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.

12 HTTP Headers from http://marketupdate.nl/begrippenlijst/With a configurable User Agent String, referring URL (referer) and cookies


  1. HTTP/1.1 301 Moved Permanently
  2. Date: Sat, 05 Jul 2025 14:07:24 GMT
  3. Connection: keep-alive
  4. Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
  5. Server: cloudflare
  6. Location: https://marketupdate.nl/begrippenlijst/
  7. X-Powered-By: PleskLin
  8. X-Turbo-Charged-By: LiteSpeed
  9. Cf-Cache-Status: DYNAMIC
  10. Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=W4CQBha57Vm4LnKHyCS15SXTCCEtZzclyt9I4AdnXlcUNfNGzP%2F%2FuzgqP0ZF0lE9XfjrN1PN0ZjLMAFqgqZo7XD1AHv4nFmMslWeCLcKUFU5wst2D3mHtfU%3D"}]}
  11. CF-RAY: 95a76db1fca26913-FRA
  12. alt-svc: h3=":443"; ma=86400

Latest HTTP Headers requests list 30 URLs with HTTP status codes


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