Top 10k sites	1,533 websites
Top 100k sites	11,118 websites
Top 1m sites	99,291 websites

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Header value	Value prevalence
{"group":"network-errors","max_age":2592000,"endpoints":[{"url":"https://monorail-edge.shopifysvc.com/v1/reports/nel/20190325/shopify"}]}	13.19%
{ "group": "wm_nel", "max_age": 86400, "endpoints": [{ "url": "https://intake-logging.wikimedia.org/v1/events?stream=w3c.reportingapi.network_error&schema_uri=/w3c/reportingapi/network_error/1.0.0" }] }	0.12%
{"group":"GeoMerchantPrestoSiteUi","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/GeoMerchantPrestoSiteUi/external"}]}	0.07%
{"group": "network-errors", "max_age": 600, "endpoints": [ { "url": "https://dr.yandex.net/s3_nel"}]}	0.05%
{"max_age":31557600,"include_subdomains":true,"endpoints":[{"url":"https://reporting-api.gannettinnovation.com"}]}	0.04%
{"group": "default", "max_age": 86400, "endpoints": [{"url": "https://live-reports.autistici.org/ingest/v1"}]}	0.02%
{"group":"default","max_age":2592000,"endpoints":[{"url":"https://report-uri.mmcdn.com/a/t/g"}],"include_subdomains":true}	0.02%
{"group":"report-endpoint","max_age":10886400,"endpoints":[{"url":"http:\/\/csp-reporting-service.com\/my-project\/endpoint"}]}	0.02%
{"group":"default","max_age":31536000,"endpoints":[{"url":"https://spoortz.report-uri.com/a/d/g"}],"include_subdomains":true}	0.01%
{"group":"network-errors","max_age":86400,"endpoints":[{"url":"https://spo.nel.measure.office.net/api/report?tenantId=00000000-0000-0000-0000-000000000000&destinationEndpoint=Edge-Prod-BY3&frontEnd=AFD"}]}	0.01%
{"group":"network-errors","max_age":86400,"endpoints":[{"url":"https://spo.nel.measure.office.net/api/report?tenantId=00000000-0000-0000-0000-000000000000&destinationEndpoint=Edge-Prod-LAX31r5c&frontEnd=AFD"}]}	0.01%
{"group":"network-errors","max_age":86400,"endpoints":[{"url":"https://spo.nel.measure.office.net/api/report?tenantId=00000000-0000-0000-0000-000000000000&destinationEndpoint=Edge-Prod-LAX31r5b&frontEnd=AFD"}]}	0.01%
{"group":"DurableDeepLinkUi","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/DurableDeepLinkUi/external"}]}	0.01%
{"group":"default","max_age":31536000,"endpoints":[{"url":"https://auctoresgmbh.report-uri.com/a/d/g"}],"include_subdomains":true}	0.01%
{"group":"network-errors","max_age":86400,"endpoints":[{"url":"https://spo.nel.measure.office.net/api/report?tenantId=00000000-0000-0000-0000-000000000000&destinationEndpoint=Edge-Prod-LAX31r5a&frontEnd=AFD"}]}	0.01%
{"group":"webscaleCspEndpoint","max-age":10886400,"endpoints":[{"url":"https://xdymhcopnh.execute-api.us-east-1.amazonaws.com/default/cspReportingMonitor"}]}	0.01%
{"group":"report-endpoint","max_age":86400,"endpoints":[{"url":"https://csp.thehut.net/cspReport.txt","priority":1,"weight":1}],"include_subdomains":true}	0.01%
{ "group": "csp-log", "max_age": 43200, "endpoints": [ { "url": "https://www.kayak.com/s/run/cspreport/reportHttp" } ] }	0.01%
{"group":"report-endpoint","max_age":10886400,"endpoints":[{"url":"\/csp_reporter.php"}]}	0.00%
{:group=>"csp-endpoint", :"max-age"=>10886400, :endpoints=>[{:url=>"https://csp.rivals.com/api/v1/content_security_policy_reports"}]},base-uri *.rivals.com;frame-ancestors 'self' *.rivals.com *.rivals.com *.yahoo.com;	0.00%