3W1 SEO Tools

Make your WWW the #1 with SEO!

  1. SEO Analysis
  2. Predicted PageRank
  3. PageRank Button
  4. Check PageRank
  5. WHOIS
  6. HTTP Headers 

3W1 strongly recommends „White Hat SEO” – learn why it's good for your website, while „Black Hat SEO” is not.

11 HTTP Headers from marketupdate.nlWith a configurable User Agent String, referring URL (referer) and cookies


  1. HTTP/1.1 301 Moved Permanently
  2. Date: Tue, 30 Dec 2025 14:31:52 GMT
  3. Content-Type: text/html
  4. Connection: keep-alive
  5. Server: cloudflare
  6. Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
  7. Location: https://marketupdate.nl/
  8. cf-cache-status: DYNAMIC
  9. Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=VQHVw42yAdne84O8MW8KMPQtstUVjQmyiqMslPFekXwucBQARprw07m0Ygnooca%2Fmi9aR2RYjRNb7lLeziniOAlEWvfRhsVoceIQeG2YVFzA9p%2BCKk5wOawJLg%3D%3D"}]}
  10. CF-RAY: 9b623e472afaae0b-FRA
  11. alt-svc: h3=":443"; ma=86400

Latest HTTP Headers requests list 30 URLs with HTTP status codes


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