wiwo.de

Checked 22 October 2026, 01:01 UTC · via 8.8.8.8
!Passed with warnings
21 passed 2 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

aida.ns.cloudflare.com, walt.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
aida.ns.cloudflare.com, walt.ns.cloudflare.com
NS in the zone
aida.ns.cloudflare.com, walt.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
aida.ns.cloudflare.com173.245.58.58 172.64.32.58 108.162.192.58 2606:4700:50::adf5:3a3a 2a06:98c1:50::ac40:203a 2803:f800:50::6ca2:c03aAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
walt.ns.cloudflare.com172.64.33.148 108.162.193.148 173.245.59.148 2a06:98c1:50::ac40:2194 2803:f800:50::6ca2:c194 2606:4700:58::adf5:3b94AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: aida.ns.cloudflare.com, walt.ns.cloudflare.com.
    #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 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 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 .com
    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
aida.ns.cloudflare.com 173.245.58.58NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
aida.ns.cloudflare.com 172.64.32.58NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
aida.ns.cloudflare.com 108.162.192.58NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
aida.ns.cloudflare.com 2606:4700:50::adf5:3a3aNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
aida.ns.cloudflare.com 2a06:98c1:50::ac40:203aNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
aida.ns.cloudflare.com 2803:f800:50::6ca2:c03aNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
walt.ns.cloudflare.com 172.64.33.148NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
walt.ns.cloudflare.com 108.162.193.148NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
walt.ns.cloudflare.com 173.245.59.148NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
walt.ns.cloudflare.com 2a06:98c1:50::ac40:2194NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
walt.ns.cloudflare.com 2803:f800:50::6ca2:c194NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
walt.ns.cloudflare.com 2606:4700:58::adf5:3b94NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2

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: aida.ns.cloudflare.com: "2026.10.2"; walt.ns.cloudflare.com: "2026.10.2". 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

pass

serial 2417896619 · primary aida.ns.cloudflare.com

Found

Primary (MNAME)
aida.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417896619
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
aida.ns.cloudflare.com (173.245.58.58)2417896619
aida.ns.cloudflare.com (172.64.32.58)2417896619
aida.ns.cloudflare.com (108.162.192.58)2417896619
aida.ns.cloudflare.com (2606:4700:50::adf5:3a3a)2417896619
aida.ns.cloudflare.com (2a06:98c1:50::ac40:203a)2417896619
aida.ns.cloudflare.com (2803:f800:50::6ca2:c03a)2417896619
walt.ns.cloudflare.com (172.64.33.148)2417896619
walt.ns.cloudflare.com (108.162.193.148)2417896619
walt.ns.cloudflare.com (173.245.59.148)2417896619
walt.ns.cloudflare.com (2a06:98c1:50::ac40:2194)2417896619
walt.ns.cloudflare.com (2803:f800:50::6ca2:c194)2417896619
walt.ns.cloudflare.com (2606:4700:58::adf5:3b94)2417896619

Checks

  • ✓ Serial 2417896619 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver aida.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417896619 is a Unix timestamp (2046-08-14 21:56 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

12 records at the apex

Found

Read from
173.245.58.58:53
TypeValueTTL
SOAaida.ns.cloudflare.com. dns.cloudflare.com. 2417896619 10000 2400 604800 18001800
NSaida.ns.cloudflare.com.86400
NSwalt.ns.cloudflare.com.86400
A104.17.170.54300
A104.17.169.54300
MX100 wiwo-de.mail.protection.outlook.com.3600
TXT"MS=ms62753686"120
TXT"anthropic-domain-verification-8730w6=SNGogvFsAFjyNxZlnS4dZoy0m"120
TXT"google-site-verification=mMxyefkF4zHapvca-hWSg-GtWtlYOn4UXmwk2ISLUe8"120
TXT"langdock-verify=_lgRVeUfNlZARW_VKSxj1p6kRwvr27Ni8x-WwlaiT2Y"120
TXT"ms-domain-verification=9fd1acea-9eaa-4be7-b566-400369a2300b"120
TXT"v=spf1 include:spf.servicemail24.de include:amazonses.com include:spf.protection.outlook.com include:spf-westeu.emailsignatures365.com ip4:104.19.212.130 ip4:104.19.213.130 ip4:104.19.221.14 ip4:104.19.222.14 ip4:104.42.74.121 ip4:104.47.0.0/17 ip4:116.50" ".56.0/21 ip4:13.81.10.179 ip4:13.93.227.154 ip4:134.170.140.0/24 ip4:136.243.30.33 ip4:136.243.30.34 ip4:144.76.172.237/32 ip4:146.0.126.9 ip4:148.251.125.254 ip4:157.55.234.0/24 ip4:157.56.110.0/23 ip4:157.56.112.0/24 ip4:192.151.176.0/20 ip4:193.194.144" ".165 ip4:193.254.180.31 ip4:196.216.238.0/23 ip4:207.46.100.0/24 ip4:207.46.163.0/24 ip4:207.46.51.64/26 ip4:208.87.232.0/21 ip4:212.62.78.117 ip4:213.199.154.0/24 ip4:213.199.180.128/26 ip4:216.32.180.0/23 ip4:23.101.48.181 ip4:23.101.59.148 ip4:23.103.1" "28.0/19 ip4:23.103.191.0/24 ip4:23.103.198.0/23 ip4:23.103.200.0/21 ip4:23.103.208.0/21 ip4:23.96.254.246 ip4:34.253.148.88 ip4:40.107.0.0/16 ip4:40.126.245.16 ip4:40.86.231.206 ip4:40.92.0.0/15 ip4:51.140.24.80 ip4:52.100.0.0/14 ip4:52.138.192.106 ip4:52" ".232.131.215 ip4:52.236.92.113 ip4:64.4.22.64/26 ip4:65.52.56.186 ip4:65.55.169.0/24 ip4:65.55.88.0/24 ip4:83.236.174.227 ip4:85.115.32.0/19 ip4:86.111.216.0/21 ip4:94.245.120.64/26 ip6:2001:489a:2202::/48 ip6:2606:4700::6813:dd0e/128 ip6:2606:4700::6813:" "de0e/128 ip6:2a01:111:f400::/48 -all"120

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, 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