact (RNAME): dns.cloudflare.com
Serial: 2415825430
Refresh / retry: 10000 s / 2400 s
Expire: 604800 s
Negative TTL: 1800 s

Serial per nameserver

Nameserver	Serial
kayleigh.ns.cloudflare.com (172.64.34.92)	2415825430
kayleigh.ns.cloudflare.com (108.162.194.92)	2415825430
kayleigh.ns.cloudflare.com (162.159.38.92)	2415825430
kayleigh.ns.cloudflare.com (2803:f800:50::6ca2:c25c)	2415825430
kayleigh.ns.cloudflare.com (2a06:98c1:50::ac40:225c)	2415825430
kayleigh.ns.cloudflare.com (2606:4700:50::a29f:265c)	2415825430
lennox.ns.cloudflare.com (172.64.35.214)	2415825430
lennox.ns.cloudflare.com (108.162.195.214)	2415825430
lennox.ns.cloudflare.com (162.159.44.214)	2415825430
lennox.ns.cloudflare.com (2606:4700:58::a29f:2cd6)	2415825430
lennox.ns.cloudflare.com (2a06:98c1:50::ac40:23d6)	2415825430
lennox.ns.cloudflare.com (2803:f800:50::6ca2:c3d6)	2415825430

Checks

✓ Serial 2415825430 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 kayleigh.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 2415825430 is a Unix timestamp (2046-07-21 22:37 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

32 records at the apex

Found

Read from: 172.64.34.92:53

Type	Value	TTL
SOA	kayleigh.ns.cloudflare.com. dns.cloudflare.com. 2415825430 10000 2400 604800 1800	1800
NS	kayleigh.ns.cloudflare.com.	86400
NS	lennox.ns.cloudflare.com.	86400
A	104.26.1.129	300
A	172.67.74.144	300
A	104.26.0.129	300
AAAA	2606:4700:20::681a:81	300
AAAA	2606:4700:20::ac43:4a90	300
AAAA	2606:4700:20::681a:181	300
MX	44 route1.mx.cloudflare.net.	300
MX	96 route3.mx.cloudflare.net.	300
MX	98 route2.mx.cloudflare.net.	300
TXT	"google-site-verification=GE25BXZglHwszCgb6D6mwoX9Xj8kYZP5PwQyTWdui3Y"	300
TXT	"google-site-verification=WitCjX859BKqJmwXeHZw-Lvttc6hn_BarRueQOBcf8U"	300
TXT	"v=spf1 mx a:mail.boreus.de a:mail.boreus-status.de a:custmail-out.boreus.de a:gv-web2.fmg.boreus.de include:_spf.mx.cloudflare.net include:amazonses.com include:newsletter.dcmservice.de ~all"	300
CAA	0 issue "amazon.com"	300
CAA	0 issue "amazontrust.com"	300
CAA	0 issue "awstrust.com"	300
CAA	0 issue "comodoca.com"	300
CAA	0 issue "digicert.com; cansignhttpexchanges=yes"	300
CAA	0 issue "letsencrypt.org"	300
CAA	0 issue "pki.goog; cansignhttpexchanges=yes"	300
CAA	0 issue "ssl.com"	300
CAA	0 issuewild "amazon.com"	300
CAA	0 issuewild "amazonaws.com"	300
CAA	0 issuewild "amazontrust.com"	300
CAA	0 issuewild "awstrust.com"	300
CAA	0 issuewild "comodoca.com"	300
CAA	0 issuewild "digicert.com; cansignhttpexchanges=yes"	300
CAA	0 issuewild "letsencrypt.org"	300
CAA	0 issuewild "pki.goog; cansignhttpexchanges=yes"	300
CAA	0 issuewild "ssl.com"	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.
✓ CAA restricts issuance #35

Certificates may be issued by: amazon.com, amazontrust.com, awstrust.com, comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com, amazonaws.com.