Google-NotebookLM: share of top websites blocking it

On 27 October 2026, 5.2% of the readable top 10k websites fully blocked Google-NotebookLM in robots.txt (bounds 4.1% to 24.3% over all 8,219 websites, 1,657 of them unreadable); 3.9% blocked it partly and 1.4% named it.

Last verified 2026-10-28 03:59 UTC (daily run of 2026-10-27). Proof for that day.

Operator
Unclear at this time.
What it is
AI Assistants
Description
Google-NotebookLM is an AI-powered research and note-taking assistant that helps users synthesize information from uploaded sources like documents, transcripts, or web co… More info can be found at https://knownagents.com/agents/google-notebooklm
robots.txt token
User-agent: Google-NotebookLM
Listed since
2026-10-26 (in this ledger's registry)

Fully blocks

5.2%

340 sites; bounds 4.1% to 24.3%

Partly blocks

3.9%

256 sites

Name it explicitly

1.4%

90 sites; unreadable: 3,438

Over time

Share of panel sites blocking Google-NotebookLM4 lines, 2016-09-05 to 2026-10-27; values between 2.58 and 5.18 %; latest 5.18 %.2.373.133.884.635.39Sep 2016Mar 2019Oct 2021Apr 2024Oct 2026blocks, reconstructed (Common Crawl): 2016-09-05 UTC: 3.79 %blocks, reconstructed (Common Crawl): 2016-10-03 UTC: 2.58 %blocks, reconstructed (Common Crawl): 2017-01-23 UTC: 3.96 %blocks, reconstructed (Common Crawl): 2017-04-24 UTC: 3.19 %blocks, reconstructed (Common Crawl): 2017-07-24 UTC: 4.13 %blocks, reconstructed (Common Crawl): 2017-09-25 UTC: 3.66 %blocks, reconstructed (Common Crawl): 2017-10-23 UTC: 3.32 %blocks, reconstructed (Common Crawl): 2018-01-29 UTC: 3.32 %blocks, reconstructed (Common Crawl): 2018-09-24 UTC: 3.97 %blocks, reconstructed (Common Crawl): 2019-09-23 UTC: 2.82 %blocks, reconstructed (Common Crawl): 2020-09-28 UTC: 2.68 %blocks, reconstructed (Common Crawl): 2021-09-27 UTC: 2.91 %blocks, reconstructed (Common Crawl): 2022-10-03 UTC: 2.64 %blocks, reconstructed (Common Crawl): 2023-10-02 UTC: 3.00 %blocks, reconstructed (Common Crawl): 2024-09-16 UTC: 2.85 %blocks, reconstructed (Common Crawl): 2025-09-15 UTC: 3.11 %blocks, reconstructed (Common Crawl): 2026-09-21 UTC: 3.66 %partly blocks, reconstructed (Common Crawl): 2016-09-05 UTC: 4.78 %partly blocks, reconstructed (Common Crawl): 2016-10-03 UTC: 4.97 %partly blocks, reconstructed (Common Crawl): 2017-01-23 UTC: 4.78 %partly blocks, reconstructed (Common Crawl): 2017-04-24 UTC: 4.83 %partly blocks, reconstructed (Common Crawl): 2017-07-24 UTC: 4.67 %partly blocks, reconstructed (Common Crawl): 2017-09-25 UTC: 4.63 %partly blocks, reconstructed (Common Crawl): 2017-10-23 UTC: 4.60 %partly blocks, reconstructed (Common Crawl): 2018-01-29 UTC: 4.72 %partly blocks, reconstructed (Common Crawl): 2018-09-24 UTC: 4.30 %partly blocks, reconstructed (Common Crawl): 2019-09-23 UTC: 4.38 %partly blocks, reconstructed (Common Crawl): 2020-09-28 UTC: 4.28 %partly blocks, reconstructed (Common Crawl): 2021-09-27 UTC: 4.24 %partly blocks, reconstructed (Common Crawl): 2022-10-03 UTC: 4.32 %partly blocks, reconstructed (Common Crawl): 2023-10-02 UTC: 4.42 %partly blocks, reconstructed (Common Crawl): 2024-09-16 UTC: 4.42 %partly blocks, reconstructed (Common Crawl): 2025-09-15 UTC: 4.58 %partly blocks, reconstructed (Common Crawl): 2026-09-21 UTC: 4.45 %blocks, daily observation: 2026-10-26 UTC: 5.17 %blocks, daily observation: 2026-10-27 UTC: 5.18 %partly blocks, daily observation: 2026-10-26 UTC: 3.92 %partly blocks, daily observation: 2026-10-27 UTC: 3.90 %

