otto.de

Checked 21 October 2026, 23:42 UTC · via 8.8.8.8
!Passed with warnings
20 passed 3 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

a1-208.akam.net, a24-65.akam.net, a28-66.akam.net, a5-66.akam.net, a8-65.akam.net, a9-64.akam.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a1-208.akam.net, a24-65.akam.net, a28-66.akam.net, a5-66.akam.net, a8-65.akam.net, a9-64.akam.net
NS in the zone
a1-208.akam.net, a24-65.akam.net, a28-66.akam.net, a5-66.akam.net, a8-65.akam.net, a9-64.akam.net
NameserverAddressesNetwork (AS)Glue
a1-208.akam.net193.108.91.208 2600:1401:2::d0AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a24-65.akam.net2.16.130.65 2600:1480:9800::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a28-66.akam.net95.100.173.66 2600:1480:d800::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a5-66.akam.net95.100.168.66 2600:1480:b000::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-65.akam.net2.16.40.65 2600:1403:a::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-64.akam.net184.85.248.64 2a02:26f0:117::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-208.akam.net, a24-65.akam.net, a28-66.akam.net, a5-66.akam.net, a8-65.akam.net, a9-64.akam.net.
  • ✓ 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 6 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 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 .net
    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

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-208.akam.net 193.108.91.208NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a1-208.akam.net 2600:1401:2::d0NOERROR, 4 ms, authoritativenoyes / yesrefused41824.11
a24-65.akam.net 2.16.130.65NOERROR, 5 ms, authoritativenoyes / yesrefused48878.27
a24-65.akam.net 2600:1480:9800::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
a28-66.akam.net 95.100.173.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a28-66.akam.net 2600:1480:d800::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a5-66.akam.net 95.100.168.66NOERROR, 5 ms, authoritativenoyes / yesrefused41824.4
a5-66.akam.net 2600:1480:b000::42NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a8-65.akam.net 2.16.40.65NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a8-65.akam.net 2600:1403:a::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a9-64.akam.net 184.85.248.64NOERROR, 5 ms, authoritativenoyes / yesrefused41824.9
a9-64.akam.net 2a02:26f0:117::40NOERROR, 5 ms, authoritativenoyes / yesrefused41824.10

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: a1-208.akam.net: "41824.9"; a1-208.akam.net: "41824.11"; a24-65.akam.net: "48878.27"; a28-66.akam.net: "48878.32"; a28-66.akam.net: "48878.29"; a5-66.akam.net: "41824.4"; a5-66.akam.net: "41824.8"; a8-65.akam.net: "48878.32"; a9-64.akam.net: "41824.9"; a9-64.akam.net: "41824.10". 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

info

serial 2014082823 · primary pns.otto.de

Found

Primary (MNAME)
pns.otto.de
Contact (RNAME)
hostmaster.otto.de
Serial
2014082823
Refresh / retry
3600 s / 900 s
Expire
604800 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
a1-208.akam.net (193.108.91.208)2014082823
a1-208.akam.net (2600:1401:2::d0)2014082823
a24-65.akam.net (2.16.130.65)2014082823
a24-65.akam.net (2600:1480:9800::41)2014082823
a28-66.akam.net (95.100.173.66)2014082823
a28-66.akam.net (2600:1480:d800::42)2014082823
a5-66.akam.net (95.100.168.66)2014082823
a5-66.akam.net (2600:1480:b000::42)2014082823
a8-65.akam.net (2.16.40.65)2014082823
a8-65.akam.net (2600:1403:a::41)2014082823
a9-64.akam.net (184.85.248.64)2014082823
a9-64.akam.net (2a02:26f0:117::40)2014082823

Checks

  • ✓ Serial 2014082823 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 15m, expire 7d, negative TTL 15m.
  • i
    Hidden master
    The primary nameserver pns.otto.de is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact hostmaster@otto.de #25
    The SOA RNAME hostmaster.otto.de means hostmaster@otto.de.
  • ✓ Date-based serial #26
    The serial 2014082823 follows the YYYYMMDDnn convention (2014-08-28).

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

36 records at the apex

Found

Read from
193.108.91.208:53
TypeValueTTL
SOApns.otto.de. hostmaster.otto.de. 2014082823 3600 900 604800 9003600
NSa5-66.akam.net.3600
NSa1-208.akam.net.3600
NSa28-66.akam.net.3600
NSa9-64.akam.net.3600
NSa24-65.akam.net.3600
NSa8-65.akam.net.3600
A35.157.102.9160
A35.156.205.22560
A3.70.148.16260
A18.158.146.18260
A63.189.123.18160
A52.28.49.6360
A18.184.217.16960
A3.120.102.25460
MX50 otto-de.mail.protection.outlook.com.3600
TXT"dtm-domain-verification=mM876KNtSp0KQQYotikNG6TPTIoaSmKM_7lgUENJM_o"3600
TXT"google-site-verification=mwRR8O8tb2xn2nbAuVoFRXq3FvQG8TBXVfvao9Ws6dY"3600
TXT"google-site-verification=uhp66_5IP66csx6AefbIEaCUbgfvZ6gffnAwJj3IX5c"3600
TXT"docker-verification=dd370709-def2-48e6-bfe6-ceafcf66e031"3600
TXT"wiz-domain-verification=084961cf6a9943467022b6e4e254206d89ccca15ebf3b26fbcda38cfa76fdb97"3600
TXT"00D9b00000SfmQL=1TB9b00000008wr;00D2o000000kAmU=1TBTr00000004Jl"3600
TXT"amazonses:mIH7OVHQO2F5WChOVyD79u9apTHT6sbf7e2VZ9NtvsA="3600
TXT"v=spf1 ip4:80.85.192.0/20 include:spf.hornetsecurity.com include:spf.protection.outlook.com include:_spf.salesforce.com a:_spf.otto.de -all"3600
TXT"MS=ms67614880"3600
TXT"facebook-domain-verification=j70v29fpjg4ojg80gbifqw1eego33r"3600
TXT"w/u0tIPwCWqtaT33cfLaDRI4cUHazVnFGfjZSvZs5J409OjBQgoS6SifMXSef28udDpQymTVQsX2gktjmDFz0w=="3600
TXT"apple-domain-verification=siseb2WuYlAhQ1Js"3600
TXT"miro-verification=bdc9cd9f80167223093040082fce9f70cb15a22c"3600
TXT"CTxuSaM2ovKYyOHyjzvyQ0f9brbx1ug7SugtgTUplebg9BFi1Vtkj5o/qoiuVxKuAUUWEaoNuR4awzrsYh6LiA=="3600
TXT"QCbesHKcvkL0B5iRm1w3tj7P1PyQAorD"3600
TXT"wiz-domain-verification=9e685f8b43ce318887c925c4c1973c62ec374a09e49fb1c22bfb049a03ddf05e"3600
TXT"figma-domain-verification=a7779162ff855ae8f5aca8708caa598f1d994bcd54c597f3816230fcc8817fe0-1744186662"3600
TXT"adobe-idp-site-verification=86e3d89586a3c84e183be6ac5f4ecb05d1011a5b6df236931e040666450a8c7f"3600
TXT"atlassian-domain-verification=XuvfFNPt8O1LGWHgmu6drxqQRbfQGX4Dr2Ot8f9rgaA2FemHHZpmo2KZHiug8I9G"3600
TXT"mongodb-site-verification=XP5hVwaaialm2di9r4ME8FEBAgoydmWc"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
    #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