pcspezialist.de

Checked 21 October 2026, 23:42 UTC · via 8.8.8.8
!Passed with warnings
25 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

dns1.cloudns.net, dns2.cloudns.net, dns5.cloudns.net, dns6.cloudns.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns1.cloudns.net, dns2.cloudns.net, dns5.cloudns.net, dns6.cloudns.net
NS in the zone
dns1.cloudns.net, dns2.cloudns.net, dns5.cloudns.net, dns6.cloudns.net
NameserverAddressesNetwork (AS)Glue
dns1.cloudns.net185.136.96.77 2a06:fb00:1::1:77AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
dns2.cloudns.net185.136.97.77 2a06:fb00:1::2:77AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
dns5.cloudns.net185.136.98.77 2a06:fb00:1::3:77AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
dns6.cloudns.net185.136.99.77 2a06:fb00:1::4:77AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-

Checks

  • ✓ 4 nameservers #6
    Delegated to dns1.cloudns.net, dns2.cloudns.net, dns5.cloudns.net, dns6.cloudns.net.
  • ✓ 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 2a06:fb00:1::/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 (AS203391 (CLOUDNSNET - Cloud DNS Ltd, BG): 8 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 .net
    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

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.cloudns.net 185.136.96.77NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-2
dns1.cloudns.net 2a06:fb00:1::1:77NOERROR, 5 ms, authoritativenoyes / yesrefusedde3-2
dns2.cloudns.net 185.136.97.77NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-2
dns2.cloudns.net 2a06:fb00:1::2:77NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2
dns5.cloudns.net 185.136.98.77NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-2
dns5.cloudns.net 2a06:fb00:1::3:77NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2
dns6.cloudns.net 185.136.99.77NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-2
dns6.cloudns.net 2a06:fb00:1::4:77NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2

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: dns1.cloudns.net: "de3-2"; dns2.cloudns.net: "de3-2"; dns5.cloudns.net: "de3-2"; dns6.cloudns.net: "de3-2".
    #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 2026102001 · primary dns1.cloudns.net

Found

Primary (MNAME)
dns1.cloudns.net
Contact (RNAME)
support.synaxon.de
Serial
2026102001
Refresh / retry
7200 s / 1800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns1.cloudns.net (185.136.96.77)2026102001
dns1.cloudns.net (2a06:fb00:1::1:77)2026102001
dns2.cloudns.net (185.136.97.77)2026102001
dns2.cloudns.net (2a06:fb00:1::2:77)2026102001
dns5.cloudns.net (185.136.98.77)2026102001
dns5.cloudns.net (2a06:fb00:1::3:77)2026102001
dns6.cloudns.net (185.136.99.77)2026102001
dns6.cloudns.net (2a06:fb00:1::4:77)2026102001

Checks

  • ✓ Serial 2026102001 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 30m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.cloudns.net is one of the listed nameservers.
  • ✓ Contact support@synaxon.de #25
    The SOA RNAME support.synaxon.de means support@synaxon.de.
  • ✓ Date-based serial #26
    The serial 2026102001 follows the YYYYMMDDnn convention (2026-10-20).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
0 iterations, 0-byte salt
Signatures valid until
19 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
60897ECDSAP256SHA256 (13)SHA256 6807C8E7820F16BD…yes
40898ECDSAP256SHA256 (13)SHA256 C027A3D6216A2CF4…yes

DNSKEY in the zone

Key tagRoleAlgorithm
60897KSK (257)ECDSAP256SHA256 (13)
40898ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 60897 (SHA256), key tag 40898 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-11-19 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-19 07:11 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

warn

19 records at the apex

Found

Read from
185.136.96.77:53
TypeValueTTL
SOAdns1.cloudns.net. support.synaxon.de. 2026102001 7200 1800 1209600 36003600
NSdns6.cloudns.net.3600
NSdns2.cloudns.net.3600
NSdns1.cloudns.net.3600
NSdns5.cloudns.net.3600
A63.182.13.16360
A3.126.188.16560
A63.177.150.7660
AAAA2a05:d024:83:8005:395e:1545:36be:434560
AAAA2a05:d024:83:8024:da39:1b88:8790:800f60
AAAA2a05:d024:83:801a:d6d7:a599:441d:240460
MX5 alt2.aspmx.l.google.com.3600
MX5 alt1.aspmx.l.google.com.3600
MX10 alt3.aspmx.l.google.com.3600
MX10 alt4.aspmx.l.google.com.3600
MX1 aspmx.l.google.com.3600
TXT"v=spf1 include:_spf.google.com ~all"3600
TXT"google-site-verification=XPCMxjiEOQ0TcOSo7ajRvh0mwzqAUgPhx3kqNhCbibs"3600
TXT"google-site-verification=WLE2eUo_pLvkJ4ltMyyRy1mX6Un4hN1ZAzI5CwtUALQ"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), AAAA (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
    #32
  • ✓ 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