X-FB-Debug

HTTP response header

X-FB-Debug header contains a unique value that is used by Facebook to track issues and connect a submitted issue with a specific response.

Header usage statistics

X-FB-Debug response header information and usage statistics.

Websites using header X-FB-Debug5,354
Percentage of websites that use X-FB-Debug header<0.1%
Total discovered header values5,354
Header uses directivesNo
Header values are unique or randomYes
Most popular in the country US

X-FB-Debug Directives

X-FB-Debug directives value information and usage statistics

DirectiveShareWebsites countUnique Values

Distribution by websites popularity

X-FB-Debug detection in the top websites by popularity

Top 10k sites228 websites
Top 100k sites401 websites
Top 1m sites597 websites

Websites utilizing X-FB-Debug

List of websites that use X-FB-Debug header

DomainCountryRankContacts
facebook.com US2
www.facebook.com US2
messenger.com US12
www.messenger.com US12
workplace.com US15
www.workplace.com US15
See full domain list
Flat price per the report, subscription is not required.

Geographical Distribution

Header usage distribution by websites across the globe.






Common header values

List of top common X-FB-Debug header values

Header valueValue prevalence
//80XeDad9ahBaz4yiTH/0AE8gfCoYTK8++Egmzk1G6vXDuSg/Su8tQAfKnBcX5Lwf/5wDOHfOCItrZapJcvvw==0.02%
//T9sBtEx9U4GMMPhgsjDe2N5CNETd6XIjmjajOiU7ewtM2LMWe/NSeWW75ateUt0aiiNZgS75QvBEXr8X0g/Q==0.02%
/2b5x4pjYZ0FJK2fqdrUDXdvKOQKglNN4VfStYJ2v1goVot+0gmR5NRy31/xH2j+LbLUwBFoqUYqc9+kf4qjgw==0.02%
/2TA2a4dw/1i5uLRb5ykfcHPZR5bX1dABaqjMvKTqvZZ1gEedEItSc++cu/O4l9ywB0qVr4GobMZBRzE8xnslg==0.02%
/3o5J6DtH1oRzGZu552d5XRUcerFbR+1sYTQhcog10bnuXLV7WpwS9VV9S+fNgajz5jP7ZsNajTw+tWsBPeKrA==0.02%
/5T5KDfMLroWzKyA1LPW1wlPYvbbJ4XtctxtZEWxelXkQi/cOyshgNQ+PZS5Dzm/prQbdCKfBAVhZxXdwmTD2Q==0.02%
/6YZsF4A63JLUUb7htrQ0j7n+OllxF+VmrfRM2ISTIt7EYufYlTjVVT6f/FKEbg1S5x/5MSMU17HvkAWcrMY7A==0.02%
/6ZNUpLT1UiJCoiLCLd5j/4HKQJ9BloKHoU9sC4T7SQ7FdEYAJQsripEkcooUXLA3yueCMnlHEUFxuiJGtxyuQ==0.02%
/6ZrSJBqcgID1O5MhU90T310LOqfa3YpNEDz7nVPMgPtEw0TqjplYvUjUW8Sqn57RTTryplbnIH5bCdDePq88g==0.02%
/84rXCjDgnBr7NGkglg47eCmBbpy2x9Q5ovwG2lCSK/xugS0G2yBMjRMW6sMt6WLoPSFDLvkzWeV9hTrPo041w==0.02%
/8XjzinakWdxZBDQGzGOBkPieQ2fEqSG9QQvaoKEvTrqds82iEmudtsfM1TNYqLNrpQ9HeMxOrTUIzm1/WpWbw==0.02%
/903+LvLgn1zxKdXvfDB79B9lBrPFf8YsGWYjL9MDsunFMkgHbsc/kQ9iLQ/Ugot0T0uTDn+17f47jEAPK5yrg==0.02%
/92b0R2wapi/l6cVD3yU8KkH8ymj9dvuer61fUhT0Xisr32e5mjEjUrzd2IrNuVi3AAofKbBP1Y6yDmopAz3QQ==0.02%
/a/Lt01s2H6KBM328OhOz4GrYMJUBEJ1zSv1uMLcOi8QbyCih9hbC63utekinhJLeL4sBK+Nh5N8XJ5kiQPJpg==0.02%
/aABPz/Y+Zr8nkuxiXNAEbVvrvb+3BhZpY/vfHWr81yT9Sk9N8Kj8J0IP52X+uYR/+ElTHD0g6Tn8mRJfwndYA==0.02%
/aMdFqs1Hpa+dm9nP9sNEvr2fZlPYrzHbL05qI5uHh7vVtkhrdYBRlu6QM0Q/LuD5DT2Qo3WoYZHwxGgkUhh0A==0.02%
/bdbwTDAnFCghw31GXXibcg6wqfN3RpiahLeAyi8ioAmRI0Hwxwlbae/smUa/Axia0/ypb2rEFmhwkvcSY7yIg==0.02%
/cbV1yWg98SlUZhk2NXnk8izFOmJDla45WV8wNrxRV792GBDJ+XolG2eyhRTFXB4RzVNrrDpG1dq/stfD2ooOw==0.02%
/CMixSgkvoZd4vVz/SSBnS1nwCAWn06dJfw46Lprgg00HFTWPQ5KG4RkY+ZoL6vrLkAXQtxODSEFPfHRYh8D+g==0.02%
/d+mWZMpGaj7hvBwlL9dkGTkgTU0eOcQzUi18gQX4HCTsOce8PR6OnuIB/301q8o3IynsA2pO+kt9s01VESTJw==0.02%