DuckAssistBot
by DuckDuckGo
About this crawler
DuckDuckGo real-time crawler for AI-assisted answers with citations.
Usually means: A person asked an AI assistant a question, and the assistant fetched this URL to answer with fresh context or citations.
User agent
DuckAssistBotOpenRevenue matches these as user-agent tokens, not full browser strings. Providers may add surrounding version or product text.
IP verification
Verified when user agent and IP range both match
OpenRevenue first matches the crawler user-agent token, then compares the request IP with published ranges from DuckDuckGo.
User agent
Request user agent contains DuckAssistBot.
Request IP
Server-side tracking forwards the crawler IP seen by your backend.
Range check
The IP is compared with published CIDR ranges from the JSON range endpoint.
Sample IP ranges
104.43.54.127/32104.43.55.116/32104.43.55.117/32104.43.55.166/32104.43.55.167/32108.141.83.74/32128.203.132.152/32128.203.181.79/32128.203.214.241/32128.203.236.110/32Showing up to 10 ranges from the published official source.