medigle.de

Checked 21 October 2026, 23:21 UTC · via 8.8.8.8
!Passed with warnings
25 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

pass

ns1.svethostingu.cz, ns2.svethostingu.cz, ns3.svethostingu.eu

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.svethostingu.cz, ns2.svethostingu.cz, ns3.svethostingu.eu
NS in the zone
ns1.svethostingu.cz, ns2.svethostingu.cz, ns3.svethostingu.eu
NameserverAddressesNetwork (AS)Glue
ns1.svethostingu.cz83.167.244.171 2a01:430:53::8300:171AS24971 MASTER-AS - MasterDC s.r.o., CZ AS24971 MASTER-AS - MasterDC s.r.o., CZ-
ns2.svethostingu.cz212.158.159.98 2a02:a40:20c::98AS25248 BlueTone-AS - RADIOKOMUNIKACE a.s., CZ AS25248 BlueTone-AS - RADIOKOMUNIKACE a.s., CZ-
ns3.svethostingu.eu165.22.74.103 2a03:b0c0:3:e0::14d:d001AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US AS14061 DIGITALOCEAN-ASN - DigitalOcean, LLC, US-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.svethostingu.cz, ns2.svethostingu.cz, ns3.svethostingu.eu.
  • ✓ 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 3 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS14061 (DIGITALOCEAN-ASN - DigitalOcean, LLC, US): 2 addresses; AS24971 (MASTER-AS - MasterDC s.r.o., CZ): 2 addresses; AS25248 (BlueTone-AS - RADIOKOMUNIKACE a.s., CZ): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .cz, .eu.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.svethostingu.cz 83.167.244.171NOERROR, 16 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.4.1
ns1.svethostingu.cz 2a01:430:53::8300:171NOERROR, 16 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.4.1
ns2.svethostingu.cz 212.158.159.98NOERROR, 14 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.4.1
ns2.svethostingu.cz 2a02:a40:20c::98NOERROR, 14 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.4.1
ns3.svethostingu.eu 165.22.74.103NOERROR, 5 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.4.1
ns3.svethostingu.eu 2a03:b0c0:3:e0::14d:d001NOERROR, 5 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.4.1

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: ns1.svethostingu.cz: "PowerDNS Authoritative Server 4.4.1"; ns2.svethostingu.cz: "PowerDNS Authoritative Server 4.4.1"; ns3.svethostingu.eu: "PowerDNS Authoritative Server 4.4.1". 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 2026083102 · primary ns1.svethostingu.cz

Found

Primary (MNAME)
ns1.svethostingu.cz
Contact (RNAME)
dnsmaster.svethostingu.cz
Serial
2026083102
Refresh / retry
14400 s / 3600 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.svethostingu.cz (83.167.244.171)2026083102
ns1.svethostingu.cz (2a01:430:53::8300:171)2026083102
ns2.svethostingu.cz (212.158.159.98)2026083102
ns2.svethostingu.cz (2a02:a40:20c::98)2026083102
ns3.svethostingu.eu (165.22.74.103)2026083102
ns3.svethostingu.eu (2a03:b0c0:3:e0::14d:d001)2026083102

Checks

  • ✓ Serial 2026083102 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 14d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.svethostingu.cz is one of the listed nameservers.
  • ✓ Contact dnsmaster@svethostingu.cz #25
    The SOA RNAME dnsmaster.svethostingu.cz means dnsmaster@svethostingu.cz.
  • ✓ Date-based serial #26
    The serial 2026083102 follows the YYYYMMDDnn convention (2026-08-31).

DNSSEC

warn

Signed, but no DS at parent

Found

Validated by resolver
no
Denial of existence
NSEC
Signatures valid until
29 October 2026

DNSKEY in the zone

Key tagRoleAlgorithm
63643ZSK (256)RSASHA256 (8)
58024KSK (257)RSASHA256 (8)

Checks

  • !
    Signed but not delegated securely
    The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.
    #27
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Signatures valid until 2026-10-29 #30
    The earliest DNSKEY/SOA signature expires at 2026-10-29 00:00 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

info

9 records at the apex

Found

Read from
83.167.244.171:53
TypeValueTTL
SOAns1.svethostingu.cz. dnsmaster.svethostingu.cz. 2026083102 14400 3600 1209600 3003600
NSns1.svethostingu.cz.3600
NSns3.svethostingu.eu.3600
NSns2.svethostingu.cz.3600
A83.167.244.2013600
A83.167.244.2023600
AAAA2a01:430:53::8300:2013600
AAAA2a01:430:53::8300:2023600
MX10 mail.svethostingu.cz.3600

Checks

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