DuckAssistBot (DuckDuckGo)
AI search · Current version 1.2
What it is
DuckAssistBot crawls pages in real time for DuckDuckGo’s AI-assisted answers, which cite their sources. DuckDuckGo says the data is not used to train AI models, and that opting out does not affect organic rankings or whether your site appears in its search results.
Official documentation: duckduckgo.com · checked 13 Nov 2026
DuckAssistBot user agent
DuckAssistBot/1.2; (+http://duckduckgo.com/duckassistbot.html)Official documentation: duckduckgo.com/duckduckgo-help-pages/results/duckassistbot · checked 13 Nov 2026
Block or allow DuckAssistBot in robots.txt
Put these lines at the top of the robots.txt file in your site’s root (example.com/robots.txt). Each subdomain needs its own file.
Block DuckAssistBot from the whole site
User-agent: DuckAssistBot
Disallow: /
Allow DuckAssistBot
User-agent: DuckAssistBot
Allow: /
# repeat here the Disallow lines of your User-agent: * group
If DuckAssistBot is not named in robots.txt, it already follows your User-agent: * rules, so you don’t need anything. A group of its own replaces the * group for this bot entirely: if you add one, repeat your general Disallow lines in it.
- DuckDuckGo says a robots.txt change takes effect after 72 hours.
DuckAssistBot IP ranges
duckduckgo.com/duckassistbot.json
Official list: 486 ranges · published by the owner 1 Sept 2026 · we checked it 13 Nov 2026
Check an IP from your logs
Show all 486
- 4.144.148.23/32
- 4.144.182.50/32
- 4.144.227.142/32
- 4.144.251.39/32
- 4.149.142.7/32
- 4.149.159.71/32
- 4.149.159.102/32
- 4.149.216.220/32
- 4.150.142.218/32
- 4.154.193.167/32
- 4.156.30.123/32
- 4.156.136.79/32
- 4.156.154.107/32
- 4.157.77.76/32
- 4.172.49.103/32
- 4.177.16.196/32
- 4.182.10.198/32
- 4.182.131.108/32
- 4.195.133.120/32
- 4.201.125.59/32
- 4.201.141.71/32
- 4.201.197.203/32
- 4.201.206.133/32
- 4.201.220.8/32
- 4.207.220.92/32
- 4.209.224.56/32
- 4.213.46.14/32
- 4.226.40.135/32
- 4.228.76.163/32
- 4.237.155.54/32
- 4.237.244.80/32
- 4.242.119.13/32
- 4.246.10.252/32
- 4.248.234.26/32
- 4.249.216.104/32
- 4.249.223.51/32
- 4.249.238.11/32
- 4.254.123.56/32
- 4.255.35.121/32
- 4.255.39.80/32
- 13.86.35.212/32
- 13.89.106.77/32
- 13.90.178.139/32
- 20.3.1.178/32
- 20.3.60.212/32
- 20.8.252.26/32
- 20.9.114.242/32
- 20.12.141.99/32
- 20.12.249.123/32
- 20.12.252.21/32
- 20.13.44.19/32
- 20.15.142.178/32
- 20.23.88.231/32
- 20.29.149.44/32
- 20.29.154.56/32
- 20.40.133.240/32
- 20.40.147.172/32
- 20.43.150.85/32
- 20.43.150.93/32
- 20.43.152.28/32
- 20.43.172.120/32
- 20.44.222.1/32
- 20.49.129.236/32
- 20.49.136.28/32
- 20.50.48.159/32
- 20.50.48.192/32
- 20.50.49.0/32
- 20.50.49.25/32
- 20.50.49.40/32
- 20.50.49.55/32
- 20.50.49.237/32
- 20.50.50.46/32
- 20.50.50.118/32
- 20.50.50.121/32
- 20.50.50.123/32
- 20.50.50.130/32
- 20.50.50.134/32
- 20.50.50.145/32
- 20.50.50.146/32
- 20.50.50.163/32
- 20.50.168.91/32
- 20.53.78.106/32
- 20.53.78.123/32
- 20.53.78.138/32
- 20.53.78.144/32
- 20.53.78.236/32
