tuev-sued.de

Checked 22 October 2026, 00:41 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

ns.tuevsued.de, ns2.tuevsued.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.tuevsued.de, ns2.tuevsued.de, pns.dtag.de, secondary006.dtag.net
NS in the zone
ns.tuevsued.de, ns2.tuevsued.de, pns.dtag.de, secondary006.dtag.net
NameserverAddressesNetwork (AS)Glue
ns.tuevsued.de193.30.192.66AS3320 DTAG - Deutsche Telekom AG, DE193.30.192.66
ns2.tuevsued.de193.30.192.96AS3320 DTAG - Deutsche Telekom AG, DE193.30.192.96
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

  • ✓ 4 nameservers #6
    Delegated to ns.tuevsued.de, ns2.tuevsued.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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS3320 (DTAG - Deutsche Telekom AG, DE): 4 addresses; AS5605 (NETUSE - NetUSE AG, DE): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns.tuevsued.de, ns2.tuevsued.de.
    #13

Nameservers

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.tuevsued.de 193.30.192.66NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2.tuevsued.de 193.30.192.96NOERROR, 4 ms, authoritativenoyes / yesrefused-
pns.dtag.de 194.25.0.125NOERROR, 10 ms, authoritativenoyes / yesrefusedDomainNameServer
pns.dtag.de 2003:40:8000::100NOERROR, 8 ms, authoritativenoyes / yesrefusedDomainNameServer
secondary006.dtag.net 195.244.245.25NOERROR, 15 ms, authoritativenoyes / yesrefusedDomainNameServer
secondary006.dtag.net 2a00:fa8:3:0:100:0:6:1NOERROR, 17 ms, authoritativenoyes / yesrefusedDomainNameServer

Checks

  • ✓ All respond #14
    All 6 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: 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

pass

serial 2020051635 · primary ns.tuevsued.de

Found

Primary (MNAME)
ns.tuevsued.de
Contact (RNAME)
hostmaster.tuevsued.de
Serial
2020051635
Refresh / retry
3600 s / 600 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns.tuevsued.de (193.30.192.66)2020051635
ns2.tuevsued.de (193.30.192.96)2020051635
pns.dtag.de (194.25.0.125)2020051635
pns.dtag.de (2003:40:8000::100)2020051635
secondary006.dtag.net (195.244.245.25)2020051635
secondary006.dtag.net (2a00:fa8:3:0:100:0:6:1)2020051635

Checks

  • ✓ Serial 2020051635 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 10m, expire 14d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.tuevsued.de is one of the listed nameservers.
  • ✓ Contact hostmaster@tuevsued.de #25
    The SOA RNAME hostmaster.tuevsued.de means hostmaster@tuevsued.de.
  • ✓ Date-based serial #26
    The serial 2020051635 follows the YYYYMMDDnn convention (2020-05-16).

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

19 records at the apex

Found

Read from
193.30.192.66:53
TypeValueTTL
SOAns.tuevsued.de. hostmaster.tuevsued.de. 2020051635 3600 600 1209600 30086400
NSns.tuevsued.de.300
NSpns.dtag.de.300
NSsecondary006.dtag.net.300
NSns2.tuevsued.de.300
A193.30.192.26300
MX10 tuevsued-de01b.mail.protection.outlook.com.3600
TXT"D-TRUST=HI3LY8G3YMV3A42F7USZGCZ"300
TXT"adobe-idp-site-verification=611e43df38778310d0b41356a5b99105531093452d1df52b7e959f9397cf9865"300
TXT"j6Xoa6Xr876/jFs+I7aVYN2+Pgkf2KZKuCcxhVWfvRg="300
TXT"MS=ms29416389"300
TXT"XGhPhqA7V1jqk62gmqzGkZ82b+0pPPNM6GmH98NYKuuroQ2Wu+lvtjer64jF/xW3XK6ADnPtZ0EDBBHnyVSRqA=="300
TXT"v=spf1 ip4:193.30.192.0/24 include:spf.protection.outlook.com -all"14400
TXT"QuoVadis=e4d4d11f-0015-43d8-80e3-169609a69f5f"300
TXT"D-TRUST=YGGVY9HKX6DAW8OOX37HPN5"300
TXT"apple-domain-verification=SBtWPlm6KiTBbPVy"300
TXT"google-site-verification=cjnrn4sLOLUztGucHXgPhm-f0iKVK4MciQpN1P_J7pA"300
TXT"D-TRUST=CN3MZRCF8HFTPPYYG8YUGF6"300
TXT"D-TRUST=N4FBR46PF29BF75XP6MXM3B"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, NS 5m. The NS TTL at the parent is 1d and in the zone 5m; 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