joka.de

Checked 21 October 2026, 23:01 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 warnings 0 failed 5 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

ns1.bios-online.de, ns2.bios-online.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.bios-online.de, ns2.bios-online.de
NS in the zone
ns1.bios-online.de, ns2.bios-online.de
NameserverAddressesNetwork (AS)Glue
ns1.bios-online.de217.31.82.10AS29140 HOSTSERVER-AS - Hostserver GmbH, DE-
ns2.bios-online.de62.116.145.206AS15456 INTERNETX-AS - InterNetX GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.bios-online.de, ns2.bios-online.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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS15456 (INTERNETX-AS - InterNetX GmbH, DE): 1 address; AS29140 (HOSTSERVER-AS - Hostserver GmbH, DE): 1 address.
  • 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.bios-online.de 217.31.82.10NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2.bios-online.de 62.116.145.206NOERROR, 10 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 2 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

pass

serial 2026092207 · primary ns1.bios-online.de

Found

Primary (MNAME)
ns1.bios-online.de
Contact (RNAME)
hostmaster.adns2.de
Serial
2026092207
Refresh / retry
39940 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.bios-online.de (217.31.82.10)2026092207
ns2.bios-online.de (62.116.145.206)2026092207

Checks

  • ✓ Serial 2026092207 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 11h5m40s, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.bios-online.de is one of the listed nameservers.
  • ✓ Contact hostmaster@adns2.de #25
    The SOA RNAME hostmaster.adns2.de means hostmaster@adns2.de.
  • ✓ Date-based serial #26
    The serial 2026092207 follows the YYYYMMDDnn convention (2026-09-22).

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

16 records at the apex

Found

Read from
217.31.82.10:53
TypeValueTTL
SOAns1.bios-online.de. hostmaster.adns2.de. 2026092207 39940 7200 604800 8640086400
NSns1.bios-online.de.86400
NSns2.bios-online.de.86400
A52.29.127.0600
MX10 mx-01-eu-central-1.prod.hydra.sophos.com.3600
MX20 mx-02-eu-central-1.prod.hydra.sophos.com.3600
TXT"apple-domain-verification=TiHelJP8NlgdRLxy"3600
TXT"v=spf1 a ip4:80.150.31.11 include:_spf_eucentral1.prod.hydra.sophos.com include:spf.protection.outlook.com include:_spf.salesforce.com include:spf.de.umantis.com include:spf.topdesk.net include:amazonses.com -all"3600
TXT"atlassian-domain-verification=kbvaLvdEg9m6BaLN6CMcC6VG4xq4IehNdzkvXADyihufpaOBE06VKDqnQh3IZHek"86400
TXT"duo_sso_verification=7iYUOSBYgHsdhyaLwIUJVfXAzqukwgsKUwNocXyu91qWwBrpZDaBdPUSD84arrhU"3600
TXT"sophos-domain-verification=5a35effb02f9b2b04def2f12583e6df6e15956d7f307899a3a18f4659970e346"3600
TXT"google-site-verification=v57qMJILToNrtZ5pcymTFzqM7iwTcqwKjppbdW1DOOI"3600
TXT"ms-domain-verification=7373b0f1-3f02-4456-9019-485061491d4e"3600
TXT"sophos-domain-verification=a2f3ea2cba9cd8127b174784165e82619922d53f"3600
TXT"MS=ms74045224"3600
TXT"google-site-verification=Rh6Q8LomTQRkmhzFonU38KVZyX-hsq-xxEWCgXYHjr4"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, 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