Amzn-SearchBot: user agent, IP verification and robots.txt
Amzn-SearchBot is operated by Amazon. It is classified here as Search (Amazon and Alexa search). Verification method: Published, but not machine-readable.
Exact user-agent string
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amzn-SearchBot/0.1) Chrome/W.X.Y.Z Safari/537.36
robots.txt token: Amzn-SearchBot. The user-agent string is self-asserted and can be
forged by anyone. It is a claim, not proof.
How to verify Amzn-SearchBot is genuine
Amazon publishes addresses at https://developer.amazon.com/amazonbot/searchbot-ip-addresses/, but as a rendered HTML page rather than a machine-readable file, so it cannot be pulled automatically.
How to block or allow Amzn-SearchBot
User-agent: Amzn-SearchBot
Disallow: /Replace Disallow with Allow to permit it explicitly.
What blocking Amzn-SearchBot costs you
Amazon states that permitting Amzn-SearchBot makes your content eligible to appear in search experiences such as Alexa. It also states the token does not crawl content for generative AI model training, so blocking it costs visibility and buys no training protection.
What is specific to Amzn-SearchBot
Amzn-SearchBot has a default that no other crawler in this reference has: Amazon states that if your robots.txt does not mention Amzn-SearchBot but does allow other search bots, it will crawl according to the rules you gave those other bots. Silence is read as consent by proxy. To actually exclude it you have to name it. Its IP page is also the only one of Amazon's three that ships CIDR blocks in static HTML, currently 512 of them, so it is the one Amazon token you can build an automated allowlist for without rendering JavaScript.
Verify a request claiming to be Amzn-SearchBot
Check a Amzn-SearchBot request against Amazon's published ranges
Source
Primary documentation: https://developer.amazon.com/amazonbot. Last verified 2026-08-02.