fh-augsburg.de

Checked 21 October 2026, 22:20 UTC · via 8.8.8.8
!Passed with warnings
22 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

info

av2.rz.fh-augsburg.de, deneb.dfn.de, primestation.rz.fh-augsburg.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
av2.rz.fh-augsburg.de, deneb.dfn.de, primestation.rz.fh-augsburg.de
NS in the zone
av2.rz.fh-augsburg.de, deneb.dfn.de, primestation.rz.fh-augsburg.de
NameserverAddressesNetwork (AS)Glue
av2.rz.fh-augsburg.de141.82.16.242 2001:638:102:1::a:2AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE141.82.16.242 2001:638:102:1::a:2
deneb.dfn.de192.76.176.9 2001:638:800:1::9AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE-
primestation.rz.fh-augsburg.de141.82.16.200 2001:638:102:1::a:1AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE141.82.16.200 2001:638:102:1::a:1

Checks

  • ✓ 3 nameservers #6
    Delegated to av2.rz.fh-augsburg.de, deneb.dfn.de, primestation.rz.fh-augsburg.de.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: av2.rz.fh-augsburg.de, primestation.rz.fh-augsburg.de.
  • ✓ 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.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE): 6 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 .de
    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

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
av2.rz.fh-augsburg.de 141.82.16.242NOERROR, 12 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u1-Debian
av2.rz.fh-augsburg.de 2001:638:102:1::a:2NOERROR, 13 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u1-Debian
deneb.dfn.de 192.76.176.9NOERROR, 15 ms, authoritativenoyes / yesrefused0
deneb.dfn.de 2001:638:800:1::9NOERROR, 15 ms, authoritativenoyes / yesrefused0
primestation.rz.fh-augsburg.de 141.82.16.200NOERROR, 13 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u1-Debian
primestation.rz.fh-augsburg.de 2001:638:102:1::a:1NOERROR, 13 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u1-Debian

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: av2.rz.fh-augsburg.de: "9.18.49-1~deb12u1-Debian"; primestation.rz.fh-augsburg.de: "9.18.49-1~deb12u1-Debian". 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 2026092100 · primary av2.rz.fh-augsburg.de

Found

Primary (MNAME)
av2.rz.fh-augsburg.de
Contact (RNAME)
root.av2.rz.fh-augsburg.de
Serial
2026092100
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
av2.rz.fh-augsburg.de (141.82.16.242)2026092100
av2.rz.fh-augsburg.de (2001:638:102:1::a:2)2026092100
deneb.dfn.de (192.76.176.9)2026092100
deneb.dfn.de (2001:638:800:1::9)2026092100
primestation.rz.fh-augsburg.de (141.82.16.200)2026092100
primestation.rz.fh-augsburg.de (2001:638:102:1::a:1)2026092100

Checks

  • ✓ Serial 2026092100 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver av2.rz.fh-augsburg.de is one of the listed nameservers.
  • ✓ Contact root@av2.rz.fh-augsburg.de #25
    The SOA RNAME root.av2.rz.fh-augsburg.de means root@av2.rz.fh-augsburg.de.
  • ✓ Date-based serial #26
    The serial 2026092100 follows the YYYYMMDDnn convention (2026-09-21).

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

7 records at the apex

Found

Read from
141.82.16.242:53
TypeValueTTL
SOAav2.RZ.FH-Augsburg.DE. root.av2.RZ.FH-Augsburg.DE. 2026092100 10800 3600 604800 864001800
NSprimestation.RZ.FH-Augsburg.DE.1800
NSav2.RZ.FH-Augsburg.DE.1800
NSdeneb.dfn.de.1800
MX30 postfix2-out.RZ.HS-Augsburg.DE.1800
MX30 postfix1-out.RZ.HS-Augsburg.DE.1800
TXT"HARICA-pgccT8ILKrDBZQksE8v"1800

Checks

  • ✓ TTLs within range #32
    TTLs: MX 30m, NS 30m. The NS TTL at the parent is 1d and in the zone 30m; resolvers may use either.
  • ✓ 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