little-bird.de

Checked 21 October 2026, 23:20 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 4 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

pass

ns-ic.ui-dns.biz, ns-ic.ui-dns.com, ns-ic.ui-dns.de, ns-ic.ui-dns.org

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns-ic.ui-dns.biz, ns-ic.ui-dns.com, ns-ic.ui-dns.de, ns-ic.ui-dns.org
NS in the zone
ns-ic.ui-dns.biz, ns-ic.ui-dns.com, ns-ic.ui-dns.de, ns-ic.ui-dns.org
NameserverAddressesNetwork (AS)Glue
ns-ic.ui-dns.biz217.160.81.236 2001:8d8:fe:53::81:236AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-
ns-ic.ui-dns.com185.132.34.236 2607:f1c0:fe:53::34:236AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns-ic.ui-dns.de217.160.80.236 2001:8d8:fe:53::80:236AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-
ns-ic.ui-dns.org185.132.35.236 2607:f1c0:fe:53::35:236AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-ic.ui-dns.biz, ns-ic.ui-dns.com, ns-ic.ui-dns.de, ns-ic.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.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 4 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 4 addresses; AS8560 (IONOS-AS - IONOS SE, DE): 4 addresses.
  • ✓ 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
ns-ic.ui-dns.biz 217.160.81.236NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ic.ui-dns.biz 2001:8d8:fe:53::81:236NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ic.ui-dns.com 185.132.34.236NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ic.ui-dns.com 2607:f1c0:fe:53::34:236NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ic.ui-dns.de 217.160.80.236NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ic.ui-dns.de 2001:8d8:fe:53::80:236NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ic.ui-dns.org 185.132.35.236NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ic.ui-dns.org 2607:f1c0:fe:53::35:236NOERROR, 3 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: ns-ic.ui-dns.biz: "Served by PowerDNS - https://www.powerdns.com/"; ns-ic.ui-dns.com: "Served by PowerDNS - https://www.powerdns.com/"; ns-ic.ui-dns.de: "Served by PowerDNS - https://www.powerdns.com/"; ns-ic.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 2017060840 · primary ns-ic.ui-dns.de

Found

Primary (MNAME)
ns-ic.ui-dns.de
Contact (RNAME)
hostmaster.1und1.com
Serial
2017060840
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns-ic.ui-dns.biz (217.160.81.236)2017060840
ns-ic.ui-dns.biz (2001:8d8:fe:53::81:236)2017060840
ns-ic.ui-dns.com (185.132.34.236)2017060840
ns-ic.ui-dns.com (2607:f1c0:fe:53::34:236)2017060840
ns-ic.ui-dns.de (217.160.80.236)2017060840
ns-ic.ui-dns.de (2001:8d8:fe:53::80:236)2017060840
ns-ic.ui-dns.org (185.132.35.236)2017060840
ns-ic.ui-dns.org (2607:f1c0:fe:53::35:236)2017060840

Checks

  • ✓ Serial 2017060840 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 ns-ic.ui-dns.de is one of the listed nameservers.
  • ✓ Contact hostmaster@1und1.com #25
    The SOA RNAME hostmaster.1und1.com means hostmaster@1und1.com.
  • ✓ Date-based serial #26
    The serial 2017060840 follows the YYYYMMDDnn convention (2017-06-08).

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

warn

16 records at the apex

Found

Read from
217.160.81.236:53
TypeValueTTL
SOAns-ic.ui-dns.de. hostmaster.1und1.com. 2017060840 28800 7200 604800 60086400
NSns-ic.ui-dns.org.86400
NSns-ic.ui-dns.de.86400
NSns-ic.ui-dns.biz.86400
NSns-ic.ui-dns.com.86400
A85.184.251.15260
AAAAfe80::1:9dff:fed3:c66660
MX40 mx1.little-bird.de.60
MX50 mail2.little-bird.de.60
MX0 littlebird-de01e.mail.protection.outlook.com.60
MX30 mx0.mail.little-bird.de.60
TXT"v=spf1 a mx ip4:31.25.159.179 ip4:46.16.79.177 include:mail.ktk.de include:spf.protection.outlook.com include:spf.smtp.net -all"60
TXT"google-site-verification=sIkiLPnfXlGtbQ_mDEsS_G5xie8SXLNOz-KO3UdOqzo"60
TXT"google-site-verification=qy0tunr9W1HAgpcEN4Ga7rrV0VofjerFZJ42psjd6RU"60
TXT"n0h3442lktsbjv14oq5bc6o8q2"60
TXT"zone-ownership-verification-31ca8b99cef6ae876a8052825195356cf937c9ee2be803055bfc3648ee6fb9c9"60

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), AAAA (1m), MX (1m). Low TTLs are useful just before a planned change.
    #32
  • ✓ 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