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-Debug 4,967
Percentage of websites that use X-FB-Debug header <0.1%
Total discovered header values 4,967
Header uses directives No
Header values are unique or random Yes
Most popular in the country Ireland

Distribution by websites popularity

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

Top 10k sites 227 websites
Top 100k sites 397 websites
Top 1m sites 583 websites

Websites utilizing X-FB-Debug

List of websites that use X-FB-Debug header

Domain Country Rank Contacts
facebook.com Ireland 2
www.facebook.com Ireland 2
messenger.com Ireland 12
www.messenger.com Ireland 12
workplace.com Ireland 15
www.workplace.com Ireland 15
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 value Value prevalence
//99vKzWRMgr6MZ9AT8tps7Hyxj7usQAfm7vesVdNqw4GJG7DQ3NANMaQ4aA5iyOc+cww2z/I9ohVFG4B4Zirw== 0.02%
//aHXAtgjLVyNlCtRAEmZV64Qd7qdmSqkdOYS5kPtr6bBORvjkGF8DLVNVCzpq+81MB18zyA9dmXWP/Fa8Zk2w== 0.02%
//ERlzErJpGU7fgdwmMJFlDVut1jK5z9deh0gSq6r8c2OkSrYAO7FT65aMuBBK/OlyXX8APrp9sYimLRoLWFUA== 0.02%
//HWvC2HR5ZYYwcUvI5Dp6ql4Dn+cyJ09M7oxLwN0Lh5q2gNucubaTTWShia5vDjQAyqH7wnQbvhKb5g4E1W6Q== 0.02%
//rHBAL4LcjOaUEFq4JXupTxpSulbIsXXlL8jMRordXvZlSP+xIgPT8HkP7lEnwleZ+l3sh9OAk/WLHd1UzO+A== 0.02%
/+o4CbsptmdOary3FPsF3460/QuD8rIIZkYwpUhSw9eHE0UptGNB6tttDx9YjizftjHG1JBYvPsGb/KggTxIaQ== 0.02%
/1+PcL2WeX16i4FJrOV1Z88YuonZVe9x6Y7xUd0yN18vKzJtQWLbo4S6egfIYIl5iMcislM/0JeCJXA1100Jmw== 0.02%
/2lwsjszy7S1+lg3IqhZv6tsSHlVQsqRuv1FdantNMEgs2fHSMXG52TcY1ABgcXlk1heWBfUsRQKH8kccKRPSA== 0.02%
/3gA/Ku8/Gn1BG7I9av81s2PmmEMiYUna1x/Xcg6F59sHvsggi3uLR/FGjBn9cH4aDEpK6zvqPed6UNrrxxVXg== 0.02%
/3kBfUY5fxwkif7y5ga6+ItFPvzASjCiP2cTjIqkAU86E6eb1XmR/dsoonKXYiURUPBJMOTvS5w4P1UXJGe2cw== 0.02%
/3smp3djWhFlzE71IqdetbRcpR6QRDh9T9UXCEjNl3t1ygNSbqADgYmZ5AbzcQh3W3EzWKBg6dN+R96XbFLjUQ== 0.02%
/4Xz8wemUJumMuBFicF7AleXmKmdAZxuU9dNdSgpZFZe3N5oCJPyKfxZgQ4jC27mar3FcWPPI8ccrL1G5OaL7Q== 0.02%
/5XGTEhUwL7vwkjWgNxeTXqJ+HTIiyLFeC/uRV3TPs2ggTb7oPZB3JBgXnNptlqUHbOS2KEBoaqAbBWNapa4tg== 0.02%
/60qybGrljI4a/E2ZRy6tFeQeEfCfD3kbBCE2e2H56+4LibTEtGRJSnPxtkvWlveKVLvkaZ2XJne8k6uWVwHaw== 0.02%
/6VFXU08SdYoyscD12A+84KIDgG9MiN2G4CHSAQNYXjTKFUHosSRCutgWTK0EuR5lGfO2HauTqCYiCYPJMYzOg== 0.02%
/8CCgs/UMpgqNhEQLMlnmU2v+8enKy8wacDaQ+Hmv45GcG9HTX7vFdnbrav8yfA9goiIrub+pSo7MjPbQNikjQ== 0.02%
/95JQ1xG8O9jGAsqWKFgG8mhfRVzFHGPvpt5G8qp9LY4se2+KrIUfo2uWnbIWle3FjV0Xn2VQAtN5WNiygHFhw== 0.02%
/9H2B00fMTr5704fV9S63H1w8GZ7JUFUTjMs2jS1j2kq3ZQDQknTN5XpN7x4edvN7Q0Fb7PrzWZc9dGXSdTbaQ== 0.02%
/aApI264X/MAyTj2i8N0g36GtxWUpRNGMGtnRaDlqqtCiw99xlTkOaRNqmCxoCOgS35qexkakkERdp79TwCvwA== 0.02%
/Ap09B+kMGkKqfWAdJ/Vvw7qQ/1b3H26HqAWN9RG6Ng9b5EQ0dGiRwNdUhMgqxDkSaqc7kAT7s4YiVXmpHo7Dw== 0.02%