TLD

.dev

938 domains tracked. 23.1% at DMARC enforcement (p=reject or p=quarantine), backed by 217 enforced domains.

Domains tracked
938
938
DMARC enforcement
23.1%
p=reject + p=quarantine
Avg posture score
25.0
of 100
A-grade domains
0
0 A+ · 0 A

Authentication posture

per protocol

DMARC

policy enforcement: 23.1%
reject
13.5%
quarantine
9.6%
none
14.0%
missing
62.9%

SPF

pass rate: 49.8%
0
pass
49.8%
warn
0.7%
fail
49.5%
not found
0.0%

DKIM

pass rate: 23.3%
00
pass
23.3%
warn
0.0%
fail
76.7%
not found
0.0%

MTA-STS

pass rate: 0.3%
0
pass
0.3%
warn
0.2%
fail
99.5%
not found
0.0%

TLS-RPT

pass rate: 0.9%
00
pass
0.9%
warn
0.0%
fail
99.1%
not found
0.0%

BIMI

pass rate: 0.3%
0
pass
0.3%
warn
0.1%
fail
99.6%
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