Amazon · AI answers
Amzn-User
Identify Amzn-User by its user agent. Check request identity, review robots.txt controls and track visits in Aiola Analytics.
Key facts
User-agent token:
Amzn-UserAI answers: Fetched to answer a user's question now.
Amazon publishes official IP ranges; verify requests against them.
What Amzn-User is
Amzn-User fetches current web information for user actions such as Alexa questions and may not follow every robots.txt directive. Amazon publishes its IP list as JSON embedded in an HTML page.
In Aiola's taxonomy, AI answers means fetched to answer a user's question now.
Amzn-User user agent
Look for the match token inside the complete HTTP User-Agent header. Tokens can be spoofed, so use the network checks below for authentication.
Full example User-Agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amzn-User/0.1) Chrome/W.X.Y.Z Safari/537.36Case-insensitive match token
Amzn-UserOfficial IP ranges
Amazon publishes an official IP range list. This cached snapshot contains 1023 CIDR prefixes, last fetched 2026-10-23. Open the live source
Official IP range snapshot
100.24.86.21/32
100.24.94.158/32
100.25.233.255/32
100.26.69.34/32
100.27.118.106/32
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98.87.95.44/32Verify a Amzn-User request
For Amzn-User, compare the source IP from your trusted edge or server against Amazon’s current published prefixes.
Test one CIDR in Python (replace REQUEST_IP)
python3 -c 'import ipaddress; print(ipaddress.ip_address("REQUEST_IP") in ipaddress.ip_network("100.24.86.21/32"))'Test every current prefix in the vendor feed and re-fetch it regularly. This cached snapshot is evidence of publication, not a permanent firewall list.
Control Amzn-User with robots.txt
Amzn-User is user-triggered. Amazon's controls may differ from automated crawling, so do not assume a robots.txt block is an authentication boundary.
Allow Amzn-User
User-agent: Amzn-User
Allow: /Block Amzn-User
User-agent: Amzn-User
Disallow: /Aiola Analytics
See every Amzn-User visit on your site
Aiola tracks 70 AI, search and link-preview crawlers next to your human traffic. See when Amzn-User arrives, which pages it requests and how that changes over time. Hosted Analytics needs Pro or a trial.
Common questions
Build, ship and fix in one app
Errors, user feedback, GitHub and analytics live next to your coding agents in one desktop app. Every issue becomes a task an agent can take.