- 20.53.91.2/32
- 20.53.92.211/32
- 20.53.134.160/32
- 20.54.224.39/32
- 20.56.197.58/32
- 20.56.197.63/32
- 20.59.0.65/32
- 20.61.34.40/32
- 20.61.142.192/32
- 20.62.224.44/32
- 20.64.185.45/32
- 20.69.74.250/32
- 20.69.129.205/32
- 20.69.131.45/32
- 20.69.138.149/32
- 20.69.138.189/32
- 20.69.144.137/32
- 20.69.146.171/32
- 20.69.147.21/32
- 20.69.171.204/32
- 20.71.12.143/32
- 20.71.69.210/32
- 20.72.197.110/32
- 20.72.203.250/32
- 20.72.218.29/32
- 20.72.221.33/32
- 20.72.221.45/32
- 20.72.225.13/32
- 20.72.242.93/32
- 20.72.242.209/32
- 20.73.132.240/32
- 20.73.202.147/32
- 20.75.144.152/32
- 20.75.254.61/32
- 20.77.146.108/32
- 20.79.226.26/32
- 20.79.238.198/32
- 20.79.239.66/32
- 20.80.114.203/32
- 20.80.120.41/32
- 20.80.129.80/32
- 20.80.135.7/32
- 20.80.156.88/32
- 20.81.115.13/32
- 20.82.24.207/32
- 20.84.138.61/32
- 20.84.219.45/32
- 20.84.251.223/32
- 20.85.138.75/32
- 20.85.167.56/32
- 20.85.187.146/32
- 20.88.168.65/32
- 20.93.28.24/32
- 20.93.49.96/32
- 20.99.154.113/32
- 20.99.255.235/32
- 20.100.136.36/32
- 20.100.140.155/32
- 20.101.17.173/32
- 20.102.34.205/32
- 20.109.129.162/32
- 20.109.130.190/32
- 20.109.241.18/32
- 20.112.58.44/32
- 20.113.3.121/32
- 20.113.14.159/32
- 20.115.181.187/32
- 20.118.11.251/32
- 20.119.127.146/32
- 20.121.75.32/32
- 20.166.171.150/32
- 20.170.75.54/32
- 20.175.232.228/32
- 20.185.79.15/32
- 20.185.79.47/32
- 20.190.21.172/32
- 20.191.44.16/32
- 20.191.44.22/32
- 20.191.44.119/32
- 20.191.44.234/32
- 20.191.45.212/32
- 20.193.12.126/32
- 20.193.24.10/32
- 20.193.24.251/32
- 20.193.25.197/32
- 20.193.27.215/32
- 20.193.45.113/32
- 20.195.58.189/32
- 20.195.108.47/32
- 20.197.209.11/32
- 20.197.209.27/32
- 20.198.132.126/32
- 20.198.152.208/32
- 20.201.15.208/32
- 20.204.228.200/32
- 20.204.240.172/32
- 20.204.241.148/32
- 20.204.242.19/32
- 20.204.242.101/32
- 20.204.243.55/32
- 20.204.246.81/32
- 20.204.246.254/32
- 20.207.72.11/32
- 20.207.72.21/32
- 20.207.72.110/32
- 20.207.72.113/32
- 20.207.97.190/32
- 20.207.99.197/32
- 20.207.107.181/32
- 20.207.117.66/32
- 20.212.90.107/32
- 20.212.139.34/32
- 20.216.200.223/32
- 20.219.43.246/32
- 20.219.45.67/32
- 20.219.45.190/32
- 20.221.10.115/32
- 20.221.84.185/32
- 20.226.133.105/32
- 20.231.254.179/32
- 20.232.51.46/32
- 20.232.249.95/32
- 20.236.40.93/32
- 20.236.195.196/32
- 20.236.198.192/32
- 20.236.227.113/32
- 20.236.233.23/32
- 20.236.247.180/32
- 20.237.1.51/32
- 20.241.135.19/32
- 20.241.147.151/32
- 20.241.153.203/32
- 20.241.164.5/32
- 20.241.241.100/32
- 20.242.133.53/32
- 20.242.135.165/32
- 20.242.211.139/32
- 20.242.215.53/32
- 20.242.237.240/32
- 20.246.132.168/32
- 20.246.225.34/32
- 20.247.235.11/32
- 20.250.51.113/32
- 20.252.9.6/32
- 20.252.16.193/32
- 20.252.41.18/32
- 20.252.63.162/32
- 20.252.88.10/32
- 20.253.59.76/32
- 20.253.96.199/32
- 20.253.114.51/32
- 40.64.67.220/32
- 40.64.78.45/32
- 40.64.88.145/32
- 40.64.105.247/32
- 40.64.106.11/32
- 40.64.106.152/32
- 40.65.78.86/32
- 40.76.162.17/32
- 40.76.162.191/32
- 40.76.162.208/32
