kvbawue.de

Checked 21 October 2026, 23:10 UTC · via 8.8.8.8
!Passed with warnings
23 passed 1 warning 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

acns01.xaas.systems, acns02.xaas.systems, acns03.xaas.systems, acns04.xaas.systems, acns05.xaas.systems

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
acns01.xaas.systems, acns02.xaas.systems, acns03.xaas.systems, acns04.xaas.systems, acns05.xaas.systems
NS in the zone
acns01.xaas.systems, acns02.xaas.systems, acns03.xaas.systems, acns04.xaas.systems, acns05.xaas.systems
NameserverAddressesNetwork (AS)Glue
acns01.xaas.systems217.146.18.1 2a00:11c0:aa1::1AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT-
acns02.xaas.systems188.172.248.1 2a05:8900:aa1::1AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT-
acns03.xaas.systems213.227.160.1 2605:380:aa1::1AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT-
acns04.xaas.systems213.227.191.1 2803:ad80:aa1::1AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT-
acns05.xaas.systems185.81.208.1 2a00:11c0:1010::1AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT AS42388 ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT-

Checks

  • ✓ 5 nameservers #6
    Delegated to acns01.xaas.systems, acns02.xaas.systems, acns03.xaas.systems, acns04.xaas.systems, acns05.xaas.systems.
  • ✓ 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 5 IPv4 /24s and 5 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS42388 (ANX-CLOUDDNS - Anexia Cloud Solutions GmbH, AT): 10 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 .systems
    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

pass

10 of 10 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
acns01.xaas.systems 217.146.18.1NOERROR, 3 ms, authoritativenoyes / yesrefused-
acns01.xaas.systems 2a00:11c0:aa1::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
acns02.xaas.systems 188.172.248.1NOERROR, 6 ms, authoritativenoyes / yesrefused-
acns02.xaas.systems 2a05:8900:aa1::1NOERROR, 12 ms, authoritativenoyes / yesrefused-
acns03.xaas.systems 213.227.160.1NOERROR, 3 ms, authoritativenoyes / yesrefused-
acns03.xaas.systems 2605:380:aa1::1NOERROR, 10 ms, authoritativenoyes / yesrefused-
acns04.xaas.systems 213.227.191.1NOERROR, 8 ms, authoritativenoyes / yesrefused-
acns04.xaas.systems 2803:ad80:aa1::1NOERROR, 12 ms, authoritativenoyes / yesrefused-
acns05.xaas.systems 185.81.208.1NOERROR, 3 ms, authoritativenoyes / yesrefused-
acns05.xaas.systems 2a00:11c0:1010::1NOERROR, 13 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 10 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 119 · primary acns02.xaas.systems

Found

Primary (MNAME)
acns02.xaas.systems
Contact (RNAME)
support.anexia-it.com
Serial
119
Refresh / retry
14400 s / 7200 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
acns01.xaas.systems (217.146.18.1)119
acns01.xaas.systems (2a00:11c0:aa1::1)119
acns02.xaas.systems (188.172.248.1)119
acns02.xaas.systems (2a05:8900:aa1::1)119
acns03.xaas.systems (213.227.160.1)119
acns03.xaas.systems (2605:380:aa1::1)119
acns04.xaas.systems (213.227.191.1)119
acns04.xaas.systems (2803:ad80:aa1::1)119
acns05.xaas.systems (185.81.208.1)119
acns05.xaas.systems (2a00:11c0:1010::1)119

Checks

  • ✓ Serial 119 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 2h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver acns02.xaas.systems is one of the listed nameservers.
  • ✓ Contact support@anexia-it.com #25
    The SOA RNAME support.anexia-it.com means support@anexia-it.com.
  • ✓ Counter serial #26
    The serial 119 is a plain counter.

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

17 records at the apex

Found

Read from
217.146.18.1:53
TypeValueTTL
SOAacns02.xaas.systems. support.anexia-it.com. 119 14400 7200 604800 36003600
NSacns05.xaas.systems.3600
NSacns02.xaas.systems.3600
NSacns01.xaas.systems.3600
NSacns04.xaas.systems.3600
NSacns03.xaas.systems.3600
A77.95.220.373600
MX10 mta2.kvbawue.de.600
MX20 mta1.kvbawue.de.600
TXT"adobe-idp-site-verification=c6d547801144ddf0550a86fc4e143bd210101d4467b046da1bb17f023fb9e18f"10
TXT"google-site-verification=M2zXdJYU0aq-9EtoNzoJmuMICUbupCMr0Mby-BpzYbo"10
TXT"teamviewer-sso-verification=9c5b0adc9a7845a797d36221619a8158"10
TXT"apple-domain-verification=42hqBBymdmnPy0Sx"10
TXT"citrix.mobile.ads.otp=nwoh7x8eqglvfcucr9lq653m"10
TXT"cisco-ci-domain-verification=6f62be0456aa7b8a24d6d530e51b593a88c9c62be023120bc0bb633a5e0dc5c4"10
TXT"v=spf1 mx ip4:95.215.212.113 ip4:62.245.159.20 ip4:62.245.159.41 ip4:62.245.159.42 ip4:62.55.182.68 include:spf.de.umantis.com include:spf.umantis.com include:_spf.retarus.com include:_spf.jpberlin.de ~all"10
TXT"duo_sso_verification=iPDAdM4wrP61WG5RQEG3huIoUTNotDYZxL14ARBLlEEJqbg3TDmU9wKPSiGWlezl"10

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 10m, 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