handwerk-magazin.de

Checked 21 October 2026, 22:42 UTC · via 8.8.8.8
✗Problems found
21 passed 2 warnings 1 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

ns.holzmannverlag.de, pns.dtag.de, secondary006.dtag.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.holzmannverlag.de, pns.dtag.de, secondary006.dtag.net
NS in the zone
ns.holzmannverlag.de, pns.dtag.de, secondary006.dtag.net
NameserverAddressesNetwork (AS)Glue
ns.holzmannverlag.de213.179.147.68AS8767 MNET-AS - M-net Telekommunikations GmbH, DE213.179.147.68
pns.dtag.de194.25.0.125 2003:40:8000::100AS3320 DTAG - Deutsche Telekom AG, DE AS3320 DTAG - Deutsche Telekom AG, DE194.25.0.125 2003:40:8000::100
secondary006.dtag.net195.244.245.25 2a00:fa8:3:0:100:0:6:1AS5605 NETUSE - NetUSE AG, DE AS5605 NETUSE - NetUSE AG, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.holzmannverlag.de, pns.dtag.de, secondary006.dtag.net.
  • ✓ 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 2 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS3320 (DTAG - Deutsche Telekom AG, DE): 2 addresses; AS5605 (NETUSE - NetUSE AG, DE): 2 addresses; AS8767 (MNET-AS - M-net Telekommunikations GmbH, DE): 1 address.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns.holzmannverlag.de.
    #13

Nameservers

fail

4 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.holzmannverlag.de 213.179.147.68no responsenono / no--
pns.dtag.de 194.25.0.125NOERROR, 11 ms, authoritativenoyes / yesrefusedDomainNameServer
pns.dtag.de 2003:40:8000::100NOERROR, 7 ms, authoritativenoyes / yesrefusedDomainNameServer
secondary006.dtag.net 195.244.245.25NOERROR, 12 ms, authoritativenoyes / yesrefusedDomainNameServer
secondary006.dtag.net 2a00:fa8:3:0:100:0:6:1NOERROR, 17 ms, authoritativenoyes / yesrefusedDomainNameServer

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: ns.holzmannverlag.de (213.179.147.68): read udp 46.225.38.91:36911->213.179.147.68:53: 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: pns.dtag.de: "DomainNameServer"; secondary006.dtag.net: "DomainNameServer".
    #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

warn

serial 2001051194 · primary ns.holzmannverlag.de

Found

Primary (MNAME)
ns.holzmannverlag.de
Contact (RNAME)
admin.holzmannverlag.de
Serial
2001051194
Refresh / retry
43200 s / 3600 s
Expire
2592000 s
Negative TTL
259200 s

Serial per nameserver

NameserverSerial
pns.dtag.de (194.25.0.125)2001051194
pns.dtag.de (2003:40:8000::100)2001051194
secondary006.dtag.net (195.244.245.25)2001051194
secondary006.dtag.net (2a00:fa8:3:0:100:0:6:1)2001051194

Checks

  • ✓ Serial 2001051194 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 3d is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 12h, retry 1h, expire 30d, negative TTL 3d.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.holzmannverlag.de is one of the listed nameservers.
  • ✓ Contact admin@holzmannverlag.de #25
    The SOA RNAME admin.holzmannverlag.de means admin@holzmannverlag.de.
  • ✓ Date-based serial #26
    The serial 2001051194 follows the YYYYMMDDnn convention (2001-05-11).

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

11 records at the apex

Found

Read from
194.25.0.125:53
TypeValueTTL
SOAns.holzmannverlag.de. admin.holzmannverlag.de. 2001051194 43200 3600 2592000 2592003600
NSpns.dtag.de.259200
NSns.holzmannverlag.de.259200
NSsecondary006.dtag.net.259200
A85.215.63.205600
MX10 smtp2.holzmannverlag.de.259200
MX20 smtp3.holzmannverlag.de.259200
TXT"MS=ms89631922"259200
TXT"facebook-domain-verification=s843mob6g363zxj4ydn6k9lrzsjij9"259200
TXT"v=spf1 a ip4:195.140.184.0/22 ip4:91.192.40.0/22 ip4:212.227.68.71/24 ip4:213.179.147.0/25 ip4:91.184.37.104/29 ip4:188.93.11.199/32 ip4:109.71.74.240/32 include:inxserver.com include:spf.protection.outlook.com include:amazonses.com -all"259200
TXT"google-site-verification=oyS_FqqQSbNzM9SRHmdYhG3h8DH2VRuBm2kRr0A3Hfw"259200

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 3d, NS 3d. The NS TTL at the parent is 1d and in the zone 3d; 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