TLD

.com

257,073 domains tracked. 24.4% at DMARC enforcement (p=reject or p=quarantine), backed by 62,852 enforced domains.

Domains tracked
257K+
257,073
DMARC enforcement
24.4%
p=reject + p=quarantine
Avg posture score
34.5
of 100
A-grade domains
993
48 A+ · 945 A

Authentication posture

per protocol

DMARC

policy enforcement: 24.4%
reject
12.7%
quarantine
11.7%
none
25.1%
missing
50.4%

SPF

pass rate: 63.5%
0
pass
63.5%
warn
1.5%
fail
35.1%
not found
0.0%

DKIM

pass rate: 43.1%
00
pass
43.1%
warn
0.0%
fail
56.8%
not found
0.0%

MTA-STS

pass rate: 0.5%
0
pass
0.5%
warn
0.4%
fail
99.1%
not found
0.0%

TLS-RPT

pass rate: 1.1%
0
pass
1.1%
warn
0.1%
fail
98.9%
not found
0.0%

BIMI

pass rate: 1.1%
0
pass
1.1%
warn
0.2%
fail
98.7%
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