uni-speyer.de

Checked 22 October 2026, 00:50 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

ns-auth.rptu.de, srvbrei.dhv-speyer.de, srvrei.dhv-speyer.de, xlink1.xlink.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns-auth.rptu.de, srvbrei.dhv-speyer.de, srvrei.dhv-speyer.de, xlink1.xlink.net
NS in the zone
ns-auth.rptu.de, srvbrei.dhv-speyer.de, srvrei.dhv-speyer.de, xlink1.xlink.net
NameserverAddressesNetwork (AS)Glue
ns-auth.rptu.de131.246.1.117 131.246.9.117 2a03:63c0::53:1002 2a03:63c0::53:1001AS199578 UNIKL - Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-Landau, DE AS199578 UNIKL - Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-Landau, DE AS199578 UNIKL - Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-Landau, DE AS199578 UNIKL - Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-Landau, DE-
srvbrei.dhv-speyer.de192.124.238.250AS2857 RLP-NET - Johannes Gutenberg-Universitaet Mainz, DE192.124.238.250
srvrei.dhv-speyer.de192.124.238.241AS2857 RLP-NET - Johannes Gutenberg-Universitaet Mainz, DE192.124.238.241
xlink1.xlink.net194.45.97.99AS6724 STRATO - Strato GmbH, DE-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-auth.rptu.de, srvbrei.dhv-speyer.de, srvrei.dhv-speyer.de, xlink1.xlink.net.
  • ✓ 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.
  • i
    One address family in one network
    all IPv6 addresses are in 2a03:63c0::/48, while the other address family is spread over several networks.
    #10
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS199578 (UNIKL - Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-Landau, DE): 4 addresses; AS2857 (RLP-NET - Johannes Gutenberg-Universitaet Mainz, DE): 2 addresses; AS6724 (STRATO - Strato GmbH, DE): 1 address.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: srvbrei.dhv-speyer.de, srvrei.dhv-speyer.de, xlink1.xlink.net.
    #13

Nameservers

warn

7 of 7 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-auth.rptu.de 131.246.1.117NOERROR, 7 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
ns-auth.rptu.de 131.246.9.117NOERROR, 7 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
ns-auth.rptu.de 2a03:63c0::53:1002NOERROR, 12 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
ns-auth.rptu.de 2a03:63c0::53:1001NOERROR, 12 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
srvbrei.dhv-speyer.de 192.124.238.250NOERROR, 5 ms, authoritativenoyes / yesrefused9.16.23-RH
srvrei.dhv-speyer.de 192.124.238.241NOERROR, 5 ms, authoritativenoyes / yesrefused9.16.23-RH
xlink1.xlink.net 194.45.97.99NOERROR, 13 ms, authoritativenoyes / yesrefused9.9.5-9+deb8u19-Debian

Checks

  • ✓ All respond #14
    All 7 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: ns-auth.rptu.de: "9.20.29-1~deb13u1-Debian"; srvbrei.dhv-speyer.de: "9.16.23-RH"; srvrei.dhv-speyer.de: "9.16.23-RH"; xlink1.xlink.net: "9.9.5-9+deb8u19-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 2026021303 · primary srvrei.dhv-speyer.de

Found

Primary (MNAME)
srvrei.dhv-speyer.de
Contact (RNAME)
srvbrei.dhv-speyer.de
Serial
2026021303
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-auth.rptu.de (131.246.1.117)2026021303
ns-auth.rptu.de (131.246.9.117)2026021303
ns-auth.rptu.de (2a03:63c0::53:1002)2026021303
ns-auth.rptu.de (2a03:63c0::53:1001)2026021303
srvbrei.dhv-speyer.de (192.124.238.250)2026021303
srvrei.dhv-speyer.de (192.124.238.241)2026021303
xlink1.xlink.net (194.45.97.99)2026021303

Checks

  • ✓ Serial 2026021303 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 srvrei.dhv-speyer.de is one of the listed nameservers.
  • ✓ Contact srvbrei@dhv-speyer.de #25
    The SOA RNAME srvbrei.dhv-speyer.de means srvbrei@dhv-speyer.de.
  • ✓ Date-based serial #26
    The serial 2026021303 follows the YYYYMMDDnn convention (2026-02-13).

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

11 records at the apex

Found

Read from
131.246.1.117:53
TypeValueTTL
SOAsrvrei.dhv-speyer.de. srvbrei.dhv-speyer.de. 2026021303 28800 7200 604800 8640086400
NSsrvbrei.dhv-speyer.de.86400
NSns-auth.rptu.de.86400
NSsrvrei.dhv-speyer.de.86400
NSxlink1.xlink.net.86400
A192.124.238.24686400
MX10 mailgate-3.zdv.net.300
MX10 mailgate-1.zdv.net.300
MX10 mailgate-2.zdv.net.300
TXT"google-site-verification=6Zu9h6qWf_wJJvrTzJ7Xi9CvXkMrpeAKxrl5-80Qt2U"86400
TXT"v=spf1 include:zdv.net include:mail.rz.uni-speyer.de ~all"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 5m, 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.
  • 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