TLD

.org.uk

899 domains tracked. 38.7% at DMARC enforcement (p=reject or p=quarantine), backed by 348 enforced domains.

Domains tracked
899
899
DMARC enforcement
38.7%
p=reject + p=quarantine
Avg posture score
51.6
of 100
A-grade domains
49
1 A+ · 48 A

Authentication posture

per protocol

DMARC

policy enforcement: 38.7%
reject
18.2%
quarantine
20.5%
none
34.3%
missing
27.0%

SPF

pass rate: 85.1%
0
pass
85.1%
warn
0.4%
fail
14.5%
not found
0.0%

DKIM

pass rate: 70.3%
00
pass
70.3%
warn
0.0%
fail
29.7%
not found
0.0%

MTA-STS

pass rate: 6.2%
0
pass
6.2%
warn
1.4%
fail
92.3%
not found
0.0%

TLS-RPT

pass rate: 10.0%
0
pass
10.0%
warn
0.1%
fail
89.9%
not found
0.0%

BIMI

pass rate: 0.3%
00
pass
0.3%
warn
0.0%
fail
99.7%
not found
0.0%

No top performers available yet. The leaderboard refreshes nightly.

How this is measured

Each tracked domain is scanned for SPF, DKIM, DMARC, MTA-STS, TLS-RPT, and BIMI. Result statuses (pass / fail / warn / not-found) and DMARC policy values are aggregated into this page nightly. The top performers list is capped at 20. The full corpus is much larger and is not enumerated publicly.

Data provenance

  • Scanner — Authex Labs public scanner (DNS, RFC-compliant)
  • Refreshed — daily at 04:05 UTC
  • Last seen — 8 May 2026