noerdlingen.de

Checked 21 October 2026, 23:40 UTC · via 8.8.8.8
!Passed with warnings
21 passed 1 warning 0 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

info

dns1.netcom-dns.de, dns2.netcom-dns.de, dns3.netcom-dns.de, dns4.netcom-dns.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns1.netcom-dns.de, dns2.netcom-dns.de, dns3.netcom-dns.de, dns4.netcom-dns.de
NS in the zone
dns1.netcom-dns.de, dns2.netcom-dns.de, dns3.netcom-dns.de, dns4.netcom-dns.de
NameserverAddressesNetwork (AS)Glue
dns1.netcom-dns.de185.136.96.163 2a06:fb00:1::1:163AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG185.136.96.163 2a06:fb00:1::1:163
dns2.netcom-dns.de185.136.97.163 2a06:fb00:1::2:163AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG185.136.97.163 2a06:fb00:1::2:163
dns3.netcom-dns.de185.136.98.163 2a06:fb00:1::3:163AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG185.136.98.163 2a06:fb00:1::3:163
dns4.netcom-dns.de185.136.99.163 2a06:fb00:1::4:163AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG185.136.99.163 2a06:fb00:1::4:163

Checks

  • ✓ 4 nameservers #6
    Delegated to dns1.netcom-dns.de, dns2.netcom-dns.de, dns3.netcom-dns.de, dns4.netcom-dns.de.
  • ✓ 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.
  • i
    One address family in one network
    all IPv6 addresses are in 2a06:fb00:1::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS203391 (CLOUDNSNET - Cloud DNS Ltd, BG): 8 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.netcom-dns.de 185.136.96.163NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2
dns1.netcom-dns.de 2a06:fb00:1::1:163NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-2
dns2.netcom-dns.de 185.136.97.163NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2
dns2.netcom-dns.de 2a06:fb00:1::2:163NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2
dns3.netcom-dns.de 185.136.98.163NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2
dns3.netcom-dns.de 2a06:fb00:1::3:163NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2
dns4.netcom-dns.de 185.136.99.163NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2
dns4.netcom-dns.de 2a06:fb00:1::4:163NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-2

Checks

  • ✓ All respond #14
    All 8 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: dns1.netcom-dns.de: "de3-2"; dns2.netcom-dns.de: "de3-2"; dns3.netcom-dns.de: "de3-2"; dns4.netcom-dns.de: "de3-2".
    #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 2026090201 · primary dns1.netcom-dns.de

Found

Primary (MNAME)
dns1.netcom-dns.de
Contact (RNAME)
server.netcom-bw.de
Serial
2026090201
Refresh / retry
10800 s / 3600 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
dns1.netcom-dns.de (185.136.96.163)2026090201
dns1.netcom-dns.de (2a06:fb00:1::1:163)2026090201
dns2.netcom-dns.de (185.136.97.163)2026090201
dns2.netcom-dns.de (2a06:fb00:1::2:163)2026090201
dns3.netcom-dns.de (185.136.98.163)2026090201
dns3.netcom-dns.de (2a06:fb00:1::3:163)2026090201
dns4.netcom-dns.de (185.136.99.163)2026090201
dns4.netcom-dns.de (2a06:fb00:1::4:163)2026090201

Checks

  • ✓ Serial 2026090201 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 28d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.netcom-dns.de is one of the listed nameservers.
  • ✓ Contact server@netcom-bw.de #25
    The SOA RNAME server.netcom-bw.de means server@netcom-bw.de.
  • ✓ Date-based serial #26
    The serial 2026090201 follows the YYYYMMDDnn convention (2026-09-02).

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

13 records at the apex

Found

Read from
185.136.96.163:53
TypeValueTTL
SOAdns1.netcom-dns.de. server.netcom-bw.de. 2026090201 10800 3600 2419200 900900
NSdns1.netcom-dns.de.3600
NSdns3.netcom-dns.de.3600
NSdns4.netcom-dns.de.3600
NSdns2.netcom-dns.de.3600
A153.92.207.2101800
MX10 mail.noerdlingen.de.1800
MX20 mail2.noerdlingen.de.1800
TXT"sophos-domain-verification=f1d2e0b663ec145d42f94edec18dc8d745549f4c156571b991770afac6475b4e"1800
TXT"google-site-verification=_fJyIvqP1Wo2mnpHlpphBm8b-OZPR2GoLrvZ9cYfpks"1800
TXT"MS=8111149CF394339153E6005BB7DB3D07F857DA54"1800
TXT"v=spf1 a mx ip4:62.152.170.195 ip4:91.151.20.24 include:agenturserver.de a:vhs.noerdlingen.de include:indivsurvey.de -all"1800
TXT"apple-domain-verification=UFWxq7JY7Ea4AG8t"1800

Checks

  • ✓ TTLs within range #32
    TTLs: A 30m, MX 30m, 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