narr.de

Checked 21 October 2026, 23:31 UTC · via 8.8.8.8
!Passed with warnings
23 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

ns.rackspeed-cloud.com, ns.rackspeed-cloud.de, ns.rackspeed-cloud.eu

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.rackspeed-cloud.com, ns.rackspeed-cloud.de, ns.rackspeed-cloud.eu
NS in the zone
ns.rackspeed-cloud.com, ns.rackspeed-cloud.de, ns.rackspeed-cloud.eu
NameserverAddressesNetwork (AS)Glue
ns.rackspeed-cloud.com51.75.92.17 2001:41d0:701:1000::1e3cAS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR-
ns.rackspeed-cloud.de91.99.197.63AS24940 HETZNER-AS - Hetzner Online GmbH, DE91.99.197.63
ns.rackspeed-cloud.eu185.147.217.91AS30962 COMTRANCE-AS - comtrance service GmbH, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.rackspeed-cloud.com, ns.rackspeed-cloud.de, ns.rackspeed-cloud.eu.
  • ✓ 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 3 IPv4 /24s and 1 IPv6 /48.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS16276 (OVH - OVH SAS, FR): 2 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 1 address; AS30962 (COMTRANCE-AS - comtrance service GmbH, DE): 1 address.
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .com, .de, .eu.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns.rackspeed-cloud.de, ns.rackspeed-cloud.eu.
    #13

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.rackspeed-cloud.com 51.75.92.17NOERROR, 5 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 13:38:30 by root@bh-centos-8.dev.cpanel.net)
ns.rackspeed-cloud.com 2001:41d0:701:1000::1e3cNOERROR, 5 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 13:38:30 by root@bh-centos-8.dev.cpanel.net)
ns.rackspeed-cloud.de 91.99.197.63NOERROR, 1 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)
ns.rackspeed-cloud.eu 185.147.217.91NOERROR, 6 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 13:38:30 by root@bh-centos-8.dev.cpanel.net)

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: ns.rackspeed-cloud.com: "PowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 13:38:30 by root@bh-centos-8.dev.cpanel.net)"; ns.rackspeed-cloud.de: "PowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)"; ns.rackspeed-cloud.eu: "PowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 13:38:30 by root@bh-centos-8.dev.cpanel.net)". 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 2026102101 · primary ns.rackspeed-cloud.de

Found

Primary (MNAME)
ns.rackspeed-cloud.de
Contact (RNAME)
2ndlevel.rackspeed.de
Serial
2026102101
Refresh / retry
3600 s / 1800 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns.rackspeed-cloud.com (51.75.92.17)2026102101
ns.rackspeed-cloud.com (2001:41d0:701:1000::1e3c)2026102101
ns.rackspeed-cloud.de (91.99.197.63)2026102101
ns.rackspeed-cloud.eu (185.147.217.91)2026102101

Checks

  • ✓ Serial 2026102101 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 30m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.rackspeed-cloud.de is one of the listed nameservers.
  • ✓ Contact 2ndlevel@rackspeed.de #25
    The SOA RNAME 2ndlevel.rackspeed.de means 2ndlevel@rackspeed.de.
  • ✓ Date-based serial #26
    The serial 2026102101 follows the YYYYMMDDnn convention (2026-10-21).

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
51.75.92.17:53
TypeValueTTL
SOAns.rackspeed-cloud.de. 2ndlevel.rackspeed.de. 2026102101 3600 1800 1209600 864003600
NSns.rackspeed-cloud.eu.3600
NSns.rackspeed-cloud.com.3600
NSns.rackspeed-cloud.de.3600
A194.6.210.50300
A93.89.5.57300
AAAA2a00:f48:1008::210:50:10300
MX0 narr-de.mail.protection.outlook.com.300
TXT"v=spf1 ip4:93.89.5.57 ip4:194.6.210.50 ip6:2a00:f48:1008:0:0:210:50:10 ip4:213.9.20.121 ip4:45.90.4.122 ip4:37.120.183.3 include:spf.protection.outlook.com include:spf.crsend.com -all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, 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