unverifiable
The third outcome, and the one most tools omit.
What unverifiable does not show
A profile behind a login wall, a 429, or a shell page under 512 bytes can be neither confirmed nor accused, and folding it into either bucket produces a number that overstates or understates by construction.
Where unverifiable comes up on this site
- The sameAs profile we called dead: a crawler that cannot fetch its own hostUnverifiable is a fact about us.
- The AI crawler and agent list: what each one is for, and which can be verifiedUnverifiable is not forgery.
- How to measure AI and agent visibility without trusting a vendor's scoreOperators with no published feed — Meta-ExternalAgent, Amazonbot, AhrefsBot, SemrushBot, DataForSeoBot — are unverifiable rather than fake, and should be reported as a separate bucket instead of folded into either.
- How to check whether a GPTBot or ClaudeBot request in your logs is realUnverifiable : the operator publishes no feed, so the claim cannot be settled either way.
- How to verify Googlebot, Bingbot and AI crawlers by IPTwo ways to verify a crawler request, and what each needs from the operator .t{font:600 13px system-ui,sans-serif;fill:var(--ink)}.s{font:12px…
Definitions that name unverifiable
own-host loop · forged crawler identity · denominator note · rate limiting · visitor resolve · agent traffic index
Related terms in Crawlers and access
Who is fetching, whether they are who they claim, and what your rules actually permit.
visitor resolve · published crawler ranges · operator origin · signed agent · agent arrival · agent conduct record · agent traffic index · user-triggered fetch exemption · retrieval crawler · user-triggered fetch · verified crawler · forged crawler identity · robots.txt · user-agent group · AI opt-out · Content-Signal · crawl budget · cloaking · challenge page at 200 · uniform refusal · nonexistent-path control · blocked render resource · off-host redirect · homepage refused · FCrDNS · Crawler trap · Conditional request · ASN blocking · operator feed · residential proxy · Google-Extended · Google-Agent · GPTBot vs OAI-SearchBot · ClaudeBot vs Claude-User · PerplexityBot vs Perplexity-User · CCBot · Bytespider · agentic traffic · crawler classification · user agent · datacenter IP · vantage point · rate limit · delivery comparison · honeypot
Questions about unverifiable
What is unverifiable?
The third outcome, and the one most tools omit.
What does unverifiable not show or guarantee?
A profile behind a login wall, a 429, or a shell page under 512 bytes can be neither confirmed nor accused, and folding it into either bucket produces a number that overstates or understates by construction.
Which area of the glossary does unverifiable belong to?
Crawlers and access: Who is fetching, whether they are who they claim, and what your rules actually permit.
← forged crawler identity · robots.txt →
See it in the full glossary · 731 terms across 19 areas.