online.de

Checked 21 October 2026, 23:41 UTC · via 8.8.8.8
!Passed with warnings
19 passed 2 warnings 0 failed 8 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

warn

ns7.schlund.de, ns8.schlund.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns7.schlund.de, ns8.schlund.de
NS in the zone
ns1023.ui-dns.de, ns1049.ui-dns.org, ns1073.ui-dns.biz, ns1077.ui-dns.com
NameserverAddressesNetwork (AS)Glue
ns1023.ui-dns.de (zone only)185.132.32.23 2607:f1c0:fe:53:185:132:32:23AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1049.ui-dns.org (zone only)185.132.35.49 2607:f1c0:fe:53:185:132:35:49AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1073.ui-dns.biz (zone only)185.132.33.73 2607:f1c0:fe:53:185:132:33:73AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1077.ui-dns.com (zone only)185.132.34.77 2607:f1c0:fe:53:185:132:34:77AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns7.schlund.de (parent only)185.132.32.40 2607:f1c0:fe:53:185:132:32:40AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns8.schlund.de (parent only)185.132.33.39 2607:f1c0:fe:53:185:132:33:39AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns7.schlund.de, ns8.schlund.de.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns7.schlund.de, ns8.schlund.de; only in the zone: ns1023.ui-dns.de, ns1049.ui-dns.org, ns1073.ui-dns.biz, ns1077.ui-dns.com. ns1023.ui-dns.de, ns1049.ui-dns.org, ns1073.ui-dns.biz, ns1077.ui-dns.com, ns7.schlund.de, ns8.schlund.de report NS ns1023.ui-dns.de ns1049.ui-dns.org ns1073.ui-dns.biz ns1077.ui-dns.com.
    #7
  • ✓ 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): 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 .de
    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

info

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1023.ui-dns.de 185.132.32.23NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1023.ui-dns.de 2607:f1c0:fe:53:185:132:32:23NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1049.ui-dns.org 185.132.35.49NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1049.ui-dns.org 2607:f1c0:fe:53:185:132:35:49NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1073.ui-dns.biz 185.132.33.73NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1073.ui-dns.biz 2607:f1c0:fe:53:185:132:33:73NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1077.ui-dns.com 185.132.34.77NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1077.ui-dns.com 2607:f1c0:fe:53:185:132:34:77NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns7.schlund.de 185.132.32.40NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns7.schlund.de 2607:f1c0:fe:53:185:132:32:40NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns8.schlund.de 185.132.33.39NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns8.schlund.de 2607:f1c0:fe:53:185:132:33:39NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1023.ui-dns.de: "Served by PowerDNS - https://www.powerdns.com/"; ns1049.ui-dns.org: "Served by PowerDNS - https://www.powerdns.com/"; ns1073.ui-dns.biz: "Served by PowerDNS - https://www.powerdns.com/"; ns1077.ui-dns.com: "Served by PowerDNS - https://www.powerdns.com/"; ns7.schlund.de: "Served by PowerDNS - https://www.powerdns.com/"; ns8.schlund.de: "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 2017098410 · primary ns1023.ui-dns.de

Found

Primary (MNAME)
ns1023.ui-dns.de
Contact (RNAME)
hostmaster.1und1.com
Serial
2017098410
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns1023.ui-dns.de (185.132.32.23)2017098410
ns1023.ui-dns.de (2607:f1c0:fe:53:185:132:32:23)2017098410
ns1049.ui-dns.org (185.132.35.49)2017098410
ns1049.ui-dns.org (2607:f1c0:fe:53:185:132:35:49)2017098410
ns1073.ui-dns.biz (185.132.33.73)2017098410
ns1073.ui-dns.biz (2607:f1c0:fe:53:185:132:33:73)2017098410
ns1077.ui-dns.com (185.132.34.77)2017098410
ns1077.ui-dns.com (2607:f1c0:fe:53:185:132:34:77)2017098410
ns7.schlund.de (185.132.32.40)2017098410
ns7.schlund.de (2607:f1c0:fe:53:185:132:32:40)2017098410
ns8.schlund.de (185.132.33.39)2017098410
ns8.schlund.de (2607:f1c0:fe:53:185:132:33:39)2017098410

Checks

  • ✓ Serial 2017098410 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1023.ui-dns.de is one of the listed nameservers.
  • ✓ Contact hostmaster@1und1.com #25
    The SOA RNAME hostmaster.1und1.com means hostmaster@1und1.com.
  • ✓ Timestamp serial #26
    The serial 2017098410 is a Unix timestamp (2033-12-02 01:06 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

16 records at the apex

Found

Read from
185.132.32.23:53
TypeValueTTL
SOAns1023.ui-dns.de. hostmaster.1und1.com. 2017098410 28800 7200 604800 60086400
NSns1023.ui-dns.de.86400
NSns1077.ui-dns.com.86400
NSns1049.ui-dns.org.86400
NSns1073.ui-dns.biz.86400
A212.227.0.723600
MX10 mx01.emig.kundenserver.de.3600
MX10 mx00.emig.kundenserver.de.3600
TXT"s42582890._domainkey.oneline.de"3600
TXT"hl7mv5qkd1bj28xmc7qknxlp9p0gpvrt"600
TXT"_d8ji46k36r3rhc44pcxcaxvhq3o0ygo"600
TXT"q42582890._domainkey.oneline.de"3600
TXT"pg2jcc97ckl2647yh3c76pc1m0hlxqlv"600
TXT"v=spf1 include:_spf.kundenserver.de ~all"3600
TXT"_iyf7q3dh50i2cd6hk1eehxwsn0i5tvv"600
TXT"google-site-verification=-qyKhlvoCAobDl5fnThGnSTo8q7JHtEJl101AGQ4v5g"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, 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