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Seznam.cz (Domain) Investigation Report

Generated on Jul 3, 2026

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Overall Summary
Safe
  Why we think so? 

🛡️ Seznam.cz looks like a long-running, highly established Czech internet portal, not a scam site. It has massive traffic, a strong local footprint, valid SSL, WHOIS history dating back to 1996, and matching trademarks/ownership records tied to Seznam.cz, a.s.

The main caution is not the domain itself but abuse around it: users report phishing, fake invoices, and scam emails that impersonate Seznam branding. That is common for popular mail and portal brands. So the domain is best treated as legitimate, but any unexpected email or payment request claiming to be from Seznam should still be verified directly.

Confidence Score Our overall confidence rating for this entity based on public signals, activity, and risk checks.
91%

Risk Insights

🛡️

Legitimate but commonly impersonated

  • Seznam.cz is a real, established Czech portal.
  • Phishing campaigns often borrow the Seznam name and email style.
  • Verify login, invoice, and password-reset emails directly on the site.
✅

Strong identity match

  • WHOIS, DNS, and trademarks line up with Seznam.cz, a.s.
  • The domain age is unusually old for a scam site.
  • Traffic patterns fit a major national service.
⚠️

Watch for brand abuse

  • Public reports mention fake invoices and phishing emails.
  • Some users also report spam from @seznam.cz addresses.
  • Treat unexpected messages as suspicious until verified.

Category Scores

Red Flags & Warnings

  • There are repeated reports of phishing and fake invoices that impersonate Seznam services, so users should not trust unexpected messages just because they mention the brand.
  • Some public complaint sources describe scam or spam emails involving @seznam.cz addresses, which can create confusion for end users.

Detailed Checks & Insights

0-100 Scale

Domain age and registration history

Score: 98
Passed

"Creation date indicates a domain first registered in 1996; this is far more consistent with an established business than a throwaway scam site."

Reason: The domain has a very long registration history and the WHOIS record points to Seznam.cz, a.s.

Ownership and identity match

Score: 97
Passed

"WHOIS owner, DNS namespace, and trademark records point to the same Czech company, which strongly supports authenticity."

Reason: Ownership, trademarks, and branding all align with Seznam.cz, a.s.

Technical trust signals

Score: 93
Passed

"Valid certificate, SPF, MX, and Google verification records are present, and there is no obvious sign of compromised infrastructure."

Reason: The site uses valid SSL, standard DNS, and normal enterprise web technologies.

Reputation and public presence

Score: 90
Passed

"Similarweb shows about 180.6M monthly visits and a Czech top-three country ranking, consistent with a mainstream portal."

Reason: The site has heavy traffic and broad public visibility, which supports legitimacy.

Safety and blacklist checks

Score: 95
Passed

"Crypto scam and Google Safe Browsing checks were clean, which reduces concern about direct malicious activity on the domain."

Reason: No active blacklist or safe-browsing hit was returned for the domain.

Fraud and abuse context

Score: 62
Failed

"This is a real caution signal for users, but it points to brand abuse rather than clear evidence that the core domain itself is a scam."

Reason: There is notable abuse around the brand, especially phishing and fake invoices that impersonate Seznam services.

Your Next Steps

  • 1

    If you receive an email from Seznam.cz, open a new browser tab and log in from the official site instead of using the email link.

  • 2

    Check the sender address carefully for look-alike domains and confirm any invoice or password reset inside your account.

  • 3

    For business mailings to Seznam users, follow SPF, DKIM, DMARC, and complaint-handling best practices to avoid spam filtering.

Key Evidence & Citations

  • Site icon
    WHOIS / DNS / SSL

    ⤷ WHOIS and DNS records show Seznam.cz, a.s. ownership, long domain age, and valid SSL on www.seznam.cz.

  • Site icon
    Traffic and technology profile

    ⤷ Similarweb-style data shows very large monthly traffic, strong Czech audience concentration, and standard enterprise web infrastructure.

  • Site icon
    Trademark registrations

    ⤷ USPTO records show live SEZNAM marks owned by Seznam.cz, a.s., supporting brand legitimacy.

  • Site icon
    Phishing and scam-report context

    ⤷ Public reports focus on phishing, fake invoices, and spam that abuse the Seznam brand, not clear evidence that the core domain is malicious.

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