DuckDuckGo · Indexing

DuckDuckBot

Identify DuckDuckBot by its user agent. Check request identity, review robots.txt controls and track visits in Aiola Analytics.

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Key facts

User-agent token: DuckDuckBot

Indexing: Crawled for AI or search indexing.

DuckDuckGo publishes official IP ranges; verify requests against them.

What DuckDuckBot is

DuckDuckGo's search crawler. Distinct from DuckAssistBot, which fetches pages to answer a live question and is bucketed as answers.

In Aiola's taxonomy, Indexing means crawled for ai or search indexing.

DuckDuckBot 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

DuckDuckBot/1.1; (+http://duckduckgo.com/duckduckbot.html)

Case-insensitive match token

DuckDuckBot

Official IP ranges

DuckDuckGo publishes an official IP range list. This cached snapshot contains 486 CIDR prefixes, last fetched 2026-10-23. Open the live source

Official IP range snapshot

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
128.203.132.152/32
128.203.181.79/32
128.203.214.241/32
128.203.236.110/32
128.203.82.154/32
13.86.35.212/32
13.89.106.77/32
13.90.178.139/32
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
172.168.115.250/32
172.168.12.93/32
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
172.168.43.43/32
172.168.51.216/32
172.168.53.53/32
172.168.81.217/32
172.168.94.160/32
172.169.164.109/32
172.169.17.165/32
172.169.177.131/32
172.169.181.237/32
172.169.28.184/32
172.169.36.43/32
172.169.53.208/32
172.169.60.134/32
172.169.7.33/32
172.169.93.148/32
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
191.234.216.178/32
191.234.216.4/32
191.235.201.214/32
191.235.202.38/32
191.235.202.48/32
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
20.113.14.159/32
20.113.3.121/32
20.115.181.187/32
20.118.11.251/32
20.119.127.146/32
20.12.141.99/32
20.12.249.123/32
20.12.252.21/32
20.121.75.32/32
20.13.44.19/32
20.15.142.178/32
20.166.171.150/32
20.170.75.54/32
20.175.232.228/32
20.185.79.15/32
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20.190.21.172/32
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20.23.88.231/32
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20.29.149.44/32
20.29.154.56/32
20.3.1.178/32
20.3.60.212/32
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
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20.50.168.91/32
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20.69.129.205/32
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20.69.144.137/32
20.69.146.171/32
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20.69.74.250/32
20.71.12.143/32
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20.72.197.110/32
20.72.203.250/32
20.72.218.29/32
20.72.221.33/32
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20.72.225.13/32
20.72.242.209/32
20.72.242.93/32
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
20.8.252.26/32
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
20.9.114.242/32
20.93.28.24/32
20.93.49.96/32
20.99.154.113/32
20.99.255.235/32
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
4.149.159.102/32
4.149.159.71/32
4.149.216.220/32
4.150.142.218/32
4.154.193.167/32
4.156.136.79/32
4.156.154.107/32
4.156.30.123/32
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
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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
40.114.182.153/32
40.114.182.172/32
40.114.182.45/32
40.114.183.196/32
40.114.183.251/32
40.114.183.88/32
40.119.232.146/32
40.119.232.215/32
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40.119.232.251/32
40.119.232.50/32
40.121.121.54/32
40.127.154.196/32
40.64.105.247/32
40.64.106.11/32
40.64.106.152/32
40.64.67.220/32
40.64.78.45/32
40.64.88.145/32
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
40.76.163.23/32
40.76.163.7/32
40.76.173.151/32
40.81.250.205/32
40.82.218.203/32
40.88.195.62/32
40.88.21.235/32
40.89.243.175/32
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
48.217.129.210/32
48.217.212.89/32
48.217.23.236/32
48.223.209.110/32
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
51.104.167.104/32
51.104.167.110/32
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
51.104.180.26/32
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
51.8.253.152/32
51.8.31.28/32
51.8.71.117/32
52.142.24.149/32
52.142.26.175/32
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
52.143.95.162/32
52.143.95.204/32
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
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52.149.30.45/32
52.149.56.151/32
52.149.58.139/32
52.149.58.173/32
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52.154.169.200/32
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52.154.170.88/32
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52.154.171.0/32
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
52.154.171.44/32
52.154.171.70/32
52.154.171.87/32
52.154.172.2/32
52.154.204.93/32
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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
52.191.222.158/32
52.191.82.242/32
52.224.147.21/32
52.224.16.221/32
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52.224.19.152/32
52.224.191.245/32
52.224.20.174/32
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52.224.21.4/32
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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
64.236.118.43/32
64.236.15.33/32
64.236.93.100/32
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

Verify a DuckDuckBot request

For DuckDuckBot, compare the source IP from your trusted edge or server against DuckDuckGo’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("104.43.54.127/32"))'

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 DuckDuckBot with robots.txt

DuckDuckGo documents crawler controls for this bot family. Robots.txt can direct cooperative crawling, but it cannot prove that a request is authentic.

Allow DuckDuckBot

User-agent: DuckDuckBot
Allow: /

Block DuckDuckBot

User-agent: DuckDuckBot
Disallow: /

Read official crawler documentation

Aiola Analytics

See every DuckDuckBot visit on your site

Aiola tracks 70 AI, search and link-preview crawlers next to your human traffic. See when DuckDuckBot arrives, which pages it requests and how that changes over time. Hosted Analytics needs Pro or a trial.

Download Aiola Set up bot tracking

Aiola Analytics showing AI crawler visits by bot and page

Common questions

DuckDuckGo's search crawler. Distinct from DuckAssistBot, which fetches pages to answer a live question and is bucketed as answers.

Match the case-insensitive token “DuckDuckBot” in the User-Agent header. A matching header alone does not authenticate the sender.

DuckDuckGo publishes an IP range list, and this page snapshots 486 CIDR prefixes fetched on 2026-10-23. Match the source IP against the current vendor feed before trusting it.

Use a specific “DuckDuckBot” group for crawler-specific rules. Review the policy details below: robots.txt is a request to compliant crawlers, not an access-control system.

Build, ship and fix in one app

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Download Aiola

What DuckDuckBot is

DuckDuckBot user agent

Official IP ranges

Verify a DuckDuckBot request

Control DuckDuckBot with robots.txt

See every DuckDuckBot visit on your site

Common questions

What is DuckDuckBot?

What user-agent token identifies DuckDuckBot?

Can I verify DuckDuckBot by IP address?

Can robots.txt block DuckDuckBot?

Build, ship and fix in one app