hafas.de

Checked 21 October 2026, 22:41 UTC · via 8.8.8.8
!Passed with warnings
21 passed 2 warnings 0 failed 6 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.hafas.de, ns.plusline.de, ns.s.plusline.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.hafas.de, ns.plusline.de, ns.s.plusline.de
NS in the zone
ns.hafas.de, ns.plusline.de, ns.s.plusline.de
NameserverAddressesNetwork (AS)Glue
ns.hafas.de213.83.5.130AS12306 PLUSLINE - Plus.line AG, DE213.83.5.130
ns.plusline.de212.19.48.14 2a02:2e0:1:2:3:4:5:6AS12306 PLUSLINE - Plus.line AG, DE AS12306 PLUSLINE - Plus.line AG, DE212.19.48.14 2a02:2e0:1:2:3:4:5:6
ns.s.plusline.de212.19.40.14 2a02:2e0:a:b:c:d:e:fAS12306 PLUSLINE - Plus.line AG, DE AS12306 PLUSLINE - Plus.line AG, DE212.19.40.14 2a02:2e0:a:b:c:d:e:f

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.hafas.de, ns.plusline.de, ns.s.plusline.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: ns.hafas.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 3 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12306 (PLUSLINE - Plus.line AG, DE): 5 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns.hafas.de.
    #13

Nameservers

warn

5 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.hafas.de 213.83.5.130NOERROR, 9 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
ns.plusline.de 212.19.48.14NOERROR, 4 ms, authoritativenoyes / yesrefusednameserver
ns.plusline.de 2a02:2e0:1:2:3:4:5:6NOERROR, 4 ms, authoritativenoyes / yesrefusednameserver
ns.s.plusline.de 212.19.40.14NOERROR, 4 ms, authoritativenoyes / yesrefusednameserver
ns.s.plusline.de 2a02:2e0:a:b:c:d:e:fNOERROR, 4 ms, authoritativenoyes / yesrefusednameserver

Checks

  • ✓ All respond #14
    All 5 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.hafas.de: "9.20.29-1~deb13u1-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 2026101501 · primary ns.hafas.de

Found

Primary (MNAME)
ns.hafas.de
Contact (RNAME)
hostmaster.hacon.de
Serial
2026101501
Refresh / retry
18800 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns.hafas.de (213.83.5.130)2026101501
ns.plusline.de (212.19.48.14)2026101501
ns.plusline.de (2a02:2e0:1:2:3:4:5:6)2026101501
ns.s.plusline.de (212.19.40.14)2026101501
ns.s.plusline.de (2a02:2e0:a:b:c:d:e:f)2026101501

Checks

  • ✓ Serial 2026101501 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 5h13m20s, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.hafas.de is one of the listed nameservers.
  • ✓ Contact hostmaster@hacon.de #25
    The SOA RNAME hostmaster.hacon.de means hostmaster@hacon.de.
  • ✓ Date-based serial #26
    The serial 2026101501 follows the YYYYMMDDnn convention (2026-10-15).

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

8 records at the apex

Found

Read from
213.83.5.130:53
TypeValueTTL
SOAns.hafas.de. hostmaster.hacon.de. 2026101501 18800 7200 604800 864003600
NSns.plusline.de.3600
NSns.hafas.de.3600
NSns.s.plusline.de.3600
A213.83.5.1643600
MX0 hafas-de.mail.protection.outlook.com.3600
TXT"MS=ms60407772"3600
TXT"v=spf1 ip4:213.83.5.128/26 ip4:83.246.89.10 ip6:2a02:790:1:9::a/64 include:spf.protection.outlook.com -all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 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.
  • 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