logos-verlag.de

Checked 21 October 2026, 23:20 UTC · via 8.8.8.8
!Passed with warnings
18 passed 5 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

ns14.linevast.com, ns15.linevast.com, ns16.linevast.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns14.linevast.com, ns15.linevast.com, ns16.linevast.com
NS in the zone
ns14.linevast.com, ns15.linevast.com, ns16.linevast.com
NameserverAddressesNetwork (AS)Glue
ns14.linevast.com83.171.239.247 2a05:8b81:1000:1::1a6e:b361AS201206 LINEVAST - Droptop GmbH, DE AS201206 LINEVAST - Droptop GmbH, DE-
ns15.linevast.com83.171.239.254 2a05:8b81:1000:1::7e03:d9afAS201206 LINEVAST - Droptop GmbH, DE AS201206 LINEVAST - Droptop GmbH, DE-
ns16.linevast.com83.171.239.39 2a05:8b81:1000:1::961:ce9cAS201206 LINEVAST - Droptop GmbH, DE AS201206 LINEVAST - Droptop GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns14.linevast.com, ns15.linevast.com, ns16.linevast.com.
  • ✓ 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 83.171.239.0/24; all IPv6 addresses are in 2a05:8b81:1000::/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 (AS201206 (LINEVAST - Droptop GmbH, DE): 6 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

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns14.linevast.com 83.171.239.247NOERROR, 0 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)
ns14.linevast.com 2a05:8b81:1000:1::1a6e:b361NOERROR, 1 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)
ns15.linevast.com 83.171.239.254NOERROR, 0 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)
ns15.linevast.com 2a05:8b81:1000:1::7e03:d9afNOERROR, 0 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)
ns16.linevast.com 83.171.239.39NOERROR, 0 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)
ns16.linevast.com 2a05:8b81:1000:1::961:ce9cNOERROR, 0 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)

Checks

  • ✓ All respond #14
    All 6 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: ns14.linevast.com: "PowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)"; ns15.linevast.com: "PowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)"; ns16.linevast.com: "PowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)". 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

warn

serial 2025073001 · primary ns14.linevast.com

Found

Primary (MNAME)
ns14.linevast.com
Contact (RNAME)
hostmaster.logos-verlag.de
Serial
2025073001
Refresh / retry
3600 s / 600 s
Expire
1209600 s
Negative TTL
200 s

Serial per nameserver

NameserverSerial
ns14.linevast.com (83.171.239.247)2025073001
ns14.linevast.com (2a05:8b81:1000:1::1a6e:b361)2025073001
ns15.linevast.com (83.171.239.254)2025073001
ns15.linevast.com (2a05:8b81:1000:1::7e03:d9af)2025073001
ns16.linevast.com (83.171.239.39)2025073001
ns16.linevast.com (2a05:8b81:1000:1::961:ce9c)2025073001

Checks

  • ✓ Serial 2025073001 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 3m20s is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1h, retry 10m, expire 14d, negative TTL 3m20s.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns14.linevast.com is one of the listed nameservers.
  • ✓ Contact hostmaster@logos-verlag.de #25
    The SOA RNAME hostmaster.logos-verlag.de means hostmaster@logos-verlag.de.
  • ✓ Date-based serial #26
    The serial 2025073001 follows the YYYYMMDDnn convention (2025-07-30).

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

9 records at the apex

Found

Read from
83.171.239.247:53
TypeValueTTL
SOAns14.linevast.com. hostmaster.logos-verlag.de. 2025073001 3600 600 1209600 200200
NSns15.linevast.com.200
NSns14.linevast.com.200
NSns16.linevast.com.200
A185.82.21.172300
AAAA2a05:8b81:1000:40::e265300
MX5 mta-gw.infomaniak.ch.300
TXT"google-site-verification=2AUSq159EgS-fzCifMp907R8Oun0TCMfZ34u4ydnfVY"300
TXT"v=spf1 a mx ip4:185.82.21.172 ip6:2a05:8b81:1000:40::e265 include:logosedit.de include:spf.infomaniak.ch -all"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: NS (3m20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 3m20s; resolvers may use either.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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