1822direkt.de

Checked 21 October 2026, 21:27 UTC · via 8.8.8.8
!Passed with warnings
21 passed 1 warning 0 failed 7 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

a.ns.plusline.net, b.ns.plusline.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a.ns.plusline.net, b.ns.plusline.de
NS in the zone
a.ns.plusline.net, b.ns.plusline.de
NameserverAddressesNetwork (AS)Glue
a.ns.plusline.net212.19.48.53 2a02:2e0:2810:204:d::53AS12306 PLUSLINE - Plus.line AG, DE AS12306 PLUSLINE - Plus.line AG, DE-
b.ns.plusline.de212.19.40.53 2a02:2e0:2810:205:d::53AS12306 PLUSLINE - Plus.line AG, DE AS12306 PLUSLINE - Plus.line AG, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: a.ns.plusline.net, b.ns.plusline.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2a02:2e0:2810::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12306 (PLUSLINE - Plus.line AG, 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
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a.ns.plusline.net 212.19.48.53NOERROR, 4 ms, authoritativenoyes / yesrefused-
a.ns.plusline.net 2a02:2e0:2810:204:d::53NOERROR, 4 ms, authoritativenoyes / yesrefused-
b.ns.plusline.de 212.19.40.53NOERROR, 4 ms, authoritativenoyes / yesrefused-
b.ns.plusline.de 2a02:2e0:2810:205:d::53NOERROR, 4 ms, authoritativenoyes / yesrefused-

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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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

info

serial 2026091002 · primary ns.plusline.de

Found

Primary (MNAME)
ns.plusline.de
Contact (RNAME)
hostmaster.plusline.de
Serial
2026091002
Refresh / retry
10800 s / 60 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
a.ns.plusline.net (212.19.48.53)2026091002
a.ns.plusline.net (2a02:2e0:2810:204:d::53)2026091002
b.ns.plusline.de (212.19.40.53)2026091002
b.ns.plusline.de (2a02:2e0:2810:205:d::53)2026091002

Checks

  • ✓ Serial 2026091002 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1m, expire 7d, negative TTL 1d.
  • i
    Hidden master
    The primary nameserver ns.plusline.de is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact hostmaster@plusline.de #25
    The SOA RNAME hostmaster.plusline.de means hostmaster@plusline.de.
  • ✓ Date-based serial #26
    The serial 2026091002 follows the YYYYMMDDnn convention (2026-09-10).

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
212.19.48.53:53
TypeValueTTL
SOAns.plusline.de. hostmaster.plusline.de. 2026091002 10800 60 604800 86400300
NSa.ns.plusline.net.300
NSb.ns.plusline.de.300
A185.85.0.224300
AAAA2a02:cb40:200::bd300
MX10 y01es.mail.s-web.de.300
MX10 y02es.mail.s-web.de.300
TXT"v=spf1 include:spf.mail.s-web.de ip4:109.234.127.0/24 ip4:80.82.206.0/26 ip4:185.98.184.0/24 -all"300
TXT"_shriljkf2tg2k1mtabl23obfufdozgj"300
TXT"apple-domain-verification=BrPznjoDyqqjNSKf"300
TXT"QuoVadis=_47qcwqnxm1sppekjhsloimwgzm37u03"300
TXT"3tc3nsx74k8zypd2v0pfxgnbf5v344dr"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, NS 5m. The NS TTL at the parent is 1d and in the zone 5m; 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