Our scan on 4 June 2026 found that oacl.cz routes email through Microsoft 365, a US-based email security provider.
Infrastructure — scan 2026-06-04
IP address
213.180.34.154
ASN
AS16246
· AS16246 O2 Czech Republic, a.s. Unknown
SSL issuer
YR1
Email (MX)
Microsoft 365
US
Services (US)
Microsoft 365
Services (EU)
None detected
HTML fetch
ok
Grade history
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today
Only 1 scan on record.
History builds daily — check back tomorrow.
Change log
No changes detected yet. Monitoring daily.
Methodology note: This report reflects a point-in-time automated scan of
public infrastructure data — DNS MX records, ASN routing via RIPE Stat API, SSL certificate
issuer, and HTML pattern matching against known service signatures. It is not a legal
determination of GDPR compliance or any regulatory obligation. Infrastructure can change at
any time; the grade reflects configuration at scan timestamp only. Scan data is reproducible.
View full methodology →