Amzn-User: share of top websites blocking it

On 26 October 2026, 5.5% of the readable top 10k websites fully blocked Amzn-User in robots.txt (bounds 4.4% to 24.6% over all 8,220 websites, 1,659 of them unreadable); 3.8% blocked it partly and 1.5% named it.

Last verified 2026-10-26 21:13 UTC (daily run of 2026-10-26). Proof for that day.

Operator
Amazon, used for fetching web content to answer user queries through Alexa and other Amazon AI services
What it is
AI Assistants
Description
Amzn-User is an AI assistant operated by Amazon, used for fetching web content to answer user queries through Alexa and other Amazon AI services. More info can be found at https://knownagents.com/agents/amzn-user
robots.txt token
User-agent: Amzn-User
Listed since
2026-10-26 (in this ledger's registry)

Fully blocks

5.5%

360 sites; bounds 4.4% to 24.6%

Partly blocks

3.8%

252 sites

Name it explicitly

1.5%

101 sites; unreadable: 3,439

Over time

Share of panel sites blocking Amzn-User4 lines, 2016-09-05 to 2026-10-26; values between 2.39 and 5.49 %; latest 5.49 %.2.153.043.944.845.73Sep 2016Mar 2019Sep 2021Apr 2024Oct 2026blocks, reconstructed (Common Crawl): 2016-09-05 UTC: 3.14 %blocks, reconstructed (Common Crawl): 2017-09-25 UTC: 3.51 %blocks, reconstructed (Common Crawl): 2018-09-24 UTC: 3.61 %blocks, reconstructed (Common Crawl): 2019-09-23 UTC: 2.80 %blocks, reconstructed (Common Crawl): 2020-09-28 UTC: 2.52 %blocks, reconstructed (Common Crawl): 2021-09-27 UTC: 2.61 %blocks, reconstructed (Common Crawl): 2022-10-03 UTC: 2.55 %blocks, reconstructed (Common Crawl): 2024-09-16 UTC: 2.39 %blocks, reconstructed (Common Crawl): 2026-09-21 UTC: 3.23 %partly blocks, reconstructed (Common Crawl): 2016-09-05 UTC: 5.04 %partly blocks, reconstructed (Common Crawl): 2017-09-25 UTC: 4.91 %partly blocks, reconstructed (Common Crawl): 2018-09-24 UTC: 4.82 %partly blocks, reconstructed (Common Crawl): 2019-09-23 UTC: 4.76 %partly blocks, reconstructed (Common Crawl): 2020-09-28 UTC: 4.82 %partly blocks, reconstructed (Common Crawl): 2021-09-27 UTC: 4.98 %partly blocks, reconstructed (Common Crawl): 2022-10-03 UTC: 4.91 %partly blocks, reconstructed (Common Crawl): 2024-09-16 UTC: 5.10 %partly blocks, reconstructed (Common Crawl): 2026-09-21 UTC: 5.47 %blocks, daily observation: 2026-10-26 UTC: 5.49 %partly blocks, daily observation: 2026-10-26 UTC: 3.84 %

"Partly blocks" counts every robots.txt whose rules for Amzn-User disallow some paths, including generic rules for all crawlers (for example /search); it is not a measure of targeted AI policy. Shares are of the readable websites (W − U: 8,220 websites, 1,659 unreadable); the bounds assume none / all of the unreadable sites block. Solid: daily first-party observations (top 10k of the Tranco list W3ZV9, one fixed cohort). Dashed: reconstructed from Common Crawl (top 10k, sites readable in every crawl), a separate series.

Reconstructed values per crawl
CrawlDateBlocksSites read
CC-MAIN-2016-362016-09-053.1%3,216
CC-MAIN-2017-392017-09-253.5%3,216
CC-MAIN-2018-392018-09-243.6%3,216
CC-MAIN-2019-392019-09-232.8%3,216
CC-MAIN-2020-402020-09-282.5%3,216
CC-MAIN-2021-392021-09-272.6%3,216
CC-MAIN-2022-402022-10-032.5%3,216
CC-MAIN-2024-382024-09-162.4%3,216
CC-MAIN-2026-392026-09-213.2%3,216

Recent blockers

Sites that started fully blocking Amzn-User since 2026-07-28, highest-ranked first.

DateSiteWhat changed
ptt.ccnow blocks Amzn-User (was allow)
franceinfo.frnow blocks Amzn-User (was allow)
francetvinfo.frnow blocks Amzn-User (was allow)

Recent unblockers

DateSiteWhat changed
olhardigital.com.brnow partly blocks Amzn-User (was block)

Sites blocking Amzn-User now

facebook.com (*) · fbcdn.net (*) · instagram.com (*) · twitter.com (*) · googlevideo.com (*) · netflix.com (*) · x.com (*) · pinterest.com (*) · baidu.com (*) · reddit.com (*) · skybridge.click (*) · registrar-servers.com (*) · flickr.com (*) · cnn.com · meraki.com (*) · bbc.com · bbc.co.uk · t.co (*) · linktr.ee (*) · demdex.net (*) · weibo.com (*) · naver.com (*) · trustpilot.com (*) · netflix.net (*) · nflxvideo.net (*) · wsj.com (*) · cookiedatabase.org (*) · gcdn.co (*) · kwai.net (*) · edgecdn.ru (*) · sohu.com (*) · threads.com (*) · netcraze.io (*) · usatoday.com · sharethrough.com (*) · elpais.com · hstgr.net (*) · imgsmail.ru (*) · fb.com (*) · hihonorcloud.com (*) · pinimg.com (*) · cnet.com · quantserve.com (*) · creativecdn.com (*) · crwdcntrl.net (*) · vkontakte.ru (*) · disneyplus.com (*) · people.com · sentinelone.net (*) · adform.net (*) · academia.edu (*) · daum.net (*) · tiktokw.us (*) · xiaohongshu.com (*) · onet.pl · mailchi.mp (*) · btloader.com (*) · namecheaphosting.com (*) · jamfcloud.com (*) · healthline.com

(*) blocked through the * group, not by name. Full list in current.csv.

Cite this

InfraRabbit AI Crawl Ledger, "Share of top websites blocking Amzn-User", https://infrarabbit.com/crawlers/bot/Amzn-User, retrieved 2026-10-26. CC BY 4.0.