robots.txt & llms.txt across the Tranco top 1M
Data as of 2026-09-07 · robots.txt via Common Crawl CC-MAIN-2026-34 + our polite crawl · llms.txt via our polite crawl · Tranco list XN67N (2026-09-03T22:00:02.533886) · 1,000,000 panel domains 1,212,578 robots.txt fetches · 740,113 parsed · 56,498 llms.txt probes

Two public profiles · no score or winner

treccani.it and usw-tencentclb.cloud

treccani.it #16,923 usw-tencentclb.cloud #16,921

Measured takeaway

Botfy does not have comparable evidence for a strong policy takeaway; the available states are shown below.

Measured in Botfy's 2026-09-07 publication.

At a glance

A difference appears only when both sites have comparable evidence. Unavailable or unresolved observations remain incomplete.

Evidencetreccani.it usw-tencentclb.cloud
robots.txt Served and parsed Fetch failed: dns_error
Google crawl posture Open Blocked
Unnamed crawler fallback Partly Restricted they inherit the wildcard (*) group's rules Unavailable
Base /llms.txt Not probed Not probed

Treatment by purpose

Only resolved blocked, allowed, or mixed states count as a policy agreement or difference. Unnamed agents still inherit each site's wildcard rules.

Declared purposetreccani.it usw-tencentclb.cloud
Model training Mixed Observation unavailable
AI search Mixed Observation unavailable
Live assistant fetch Mixed Observation unavailable
Opt-out directives Mixed Observation unavailable
Ambiguous / undocumented Mixed Observation unavailable

Named agents

Measured differences appear first. “Not explicitly addressed” is not the same as allowed; the site's wildcard fallback governs that crawler.

Agenttreccani.it usw-tencentclb.cloud
GPTBot OpenAI Partly blocked Observation unavailable
ClaudeBot Anthropic Partly blocked Observation unavailable
CCBot Common Crawl Partly blocked Observation unavailable
Bytespider ByteDance Blocked Observation unavailable
Meta-ExternalAgent Meta Blocked Observation unavailable
FacebookBot Meta Partly blocked Observation unavailable
cohere-ai Cohere Blocked Observation unavailable
Diffbot Diffbot Blocked Observation unavailable
OAI-SearchBot OpenAI Partly blocked Observation unavailable
Claude-SearchBot Anthropic Partly blocked Observation unavailable
PerplexityBot Perplexity Partly blocked Observation unavailable
ChatGPT-User OpenAI Partly blocked Observation unavailable
9 additional tracked agents
Agenttreccani.it usw-tencentclb.cloud
Claude-User Partly blockedObservation unavailable
Claude-Web Partly blockedObservation unavailable
Perplexity-User Partly blockedObservation unavailable
Amazonbot BlockedObservation unavailable
Meta-ExternalFetcher Partly blockedObservation unavailable
MistralAI-User Partly blockedObservation unavailable
Google-Extended Partly blockedObservation unavailable
Applebot-Extended BlockedObservation unavailable
anthropic-ai Partly blockedObservation unavailable

How each site compares with its own rank peers

The sites may belong to different rank bands. Each percentage keeps its own population and denominator; Botfy does not subtract rates from unlike cohorts.

Traittreccani.it usw-tencentclb.cloud
Wildcard group Yes 92.1% Ranks 10,001–100,000 · n=54,147 Parsing unavailable 92.1% Ranks 10,001–100,000 · n=54,147
Effectively open file No 22.6% Ranks 10,001–100,000 · n=54,147 Parsing unavailable 22.6% Ranks 10,001–100,000 · n=54,147
Sitemap declared Yes 61.7% Ranks 10,001–100,000 · n=54,147 Parsing unavailable 61.7% Ranks 10,001–100,000 · n=54,147
robots.txt served Yes 59.7% Ranks 10,001–100,000 · n=91,507 Fetch failed: dns_error 59.7% Ranks 10,001–100,000 · n=91,507
robots.txt returned 404 No 7.9% Ranks 10,001–100,000 · n=91,507 Fetch failed: dns_error 7.9% Ranks 10,001–100,000 · n=91,507
Over the RFC parse limit No 0.2% Ranks 10,001–100,000 · n=54,147 Parsing unavailable 0.2% Ranks 10,001–100,000 · n=54,147
Blanket disallow No 4.0% Ranks 10,001–100,000 · n=54,147 Parsing unavailable 4.0% Ranks 10,001–100,000 · n=54,147
How this comparison is measured

Both sites use Botfy's latest published observations. A missing fetch, unresolved agent verdict, and measured absence are different states. Peer percentages use each site's exclusive Tranco rank band and print their own denominator. Populations, sources, and limits →

Keep comparing

Each suggestion replaces one side using an editorial collection or current rank proximity. Neither means the sites have similar policies.