iridiumbrowser.de

Checked 21 October 2026, 23:00 UTC · via 8.8.8.8
✗Problems found
19 passed 2 warnings 1 failed 7 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

warn

ns1.netitwork.net, ns2.netitwork.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.netitwork.net, ns2.netitwork.net
NS in the zone
dns2.netitwork.de, dns4.netitwork.de, dns5.netitwork.de
NameserverAddressesNetwork (AS)Glue
dns2.netitwork.de (zone only)88.198.84.241 2a01:4f8:10a:35e::1AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE-
dns4.netitwork.de (zone only)62.204.183.133 2a02:f90:271::133AS12886 LEWTELNET - LEW TelNet GmbH, DE AS12886 LEWTELNET - LEW TelNet GmbH, DE-
dns5.netitwork.de (zone only)62.204.183.134 2a02:f90:271::134AS12886 LEWTELNET - LEW TelNet GmbH, DE AS12886 LEWTELNET - LEW TelNet GmbH, DE-
ns1.netitwork.net (parent only)62.204.183.133AS12886 LEWTELNET - LEW TelNet GmbH, DE-
ns2.netitwork.net (parent only)62.204.183.134AS12886 LEWTELNET - LEW TelNet GmbH, DE-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.netitwork.net, ns2.netitwork.net.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns1.netitwork.net, ns2.netitwork.net; only in the zone: dns2.netitwork.de, dns4.netitwork.de, dns5.netitwork.de. dns4.netitwork.de, dns5.netitwork.de, ns1.netitwork.net, ns2.netitwork.net report NS dns2.netitwork.de dns4.netitwork.de dns5.netitwork.de.
    #7
  • ✓ 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: AS12886 (LEWTELNET - LEW TelNet GmbH, DE): 6 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns1.netitwork.net, ns2.netitwork.net.
    #13

Nameservers

fail

6 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns2.netitwork.de 88.198.84.241no responsenono / no--
dns2.netitwork.de 2a01:4f8:10a:35e::1no responsenono / no--
dns4.netitwork.de 62.204.183.133NOERROR, 8 ms, authoritativenoyes / yesrefused-
dns4.netitwork.de 2a02:f90:271::133NOERROR, 9 ms, authoritativenoyes / yesrefused-
dns5.netitwork.de 62.204.183.134NOERROR, 8 ms, authoritativenoyes / yesrefused-
dns5.netitwork.de 2a02:f90:271::134NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns1.netitwork.net 62.204.183.133NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns2.netitwork.net 62.204.183.134NOERROR, 8 ms, authoritativenoyes / yesrefused-

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: dns2.netitwork.de (88.198.84.241): read udp 46.225.38.91:48993->88.198.84.241:53: i/o timeout; dns2.netitwork.de (2a01:4f8:10a:35e::1): read udp [2a01:4f8:1c1c:eebf::1]:35767->[2a01:4f8:10a:35e::1]:53: i/o timeout.
    #14
  • ✓ 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

info

serial 24 · primary niw-ucs-11.netit.work

Found

Primary (MNAME)
niw-ucs-11.netit.work
Contact (RNAME)
root.netit.work
Serial
24
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns4.netitwork.de (62.204.183.133)24
dns4.netitwork.de (2a02:f90:271::133)24
dns5.netitwork.de (62.204.183.134)24
dns5.netitwork.de (2a02:f90:271::134)24
ns1.netitwork.net (62.204.183.133)24
ns2.netitwork.net (62.204.183.134)24

Checks

  • ✓ Serial 24 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 1h.
  • i
    Hidden master (not resolvable)
    The primary nameserver niw-ucs-11.netit.work is not listed as a nameserver and does not resolve publicly: a hidden master, or a placeholder name. Some tools (e.g. dynamic updates) use MNAME to find the primary.
    #24
  • ✓ Contact root@netit.work #25
    The SOA RNAME root.netit.work means root@netit.work.
  • ✓ Counter serial #26
    The serial 24 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

7 records at the apex

Found

Read from
62.204.183.133:53
TypeValueTTL
SOAniw-ucs-11.netit.work. root.netit.work. 24 28800 7200 604800 360010800
NSdns4.netitwork.de.900
NSdns2.netitwork.de.900
NSdns5.netitwork.de.900
A78.46.90.112900
AAAA2a01:4f8:120:62a6::1900
TXT"v=spf1" "-all"900

Checks

  • ✓ TTLs within range #32
    TTLs: A 15m, AAAA 15m, NS 15m. The NS TTL at the parent is 1d and in the zone 15m; 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