giessen46ers.de

Checked 21 October 2026, 22:40 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 4 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

ns.sylphen.com, ns2.sylphen.com, ns3.sylphen.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.sylphen.com, ns2.sylphen.com, ns3.sylphen.com
NS in the zone
ns.sylphen.com, ns2.sylphen.com, ns3.sylphen.com
NameserverAddressesNetwork (AS)Glue
ns.sylphen.com62.27.44.214AS12312 ECOTEL - ecotel communication ag, DE-
ns2.sylphen.com195.185.213.143AS12312 ECOTEL - ecotel communication ag, DE-
ns3.sylphen.com18.157.202.147AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.sylphen.com, ns2.sylphen.com, ns3.sylphen.com.
  • ✓ 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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12312 (ECOTEL - ecotel communication ag, DE): 2 addresses; AS16509 (AMAZON-02 - Amazon.com, Inc., US): 1 address.
  • 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

info

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.sylphen.com 62.27.44.214NOERROR, 4 ms, authoritativenoyes / yesrefusedunknown
ns2.sylphen.com 195.185.213.143NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns3.sylphen.com 18.157.202.147NOERROR, 4 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 3 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: ns.sylphen.com: "unknown".
    #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 2026092409 · primary ns.sylphen.com

Found

Primary (MNAME)
ns.sylphen.com
Contact (RNAME)
info.sylphen.com
Serial
2026092409
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns.sylphen.com (62.27.44.214)2026092409
ns2.sylphen.com (195.185.213.143)2026092409
ns3.sylphen.com (18.157.202.147)2026092409

Checks

  • ✓ Serial 2026092409 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.sylphen.com is one of the listed nameservers.
  • ✓ Contact info@sylphen.com #25
    The SOA RNAME info.sylphen.com means info@sylphen.com.
  • ✓ Date-based serial #26
    The serial 2026092409 follows the YYYYMMDDnn convention (2026-09-24).

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

pass

10 records at the apex

Found

Read from
62.27.44.214:53
TypeValueTTL
SOAns.sylphen.com. info.sylphen.com. 2026092409 28800 7200 604800 8640086400
NSns.sylphen.com.86400
NSns2.sylphen.com.86400
NSns3.sylphen.com.86400
A198.202.211.1600
MX0 giessen46ers-de.mail.protection.outlook.com.3600
TXT"MS=ms11909889"3600
TXT"v=spf1 a:mx4.eventim.de include:spf.protection.outlook.com include:spf.crsend.com -all"3600
CAA0 issuewild "pki.goog"300
CAA0 issuewild "letsencrypt.org"300

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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: pki.goog, letsencrypt.org.