- 40.76.162.247/32
- 40.76.163.7/32
- 40.76.163.23/32
- 40.76.173.151/32
- 40.81.250.205/32
- 40.82.218.203/32
- 40.88.21.235/32
- 40.88.195.62/32
- 40.89.243.175/32
- 40.114.182.45/32
- 40.114.182.153/32
- 40.114.182.172/32
- 40.114.183.88/32
- 40.114.183.196/32
- 40.114.183.251/32
- 40.119.232.50/32
- 40.119.232.146/32
- 40.119.232.215/32
- 40.119.232.218/32
- 40.119.232.251/32
- 40.121.121.54/32
- 40.127.154.196/32
- 48.192.16.86/32
- 48.192.74.178/32
- 48.200.33.227/32
- 48.202.155.200/32
- 48.202.171.124/32
- 48.204.32.87/32
- 48.206.18.152/32
- 48.217.23.236/32
- 48.217.129.210/32
- 48.217.212.89/32
- 48.223.209.110/32
- 51.8.31.28/32
- 51.8.71.117/32
- 51.8.253.152/32
- 51.104.144.31/32
- 51.104.146.225/32
- 51.104.146.235/32
- 51.104.160.167/32
- 51.104.160.177/32
- 51.104.161.32/32
- 51.104.162.149/32
- 51.104.163.250/32
- 51.104.164.109/32
- 51.104.164.147/32
- 51.104.164.189/32
- 51.104.164.215/32
- 51.104.166.111/32
- 51.104.167.19/32
- 51.104.167.52/32
- 51.104.167.54/32
- 51.104.167.61/32
- 51.104.167.71/32
- 51.104.167.87/32
- 51.104.167.88/32
- 51.104.167.95/32
- 51.104.167.96/32
- 51.104.167.104/32
- 51.104.167.110/32
- 51.104.180.26/32
- 51.104.180.47/32
- 51.104.180.53/32
- 51.107.40.209/32
- 51.116.131.221/32
- 51.120.48.122/32
- 51.138.90.161/32
- 51.138.90.206/32
- 51.138.90.233/32
- 51.143.114.45/32
- 51.145.185.16/32
- 52.142.24.149/32
- 52.142.26.175/32
- 52.143.95.162/32
- 52.143.95.204/32
- 52.143.241.111/32
- 52.143.242.6/32
- 52.143.243.117/32
- 52.143.244.81/32
- 52.143.247.235/32
- 52.146.57.51/32
- 52.146.58.236/32
- 52.146.59.12/32
- 52.146.59.154/32
- 52.146.59.156/32
- 52.146.63.80/32
- 52.148.161.87/32
- 52.148.165.38/32
- 52.149.25.43/32
- 52.149.28.18/32
- 52.149.28.83/32
- 52.149.30.45/32
- 52.149.56.151/32
- 52.149.58.27/32
- 52.149.58.69/32
- 52.149.58.139/32
- 52.149.58.173/32
- 52.149.60.38/32
- 52.149.61.51/32
- 52.154.60.82/32
- 52.154.169.50/32
- 52.154.169.200/32
- 52.154.170.26/32
- 52.154.170.28/32
- 52.154.170.88/32
- 52.154.170.96/32
- 52.154.170.113/32
- 52.154.170.117/32
- 52.154.170.122/32
- 52.154.170.209/32
- 52.154.170.229/32
- 52.154.170.243/32
- 52.154.171.0/32
- 52.154.171.44/32
- 52.154.171.70/32
- 52.154.171.87/32
- 52.154.171.150/32
- 52.154.171.196/32
- 52.154.171.205/32
- 52.154.171.235/32
- 52.154.171.250/32
- 52.154.172.2/32
- 52.154.204.93/32
- 52.185.93.208/32
- 52.186.37.211/32
- 52.188.89.106/32
- 52.189.70.103/32
- 52.190.37.160/32
- 52.191.82.242/32
- 52.191.222.158/32
- 52.224.16.221/32
- 52.224.16.229/32
- 52.224.19.152/32
- 52.224.20.174/32
- 52.224.20.181/32
- 52.224.20.186/32
- 52.224.20.190/32
- 52.224.20.193/32
- 52.224.20.203/32
- 52.224.20.204/32
- 52.224.20.223/32
- 52.224.20.227/32
- 52.224.20.249/32
- 52.224.21.4/32
- 52.224.21.19/32
- 52.224.21.20/32
- 52.224.21.23/32
- 52.224.21.27/32
- 52.224.21.49/32
- 52.224.21.51/32
- 52.224.21.53/32
- 52.224.21.55/32
- 52.224.21.61/32
- 52.224.147.21/32
- 52.224.191.245/32
- 52.242.224.168/32
- 52.250.46.221/32
- 57.151.44.140/32
