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.

Segment: Rank tier Rank decile TLD Overall
Weighting: Raw Rank-weighted
robots.txt returns 200
data table
top_1k67.1%
top_10k72.0%
top_100k69.4%
top_1m67.7%
absent (404)
data table
top_1k20.2%
top_10k10.9%
top_100k12.5%
top_1m12.4%
disallow-all
data table
top_1k25.3%
top_10k8.9%
top_100k6.4%
top_1m4.5%
allow-all
data table
top_1k19.2%
top_10k15.9%
top_100k20.8%
top_1m25.1%
wildcard * UA
data table
top_1k97.1%
top_10k95.3%
top_100k94.7%
top_1m93.9%
declares a sitemap
data table
top_1k61.4%
top_10k57.2%
top_100k58.7%
top_1m58.9%
llms.txt adoption
data table
top_1k16.1%
top_10k11.8%
top_100k11.3%
top_1m11.5%

Full data table

Rank tier sample status 200status 404disallow allallow allwildcard uasitemapllms adoption
top_1k 839 67.1% 20.2% 25.3% 19.2% 97.1% 61.4% 16.1%
top_10k 7,252 72.0% 10.9% 8.9% 15.9% 95.3% 57.2% 11.8%
top_100k 63,980 69.4% 12.5% 6.4% 20.8% 94.7% 58.7% 11.3%
top_1m 502,593 67.7% 12.4% 4.5% 25.1% 93.9% 58.9% 11.5%

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