lebenshilfe.de

Checked 21 October 2026, 23:11 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

warn

lh.scgateway.de, sec-dns01.nbgo.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
lh.scgateway.de, sec-dns01.nbgo.de
NS in the zone
lh.scgateway.de, sec-dns01.nbgo.de
NameserverAddressesNetwork (AS)Glue
lh.scgateway.de185.146.238.86 2a02:420:0:8::1900AS38927 NETBUILD-AS - Net-Build GmbH, DE AS38927 NETBUILD-AS - Net-Build GmbH, DE-
sec-dns01.nbgo.de185.146.238.254 2a02:420:0:10::2AS38927 NETBUILD-AS - Net-Build GmbH, DE AS38927 NETBUILD-AS - Net-Build GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: lh.scgateway.de, sec-dns01.nbgo.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 one network
    all IPv4 addresses are in 185.146.238.0/24; all IPv6 addresses are in 2a02:420::/48. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS38927 (NETBUILD-AS - Net-Build GmbH, DE): 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
  • i
    All nameserver names under .de
    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

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
lh.scgateway.de 185.146.238.86NOERROR, 11 ms, authoritativenoyes / yesrefusednone
lh.scgateway.de 2a02:420:0:8::1900NOERROR, 12 ms, authoritativenoyes / yesrefusednone
sec-dns01.nbgo.de 185.146.238.254NOERROR, 12 ms, authoritativenoyes / yesrefused9.16.23-RH
sec-dns01.nbgo.de 2a02:420:0:10::2NOERROR, 9 ms, authoritativenoyes / yesrefused9.16.23-RH

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: sec-dns01.nbgo.de: "9.16.23-RH". 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 2026051814 · primary sec-dns01.nbgo.de

Found

Primary (MNAME)
sec-dns01.nbgo.de
Contact (RNAME)
it.lebenshilfe.de
Serial
2026051814
Refresh / retry
10800 s / 3600 s
Expire
1209600 s
Negative TTL
10800 s

Serial per nameserver

NameserverSerial
lh.scgateway.de (185.146.238.86)2026051814
lh.scgateway.de (2a02:420:0:8::1900)2026051814
sec-dns01.nbgo.de (185.146.238.254)2026051814
sec-dns01.nbgo.de (2a02:420:0:10::2)2026051814

Checks

  • ✓ Serial 2026051814 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 14d, negative TTL 3h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver sec-dns01.nbgo.de is one of the listed nameservers.
  • ✓ Contact it@lebenshilfe.de #25
    The SOA RNAME it.lebenshilfe.de means it@lebenshilfe.de.
  • ✓ Date-based serial #26
    The serial 2026051814 follows the YYYYMMDDnn convention (2026-05-18).

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

9 records at the apex

Found

Read from
185.146.238.86:53
TypeValueTTL
SOAsec-dns01.nbgo.de. it.lebenshilfe.de. 2026051814 10800 3600 1209600 1080086400
NSsec-dns01.nbgo.de.86400
NSlh.scgateway.de.86400
A185.146.238.8686400
AAAA2a02:420:0:8::190086400
MX0 lebenshilfe-de.mail.protection.outlook.com.3600
TXT"MS=ms26382554"3600
TXT"v=spf1 mx a include:spf.protection.outlook.com include:spf.crsend.com include:spfa.myconvento.com ip4:212.68.67.217 ip4:51.89.73.208 ip4:147.135.249.48 ip4:54.37.79.226 ~all"3600
TXT"v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArMkNkbjTVGUc/hN19p9voiFEQn81Kr8MLI4VFCovRVgkSq9QPn3bu7+hboy2BD0iLgklujbOIQo1iFAMwa3I/8gdqasReuTJqZNvPuCsrvukSYqrbxE6y+s60/ATDgNH+n/YiwhbqNPFJXURn8JoVKfDYSlcRmG/9SCtpVcMhaMwH1pbRncGsc85VcqUtj/gH" "dl8M0I29R03ANNqycrOj8DP5sA+yxluqKOUZ2YcNMtatcJyeZICNcAn7hMguvSRQx0S4y2ixcr5bew33GW1KAY6/832+XW78O/rHd94y/JIGDMR+S1/1gvjnWg93A1TBGAiEOgO8vyS0uHPyCp3xwIDAQAB"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, AAAA 1d, 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