"Partly blocks" counts every robots.txt whose rules for Google-NotebookLM 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: 8,219 websites, 1,657 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), a separate series.

Reconstructed values per crawl
CrawlDateBlocksSites read
CC-MAIN-2016-362016-09-053.8%5,355
CC-MAIN-2016-402016-10-032.6%5,235
CC-MAIN-2017-042017-01-234.0%5,458
CC-MAIN-2017-172017-04-243.2%5,449
CC-MAIN-2017-302017-07-244.1%5,397
CC-MAIN-2017-392017-09-253.7%5,355
CC-MAIN-2017-432017-10-233.3%5,329
CC-MAIN-2018-052018-01-293.3%5,300
CC-MAIN-2018-392018-09-244.0%5,768
CC-MAIN-2019-392019-09-232.8%5,773
CC-MAIN-2020-402020-09-282.7%5,860
CC-MAIN-2021-392021-09-272.9%5,914
CC-MAIN-2022-402022-10-032.6%5,692
CC-MAIN-2023-402023-10-023.0%5,930
CC-MAIN-2024-382024-09-162.9%6,065
CC-MAIN-2025-382025-09-153.1%6,045
CC-MAIN-2026-392026-09-213.7%5,868

Recent blockers

Sites that started fully blocking Google-NotebookLM since 2026-07-29, highest-ranked first.

DateSiteWhat changed
ptt.ccnow blocks Google-NotebookLM (was allow)

Recent unblockers

DateSiteWhat changed
No changes recorded yet. The first daily run is the baseline; changes appear from the second day on.

Sites blocking Google-NotebookLM now

facebook.com (*) · fbcdn.net (*) · instagram.com (*) · twitter.com (*) · googlevideo.com (*) · amazon.com · netflix.com (*) · x.com (*) · tiktok.com · baidu.com (*) · amazonvideo.com · reddit.com (*) · skybridge.click (*) · registrar-servers.com (*) · flickr.com (*) · t.co (*) · imdb.com (*) · reuters.com (*) · demdex.net (*) · weibo.com (*) · amazon.co.uk · naver.com (*) · trustpilot.com (*) · netflix.net (*) · nflxvideo.net (*) · wsj.com (*) · amazon.de · cookiedatabase.org (*) · gcdn.co (*) · kwai.net (*) · amazon.co.jp · edgecdn.ru (*) · sohu.com (*) · threads.com (*) · netcraze.io (*) · usatoday.com · amazon.fr · amazon.ca · sharethrough.com (*) · primevideo.com · amazon.in · hstgr.net (*) · lemonde.fr · imgsmail.ru (*) · fb.com (*) · hihonorcloud.com (*) · amazon.es · amazon.it · quantserve.com (*) · creativecdn.com (*) · crwdcntrl.net (*) · amazon.co.za · vkontakte.ru (*) · disneyplus.com (*) · sentinelone.net (*) · adform.net (*) · academia.edu (*) · amazon.com.br · daum.net (*) · tiktokw.us (*)

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

Cite this

InfraRabbit AI Crawl Ledger, "Share of top websites blocking Google-NotebookLM", https://infrarabbit.com/crawlers/bot/Google-NotebookLM, retrieved 2026-10-27. CC BY 4.0.