karls.de

Checked 21 October 2026, 23:02 UTC · via 8.8.8.8
!Passed with warnings
22 passed 1 warning 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

ns1071.ui-dns.biz, ns1071.ui-dns.com, ns1071.ui-dns.de, ns1071.ui-dns.org

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1071.ui-dns.biz, ns1071.ui-dns.com, ns1071.ui-dns.de, ns1071.ui-dns.org
NS in the zone
ns1071.ui-dns.biz, ns1071.ui-dns.com, ns1071.ui-dns.de, ns1071.ui-dns.org
NameserverAddressesNetwork (AS)Glue
ns1071.ui-dns.biz185.132.33.71 2607:f1c0:fe:53:185:132:33:71AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1071.ui-dns.com185.132.34.71 2607:f1c0:fe:53:185:132:34:71AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1071.ui-dns.de185.132.32.71 2607:f1c0:fe:53:185:132:32:71AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1071.ui-dns.org185.132.35.71 2607:f1c0:fe:53:185:132:35:71AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1071.ui-dns.biz, ns1071.ui-dns.com, ns1071.ui-dns.de, ns1071.ui-dns.org.
  • ✓ 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.
  • i
    One address family in one network
    all IPv6 addresses are in 2607:f1c0:fe::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .biz, .com, .de, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1071.ui-dns.biz 185.132.33.71NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1071.ui-dns.biz 2607:f1c0:fe:53:185:132:33:71NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1071.ui-dns.com 185.132.34.71NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1071.ui-dns.com 2607:f1c0:fe:53:185:132:34:71NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1071.ui-dns.de 185.132.32.71NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1071.ui-dns.de 2607:f1c0:fe:53:185:132:32:71NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1071.ui-dns.org 185.132.35.71NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1071.ui-dns.org 2607:f1c0:fe:53:185:132:35:71NOERROR, 5 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

Checks

  • ✓ All respond #14
    All 8 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: ns1071.ui-dns.biz: "Served by PowerDNS - https://www.powerdns.com/"; ns1071.ui-dns.com: "Served by PowerDNS - https://www.powerdns.com/"; ns1071.ui-dns.de: "Served by PowerDNS - https://www.powerdns.com/"; ns1071.ui-dns.org: "Served by PowerDNS - https://www.powerdns.com/".
    #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 2017073418 · primary ns1071.ui-dns.de

Found

Primary (MNAME)
ns1071.ui-dns.de
Contact (RNAME)
hostmaster.1und1.de
Serial
2017073418
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1071.ui-dns.biz (185.132.33.71)2017073418
ns1071.ui-dns.biz (2607:f1c0:fe:53:185:132:33:71)2017073418
ns1071.ui-dns.com (185.132.34.71)2017073418
ns1071.ui-dns.com (2607:f1c0:fe:53:185:132:34:71)2017073418
ns1071.ui-dns.de (185.132.32.71)2017073418
ns1071.ui-dns.de (2607:f1c0:fe:53:185:132:32:71)2017073418
ns1071.ui-dns.org (185.132.35.71)2017073418
ns1071.ui-dns.org (2607:f1c0:fe:53:185:132:35:71)2017073418

Checks

  • ✓ Serial 2017073418 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1071.ui-dns.de is one of the listed nameservers.
  • ✓ Contact hostmaster@1und1.de #25
    The SOA RNAME hostmaster.1und1.de means hostmaster@1und1.de.
  • ✓ Timestamp serial #26
    The serial 2017073418 is a Unix timestamp (2033-12-01 18:10 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

info

20 records at the apex

Found

Read from
185.132.33.71:53
TypeValueTTL
SOAns1071.ui-dns.de. hostmaster.1und1.de. 2017073418 28800 7200 604800 30086400
NSns1071.ui-dns.org.172800
NSns1071.ui-dns.de.172800
NSns1071.ui-dns.biz.172800
NSns1071.ui-dns.com.172800
A92.51.146.2193600
MX10 karls-de.mail.protection.outlook.com.300
TXT"v=spf1 mx ip4:176.9.11.254 ip4:92.51.146.219 include:mailgun.org include:spf.protection.outlook.com include:spf.academymaker.de -all"300
TXT"_globalsign-domain-verification=m9vTUBr6N31WiswFqb6LYOM1zIilmD6UykXKo0coEu"60
TXT"anthropic-domain-verification-85hcks=0rb3wxJDDT8R4qiBBia0yqJnB"3600
TXT"google-site-verification=_0q2-qtmxSf9-ZhEBunwzaSP5hkg5qw6T6CYKfWtRNg"3600
TXT"518566f31a312600e4522c22e51980c7e1cc6d9782551c7f7b75a2eed90814a"60
TXT"google-site-verification=ggnhhQYm2DnCsnJ5pA71xaUlpXY1MvteR8bDjPkGka8"3600
TXT"MS=AC5C2D708B7B9AB8E8792A13A94A68610987F965"3600
TXT"atlassian-domain-verification=aLHVbtSJID4654ONmL19PPOH3MNwLu6GNyNiuowM8GJ3xLxP869h/CHXzfQ/kU8u"3600
TXT"apple-domain-verification=h0QsODz7pg6ojnSO"3600
TXT"google-site-verification=eHTJ-PcNn6fm-TAfbDLoLq_hDCsDMsSKsHjBTYPuF0Y"60
TXT"klaviyo-site-verification=VcBJvy"3600
TXT"google-site-verification=KmnWCjdfqw2TOVB2nIjmpLg_NjGBFQ85VwyWRVxI86s"3600
TXT"google-site-verification=EJCT1s2lnbThlAh0X2n6bNTI3Esrv13MmNuglEyfCzw"60

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 5m, NS 2d. The NS TTL at the parent is 1d and in the zone 2d; resolvers may use either.
  • ✓ 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