bnn.de

Checked 21 October 2026, 21:50 UTC · via 8.8.8.8
!Passed with warnings
22 passed 1 warning 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

ns1.nodesecure.com, ns2.nodesecure.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.nodesecure.com, ns2.nodesecure.de
NS in the zone
ns1.nodesecure.com, ns2.nodesecure.de
NameserverAddressesNetwork (AS)Glue
ns1.nodesecure.com192.174.68.102 2001:67c:1bc::102AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns2.nodesecure.de176.97.158.102 2001:67c:10b8::102AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.nodesecure.com, ns2.nodesecure.de.
    #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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .de.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.nodesecure.com 192.174.68.102NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns1.nodesecure.com 2001:67c:1bc::102NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns2.nodesecure.de 176.97.158.102NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
ns2.nodesecure.de 2001:67c:10b8::102NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1

Checks

  • ✓ All respond #14
    All 4 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: ns1.nodesecure.com: "RcodeZero DNS"; ns2.nodesecure.de: "reg-wie1".
    #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 2026100700 · primary ns1.nodesecure.com

Found

Primary (MNAME)
ns1.nodesecure.com
Contact (RNAME)
hostmaster.leitwerk.de
Serial
2026100700
Refresh / retry
10000 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.nodesecure.com (192.174.68.102)2026100700
ns1.nodesecure.com (2001:67c:1bc::102)2026100700
ns2.nodesecure.de (176.97.158.102)2026100700
ns2.nodesecure.de (2001:67c:10b8::102)2026100700

Checks

  • ✓ Serial 2026100700 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 1h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.nodesecure.com is one of the listed nameservers.
  • ✓ Contact hostmaster@leitwerk.de #25
    The SOA RNAME hostmaster.leitwerk.de means hostmaster@leitwerk.de.
  • ✓ Date-based serial #26
    The serial 2026100700 follows the YYYYMMDDnn convention (2026-10-07).

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

31 records at the apex

Found

Read from
192.174.68.102:53
TypeValueTTL
SOAns1.nodesecure.com. hostmaster.leitwerk.de. 2026100700 10000 3600 604800 36003600
NSns1.nodesecure.com.3600
NSns2.nodesecure.de.3600
A108.138.26.623600
A108.138.26.663600
A108.138.26.963600
A108.138.26.1123600
AAAA2600:9000:2491:1c00:17:83c8:f080:93a13600
AAAA2600:9000:2491:1e00:17:83c8:f080:93a13600
AAAA2600:9000:2491:5600:17:83c8:f080:93a13600
AAAA2600:9000:2491:5a00:17:83c8:f080:93a13600
AAAA2600:9000:2491:7400:17:83c8:f080:93a13600
AAAA2600:9000:2491:b000:17:83c8:f080:93a13600
AAAA2600:9000:2491:be00:17:83c8:f080:93a13600
AAAA2600:9000:2491:c000:17:83c8:f080:93a13600
MX10 bnn-de.mail.protection.outlook.com.3600
TXT"ZOOM_verify_UoYx6X7vQiuAIpfnB8OrFg"3600
TXT"asv=01c32ab9d8b5ca5c4c2b5d720dd57ad8"3600
TXT"apple-domain-verification=AKS2qir0N1T6b1Tc"3600
TXT"MS=DF2ADD22635A85005AB14B36026AB7EDF43427C2"3600
TXT"miro-verification=125c3970cfa78a5caed01e606dda8b7c4de3cc4c"3600
TXT"linkedin-site-verification=9864e9fa-b3f7-42ea-8b70-5e81b2a6ce8e"3600
TXT"maxcluster-domain-verification=1ubrnawqaxjxr37c16esinp6dascvlov"3600
TXT"slack-domain-verification=DwKeRIppYu9WgQJKsdfBiuOZlZs67fIVO1XWquOp"3600
TXT"sophos-domain-verification=dca2fa4613dae99d9b1bd0c2a5d763e00b51096c"3600
TXT"google-site-verification=VUfVFjnTAWcm3hI_bdKzX0_NHY5MOykfMk3frmFQqGw"3600
TXT"google-site-verification=rWQhd1OrAXQDgvnIvdddF6WQAZCyH8LLD-6JyJ-hTZ0"3600
TXT"stripe-verification=bcc73fbff9c4dd76102e9e3eac222d4024886e29530ea9b73ab4d18a32d54b70"3600
TXT"duo_sso_verification=F4BLT0hR60VnVUcEa9PsFX9BecV5aDaU0VECbOzEg63onZ2NCrZKyntGhj52ETgM"3600
TXT"sophos-domain-verification=ba36af430bb5b0b700de3441ffba5a40bbdf91d9b6717a0603440963034b9bfe"3600
TXT"v=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com mx ip4:193.202.119.68 ip4:193.202.119.69 ip4:193.202.119.70 -all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
  • ✓ 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