achema.de

Checked 21 October 2026, 21:27 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 warnings 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

warn

ns1.webdiscount.net, ns2.webdiscount.net, ns3.webdiscount.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.webdiscount.net, ns2.webdiscount.net, ns3.webdiscount.net
NS in the zone
ns1.webdiscount.net, ns2.webdiscount.net, ns3.webdiscount.net
NameserverAddressesNetwork (AS)Glue
ns1.webdiscount.net80.244.208.246AS24637 WEBDISCOUNT - WEBDISCOUNT GmbH & Co. KG, DE-
ns2.webdiscount.net80.244.210.246AS24637 WEBDISCOUNT - WEBDISCOUNT GmbH & Co. KG, DE-
ns3.webdiscount.net80.244.209.246AS24637 WEBDISCOUNT - WEBDISCOUNT GmbH & Co. KG, DE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.webdiscount.net, ns2.webdiscount.net, ns3.webdiscount.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 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS24637 (WEBDISCOUNT - WEBDISCOUNT GmbH & Co. KG, DE): 3 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 .net
    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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.webdiscount.net 80.244.208.246NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns2.webdiscount.net 80.244.210.246NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns3.webdiscount.net 80.244.209.246NOERROR, 4 ms, authoritativenoyes / yesrefused-

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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 116 · primary ns1.webdiscount.net

Found

Primary (MNAME)
ns1.webdiscount.net
Contact (RNAME)
hostmaster.webdiscount.net
Serial
116
Refresh / retry
900 s / 600 s
Expire
86400 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.webdiscount.net (80.244.208.246)116
ns2.webdiscount.net (80.244.210.246)116
ns3.webdiscount.net (80.244.209.246)116

Checks

  • ✓ Serial 116 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d; expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 15m, retry 10m, expire 1d, negative TTL 1h.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.webdiscount.net is one of the listed nameservers.
  • ✓ Contact hostmaster@webdiscount.net #25
    The SOA RNAME hostmaster.webdiscount.net means hostmaster@webdiscount.net.
  • ✓ Counter serial #26
    The serial 116 is a plain counter.

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

9 records at the apex

Found

Read from
80.244.208.246:53
TypeValueTTL
SOAns1.webdiscount.net. hostmaster.webdiscount.net. 116 900 600 86400 36001209600
NSns2.webdiscount.net.3600
NSns3.webdiscount.net.3600
NSns1.webdiscount.net.3600
A144.76.184.113600
MX0 achema-de.mail.protection.outlook.com.3600
TXT"v=spf1 mx ip4:144.76.184.11 ip4:49.12.125.85 ip4:49.12.125.86 include:spf.protection.outlook.com include:amazonses.com ~all"3600
TXT"MS=ms39956904"3600
TXT"facebook-domain-verification=dn349cp3ccb8sb2yvdbzjima3vgw04"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 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