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.

13 HTTP Headers from seo.nuWith a configurable User Agent String, referring URL (referer) and cookies


  1. HTTP/1.1 200 OK
  2. Date: Thu, 18 Sep 2025 01:14:04 GMT
  3. Content-Type: text/html; charset=UTF-8
  4. Connection: keep-alive
  5. Server: cloudflare
  6. Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=BrSE4mlt5uiWOWpTUaJwiCP7yncIrKTv%2Bw4Y80xszKMr1aZzL8a9DIWj%2Ffdt3UQrt6zKkIS%2F1wpoW6JB8m22IyeyFG9O8e%2F1fz40taEb37aMdA%3D%3D"}]}
  7. Vary: Accept-Encoding
  8. Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
  9. Age: 12791
  10. X-Cache: HIT
  11. cf-cache-status: DYNAMIC
  12. CF-RAY: 980cfbff9b3cbb73-FRA
  13. alt-svc: h3=":443"; ma=86400

Latest HTTP Headers requests list 30 URLs with HTTP status codes


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