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nielsen.com

Checked 2026-10-22 10:03 UTC · first added 2026-10-21

✗Problems found Score 75 of 100

Domain & DNS

warn

23 passed 2 warn 0 failed

Areas

iRegistration !Delegation iNameservers ✓SOA !DNSSEC iRecords

Problems

!

NS sets differ

Delegation · The nameservers at the parent and in the zone should be the same. Only at the parent: udns1.ultradns.net, udns2.ultradns.net; only in the zone: pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk. pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk, udns1.ultradns.net, udns2.ultradns.net report NS pdns1.ultradns.net pdns2.ultradns.net pdns3.ultradns.org pdns4.ultradns.org pdns5.ultradns.info pdns6.ultradns.co.uk.

#7
!

Not signed

DNSSEC · 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

Recent checks

!

Full report

Domain & DNS report for nielsen.com ›

Mail

fail

26 passed 3 warn 1 failed

Areas

iSPF !DMARC !DKIM !DNSSEC ✓MX ✗TLS iBIMI

Problems

✗

Policy not reachable

TLS · The MTA-STS record exists but the policy could not be fetched, so senders ignore MTA-STS: Get "https://mta-sts.nielsen.com/.well-known/mta-sts.txt": tls: failed to verify certificate: x509: certificate is valid for dashboard-gateway.ailead.app, not mta-sts.nielsen.com.

#33
!

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
!

Not enabled

DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

#8
!

1024-bit DKIM key

DKIM · 1024-bit RSA keys are the minimum and are considered weak today: s2 (1024 bits). Rotate to a 2048-bit key.

#23

Recent checks

✗

Full report

Mail report for nielsen.com ›