robots.txt & llms.txt across the Tranco top 1M
Data as of 2026-07-17 · robots.txt via Common Crawl CC-MAIN-2026-25 + our polite crawl · llms.txt via our polite crawl · Tranco top-1,000,000 · crawls: 2026-07-25 · 2026-07-17 746,000 robots.txt fetches · 574,664 parsed · 54,000 llms.txt probes

Segments

Headline metrics broken down by segment. Toggle the segmentation axis and the weighting. Rank-weighting (FR-23b) weights each domain by 1/Tranco-rank, so a restriction on a top site counts far more than one deep in the tail.

One crawl ingested (2026-07-17). Cross-crawl trend lines appear automatically when the next monthly crawl lands.

Weighting: Raw Rank-weighted
robots.txt returns 200
data table
168.4%
267.1%
366.6%
468.7%
568.9%
668.6%
768.8%
869.2%
968.5%
1066.9%
absent (404)
data table
117.2%
213.4%
313.3%
411.6%
511.2%
610.9%
710.7%
812.4%
912.8%
1010.8%
disallow-all
data table
119.4%
25.1%
34.4%
44.0%
53.7%
64.5%
75.6%
83.6%
93.1%
104.3%
allow-all
data table
118.9%
223.3%
325.6%
424.5%
525.0%
625.8%
726.2%
828.0%
930.3%
1027.9%
wildcard * UA
data table
196.4%
294.0%
393.8%
494.2%
594.4%
694.1%
793.9%
892.7%
993.0%
1094.1%
declares a sitemap
data table
160.3%
257.7%
357.6%
459.7%
560.0%
660.7%
761.4%
859.7%
960.5%
1059.9%
llms.txt adoption
data table
114.6%
212.8%
311.6%
49.9%
510.0%

Full data table

Rank decile sample status 200status 404disallow allallow allwildcard uasitemapllms adoption
1 72,071 68.4% 17.2% 19.4% 18.9% 96.4% 60.3% 14.6%
2 67,661 67.1% 13.4% 5.1% 23.3% 94.0% 57.7% 12.8%
3 60,090 66.6% 13.3% 4.4% 25.6% 93.8% 57.6% 11.6%
4 59,091 68.7% 11.6% 4.0% 24.5% 94.2% 59.7% 9.9%
5 60,083 68.9% 11.2% 3.7% 25.0% 94.4% 60.0% 10.0%
6 58,851 68.6% 10.9% 4.5% 25.8% 94.1% 60.7% not probed
7 57,950 68.8% 10.7% 5.6% 26.2% 93.9% 61.4% not probed
8 49,784 69.2% 12.4% 3.6% 28.0% 92.7% 59.7% not probed
9 40,093 68.5% 12.8% 3.1% 30.3% 93.0% 60.5% not probed
10 48,990 66.9% 10.8% 4.3% 27.9% 94.1% 59.9% not probed

llms.txt not probed cells: this crawl's cohort covers the top 500k (rank deciles 1–5); the rest join in a later crawl.