boerse-stuttgart.de

Checked 21 October 2026, 21:50 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

adam.ns.cloudflare.com, robin.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
adam.ns.cloudflare.com, robin.ns.cloudflare.com
NS in the zone
adam.ns.cloudflare.com, robin.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
adam.ns.cloudflare.com173.245.59.54 108.162.193.54 172.64.33.54 2606:4700:58::adf5:3b36 2803:f800:50::6ca2:c136 2a06:98c1:50::ac40:2136AS13335 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-
robin.ns.cloudflare.com172.64.32.218 108.162.192.218 173.245.58.218 2606:4700:50::adf5:3ada 2803:f800:50::6ca2:c0da 2a06:98c1:50::ac40:20daAS13335 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: adam.ns.cloudflare.com, robin.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
adam.ns.cloudflare.com 173.245.59.54NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 108.162.193.54NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 172.64.33.54NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 2606:4700:58::adf5:3b36NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 2803:f800:50::6ca2:c136NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 2a06:98c1:50::ac40:2136NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 172.64.32.218NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 108.162.192.218NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 173.245.58.218NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 2606:4700:50::adf5:3adaNOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 2803:f800:50::6ca2:c0daNOERROR, 22 ms, authoritativenoyes / yesrefused2026.10.2
robin.ns.cloudflare.com 2a06:98c1:50::ac40:20daNOERROR, 19 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: adam.ns.cloudflare.com: "2026.10.2"; robin.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 2418058968 · primary adam.ns.cloudflare.com

Found

Primary (MNAME)
adam.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418058968
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
adam.ns.cloudflare.com (173.245.59.54)2418058968
adam.ns.cloudflare.com (108.162.193.54)2418058968
adam.ns.cloudflare.com (172.64.33.54)2418058968
adam.ns.cloudflare.com (2606:4700:58::adf5:3b36)2418058968
adam.ns.cloudflare.com (2803:f800:50::6ca2:c136)2418058968
adam.ns.cloudflare.com (2a06:98c1:50::ac40:2136)2418058968
robin.ns.cloudflare.com (172.64.32.218)2418058968
robin.ns.cloudflare.com (108.162.192.218)2418058968
robin.ns.cloudflare.com (173.245.58.218)2418058968
robin.ns.cloudflare.com (2606:4700:50::adf5:3ada)2418058968
robin.ns.cloudflare.com (2803:f800:50::6ca2:c0da)2418058968
robin.ns.cloudflare.com (2a06:98c1:50::ac40:20da)2418058968

Checks

  • ✓ Serial 2418058968 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 adam.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 2418058968 is a Unix timestamp (2046-08-16 19:02 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

26 records at the apex

Found

Read from
173.245.59.54:53
TypeValueTTL
SOAadam.ns.cloudflare.com. dns.cloudflare.com. 2418058968 10000 2400 604800 18001800
NSadam.ns.cloudflare.com.86400
NSrobin.ns.cloudflare.com.86400
A104.18.32.150300
A172.64.155.106300
AAAA2a06:98c1:310b::6812:2096300
AAAA2606:4700:4409::ac40:9b6a300
MX1 boersestuttgart-de01e.mail.protection.outlook.com.300
TXT"MS=20D49CB869E4B9D60E75D004A0AD81A4B199C7C0"300
TXT"adobe-sign-verification=b6f98aaaa9e7ff33ee609b3d2a63594f"300
TXT"apple-domain-verification=gTl4oVYjGf01Pj4F"300
TXT"atlassian-domain-verification=pP4R5JLznxP5DNT9hVhBG9STcwVwk9svyVRAr/HPqLekTnNSZiqVhEtqdg4ZYq1g"300
TXT"ciscocidomainverification=21145a925e564d17915a3663cc6b7a4bd55e3790673670677d484b4893c0e222"300
TXT"cloudflare_dashboard_sso=356182e84fbca9687eb49c2959978595"300
TXT"cloudflare_dashboard_sso=4c978dfed0f84777ef3dd2376b87fc42"300
TXT"cloudflare_dashboard_sso=555cbcaca0dfeb431ac56830b2c1c84e"300
TXT"cloudflare_dashboard_sso=6ed625daf2515d35b09fd77535fb3ad7"300
TXT"cloudflare_dashboard_sso=ad9599ac204ebfbe6bf8b891110cd709"300
TXT"cloudflare_dashboard_sso=cce159c26c8fe4dc6ca8f149f4e228ad"300
TXT"docker-verification=e3c9e181-bd7e-4334-bb4b-0efa69f955f6"300
TXT"figma-domain-verification=5567aa3f281a35ebb2c7c7ce794b0d00633ea9844ec760e0d7aab3555483f430-1771582811"300
TXT"google-site-verification=CPYdxVuHtjESS40hoGHDPT3HQqrGmsYbo12fLLW3I-Y"300
TXT"swisssign-check=-2kWjwlsA8lMyi3Xj4H_uyLwD0I"300
TXT"swisssign-check=7ZdaoA7c1u_H3PjovleD3vjhLrQ"300
TXT"swisssign-check=Kvrtw8W73WbVeaK74_llN1leYbg"300
TXT"v=spf1 mx include:spf.protection.outlook.com ip4:62.55.182.68 -all"300

Checks

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