froscon.de

Checked 21 October 2026, 22:31 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

info

ns1.as62269.net, ns1.froscon.org

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.as62269.net, ns1.froscon.org
NS in the zone
ns1.as62269.net, ns1.froscon.org
NameserverAddressesNetwork (AS)Glue
ns1.as62269.net193.56.133.15 2a11:5b00::15AS62269 LUKAS-SCHAUER - Lukas Schauer, DE AS62269 LUKAS-SCHAUER - Lukas Schauer, DE-
ns1.froscon.org116.203.66.101 2a01:4f8:1c1e:d558::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.as62269.net, ns1.froscon.org.
    #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 2 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 addresses; AS62269 (LUKAS-SCHAUER - Lukas Schauer, DE): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.as62269.net 193.56.133.15NOERROR, 7 ms, authoritativenoyes / yesrefusedKnot DNS 3.5.1
ns1.as62269.net 2a11:5b00::15NOERROR, 8 ms, authoritativenoyes / yesrefusedKnot DNS 3.5.1
ns1.froscon.org 116.203.66.101NOERROR, 3 ms, authoritativenoyes / yesrefusedKnot DNS 3.3.9
ns1.froscon.org 2a01:4f8:1c1e:d558::1NOERROR, 3 ms, authoritativenoyes / yesrefusedKnot DNS 3.3.9

Checks

  • ✓ All respond #14
    All 4 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.as62269.net: "Knot DNS 3.5.1"; ns1.froscon.org: "Knot DNS 3.3.9". 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 1774441694 · primary ns1.froscon.org

Found

Primary (MNAME)
ns1.froscon.org
Contact (RNAME)
admin.froscon.org
Serial
1774441694
Refresh / retry
4800 s / 1800 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.as62269.net (193.56.133.15)1774441694
ns1.as62269.net (2a11:5b00::15)1774441694
ns1.froscon.org (116.203.66.101)1774441694
ns1.froscon.org (2a01:4f8:1c1e:d558::1)1774441694

Checks

  • ✓ Serial 1774441694 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 80m, retry 30m, expire 14d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.froscon.org is one of the listed nameservers.
  • ✓ Contact admin@froscon.org #25
    The SOA RNAME admin.froscon.org means admin@froscon.org.
  • ✓ Timestamp serial #26
    The serial 1774441694 is a Unix timestamp (2026-03-25 12:28 UTC).

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

10 records at the apex

Found

Read from
193.56.133.15:53
TypeValueTTL
SOAns1.froscon.org. admin.froscon.org. 1774441694 4800 1800 1209600 3001800
NSns1.as62269.net.600
NSns1.froscon.org.600
A159.69.212.21614400
AAAA2a01:4f8:1c1e:ce46::114400
MX10 mail.froscon.org.86400
TXT"v=spf1 include:_spf.froscon.org include:amazonses.com ~all"3600
TXT"mailconfig=https://autodiscover.froscon.org/mail/config-v1.1.xml"3600
TXT"google-site-verification=vTqBfMfAbsaDQC5kEeep80vsR8VQkFrEvaVk8o4r_Qw"3600
CAA1 issue "letsencrypt.org"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 4h, AAAA 4h, MX 1d, NS 10m. The NS TTL at the parent is 1d and in the zone 10m; 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
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: letsencrypt.org.