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wolterskluwer.nl

Checked 2026-10-22 17:20 UTC · first added 2026-10-21

!Check could not complete

Domain & DNS

error

29 passed 1 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration ✓Delegation ✓Nameservers ✓SOA !DNSSEC iRecords

Problems

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NSEC3 with extra iterations or salt

DNSSEC · NSEC3 uses 16 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

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Full report

Domain & DNS report for wolterskluwer.nl ›

Mail

warn

19 passed 2 warn 0 failed

Areas

✓SPF !DMARC ✓DKIM ✓DNSSEC !MX iBIMI

Problems

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Policy: quarantine

DMARC · DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.

#4
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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

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Full report

Mail report for wolterskluwer.nl ›