hs-augsburg.de

Checked 21 October 2026, 22:51 UTC · via 8.8.8.8
!Passed with warnings
27 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

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.
  • ✓ 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.
  • 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, 13 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, 14 ms, authoritativenoyes / yesrefused0
deneb.dfn.de 2001:638:800:1::9NOERROR, 14 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 2026101254 · primary av2.rz.fh-augsburg.de

Found

Primary (MNAME)
av2.rz.fh-augsburg.de
Contact (RNAME)
root.av2.rz.fh-augsburg.de
Serial
2026101254
Refresh / retry
10800 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
av2.rz.fh-augsburg.de (141.82.16.242)2026101254
av2.rz.fh-augsburg.de (2001:638:102:1::a:2)2026101254
deneb.dfn.de (192.76.176.9)2026101254
deneb.dfn.de (2001:638:800:1::9)2026101254
primestation.rz.fh-augsburg.de (141.82.16.200)2026101254
primestation.rz.fh-augsburg.de (2001:638:102:1::a:1)2026101254

Checks

  • ✓ Serial 2026101254 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 2h, expire 14d, 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 2026101254 follows the YYYYMMDDnn convention (2026-10-12).

DNSSEC

warn

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
5974RSASHA256 (8)SHA256 9F83BA090D8AF749…yes

DNSKEY in the zone

Key tagRoleAlgorithm
57079ZSK (256)RSASHA256 (8)
5974KSK (257)RSASHA256 (8)

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 5974 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • !
    Signatures expire soon
    The earliest signature expires at 2026-10-28 09:32 UTC (in 155h0m0s). Check that automatic re-signing works.
    #30
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

pass

18 records at the apex

Found

Read from
141.82.16.242:53
TypeValueTTL
SOAav2.RZ.FH-Augsburg.DE. root.av2.RZ.FH-Augsburg.DE. 2026101254 10800 7200 1209600 864003600
NSdeneb.dfn.de.3600
NSprimestation.RZ.FH-Augsburg.DE.3600
NSav2.RZ.FH-Augsburg.DE.3600
A141.82.11.303600
AAAA2001:638:102:201::11:303600
MX30 postfix2-out.RZ.HS-Augsburg.DE.3600
MX30 postfix1-out.RZ.HS-Augsburg.DE.3600
TXT"v=spf1 ip4:141.82.11.25/24 ip4:141.82.217.130/24 ip6:2001:638:102:2::217:131/80 ip6:2001:638:102:201::11:25/80 include:_spf.rexx-suite.com a:bvbvxmail.bib-bvb.de include:spf.protection.outlook.com include:customer.securityeducation.com ?all"3600
TXT"google-site-verification=KiP7awhDTOLH_1BRMIAsxONIwpjSNtdO1ApatEh9rV8"3600
TXT"HARICA-xFWNYhJtAaSRJn429lt"3600
TXT"HARICA-lIxx49k1CA0S5s24Q7i"3600
TXT"MS=188F428077FA5A409D35B84AE14DAE54AD6890DF"3600
TXT"adobe-idp-site-verification=408231ebcdc4a9d3940cee6b041468693895c7d412fe7fa3e6febd9c9d8e4dcd"3600
CAA0 issue "pki.dfn.de"3600
CAA0 issue "sectigo.com"3600
CAA0 issue "harica.gr"3600
CAA0 issue "letsencrypt.org"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: pki.dfn.de, sectigo.com, harica.gr, letsencrypt.org.