SurfaceMap › z › zdb-katalog.de

zdb-katalog.de

Checked 2026-10-22 01:10 UTC · first added 2026-10-21
✗Problems found Score 54 of 100

Domain & DNS

fail

24 passed 1 warn 1 failed

Areas

iRegistration iDelegation ✗Nameservers iSOA !DNSSEC ✓Records

Problems

  • ✗
    Nameservers not responding
    Nameservers · These addresses did not answer, so resolvers waste time on timeouts: ns0.dnb.de (193.175.100.253): read udp 46.225.38.91:40313->193.175.100.253:53: i/o timeout; ns1.dnb.de (193.175.100.254): read udp 46.225.38.91:52130->193.175.100.254:53: i/o timeout.
    #14
  • !
    NSEC3 with extra iterations or salt
    DNSSEC · NSEC3 uses 100 iterations and a 8-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.
    #31

Recent checks

✗

Full report

Domain & DNS report for zdb-katalog.de ›

Mail

fail

2 passed 1 warn 3 failed

Areas

✗SPF ✗DMARC ✗DKIM ✓DNSSEC !MX iBIMI

Problems

  • ✗
    No DMARC record
    DMARC · No DMARC record was found for this domain. DMARC is essential for preventing email spoofing. Add a DMARC record with p=reject or at least p=quarantine.
    #5
  • ✗
    No SPF record
    SPF · No SPF record was found for this domain. SPF is important for preventing email spoofing. Add an SPF record to specify which servers are authorized to send email for your domain.
    #6
  • ✗
    No DKIM keys published
    DKIM · _domainkey.zdb-katalog.de does not exist (NXDOMAIN), so no DKIM keys are published. DKIM helps prevent email spoofing. Configure DKIM with your email service provider.
    #7
  • !
    No MX records
    MX · No MX records found. If this domain is used for email, add MX records to specify mail servers. If it never receives mail, publish a null MX ("MX 0 .").
    #9

Recent checks

✗

Full report

Mail report for zdb-katalog.de ›