lehmanns.de

Checked 21 October 2026, 23:11 UTC · via 8.8.8.8
!Passed with warnings
22 passed 4 warnings 0 failed 3 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

dns.lehmanns.de, dns2.lehmanns.de, ns1.de.colt.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dns.lehmanns.de, dns2.lehmanns.de, ns1.de.colt.net
NS in the zone
dns.lehmanns.de, dns2.lehmanns.de, ns1.de.colt.net
NameserverAddressesNetwork (AS)Glue
dns.lehmanns.de213.61.119.250AS8220 COLT - COLT Technology Services Group Limited, GB213.61.119.250
dns2.lehmanns.de93.92.130.173AS29014 SCALEUP - ScaleUp Technologies GmbH & Co. KG, DE217.9.63.71
ns1.de.colt.net212.74.77.55AS8220 COLT - COLT Technology Services Group Limited, GB-

Checks

  • ✓ 3 nameservers #6
    Delegated to dns.lehmanns.de, dns2.lehmanns.de, ns1.de.colt.net.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: dns2.lehmanns.de (glue 217.9.63.71, zone 93.92.130.173). Update the glue at your registrar.
    #8
  • ✓ 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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS29014 (SCALEUP - ScaleUp Technologies GmbH & Co. KG, DE): 1 address; AS8220 (COLT - COLT Technology Services Group Limited, GB): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

info

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns.lehmanns.de 213.61.119.250NOERROR, 81 ms, authoritativenoyes / yesrefusedBIND
dns2.lehmanns.de 93.92.130.173NOERROR, 18 ms, authoritativenoyes / yesrefusedBIND
ns1.de.colt.net 212.74.77.55NOERROR, 16 ms, authoritativenoyes / yesrefusedColt

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: dns.lehmanns.de: "BIND"; dns2.lehmanns.de: "BIND"; ns1.de.colt.net: "Colt".
    #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 2014121498 · primary dns.lehmanns.de

Found

Primary (MNAME)
dns.lehmanns.de
Contact (RNAME)
asche.lehmanns.de
Serial
2014121498
Refresh / retry
10800 s / 3600 s
Expire
1209600 s
Negative TTL
64800 s

Serial per nameserver

NameserverSerial
dns.lehmanns.de (213.61.119.250)2014121498
dns2.lehmanns.de (93.92.130.173)2014121498
ns1.de.colt.net (212.74.77.55)2014121498

Checks

  • ✓ Serial 2014121498 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 14d, negative TTL 18h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns.lehmanns.de is one of the listed nameservers.
  • ✓ Contact asche@lehmanns.de #25
    The SOA RNAME asche.lehmanns.de means asche@lehmanns.de.
  • ✓ Date-based serial #26
    The serial 2014121498 follows the YYYYMMDDnn convention (2014-12-14).

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

warn

11 records at the apex

Found

Read from
213.61.119.250:53
TypeValueTTL
SOAdns.lehmanns.de. asche.lehmanns.de. 2014121498 10800 3600 1209600 6480060
NSdns.lehmanns.de.60
NSns1.de.colt.net.60
NSdns2.lehmanns.de.60
A89.246.237.4260
MX10 mx1.lehmanns.de.60
MX10 mx2.lehmanns.de.60
TXT"MS=ms34775785"60
TXT"v=spf1 a mx ip4:93.92.130.168 ip4:217.9.63.64/27 ip4:93.92.130.160/27 ip4:213.61.119.248/29 ip4:217.110.40.192/27 ip4:217.69.242.213 ip4:212.122.46.34 ip4:212.122.46.221 include:spf.protection.outlook.com include:de._netblocks.mimecast.com -all"60
CAA0 issuewild "digicert.com"60
CAA0 issue "Digicert.com"60

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), MX (1m), NS (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 1m; resolvers may use either.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: digicert.com, Digicert.com.