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-Debug3,606
Percentage of websites that use X-FB-Debug headerless than 0.1%
Total discovered header values3,606
Header uses directivesNo
Header values are unique or randomYes
Most popular in the country United States

X-FB-Debug Directives

X-FB-Debug directives value information and usage statistics
DirectiveShareWebsites countUnique Values

Websites utilizing X-FB-Debug

List of websites that use X-FB-Debug header
DomainCountryRankContacts
facebook.com United States2
instagram.com United States9
messenger.com United States12
workplace.com United States15
m.facebook.com United States16
api.whatsapp.com United States59
See full domain list

Common header values

List of top common X-FB-Debug header values
Header valueValue prevalence
//yN6nHcfnQBjtQ40QnY6qFiV/MiwHA0dxHvXu9u8DiiBTnk0DAxCWtSyyztzH3ujdprzQCMWSowFIMjuqOu8w==0%
/+/Ij5PYdrt+D1Mlt/etYdNne76G52xRY/hRYLSl7KQUyT80fTavAmnqOwBTM9b7Ir0moDOfadMIwMYBTp6Qqg==0%
/+n5Obq9e9j5oj6B55ojjnaxUp9noojJGYfRH0Y3f9EHTIwN0LxaHwCdQpCeGUM+ExymUtGKScR2Z8VSaOLMCA==0%
/0Bpzg+ANEeq5A7UY96wDomWilRYDTE1kTykgUVesqXMrWzIlHQUvpFWgPui3GhL9TVx58xnHy/fE8PPCSkGvA==0%
/1Xg0trNsPEZbSM/MISGVrWbnLxp46ve2U+Hc/STbLGtm+eOi/BsRBqoDiDQImqgrT/IwHmp8CCS7H83+kkZ4Q==0%
/1yWTvshu5wlwXNp35dQl9Cz8fguj5LHXsnNa/ObRncWgomoEqvkaBF66nmsWUamdcaQ5SrY66qYVtOmsTytLQ==0%
/2W0KcIUAwcH9RGDq4dYzZow2xA6MDotbsvnOkHtiZZfSqAuCTZCNw8mL5jx3ZJoWu1fNwtw5w/1HsesvcM21Q==0%
/4NsZDoWgOSY2Viu2F4QtQN5/3eU4iG3nlpFOijK8O1uo9GgZLoJLteXgRYzQ+LCL86KDeMYkjhW+vGEWOQQww==0%
/4YhBTsPGJOnJfPvzizyGX6Ec7rZ+wBxwDAOS6ia/qvYSwbOlExntlcOOTEiLv0chFqpTMIYCZHkKq7IPGbdkA==0%
/55i99/iIgYSZ4kNs6SFew6dg4ZgVN2Mmz57EmZYCRv3edyJL672anK1RU83LkW+AgBKvjodscTnRz4jf3pX/g==0%
/93x+CPPN4PtfHj2zIgQYj8crj4p01Q7StXpNSOR9NBgyybg3/WWunVblKoLiNci67UPJJH/jAaOfSaEzCl1Iw==0%
/9uLSde4kP+iPfuLBQDrRmM9hKw00ykRtqikJEqvtuzI8n80qzRlz2c5z6Tt+5F7ptmEmbKeWk6jkysojXxjAQ==0%
/AGkDzKuMY9KBLCUahQxOJFpDYyuZ5Y8BApAbyWzqFRKvXNFd4xIUcgFR/4EHeOvY5cyK4Bwau1eKkdMn3Y8BA==0%
/aqxJmt+i2ExKOV715dd7afTJstTXeMn8BMCZ8nnYVlWJPSQ8acLP1BSmruWKB2WJdjAX8qgwHa2dSOsTVXvGw==0%
/btMzru7wMLIBvtGYoZC2BG9XlRuf3fXzcbicUkqY2iZhDd9HCKlHDVatruODGEw9OBVPmrbjUdKGghavwNJMw==0%
/C5a8eOA9q0ZliQHZnbbtruCKi2C3eXBeTxMvDCEPCnWUO+TgTWzOH2sm/Nlpo7TFqAY0nVrDIXOYb2KbBsnIg==0%
/CgCH6t5C1zUrIgSdISIRWMGLnjZZxTrrrAiUKDMM/mAgu0+I3lp4wGDX+kDtPBzLX1+YmlzY1YijIFmOWGiYQ==0%
/cMDsbb3ARm19OyFLcgzIArEe0v/3Jvc0Xpb1gmzn1zQ/Zq469jKMNNGHvIM0mBrWHZeoKrSDd+ITSgu3XiRoA==0%
/CzzOhO3iwwQEYbV8MGQLApONugm1auCvLvbqbyZfCmCz09wK7P2JytWAJYvieU4pvSI0A7duX43rUdR4NrzUA==0%
/D15O6TAphdUTM7BKTxmxJf2wAcSkEbGz2cIKV8m9SZAg3j9Yqc7mDhV1xxhoxPprKcM6iJV1lBEg2fjLmVnQQ==0%