tvo.de

Checked 22 October 2026, 00:41 UTC · via 8.8.8.8
!Passed with warnings
22 passed 1 warning 0 failed 6 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

b.ns14.net, ns1.hochfranken-online.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
b.ns14.net, ns1.hochfranken-online.de
NS in the zone
b.ns14.net, ns1.hochfranken-online.de
NameserverAddressesNetwork (AS)Glue
b.ns14.net217.160.81.160 2001:8d8:fe:53:217:160:81:160AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-
ns1.hochfranken-online.de213.167.167.1AS20805 HFONETZ - Gamma Holding GmbH, DE213.167.167.1

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: b.ns14.net, ns1.hochfranken-online.de.
    #6
  • ✓ 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 2 IPv4 /24s and 1 IPv6 /48.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20805 (HFONETZ - Gamma Holding GmbH, DE): 1 address; AS8560 (IONOS-AS - IONOS SE, 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: ns1.hochfranken-online.de.
    #13

Nameservers

info

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
b.ns14.net 217.160.81.160NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
b.ns14.net 2001:8d8:fe:53:217:160:81:160NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1.hochfranken-online.de 213.167.167.1NOERROR, 6 ms, authoritativenoyes / yesrefusedNo version info available (refused).

Checks

  • ✓ All respond #14
    All 3 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: b.ns14.net: "Served by PowerDNS - https://www.powerdns.com/"; ns1.hochfranken-online.de: "No version info available (refused).".
    #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 2020060501 · primary ns1.hochfranken-online.de

Found

Primary (MNAME)
ns1.hochfranken-online.de
Contact (RNAME)
dns-admin.hochfranken-online.de
Serial
2020060501
Refresh / retry
86400 s / 3600 s
Expire
864000 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
b.ns14.net (217.160.81.160)2020060501
b.ns14.net (2001:8d8:fe:53:217:160:81:160)2020060501
ns1.hochfranken-online.de (213.167.167.1)2020060501

Checks

  • ✓ Serial 2020060501 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 1h, expire 10d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.hochfranken-online.de is one of the listed nameservers.
  • ✓ Contact dns-admin@hochfranken-online.de #25
    The SOA RNAME dns-admin.hochfranken-online.de means dns-admin@hochfranken-online.de.
  • ✓ Date-based serial #26
    The serial 2020060501 follows the YYYYMMDDnn convention (2020-06-05).

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
217.160.81.160:53
TypeValueTTL
SOAns1.hochfranken-online.de. dns-admin.hochfranken-online.de. 2020060501 86400 3600 864000 864003600
NSb.ns14.net.3600
NSns1.hochfranken-online.de.3600
A116.203.228.943600
AAAA2a01:4f8:c0c:e734::23600
MX0 tvo-de.mail.protection.outlook.com.3600
TXT"v=spf1 include:spf.protection.outlook.com -all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1h, 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