hahn-airport.de

Checked 21 October 2026, 22:41 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

dns2.airit.net, mnl.airit.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns2.airit.net, mnl.airit.net
NS in the zone
dns2.airit.net, mnl.airit.net
NameserverAddressesNetwork (AS)Glue
dns2.airit.net188.92.134.56 2001:16f0:d003:2::56AS49220 airit-as - airit-as, DE AS49220 airit-as - airit-as, DE-
mnl.airit.net185.68.254.115 2001:16f7:d003:2::115AS201370 airit-hhn - AirIT Services GmbH, DE AS201370 airit-hhn - AirIT Services GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns2.airit.net, mnl.airit.net.
    #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: AS201370 (airit-hhn - AirIT Services GmbH, DE): 2 addresses; AS49220 (airit-as - airit-as, DE): 2 addresses.
  • i
    All nameserver names under .net
    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

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns2.airit.net 188.92.134.56NOERROR, 5 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
dns2.airit.net 2001:16f0:d003:2::56NOERROR, 6 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
mnl.airit.net 185.68.254.115NOERROR, 14 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian
mnl.airit.net 2001:16f7:d003:2::115NOERROR, 14 ms, authoritativenoyes / yesrefused9.20.29-1~deb13u1-Debian

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: dns2.airit.net: "9.20.29-1~deb13u1-Debian"; mnl.airit.net: "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 1787038620 · primary mnl.airit.net

Found

Primary (MNAME)
mnl.airit.net
Contact (RNAME)
hostmaster.airit.net
Serial
1787038620
Refresh / retry
43200 s / 7200 s
Expire
2419200 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns2.airit.net (188.92.134.56)1787038620
dns2.airit.net (2001:16f0:d003:2::56)1787038620
mnl.airit.net (185.68.254.115)1787038620
mnl.airit.net (2001:16f7:d003:2::115)1787038620

Checks

  • ✓ Serial 1787038620 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 2h, expire 28d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver mnl.airit.net is one of the listed nameservers.
  • ✓ Contact hostmaster@airit.net #25
    The SOA RNAME hostmaster.airit.net means hostmaster@airit.net.
  • ✓ Timestamp serial #26
    The serial 1787038620 is a Unix timestamp (2026-08-18 07:37 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

9 records at the apex

Found

Read from
188.92.134.56:53
TypeValueTTL
SOAmnl.airit.net. hostmaster.airit.net. 1787038620 43200 7200 2419200 36003600
NSdns2.airit.net.86400
NSmnl.airit.net.86400
A159.69.109.1833600
AAAA2a01:4f8:1c1e:4533::86400
MX10 hahnairport-de01b.mail.protection.outlook.com.3600
TXT"hibp-verify=dweb_bav1du92riegwlkrb28s69zb"3600
TXT"MS=ms53668910"3600
TXT"v=spf1 mx ip4:159.69.109.183 ip6:2a01:4f8:1c1e:4533::/64 include:amazonses.com include:spf.protection.outlook.com -all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1d, MX 1h, 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