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web4u.cz

Czech Republic · Cloudflare Radar rank #30018 (CZ) · last scanned 2026-05-31 · Visit the live site ↗

Total score 1.00 / 1.00

Web hosting

1.0

Hosted in the EU by an EU provider (Web4U s.r.o.)

Hostname: web4u.cz
IP address: 81.91.86.19
Country: Czechia
ASN: Web4U s.r.o.
Server software: openresty

Show raw HTTP headers ↓

Server: openresty
Date: Sun, 31 May 2026 18:05:44 GMT
Content-Type: text/html; charset=iso-8859-1
Connection: keep-alive
Location: https://www.web4u.cz/
Strict-Transport-Security: max-age=31536000

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Last scanned: 2026-05-31 20:05:44 UTC

Mail hosting

1.0

Hosted in the EU by an EU provider (Web4U s.r.o.)

MX hostname: mx.web4u.cz
IP address: 81.91.87.12
Country: Czechia
ASN: Web4U s.r.o.

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Last scanned: 2026-06-04 17:54:10 UTC

DNS

1.0

DNS is managed by an EU provider (ns.web4u.cz)

Primary nameserver: ns.web4u.cz
Country: CZ
ASN: Web4U s.r.o.

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Search this ASN on bgp.he.net ↗
Run a DNS lookup on this host (ns.web4u.cz) ↗
To verify yourself, run: dig +short ns.web4u.cz, then look up the IP on bgp.he.net.

Last scanned: 2026-05-31 20:05:49 UTC

Score values: 1.0 = sovereign (EU-hosted, EU provider). 0.0 = non-sovereign (outside the EU, or on a non-EU-controlled provider — US, UK, etc. — regardless of where the datacenter sits). N/A = the sub-score couldn't be measured (no MX record, unresolvable host, etc.) and is excluded from the total.