foren-city.de

Checked 21 October 2026, 22:30 UTC · via 8.8.8.8
✗Problems found
20 passed 2 warnings 1 failed 6 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.sedoparking.com, ns2.sedoparking.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.sedoparking.com, ns2.sedoparking.com
NS in the zone
ns1.sedoparking.com, ns2.sedoparking.com
NameserverAddressesNetwork (AS)Glue
ns1.sedoparking.com91.195.241.8 3.130.216.63AS47846 SEDO-AS - SEDO GmbH, DE AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns2.sedoparking.com91.195.240.8 34.211.188.210AS47846 SEDO-AS - SEDO GmbH, DE AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.sedoparking.com, ns2.sedoparking.com.
    #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 4 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS16509 (AMAZON-02 - Amazon.com, Inc., US): 2 addresses; AS47846 (SEDO-AS - SEDO GmbH, DE): 2 addresses.
  • i
    All nameserver names under .com
    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

fail

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.sedoparking.com 91.195.241.8NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns1.sedoparking.com 3.130.216.63NOERROR, 110 ms, authoritativenoyes / yesrefused-
ns2.sedoparking.com 91.195.240.8NOERROR, 11 ms, authoritativeOPENyes / yesrefused-
ns2.sedoparking.com 34.211.188.210NOERROR, 174 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 4 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✗
    Open recursion
    These nameservers resolve names for anyone, which makes them usable for DNS amplification attacks and cache poisoning: ns2.sedoparking.com (91.195.240.8). Disable recursion on authoritative servers.
    #16
  • ✓ 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 2018051601 · primary ns1.sedoparking.com

Found

Primary (MNAME)
ns1.sedoparking.com
Contact (RNAME)
hostmaster.sedo.de
Serial
2018051601
Refresh / retry
86400 s / 10800 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.sedoparking.com (91.195.241.8)2018051601
ns1.sedoparking.com (3.130.216.63)2018051601
ns2.sedoparking.com (91.195.240.8)2018051601
ns2.sedoparking.com (34.211.188.210)2018051601

Checks

  • ✓ Serial 2018051601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 3h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.sedoparking.com is one of the listed nameservers.
  • ✓ Contact hostmaster@sedo.de #25
    The SOA RNAME hostmaster.sedo.de means hostmaster@sedo.de.
  • ✓ Date-based serial #26
    The serial 2018051601 follows the YYYYMMDDnn convention (2018-05-16).

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

6 records at the apex

Found

Read from
91.195.241.8:53
TypeValueTTL
SOAns1.sedoparking.com. hostmaster.sedo.de. 2018051601 86400 10800 604800 8640086400
NSns2.sedoparking.com.86400
NSns1.sedoparking.com.86400
A64.190.63.22214399
MX0 localhost.3600
TXT"v=spf1 -all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 3h59m59s, MX 1h, NS 1d.
  • ✓ 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