heroal.de

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

pass

ns01.iok.net, ns02.iok.net, ns03.iok.net, ns04.iok.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns01.iok.net, ns02.iok.net, ns03.iok.net, ns04.iok.de
NS in the zone
ns01.iok.net, ns02.iok.net, ns03.iok.net, ns04.iok.de
NameserverAddressesNetwork (AS)Glue
ns01.iok.net87.106.169.48 2001:8d8:1800:235::1AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-
ns02.iok.net94.130.110.111 2a01:4f8:c0c:984e::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
ns03.iok.net87.106.236.176 2001:ba0:1800:80bd::1AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-
ns04.iok.de178.156.187.239 2a01:4ff:f0:cf5c::1AS213230 HETZNER-CLOUD2-AS - Hetzner Online GmbH, DE AS213230 HETZNER-CLOUD2-AS - Hetzner Online GmbH, DE-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns01.iok.net, ns02.iok.net, ns03.iok.net, ns04.iok.de.
  • ✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS213230 (HETZNER-CLOUD2-AS - Hetzner Online GmbH, DE): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 addresses; AS8560 (IONOS-AS - IONOS SE, DE): 4 addresses.
  • ✓ 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

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns01.iok.net 87.106.169.48NOERROR, 9 ms, authoritativenoyes / yesrefusedForbidden
ns01.iok.net 2001:8d8:1800:235::1NOERROR, 9 ms, authoritativenoyes / yesrefusedForbidden
ns02.iok.net 94.130.110.111NOERROR, 2 ms, authoritativenoyes / yesrefusedForbidden
ns02.iok.net 2a01:4f8:c0c:984e::1NOERROR, 1 ms, authoritativenoyes / yesrefusedForbidden
ns03.iok.net 87.106.236.176NOERROR, 42 ms, authoritativenoyes / yesrefusedForbidden
ns03.iok.net 2001:ba0:1800:80bd::1NOERROR, 40 ms, authoritativenoyes / yesrefusedForbidden
ns04.iok.de 178.156.187.239NOERROR, 101 ms, authoritativenoyes / yesrefusedForbidden
ns04.iok.de 2a01:4ff:f0:cf5c::1NOERROR, 97 ms, authoritativenoyes / yesrefusedForbidden

Checks

  • ✓ All respond #14
    All 8 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: ns01.iok.net: "Forbidden"; ns02.iok.net: "Forbidden"; ns03.iok.net: "Forbidden"; ns04.iok.de: "Forbidden".
    #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 2026101303 · primary ns01.iok.net

Found

Primary (MNAME)
ns01.iok.net
Contact (RNAME)
server-providing.iok.net
Serial
2026101303
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
10800 s

Serial per nameserver

NameserverSerial
ns01.iok.net (87.106.169.48)2026101303
ns01.iok.net (2001:8d8:1800:235::1)2026101303
ns02.iok.net (94.130.110.111)2026101303
ns02.iok.net (2a01:4f8:c0c:984e::1)2026101303
ns03.iok.net (87.106.236.176)2026101303
ns03.iok.net (2001:ba0:1800:80bd::1)2026101303
ns04.iok.de (178.156.187.239)2026101303
ns04.iok.de (2a01:4ff:f0:cf5c::1)2026101303

Checks

  • ✓ Serial 2026101303 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 3h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns01.iok.net is one of the listed nameservers.
  • ✓ Contact server-providing@iok.net #25
    The SOA RNAME server-providing.iok.net means server-providing@iok.net.
  • ✓ Date-based serial #26
    The serial 2026101303 follows the YYYYMMDDnn convention (2026-10-13).

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

21 records at the apex

Found

Read from
87.106.169.48:53
TypeValueTTL
SOAns01.iok.net. server-providing.iok.net. 2026101303 10800 3600 604800 10800300
NSns01.iok.net.300
NSns04.iok.de.300
NSns03.iok.net.300
NSns02.iok.net.300
A212.227.129.226300
MX40 mailgate04.heroal.de.7200
MX30 mailgate03.heroal.de.7200
TXT"openai-domain-verification=dv-9VgFbCYUt6Pb8wpIQeb5hIkD"300
TXT"qvhmlzxh87db3cn5l8bqwbnbxmg9flvk"300
TXT"logmein-verification-code=6ead11a1-7959-462b-b304-c768b52af313"300
TXT"B0ZxeBUZAi6oRlMh6U0DAY6jtWW/iXogxiw3SFTB3CX35RUDAWW3lDEe3a8j2W7LnQd2UKqFk1mzI7wJoiHJyQ=="300
TXT"mandrill_verify.deI95jPYtFALcKdOdIR9hA"300
TXT"7a47fcdb4c88c00ae54708785f5868c503ff20425424431dc4ce64abd26f054"300
TXT"apple-domain-verification=KwYcPDroG9ArPvgW"300
TXT"v=spf1 include:_services.heroal.de include:_spf.recruiting-portal.com include:amazonses.com include:spf.protection.outlook.com include:_spfrelay.iok.net include:spf.mandrillapp.com include:_eventkingdom.heroal.de -all"300
TXT"atlassian-domain-verification=MkYTzrZ/sv9BqIP5AwvoObME05IDqQlCoVtGaTtSGBDdDjgugzYI2IV8livuaJnz"300
TXT"google-site-verification=UgqJCdpy6OLEZd8DpkMr61BpG3l05JBK5QBuzUI4eJk"300
TXT"_lu9t8bvmm9bnxp3d4ymcwy7s0p5b9g4"300
TXT"bw=VnN5Zy3gPXqPuXuSVUF1GnzVzDFDsfooTSKwHL434b4z"300
TXT"MS=15425937E2203F1C2FA2A2771DC33897C1871B36"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 2h, 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.
  • 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