- 57.152.17.237/32
- 57.152.62.107/32
- 57.152.72.128/32
- 57.155.18.44/32
- 57.165.205.172/32
- 57.167.88.38/32
- 64.236.15.33/32
- 64.236.93.100/32
- 64.236.118.43/32
- 68.219.152.220/32
- 72.144.95.185/32
- 74.163.169.106/32
- 74.163.208.206/32
- 74.179.200.126/32
- 74.179.232.116/32
- 74.242.194.48/32
- 98.70.219.37/32
- 104.43.54.127/32
- 104.43.55.116/32
- 104.43.55.117/32
- 104.43.55.166/32
- 104.43.55.167/32
- 108.141.83.74/32
- 128.203.82.154/32
- 128.203.132.152/32
- 128.203.181.79/32
- 128.203.214.241/32
- 128.203.236.110/32
- 130.107.228.224/32
- 131.145.39.118/32
- 131.189.183.241/32
- 132.164.209.198/32
- 132.196.106.146/32
- 132.220.1.71/32
- 134.33.207.189/32
- 135.171.251.169/32
- 135.233.63.237/32
- 135.234.221.112/32
- 135.235.183.95/32
- 172.168.12.93/32
- 172.168.43.43/32
- 172.168.51.216/32
- 172.168.53.53/32
- 172.168.81.217/32
- 172.168.94.160/32
- 172.168.115.250/32
- 172.168.133.76/32
- 172.168.137.102/32
- 172.168.152.88/32
- 172.168.173.230/32
- 172.168.190.186/32
- 172.168.227.120/32
- 172.168.254.119/32
- 172.169.7.33/32
- 172.169.17.165/32
- 172.169.28.184/32
- 172.169.36.43/32
- 172.169.53.208/32
- 172.169.60.134/32
- 172.169.93.148/32
- 172.169.164.109/32
- 172.169.177.131/32
- 172.169.181.237/32
- 172.171.37.221/32
- 172.179.105.87/32
- 172.179.128.118/32
- 172.188.250.220/32
- 172.189.40.18/32
- 172.193.184.42/32
- 172.193.197.146/32
- 172.193.245.229/32
- 172.194.141.49/32
- 172.199.55.212/32
- 172.210.111.68/32
- 191.233.3.197/32
- 191.233.3.202/32
- 191.234.216.4/32
- 191.234.216.178/32
- 191.235.201.214/32
- 191.235.202.38/32
- 191.235.202.48/32
Does it respect robots.txt and Crawl-delay?
robots.txt: yes, DuckAssistBot follows it according to its owner.
“Once you’ve updated the file to disallow the DuckAssistBot user agent, the change will take effect after 72 hours and DuckAssistBot will stop crawling your site.” — DuckDuckGo documentation
Crawl-delay: the owner’s documentation does not mention it for DuckAssistBot, so don’t rely on it.
Should you block DuckAssistBot?
Think twice. DuckAssistBot is how DuckDuckGo’s AI search finds your pages; block it and your site can drop out of its answers and links. If your concern is model training, block the training bot instead.
Check your site
See whether your robots.txt and firewall let DuckAssistBot in — together with every other AI bot in this directory. Free, no sign-up.
Questions
What is the DuckAssistBot user agent string?+
DuckDuckGo documents it as: DuckAssistBot/1.2; (+http://duckduckgo.com/duckassistbot.html)
How do I block DuckAssistBot in robots.txt?+
Add a group for it to robots.txt in your site’s root: “User-agent: DuckAssistBot” followed by “Disallow: /”.
What IP addresses does DuckAssistBot use?+
DuckDuckGo publishes 486 ranges at https://duckduckgo.com/duckassistbot.json. Requests that call themselves DuckAssistBot from other addresses are most likely fake.
Does DuckAssistBot respect robots.txt?+
robots.txt: yes, DuckAssistBot follows it according to its owner.