lufthansa.de

Checked 21 October 2026, 23:20 UTC · via 8.8.8.8
iAll checks passed
27 passed 0 warnings 0 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

udns1.cscudns.com, udns2.cscudns.org

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
udns1.cscudns.com, udns2.cscudns.org
NS in the zone
udns1.cscudns.com, udns2.cscudns.org
NameserverAddressesNetwork (AS)Glue
udns1.cscudns.com204.74.66.14 2001:502:4612::20eAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
udns2.cscudns.org204.74.104.20 2610:a1:3214::53AS399153 SECURITYSERVICES - Vercara, LLC, US AS399154 SECURITYSERVICES - Vercara, LLC, US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: udns1.cscudns.com, udns2.cscudns.org.
    #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 2 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS12008 (VERCARA - Vercara, LLC, US): 2 addresses; AS399153 (SECURITYSERVICES - Vercara, LLC, US): 1 address; AS399154 (SECURITYSERVICES - Vercara, LLC, US): 1 address.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
udns1.cscudns.com 204.74.66.14NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
udns1.cscudns.com 2001:502:4612::20eNOERROR, 27 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
udns2.cscudns.org 204.74.104.20NOERROR, 19 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
udns2.cscudns.org 2610:a1:3214::53NOERROR, 14 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 4 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: udns1.cscudns.com: "UltraDNS Nameserver"; udns2.cscudns.org: "UltraDNS Nameserver".
    #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 2019103412 · primary udns1.cscudns.com

Found

Primary (MNAME)
udns1.cscudns.com
Contact (RNAME)
hostmaster.cscdns.net
Serial
2019103412
Refresh / retry
28800 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
udns1.cscudns.com (204.74.66.14)2019103412
udns1.cscudns.com (2001:502:4612::20e)2019103412
udns2.cscudns.org (204.74.104.20)2019103412
udns2.cscudns.org (2610:a1:3214::53)2019103412

Checks

  • ✓ Serial 2019103412 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver udns1.cscudns.com is one of the listed nameservers.
  • ✓ Contact hostmaster@cscdns.net #25
    The SOA RNAME hostmaster.cscdns.net means hostmaster@cscdns.net.
  • ✓ Timestamp serial #26
    The serial 2019103412 is a Unix timestamp (2033-12-25 06:03 UTC).

DNSSEC

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
3727ECDSAP256SHA256 (13)SHA256 B461C4047895F824…yes

DNSKEY in the zone

Key tagRoleAlgorithm
47433ZSK (256)ECDSAP256SHA256 (13)
13314ZSK (256)ECDSAP256SHA256 (13)
3727KSK (257)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 3727 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-10-31 #30
    The earliest DNSKEY/SOA signature expires at 2026-10-31 23:03 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

4 records at the apex

Found

Read from
204.74.66.14:53
TypeValueTTL
SOAudns1.cscudns.com. hostmaster.cscdns.net. 2019103412 28800 7200 1209600 864003600
NSudns1.cscudns.com.86400
NSudns2.cscudns.org.86400
A20.101.251.23286400

Checks

  • ✓ TTLs within range #32
    TTLs: A 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