Twitterbot

Listed only

X (formerly Twitter)'s crawler that fetches shared links to render Card previews. X's own developer docs give no IP ranges, ASN, or reverse-DNS verification method; the commonly cited "*.twttr.com" rDNS check and aggregate IP ranges trace only to community write-ups, not official docs.

Operated by X · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexTwitterbot/\d
observedTwitterbot/1.0
observedTwitterbot/0.1

How to verify

No verification recipe published by the operator.

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Operator publishes no verification path
Respects robots.txt
Honors robots.txt (token: Twitterbot)
Behaves
Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset
Reachable operator
Operator and documentation published

Measured against the Good Bot Practices.