Our scan on 14 June 2026 found that ostrov.cz routes email through Microsoft 365, a US-based email security provider.
Infrastructure — scan 2026-06-14
IP address
144.126.244.91
ASN
AS14061
· DIGITALOCEAN-ASN - DigitalOcean, LLC US jurisdiction
Email (MX)
Microsoft 365
US
Services (US)
Google Tag Manager
Google reCAPTCHA
Google reCAPTCHA v2
Google AJAX CDN
YouTube Embed
YouTube Link
Services (EU)
None detected
A++ (best)F (worst)
today
Only 3 scans 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 →
Reproduce this scan
dig ostrov.cz MX
dig ostrov.cz A
curl "https://stat.ripe.net/data/prefix-overview/data.json?resource=144.126.244.91"
openssl s_client -connect ostrov.cz:443 -showcerts 2>/dev/null | openssl x509 -noout -issuer
Data sources:
RIPE Stat API (ASN lookup)