The header defines a generic reporting framework which allows web developers to associate a set of named reporting endpoints with an origin. Various platform features (like Content Security Policy, Network Error Reporting, and others) may use these endpoints to deliver feature-specific reports in a consistent manner.

Reference...

We have seen 399 websites setting the Report-To HTTP header and 292 unique values of this header.

  • www.bbc.co.uk {"group":"default","max_age":2592000,"endpoints":[{"url":"https://europe-west1-bbc-otg-traf-mgr-bq-prod-4591.cloudfunctions.net/report-endpoint","priority":1}],"include_subdomains":true}
  • www.bbc.com {"group":"default","max_age":2592000,"endpoints":[{"url":"https://europe-west1-bbc-otg-traf-mgr-bq-prod-4591.cloudfunctions.net/report-endpoint","priority":1}],"include_subdomains":true}
  • www.linkedin.com {"group":"network-errors","max_age":2592000,"endpoints":[{"url":"https://www.linkedin.com/li/rep"}],"include_subdomains":true}
  • rawgit.com {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=21&lkg-time=1602099870"}],"group":"cf-nel","max_age":604800}
  • cdnjs.cloudflare.com {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=21&lkg-time=1601992610"}],"group":"cf-nel","max_age":604800}
  • padlet.com {"group":"default","max_age":86400,"endpoints":[{"url":"https://3bf49266ec2773dbb3c965ca2bd2fae3.report-uri.com/a/d/g"}],"include_subdomains":true}
  • www.msn.com {"group":"network-errors","max_age":604800,"endpoints":[{"url":"https://deff.nelreports.net/api/report?cat=msn"}]}
  • www.bing.com {"group":"network-errors","max_age":604800,"endpoints":[{"url":"https://aefd.nelreports.net/api/report?cat=bingth"}]}
  • mnogochat.com {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=21&lkg-time=1602148381"}],"group":"cf-nel","max_age":604800}
  • cdn.shopify.com {"group":"network-errors","max_age":0}
  • mahimeta.com {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=h5txW2aircw7tfsXHi9hQsIGnu7e%2FWdJcmB7f1x7RND%2ByHCyKOnrTYncE9TnBeA6LnQ70SeOJU5iS3k6L7hopbT1g1YjLdHbs4pastA%3D"}],"group":"cf-nel","max_age":604800}
  • openmu.com {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=21&lkg-time=1602104762"}],"group":"cf-nel","max_age":604800}
  • ak47full.com {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=21&lkg-time=1602149636"}],"group":"cf-nel","max_age":604800}
  • nohowstyle.com {"group":"network-errors","max_age":2592000,"endpoints":[{"url":"https://monorail-edge.shopifycloud.com/v1/reports/nel/20190325/shopify"}]}
  • scotthelme.co.uk {"group":"default","max_age":10886400,"endpoints":[{"url":"https://scotthelme.report-uri.com/a/d/g"}],"include_subdomains":true}
  • webcookies.org { "group": "csp", "max_age": 10886400, "endpoints": [ { "url": "https://reports.krvtz.net/csp" } ] }, { "group": "hpkp", "max_age": 10886400, "endpoints": [ { "url": "http://reports.krvtz.net/hpkp" } ] }, { "group": "nel", "max_age": 10886400, "endpoints": [ { "url": "http://reports.krvtz.net/nel" } ] }
  • www.heliosnet.com {"group":"default","max_age":31536000,"endpoints":[{"url":"https://heliosnet.report-uri.com/a/d/g"}],"include_subdomains":true}
  • bilbaoexhibitioncentre.com {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=21&lkg-time=1601995372"}],"group":"cf-nel","max_age":604800}
  • rsms.me {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=21&lkg-time=1602062896"}],"group":"cf-nel","max_age":604800}
  • platform.linkedin.com {"group":"network-errors","max_age":2592000,"endpoints":[{"url":"https://www.linkedin.com/li/rep"}],"include_subdomains":true}
  • ajax.cloudflare.com {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=21&lkg-time=1602146189"}],"group":"cf-nel","max_age":604800}
  • an.yandex.ru { "group": "network-errors", "max_age": 86400, "endpoints": [ { "url": "https://dr.yandex.net/nel"}]}
  • guardian.com.my {"group":"webscaleCspEndpoint","max-age":10886400,"endpoints":[{"url":"https://xdymhcopnh.execute-api.us-east-1.amazonaws.com/default/cspReportingMonitor"}]}
  • www.mainadv.com {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=21&lkg-time=1602149652"}],"group":"cf-nel","max_age":604800}
  • www.chaturbate.com {"group":"default","max_age":2592000,"endpoints":[{"url":"https://report-uri.highwebmedia.com/a/t/g"}],"include_subdomains":true}