Largely abandoned format for declaring website's privacy policy in machine-readable format. The only reason for many websites to use the header was that old versions of Microsoft Internet Explorer disallowed third-party cookies on websites missing P3P.

Reference...

We have seen 118229 websites setting the P3P HTTP header and 4845 unique values of this header.

  • ipsec.pl policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
  • payments-uk.amazon.com policyref="http://www.amazon.com/w3c/p3p.xml",CP="CAO DSP LAW CUR ADM IVAo IVDo CONo OTPo OUR DELi PUBi OTRi BUS PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA HEA PRE LOC GOV OTC "
  • maxgo.com CP="NOI ADM DEV PSAi OUR IND"
  • bellav.com.au CP="NOI DSP COR NID ADMa OPTa OUR NOR", CP="NOI DSP COR NID ADMa OPTa OUR NOR"
  • korbitblog.tumblr.com CP="Tumblr's privacy policy is available here: https://www.tumblr.com/policy/en/privacy"
  • le-nail-art.fr "policyref='/w3c/policy.xml', CP='NOI DSP COR CURa ADMi DEVa TAIa OUR LEG BUS UNI COM NAV INT'"
  • rtunoticias.com CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"
  • starbucks.in CP="CAO PSA OUR"
  • kawerna.pl CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"
  • acamusic.co.uk CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"
  • lovefilm.com policyref="https://www.amazon.co.uk/w3c/p3p.xml",CP="CAO DSP LAW CUR ADM IVAo IVDo CONo OTPo OUR DELi PUBi OTRi BUS PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA HEA PRE LOC GOV OTC "
  • lulu.com CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"
  • yahoo.com policyref="https://policies.yahoo.com/w3c/p3p.xml", CP="CAO DSP COR CUR ADM DEV TAI PSA PSD IVAi IVDi CONi TELo OTPi OUR DELi SAMi OTRi UNRi PUBi IND PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA POL HEA PRE LOC GOV"
  • roomkey.com CP="This is not a P3P policy! See http://www.roomkey.com/privacystatement.html for our applicable privacy policy."
  • nationalpost.com CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"
  • lyckasmedmat.se CP="IDC DSP COR CURa ADMa OUR IND PHY ONL COM STA"
  • alt1040.com CP="NOI ADM DEV COM NAV OUR STP"
  • pornorama.com policyref="/p3p.xml", CP="NOI CURa ADMa DEVa TAIa OUR BUS IND UNI COM NAV INT"
  • fancy.com CP="ALL CURa ADMa DEVa TAIa OUR BUS IND PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA POL HEA PRE LOC OTC"
  • eversave.com CP="CAO CNT COM CUR DEV DSP NAV OUR PSA PSD SAM STA TAI UNI"
  • imperiaonline.org CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"
  • pricegrabber.com CP="NON DSP ADM DEV PSD CUSo OUR IND STP PRE NAV UNI"
  • www.paranormal-ch.com CP="BUS OUR PHY STP ADM CUR DEV PSA PSD"
  • empowernetwork.com CP="NOI DSP COR NID CUR ADM DEV OUR BUS"
  • purepeople.com "policyref='/w3c/policy.xml', CP='NOI DSP COR CURa ADMi DEVa TAIa OUR LEG BUS UNI COM NAV INT'"
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