Baidu

ASN

Baidu documents Baiduspider behavior and robots rules. Baidu does not publish a single downloadable JSON of crawler prefixes — use the ASN context below with reverse DNS and Baidu’s crawler documentation.

Baiduspider and related crawlers are also frequently observed on China Unicom backbone and IDC space, notably AS4837 and AS23724, in addition to Baidu’s own AS38365/AS55967. Use reverse DNS (*.baidu.com / *.baidu.jp) and vendor guidance - not ASN or static lists alone.

Autonomous systems (ASNs)

Known ASNs used by Baidu.

AS38365 AS55967 AS4837 AS23724

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