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
all68.3%
absent (404)
data table
all16.6%
disallow-all
data table
all17.7%
allow-all
data table
all19.6%
wildcard * UA
data table
all96.1%
declares a sitemap
data table
all60.1%
llms.txt adoption
data table
all14.6%

Full data table

Segment sample status 200status 404disallow allallow allwildcard uasitemapllms adoption
all 574,664 68.3% 16.6% 17.7% 19.6% 96.1% 60.1% 14.6%

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